/* ================================================================
   MATH PATH LEARNING — styles.css
   Premium, Apple-clean education landing page

   TABLE OF CONTENTS:
   1.  CSS Custom Properties (variables)
   2.  CSS Reset & Base
   3.  Typography
   4.  Utility Classes
   5.  Buttons
   6.  Header & Navigation
   7.  Mobile Menu
   8.  Hero Section
   9.  Explainer Video
   10. Section Shared Styles
   11. How It Works
   12. Why Parents Love It
   13. Built for Every Child
   14. Photo Section
   15. Pricing
   16. FAQ
   17. Footer
   18. Floating Button
   19. Modal & Contact Form
   20. Animations & Transitions
   21. Responsive — Tablet (max 1024px)
   22. Responsive — Mobile (max 768px)
   23. Responsive — Small Mobile (max 480px)
================================================================ */


/* ================================================================
   1. CSS CUSTOM PROPERTIES
================================================================ */
:root {
  /* Brand Colors */
  --color-navy:       #0f1c2e;   /* Primary text / dark navy */
  --color-ink:        #1a2e45;   /* Section backgrounds */
  --color-teal:       #0e9688;   /* Primary accent */
  --color-teal-light: #14b8a6;   /* Hover / lighter teal */
  --color-teal-pale:  #e6f7f5;   /* Soft teal background tint */
  --color-amber:      #f59e0b;   /* Warm yellow highlight */
  --color-amber-pale: #fef3c7;   /* Soft amber background */
  --color-white:      #ffffff;
  --color-off-white:  #f8fafc;
  --color-gray-50:    #f1f5f9;
  --color-gray-100:   #e2e8f0;
  --color-gray-200:   #cbd5e1;
  --color-gray-400:   #94a3b8;
  --color-gray-600:   #475569;
  --color-gray-700:   #334155;
  --color-error:      #ef4444;
  --color-success:    #10b981;

  /* Typography */
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs:   0.75rem;   /*  12px */
  --font-size-sm:   0.875rem;  /*  14px */
  --font-size-base: 1rem;      /*  16px */
  --font-size-md:   1.125rem;  /*  18px */
  --font-size-lg:   1.25rem;   /*  20px */
  --font-size-xl:   1.5rem;    /*  24px */
  --font-size-2xl:  1.875rem;  /*  30px */
  --font-size-3xl:  2.25rem;   /*  36px */
  --font-size-4xl:  3rem;      /*  48px */
  --font-size-5xl:  3.75rem;   /*  60px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-6);

  /* Borders */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   18px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.09), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-xl:  0 24px 60px rgba(0,0,0,0.16);
  --shadow-teal: 0 8px 30px rgba(14,150,136,0.25);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Header height */
  --header-height: 72px;
}


/* ================================================================
   2. CSS RESET & BASE
================================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  color: var(--color-navy);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: var(--font-base);
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

input, select, textarea {
  font-family: var(--font-base);
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}


/* ================================================================
   3. TYPOGRAPHY
================================================================ */
h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-navy);
}

p {
  color: var(--color-gray-600);
  line-height: 1.7;
}

strong {
  color: var(--color-navy);
  font-weight: 600;
}


/* ================================================================
   4. UTILITY CLASSES
================================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.full-width {
  width: 100%;
}

/* Section shared header */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-eyebrow {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--font-size-3xl);
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray-600);
  max-width: 560px;
  margin: 0 auto;
}

/* Hidden honeypot field */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  visibility: hidden;
  opacity: 0;
  height: 0;
  overflow: hidden;
}


/* ================================================================
   5. BUTTONS
================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1;
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-bounce),
    color var(--transition-base),
    border-color var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:active {
  transform: scale(0.97);
}

/* Primary — teal fill */
.btn-primary {
  background-color: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
  box-shadow: var(--shadow-teal);
}

.btn-primary:hover {
  background-color: var(--color-teal-light);
  border-color: var(--color-teal-light);
  box-shadow: 0 10px 35px rgba(14,150,136,0.35);
  transform: translateY(-1px);
}

/* Outline — bordered teal */
.btn-outline {
  background-color: transparent;
  color: var(--color-teal);
  border-color: var(--color-teal);
}

.btn-outline:hover {
  background-color: var(--color-teal-pale);
  transform: translateY(-1px);
}

/* Ghost — transparent */
.btn-ghost {
  background-color: transparent;
  color: var(--color-navy);
  border-color: var(--color-gray-200);
}

.btn-ghost:hover {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

/* Nav button (smaller) */
.btn-nav {
  padding: 0.55rem 1.25rem;
  font-size: var(--font-size-sm);
  background-color: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
  border-radius: var(--radius-full);
}

.btn-nav:hover {
  background-color: var(--color-teal-light);
  transform: translateY(-1px);
}

/* Large variant */
.btn-large {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-md);
}

.btn-arrow {
  transition: transform var(--transition-base);
  display: inline-block;
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}


/* ================================================================
   6. HEADER & NAVIGATION
================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-gray-100);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.logo-text {
  display: inline-flex;
  align-items: baseline;
  font-size: var(--font-size-lg);
  font-weight: 900;
  color: var(--color-navy);
  letter-spacing: 0;
}

.logo-accent {
  font-weight: 900;
  color: var(--color-teal) !important;
}

.logo-dark {
  margin-left: 0.24em;
  font-weight: 900;
  color: var(--color-navy) !important;
}

/* Nav links (desktop) */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link-button {
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  font-family: var(--font-base);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: inherit;
  color: var(--color-gray-700);
  text-align: inherit;
  text-decoration: none;
  cursor: pointer;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-teal);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-teal);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-hub-link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 var(--space-4);
  border: 1px solid rgba(20, 184, 166, 0.24);
  border-radius: var(--radius-full);
  color: var(--color-teal);
  background-color: rgba(240, 253, 250, 0.9);
  font-weight: 700;
}

.nav-hub-link::after {
  display: none;
}

.nav-hub-link:hover {
  border-color: rgba(20, 184, 166, 0.42);
  background-color: rgba(224, 252, 247, 0.98);
  color: var(--color-teal-dark);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.hamburger:hover {
  background-color: var(--color-gray-50);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-navy);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* Hamburger open state */
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ================================================================
   7. MOBILE MENU
================================================================ */
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.mobile-menu.open {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  font-size: var(--font-size-md);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-100);
  display: block;
}

.mobile-nav-link.nav-link-button {
  width: 100%;
  font-size: var(--font-size-md);
  text-align: left;
}

.mobile-nav-link.nav-hub-link {
  justify-content: center;
  min-height: 46px;
  margin: var(--space-1) 0;
  padding: 0 var(--space-4);
  border: 1px solid rgba(20, 184, 166, 0.26);
  border-radius: var(--radius-full);
  text-align: center;
}


/* ================================================================
   8. HERO SECTION
================================================================ */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    160deg,
    var(--color-off-white) 0%,
    var(--color-teal-pale) 50%,
    #e0f2fe 100%
  );
  padding: calc(var(--space-24) + var(--header-height) * 0.3) 0 var(--space-24);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

/* Background decorative shapes */
.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.06;
}

.shape-1 {
  width: 600px;
  height: 600px;
  background: var(--color-teal);
  top: -200px;
  right: -150px;
  animation: float 8s ease-in-out infinite;
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: var(--color-amber);
  bottom: -100px;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
  width: 250px;
  height: 250px;
  background: var(--color-teal-light);
  top: 40%;
  left: 60%;
  animation: float 6s ease-in-out infinite 1s;
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

/* Beta badge */
.badge-beta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background-color: var(--color-amber-pale);
  color: #92400e;
  border: 1px solid #fcd34d;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-8);
  animation: fadeInDown 0.6s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-amber);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

/* Hero headline */
.hero-headline {
  font-size: clamp(2.25rem, 5vw, var(--font-size-5xl));
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-navy);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.7s ease 0.1s both;
}

.headline-accent {
  color: var(--color-teal);
  position: relative;
}

/* Hero subtext */
.hero-subtext {
  font-size: var(--font-size-md);
  color: var(--color-gray-600);
  max-width: 640px;
  margin: 0 auto var(--space-10);
  line-height: 1.8;
  animation: fadeInUp 0.7s ease 0.2s both;
}

/* CTA group */
.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
  animation: fadeInUp 0.7s ease 0.3s both;
}

/* Trust pills */
.hero-trust {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  animation: fadeInUp 0.7s ease 0.4s both;
}

.trust-pill {
  background-color: rgba(255,255,255,0.85);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  box-shadow: var(--shadow-sm);
}


/* ================================================================
   9. PERSONALIZED LEARNING PREVIEW
================================================================ */
.explanation-b {
  min-height: clamp(620px, 58vw, 820px);
  padding: clamp(var(--space-14), 7vw, var(--space-20)) 0 var(--space-20);
  background-color: var(--color-off-white);
  background-image: url("assets/images/explanationb.png");
  background-position: 72% center;
  background-repeat: no-repeat;
  background-size: cover;
}

.explanation-b-inner {
  display: flex;
  align-items: flex-start;
  min-height: inherit;
}

.explanation-b-copy {
  position: relative;
  z-index: 1;
  max-width: 440px;
  padding-top: clamp(var(--space-4), 2.5vw, var(--space-8));
}

.explanation-b-copy::before {
  content: "";
  position: absolute;
  inset: -34px -44px -36px -38px;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  border-radius: 38px;
  background:
    radial-gradient(circle at 18% 16%, rgba(255,255,255,0.99), rgba(255,255,255,0.86) 46%, rgba(255,255,255,0.56) 64%, rgba(255,255,255,0) 86%),
    linear-gradient(90deg, rgba(255,255,255,0.82), rgba(255,255,255,0.36) 58%, rgba(255,255,255,0) 100%);
  filter: blur(3px);
  transition: opacity 0.25s ease;
}

.explanation-b-copy .section-title {
  font-size: clamp(2rem, 4vw, var(--font-size-4xl));
  margin-bottom: var(--space-5);
}

.explanation-b-mobile-image {
  display: none;
}

@media (max-width: 1180px) {
  .explanation-b {
    background-position: 80% center;
  }

  .explanation-b-copy::before {
    opacity: 0.86;
  }
}

.learning-preview {
  position: relative;
  overflow: hidden;
  padding: var(--space-20) 0;
  background:
    linear-gradient(160deg, rgba(230,247,245,0.96) 0%, rgba(248,250,252,0.98) 48%, rgba(224,242,254,0.9) 100%);
}

.learning-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 18%, rgba(14,150,136,0.08), transparent 26%),
    radial-gradient(circle at 82% 72%, rgba(245,158,11,0.08), transparent 30%);
  pointer-events: none;
}

.learning-preview-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.25fr);
  gap: clamp(var(--space-10), 5vw, var(--space-20));
  align-items: center;
}

.learning-preview-copy {
  max-width: 500px;
}

.learning-preview-copy .section-title {
  font-size: clamp(2rem, 4vw, var(--font-size-4xl));
  margin-bottom: var(--space-5);
}

.learning-preview-text {
  font-size: var(--font-size-md);
  line-height: 1.8;
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
}

.learning-preview-actions {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.learning-preview-note {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-600);
}

.learning-preview-visual {
  position: relative;
  min-height: clamp(720px, 62vw, 820px);
  border-radius: var(--radius-xl);
  isolation: isolate;
}

.learning-preview-image {
  position: absolute;
  inset: -1% -4% -1% 8%;
  background:
    linear-gradient(90deg, rgba(248,250,252,0.96) 0%, rgba(248,250,252,0.42) 32%, rgba(248,250,252,0.08) 72%),
    url("assets/images/explanation.png") right center / cover no-repeat;
  border: 0;
  box-shadow: none;
  opacity: 0.74;
  filter: saturate(0.92) contrast(0.98);
  -webkit-mask-image:
    linear-gradient(90deg, transparent 0%, #000 18%, #000 78%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 12%, #000 84%, transparent 100%);
  mask-image:
    linear-gradient(90deg, transparent 0%, #000 18%, #000 78%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 12%, #000 84%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
}

.learning-preview-image::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(248,250,252,0.78) 0%, rgba(248,250,252,0.12) 54%, rgba(248,250,252,0.46) 100%),
    linear-gradient(180deg, rgba(248,250,252,0.5) 0%, transparent 32%, rgba(248,250,252,0.58) 100%);
}

.preview-card {
  position: absolute;
  z-index: 2;
  width: clamp(215px, 19vw, 285px);
  min-height: 76px;
  padding: var(--space-5) var(--space-5) var(--space-4);
  border-radius: 22px;
  background: linear-gradient(160deg, rgba(255,255,255,0.98), rgba(248,250,252,0.95));
  border: 1px solid rgba(203,213,225,0.78);
  box-shadow: 0 12px 30px rgba(15,28,46,0.09), 0 4px 12px rgba(14,150,136,0.06);
  cursor: default;
  transform: translate3d(0, 0, 0);
  transition:
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 300ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 300ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.preview-card:hover,
.preview-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(14,150,136,0.34);
  box-shadow: 0 24px 58px rgba(15,28,46,0.16), 0 8px 28px rgba(14,150,136,0.14);
}

.preview-card:focus-visible {
  outline: 3px solid rgba(14,150,136,0.22);
  outline-offset: 5px;
}

.preview-card-badge {
  position: absolute;
  top: -18px;
  left: 20px;
  display: grid;
  place-items: center;
  width: 40px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(37,99,235,0.24), 0 0 0 5px rgba(255,255,255,0.9);
  z-index: 3;
}

.preview-card-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(58px, 6vw, 88px);
  gap: var(--space-3);
  align-items: center;
  min-height: 94px;
}

.preview-card-details {
  display: block;
  max-height: none;
  margin-top: var(--space-3);
  opacity: 1;
  overflow: visible;
  transform: translateY(0);
}

.preview-card-title {
  margin: 0;
  font-size: clamp(0.88rem, 1vw, var(--font-size-base));
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.25;
}

.preview-card-body {
  font-size: var(--font-size-xs);
  line-height: 1.5;
  color: var(--color-gray-600);
}

.card-emphasis {
  color: #1683f2;
  font-weight: 800;
}

.preview-card-art {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  background: var(--preview-art) center / contain no-repeat;
}

.preview-card-art--1 {
  --preview-art: url("assets/images/explanation1.png");
}

.preview-card-art--2 {
  --preview-art: url("assets/images/explanation2.png");
}

.preview-card-art--3 {
  --preview-art: url("assets/images/explanation3.png");
}

.preview-card-art--4 {
  --preview-art: url("assets/images/explanation4.png");
}

.preview-card-art--5 {
  --preview-art: url("assets/images/explanation5.png");
}

.preview-card-footer {
  display: block;
  margin: var(--space-3) calc(var(--space-5) * -1) calc(var(--space-4) * -1);
  padding: var(--space-3) var(--space-5);
  border-radius: 0 0 21px 21px;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.45;
  color: rgba(15,28,46,0.78);
  border-top: 1px solid rgba(255,255,255,0.55);
}

.preview-card-footer--blue {
  background: rgba(224,242,254,0.72);
}

.preview-card-footer--green {
  background: rgba(220,252,231,0.66);
}

.preview-card-footer--yellow {
  background: rgba(254,243,199,0.66);
}

.preview-card-footer--purple {
  background: rgba(237,233,254,0.68);
}

.preview-card-footer--teal {
  background: rgba(204,251,241,0.62);
}

.preview-card--learning {
  left: -4%;
  top: 1%;
  width: clamp(250px, 24vw, 340px);
  border-color: rgba(14,150,136,0.22);
  box-shadow: 0 26px 66px rgba(15,28,46,0.14), 0 10px 30px rgba(14,150,136,0.12);
}

.preview-card--interests {
  right: 0;
  top: 14%;
}

.preview-card--practice {
  left: -8%;
  bottom: 16%;
}

.preview-card--help {
  right: -1%;
  top: 50%;
}

.preview-card--confidence {
  left: 21%;
  bottom: 0;
}


/* ================================================================
   10. EXPLAINER VIDEO
================================================================ */
.explainer-section {
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-teal-pale) 100%);
}

.explainer-video-card {
  max-width: 920px;
  margin: 0 auto;
  padding: var(--space-3);
  background:
    radial-gradient(circle at top left, rgba(20,184,166,0.18), transparent 34%),
    linear-gradient(145deg, var(--color-white), var(--color-off-white));
  border: 1px solid rgba(14,150,136,0.18);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.explainer-video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-off-white);
  border-radius: calc(var(--radius-xl) - 6px);
}

.explainer-video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--color-off-white);
  border-radius: inherit;
  object-fit: contain;
}

.explainer-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(180deg, rgba(15,28,46,0.12), rgba(15,28,46,0.32)),
    radial-gradient(circle at center, rgba(255,255,255,0.18), transparent 36%);
  cursor: pointer;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.explainer-video-card.is-playing .explainer-play-overlay,
.explainer-video-card.is-unavailable .explainer-play-overlay {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.explainer-play-icon {
  width: 78px;
  height: 78px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-left: 5px;
  border-radius: 50%;
  background: var(--color-teal);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  box-shadow: var(--shadow-teal);
  transition: transform var(--transition-bounce), background-color var(--transition-base);
}

.explainer-play-overlay:hover .explainer-play-icon {
  background: var(--color-teal-light);
  transform: scale(1.05);
}

.explainer-video-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  background: var(--color-off-white);
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
  font-weight: 800;
  text-align: center;
}

.explainer-cta-group {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}


/* ================================================================
   10. SECTION SHARED STYLES
================================================================ */
.section {
  padding: var(--space-24) 0;
}

.section:nth-child(even) {
  background-color: var(--color-off-white);
}


/* ================================================================
   11. HOW IT WORKS
================================================================ */
.how-it-works {
  background-color: var(--color-white);
  position: relative;
}

/* ── main.png visual overview ─────────────────────────────── */
.hiw-visual {
  margin: 0 auto var(--space-16);
  /* Constrain so it never feels wall-to-wall on large screens */
  max-width: 960px;
  /* Outer card treatment */
  background-color: var(--color-off-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: box-shadow var(--transition-base), transform var(--transition-bounce);
}

.hiw-visual:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.hiw-visual-img {
  display: block;
  width: 100%;
  height: auto;
  /* The image has its own light background — no extra padding needed */
}

.hiw-visual-caption {
  padding: var(--space-4) var(--space-6) var(--space-5);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  border-top: 1px solid var(--color-gray-100);
  background-color: var(--color-white);
  line-height: 1.6;
}

.hiw-visual-caption em {
  font-style: normal;
  color: var(--color-teal);
  font-weight: 600;
}

/* "The full detail" divider label above step cards */
.hiw-detail-label {
  text-align: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.hiw-detail-label::before,
.hiw-detail-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-gray-100);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  list-style: none;
  position: relative;
}

/* Connector line between steps */
.steps-grid::before {
  content: '';
  position: absolute;
  top: 60px;
  left: calc(12.5% + 24px);
  right: calc(12.5% + 24px);
  height: 2px;
  background: linear-gradient(to right, var(--color-teal), var(--color-teal-light));
  z-index: 0;
  opacity: 0.3;
}

.step-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-bounce),
    border-color var(--transition-base);
}

.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--color-teal-pale);
}

.step-number {
  font-size: var(--font-size-xs);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-teal);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  background-color: var(--color-teal-pale);
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.step-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
  display: block;
  transition: transform var(--transition-bounce);
}

.step-card:hover .step-icon {
  transform: scale(1.15);
}

.step-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.step-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* Decorative pathway dots */
.pathway-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.pathway-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-teal);
  opacity: 0.3;
  animation: pathPulse 2s ease-in-out infinite;
}

.pathway-dots span:nth-child(2) { animation-delay: 0.3s; }
.pathway-dots span:nth-child(3) { animation-delay: 0.6s; }
.pathway-dots span:nth-child(4) { animation-delay: 0.9s; }
.pathway-dots span:nth-child(5) { animation-delay: 1.2s; }


/* ================================================================
   11. WHY PARENTS LOVE IT
================================================================ */
.why-parents {
  background: linear-gradient(170deg, var(--color-off-white) 0%, var(--color-teal-pale) 100%);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  list-style: none;
}

.benefit-card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-bounce);
}

.benefit-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.benefit-icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  display: block;
}

.benefit-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.benefit-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.7;
}


/* ================================================================
   12. BUILT FOR EVERY CHILD
================================================================ */
.built-for-every {
  background: linear-gradient(170deg, var(--color-white) 0%, var(--color-teal-pale) 100%);
  color: var(--color-navy);
}

.built-for-every .section-eyebrow {
  color: var(--color-teal);
}

.built-for-every .section-title,
.built-for-every h2 {
  color: var(--color-navy);
}

.bfe-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.bfe-intro {
  font-size: var(--font-size-md);
  color: var(--color-gray-700);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.bfe-intro strong {
  color: var(--color-amber);
}

.bfe-body {
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.bfe-text .section-eyebrow {
  display: block;
  margin-bottom: var(--space-3);
}

.bfe-text .section-title {
  margin-bottom: var(--space-5);
}

/* Adjustment grid */
.bfe-adjustments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.adjust-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-bounce);
}

.adjust-card:hover {
  border-color: rgba(14,150,136,0.24);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.adjust-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.adjust-card strong {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.adjust-card p {
  font-size: var(--font-size-xs);
  color: var(--color-gray-600);
  line-height: 1.5;
}


/* ================================================================
   13. PHOTO SECTION
================================================================ */
.photo-section {
  background-color: var(--color-off-white);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.photo-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-white);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-bounce);
}

.photo-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

/* Middle card is slightly taller (featured) */
.photo-card--featured {
  transform: translateY(-12px);
}

.photo-card--featured:hover {
  transform: translateY(-18px);
}

.photo-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.photo-card:hover .photo-img {
  transform: scale(1.03);
}

.photo-caption {
  padding: var(--space-4) var(--space-5) var(--space-5);
  background-color: var(--color-white);
}

.caption-tag {
  display: inline-block;
  background-color: var(--color-teal-pale);
  color: var(--color-teal);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-2);
}

.photo-caption p,
.photo-caption {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
}


/* ================================================================
   14. PRICING
================================================================ */
.pricing {
  background: linear-gradient(170deg, var(--color-white) 0%, var(--color-teal-pale) 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  max-width: 1040px;
  margin: 0 auto var(--space-8);
  align-items: start;
}

/* Base pricing card */
.pricing-card {
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-bounce);
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
}

/* Elite card highlight */
.pricing-card--elite {
  background: linear-gradient(145deg, #0f1c2e 0%, #1a3050 100%);
  border-color: var(--color-teal);
  transform: scale(1.03);
  box-shadow: var(--shadow-xl), 0 0 0 1px var(--color-teal);
}

.pricing-card--elite:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-xl), 0 0 0 2px var(--color-teal-light);
}

/* "Most Popular" badge */
.elite-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--color-teal), var(--color-teal-light));
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-5);
  border-radius: var(--radius-full);
  white-space: nowrap;
  box-shadow: var(--shadow-teal);
}

.pricing-card-header {
  margin-bottom: var(--space-8);
}

/* Plan badge pill */
.plan-badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.plan-badge--core {
  background-color: var(--color-teal-pale);
  color: var(--color-teal);
}

.plan-badge--elite {
  background-color: rgba(14,150,136,0.2);
  color: var(--color-teal-light);
}

.plan-name {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.pricing-card--elite .plan-name {
  color: var(--color-white);
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.price-amount {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.04em;
  line-height: 1;
}

.pricing-card--elite .price-amount {
  color: var(--color-white);
}

.price-period {
  font-size: var(--font-size-md);
  color: var(--color-gray-600);
  font-weight: 500;
}

.pricing-card--elite .price-period {
  color: rgba(255,255,255,0.6);
}

.plan-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
}

.pricing-card--elite .plan-tagline {
  color: rgba(255,255,255,0.7);
}

/* Features list */
.plan-features {
  list-style: none;
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: 1.5;
}

.pricing-card--elite .plan-features li {
  color: rgba(255,255,255,0.85);
}

.check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-teal-pale);
  color: var(--color-teal);
  font-size: 0.65rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 1px;
}

.pricing-card--elite .check {
  background-color: rgba(14,150,136,0.25);
  color: var(--color-teal-light);
}

/* Pricing reassurance note */
.pricing-note {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.pricing-actions {
  display: flex;
  align-items: stretch;
  gap: var(--space-4);
}

.pricing-actions .btn {
  flex: 1 1 0;
  width: 100%;
  min-width: 0;
  min-height: 54px;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  text-align: center;
  line-height: 1.2;
  white-space: normal;
}

.pricing-card--elite .pricing-assessment-btn--elite {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.62);
  box-shadow: none;
}

.pricing-card--elite .pricing-assessment-btn--elite:hover {
  background-color: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.9);
  color: var(--color-white);
}


/* ================================================================
   14B. BOOK A CALL
================================================================ */
.book-call-section {
  background: linear-gradient(180deg, var(--color-teal-pale) 0%, var(--color-off-white) 100%);
  padding-top: var(--space-12);
}

.book-call-card {
  max-width: 920px;
  margin: 0 auto;
  padding: var(--space-8);
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.book-call-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-6);
  align-items: center;
}

.book-call-title {
  margin-bottom: var(--space-3);
  text-align: left;
}

.book-call-subtitle {
  max-width: 620px;
  margin: 0;
  text-align: left;
}

.book-call-toggle {
  min-width: 170px;
  white-space: nowrap;
}

.book-call-form-panel {
  margin-top: var(--space-7);
  padding-top: var(--space-7);
  border-top: 1px solid var(--color-gray-100);
  animation: slideDown 0.25s ease;
}

.book-call-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.book-call-fields .form-group {
  margin-bottom: 0;
}

.form-group--wide {
  grid-column: 1 / -1;
}

.book-call-form .form-submit {
  margin-top: var(--space-6);
}


/* ================================================================
   CHECKOUT SUCCESS
================================================================ */
.checkout-success {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--color-white) 0%, var(--color-teal-pale) 72%, #e0f2fe 100%);
  padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
}

.checkout-success-card {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-10);
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.checkout-success-mark {
  width: 64px;
  height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  border-radius: 50%;
  background: var(--color-teal-pale);
  color: var(--color-teal);
  font-size: var(--font-size-2xl);
  font-weight: 800;
}

.checkout-success-title {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-3xl);
}

.checkout-success-copy {
  max-width: 560px;
  margin: 0 auto var(--space-8);
  color: var(--color-gray-600);
  font-size: var(--font-size-md);
}


/* ================================================================
   LESSON HELP
================================================================ */
.lesson-help-page {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--color-white) 0%, var(--color-teal-pale) 72%, #e0f2fe 100%);
  padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-16);
}

.lesson-help-card {
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-10);
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.lesson-help-title {
  margin-bottom: var(--space-3);
  font-size: var(--font-size-3xl);
}

.lesson-help-topic {
  margin-bottom: var(--space-4);
  color: var(--color-teal);
  font-size: var(--font-size-md);
  font-weight: 800;
}

.lesson-help-description,
.lesson-help-encouragement {
  max-width: 640px;
  margin: 0 auto var(--space-8);
  color: var(--color-gray-600);
  font-size: var(--font-size-md);
}

.lesson-help-encouragement {
  margin-top: var(--space-8);
  margin-bottom: 0;
}

.lesson-video-card {
  overflow: hidden;
  background: var(--color-off-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.lesson-video-player {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-navy);
}

.lesson-video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: var(--space-8);
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
  font-weight: 700;
}


/* ================================================================
   15. FAQ
================================================================ */
.faq {
  background-color: var(--color-off-white);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-navy);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  gap: var(--space-4);
}

.faq-question:hover {
  color: var(--color-teal);
  background-color: var(--color-teal-pale);
}

.faq-question[aria-expanded="true"] {
  color: var(--color-teal);
  background-color: var(--color-teal-pale);
}

.faq-icon {
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--color-teal);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  line-height: 1;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-5);
  animation: slideDown 0.25s ease;
}

.faq-answer p {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  line-height: 1.8;
}


/* ================================================================
   16. FOOTER
================================================================ */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: var(--space-16) 0 0;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.footer-logo .logo-text {
  color: var(--color-white);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-end;
}

.footer-link {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
  text-align: right;
}

.footer-link:hover {
  color: var(--color-teal-light);
}

.footer-cta-link {
  color: var(--color-teal-light);
  font-weight: 600;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--space-6) var(--container-padding);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.4);
}


/* ================================================================
   17. FLOATING BUTTON
================================================================ */
.floating-btn {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, var(--color-teal), #0c7c71);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: 700;
  box-shadow: 0 6px 24px rgba(14,150,136,0.4), 0 2px 8px rgba(0,0,0,0.15);
  cursor: pointer;
  transition:
    transform var(--transition-bounce),
    box-shadow var(--transition-base),
    opacity var(--transition-base);
  animation: floatIn 0.8s ease 1s both;
}

.floating-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 32px rgba(14,150,136,0.5), 0 4px 12px rgba(0,0,0,0.2);
}

.floating-btn:active {
  transform: scale(0.97);
}

.floating-btn-icon {
  font-size: 1rem;
}

/* Hide text on smallest screens (icon only) */


/* ================================================================
   18. MODAL & CONTACT FORM
================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background-color: rgba(15, 28, 46, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-10);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-xl);
  transform: translateY(16px) scale(0.98);
  transition:
    transform var(--transition-slow),
    opacity var(--transition-slow);
  opacity: 0;

  /* Scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--color-gray-200) transparent;
}

.modal-overlay.open .modal-box {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-navy);
}

.modal-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.modal-logo {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.modal-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Form */
#contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.site-contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-modal-box {
  max-width: 500px;
}

.contact-direct-email {
  margin: 0;
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  text-align: center;
}

.contact-direct-email a {
  color: var(--color-teal);
  font-weight: 700;
  text-decoration: none;
}

.contact-direct-email a:hover {
  text-decoration: underline;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
}

.required {
  color: var(--color-teal);
}

.optional {
  color: var(--color-gray-400);
  font-weight: 400;
}

.form-input {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--color-navy);
  background-color: var(--color-off-white);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-teal);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(14,150,136,0.12);
}

.form-input.error {
  border-color: var(--color-error);
  background-color: #fff5f5;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-textarea {
  resize: vertical;
  min-height: 90px;
}

.field-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  min-height: 1em;
  font-weight: 500;
}

/* Submit button states */
.form-submit {
  margin-top: var(--space-2);
  padding: 1rem;
  font-size: var(--font-size-md);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Form result messages */
.form-message {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  text-align: center;
}

.form-submitted .form-group,
.form-submitted .form-submit {
  display: none;
}

.form-submitted .form-message--success {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-sm);
}

.form-submitted .form-message--success strong {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-lg);
}

.form-message--success {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.form-message--error {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}


/* ================================================================
   TEACHER REFERRAL PORTAL
================================================================ */

.teacher-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(14, 150, 136, 0.13), transparent 34rem),
    linear-gradient(135deg, #f8fafc 0%, #e6f7f5 100%);
  color: var(--color-navy);
}

.teacher-shell,
.teacher-dashboard-shell {
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
  padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-12);
}

.teacher-entry-card,
.teacher-dashboard-header,
.teacher-referral-card,
.teacher-panel-card {
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.96);
  box-shadow: var(--shadow-xl);
}

.teacher-entry-card {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-8);
}

.teacher-entry-copy {
  margin-bottom: var(--space-6);
  text-align: center;
}

.teacher-entry-copy h1,
.teacher-dashboard-header h1 {
  margin-bottom: var(--space-3);
  color: var(--color-navy);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.teacher-entry-copy p,
.teacher-dashboard-header p,
.teacher-referral-card p,
.teacher-panel-card p {
  color: var(--color-gray-600);
  line-height: 1.65;
}

.teacher-form {
  display: grid;
  gap: var(--space-4);
}

.teacher-form label,
.teacher-link-label {
  display: grid;
  gap: var(--space-2);
  color: var(--color-navy);
  font-size: var(--font-size-sm);
  font-weight: 800;
}

.teacher-form label span {
  color: var(--color-gray-400);
  font-size: var(--font-size-xs);
}

.teacher-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding: var(--space-2);
  border: 1px solid #dce8ec;
  border-radius: var(--radius-full);
  background: var(--color-off-white);
}

.teacher-tab {
  min-height: 44px;
  border: 0;
  border-radius: var(--radius-full);
  color: var(--color-gray-700);
  background: transparent;
  font: inherit;
  font-size: var(--font-size-sm);
  font-weight: 900;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base);
}

.teacher-tab.is-active {
  color: var(--color-white);
  background: var(--color-teal);
  box-shadow: var(--shadow-teal);
}

.teacher-tab-panel {
  display: none;
  padding: var(--space-5);
  border: 1px solid #dce8ec;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.86);
}

.teacher-tab-panel.is-active {
  display: block;
}

.teacher-tab-panel h2 {
  margin-bottom: var(--space-2);
  color: var(--color-navy);
  font-size: var(--font-size-2xl);
}

.teacher-tab-panel > p {
  margin-bottom: var(--space-5);
  color: var(--color-gray-600);
  line-height: 1.6;
}

.teacher-confirmation {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid rgba(14,150,136,0.2);
  border-radius: var(--radius-lg);
  background: var(--color-teal-pale);
  text-align: center;
}

.teacher-secondary-link {
  display: inline-flex;
  justify-content: center;
  margin-top: var(--space-2);
  color: var(--color-teal);
  font-size: var(--font-size-sm);
  font-weight: 900;
  text-decoration: none;
}

.teacher-secondary-link:hover {
  text-decoration: underline;
}

.teacher-dashboard-shell {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
}

.teacher-dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  padding: 34px;
  border: 1px solid #dce8ec;
  border-radius: 24px;
  background: rgba(255,255,255,0.98);
  box-shadow: 0 14px 34px rgba(15, 35, 60, 0.08);
}

.teacher-dashboard-header > div:first-child {
  min-width: 0;
  padding: var(--space-1) 0;
}

.teacher-dashboard-header .section-eyebrow {
  margin-bottom: 14px;
}

.teacher-dashboard-header h1 {
  margin-bottom: var(--space-3);
  font-size: clamp(1.9rem, 4vw, 2.75rem);
}

.teacher-status-pill,
.teacher-referral-status {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 220px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid rgba(14,150,136,0.18);
  border-radius: var(--radius-lg);
  color: var(--color-teal);
  background: var(--color-teal-pale);
  font-size: var(--font-size-sm);
  font-weight: 800;
}

.teacher-status-pill span {
  color: var(--color-gray-600);
  font-size: var(--font-size-xs);
  font-weight: 700;
  line-height: 1.45;
}

.teacher-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  min-width: 0;
}

.teacher-referral-card,
.teacher-panel-card {
  padding: var(--space-6);
  min-width: 0;
  max-width: 100%;
}

.teacher-referral-card {
  display: grid;
  gap: var(--space-5);
}

.teacher-options-stack {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
  max-width: 100%;
}

.teacher-share-option {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
}

.teacher-share-option--scan {
  background: rgba(255,255,255,0.96);
}

.teacher-share-option-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.teacher-option-label {
  margin: 0;
  color: var(--color-teal);
  font-size: var(--font-size-xs);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.teacher-share-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 var(--space-4);
  border: 1px solid rgba(14,150,136,0.25);
  border-radius: var(--radius-full);
  color: var(--color-teal);
  background: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(15, 35, 60, 0.06);
}

.teacher-scan-box {
  display: grid;
  justify-items: center;
  gap: var(--space-4);
  width: 100%;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  padding: var(--space-5);
  border: 1px solid rgba(14,150,136,0.18);
  border-radius: 22px;
  background: var(--color-white);
  text-align: center;
}

.teacher-scan-box h2 {
  margin: 0;
  color: var(--color-teal);
  font-size: clamp(1.45rem, 4vw, 2rem);
  font-weight: 900;
}

.teacher-scan-box p {
  margin: 0;
  color: var(--color-navy);
  font-size: var(--font-size-md);
  font-weight: 900;
}

.teacher-marketing-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(230px, 0.75fr);
  gap: var(--space-6);
  overflow: hidden;
  padding: var(--space-6);
  border: 1px solid #dce8ec;
  border-radius: 24px;
  background:
    radial-gradient(circle at 8% 8%, rgba(14,150,136,0.12), transparent 12rem),
    linear-gradient(135deg, #ffffff 0%, #f4fbfb 100%);
  box-shadow: 0 18px 40px rgba(15, 35, 60, 0.10);
}

.teacher-marketing-card::after {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -64px;
  width: 180px;
  height: 180px;
  border: 28px solid rgba(14,150,136,0.08);
  border-radius: 50%;
  pointer-events: none;
}

.teacher-card-brand {
  margin-bottom: var(--space-3);
}

.teacher-marketing-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.teacher-referred-by {
  display: inline-flex;
  width: fit-content;
  margin: 0;
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(14,150,136,0.18);
  border-radius: var(--radius-full);
  color: var(--color-teal) !important;
  background: var(--color-teal-pale);
  font-size: var(--font-size-xs);
  font-weight: 900;
}

.teacher-marketing-copy h2,
.teacher-panel-card h2 {
  margin-bottom: var(--space-3);
  color: var(--color-navy);
  font-size: var(--font-size-2xl);
}

.teacher-marketing-copy h2 {
  max-width: 430px;
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  line-height: 1.05;
}

.teacher-marketing-copy p {
  max-width: 490px;
  font-size: var(--font-size-md);
}

.teacher-card-helper {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  font-weight: 800;
}

.teacher-card-helper span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--color-white);
  background: var(--color-teal);
  font-size: var(--font-size-sm);
}

.teacher-marketing-qr {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: var(--space-3);
  padding-left: var(--space-6);
  border-left: 1px solid #dce8ec;
  text-align: center;
}

.teacher-marketing-qr h3 {
  color: var(--color-teal);
  font-size: var(--font-size-md);
  font-weight: 900;
}

.teacher-marketing-qr p {
  margin: 0;
  color: var(--color-gray-500);
  font-size: var(--font-size-xs);
  font-weight: 800;
}

.teacher-qr-frame {
  max-width: 100%;
  padding: var(--space-3);
  border: 2px solid rgba(14,150,136,0.28);
  border-radius: 22px;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

.teacher-qr {
  display: block;
  width: 220px;
  height: 220px;
  border-radius: var(--radius-md);
}

.teacher-copy-status {
  min-height: 22px;
  margin-top: var(--space-3);
  color: var(--color-teal);
  font-size: var(--font-size-sm);
  font-weight: 800;
  text-align: center;
}

.teacher-checkbox {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: flex-start;
  gap: var(--space-3) !important;
  padding: var(--space-4);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  background: var(--color-off-white);
  color: var(--color-gray-700) !important;
  font-weight: 700 !important;
}

.teacher-checkbox input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex: 0 0 auto;
}

.teacher-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
  margin-bottom: var(--space-4);
}

.teacher-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
}

.teacher-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.teacher-table th,
.teacher-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-gray-100);
  text-align: left;
  vertical-align: top;
}

.teacher-table th {
  color: var(--color-gray-600);
  background: var(--color-off-white);
  font-size: var(--font-size-xs);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.teacher-table tr:last-child td {
  border-bottom: 0;
}

.teacher-referral-status {
  min-width: 0;
  display: inline-flex;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

@media (max-width: 820px) {
  .teacher-body {
    overflow-x: hidden;
  }

  .teacher-dashboard-header,
  .teacher-dashboard-grid {
    grid-template-columns: 1fr;
    min-width: 0;
    max-width: 100%;
  }

  .teacher-dashboard-header {
    align-items: stretch;
    flex-direction: column;
    gap: var(--space-4);
    padding: 22px;
    overflow: hidden;
  }

  .teacher-dashboard-header p,
  .teacher-status-pill,
  .teacher-checkbox span {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: break-word;
  }

  .teacher-entry-card,
  .teacher-referral-card,
  .teacher-panel-card {
    padding: var(--space-4);
    overflow: hidden;
  }

  .teacher-dashboard-shell {
    width: calc(100% - 20px);
    max-width: 1120px;
    gap: var(--space-4);
    padding-top: calc(var(--header-height) + var(--space-5));
  }

  .teacher-dashboard-grid,
  .teacher-options-stack {
    gap: var(--space-4);
  }

  .teacher-share-option {
    gap: var(--space-3);
  }

  .teacher-marketing-card {
    grid-template-columns: 1fr;
    padding: var(--space-5);
  }

  .teacher-marketing-qr {
    padding-top: var(--space-5);
    padding-left: 0;
    border-top: 1px solid #dce8ec;
    border-left: 0;
  }

  .teacher-share-option-head {
    align-items: center;
    gap: var(--space-3);
  }

  .teacher-share-button {
    min-width: 88px;
    min-height: 38px;
    padding: 0 var(--space-3);
    font-size: var(--font-size-xs);
  }

  .teacher-scan-box {
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: 18px;
  }

  .teacher-scan-box h2 {
    font-size: 1.45rem;
  }

  .teacher-scan-box p {
    font-size: var(--font-size-sm);
    line-height: 1.35;
  }

  .teacher-option-label {
    font-size: 0.7rem;
    letter-spacing: 0.06em;
  }

  .teacher-referred-by {
    max-width: calc(100% - 100px);
    padding: 5px 10px;
    font-size: 0.75rem;
    line-height: 1.25;
  }

  .teacher-qr {
    width: 172px;
    max-width: calc(100vw - 118px);
    height: auto;
  }

  .teacher-qr-frame {
    padding: var(--space-2);
    border-radius: 18px;
  }

  .teacher-link-label {
    gap: var(--space-2);
  }

  .teacher-share-option .form-input {
    width: 100%;
    max-width: 100%;
    min-height: 48px;
    font-size: var(--font-size-sm);
  }

  .teacher-share-option .btn,
  .teacher-panel-card .form-submit {
    min-height: 50px;
    font-size: var(--font-size-sm);
  }

  .teacher-panel-card h2 {
    margin-bottom: var(--space-3);
    font-size: 1.45rem;
    line-height: 1.15;
  }

  .teacher-marketing-copy h2 {
    font-size: clamp(1.7rem, 8vw, 2.25rem);
  }
}

@media (max-width: 420px) {
  .teacher-dashboard-shell {
    width: calc(100% - 14px);
    max-width: 1120px;
  }

  .teacher-dashboard-header,
  .teacher-entry-card,
  .teacher-referral-card,
  .teacher-panel-card {
    padding: var(--space-3);
    border-radius: 18px;
  }

  .teacher-share-option-head {
    align-items: stretch;
    flex-direction: column;
  }

  .teacher-referred-by {
    max-width: 100%;
    justify-content: center;
    text-align: center;
  }

  .teacher-share-button {
    width: 100%;
  }

  .teacher-qr {
    width: 150px;
    max-width: calc(100vw - 96px);
  }
}


/* ================================================================
   19. ANIMATIONS & TRANSITIONS
================================================================ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-20px) rotate(3deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.85); }
}

@keyframes pathPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50%       { opacity: 0.8; transform: scale(1.3); }
}

@keyframes floatIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal: elements start invisible */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children delay */
.reveal-stagger > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.5s; }


/* ================================================================
   21. RESPONSIVE — TABLET (max 1024px)
================================================================ */
@media (max-width: 1024px) {
  :root {
    --container-padding: var(--space-5);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  /* Nav */
  .nav-links {
    gap: var(--space-5);
  }

  /* Hero */
  .hero {
    min-height: 75vh;
  }

  /* How It Works image — full width on tablet */
  .hiw-visual {
    border-radius: var(--radius-lg);
  }

  /* Personalized preview: stack copy and visual on tablet */
  .learning-preview-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .learning-preview-copy {
    max-width: 680px;
    text-align: center;
    margin: 0 auto;
  }

  .learning-preview-actions {
    align-items: center;
  }

  .explanation-b {
    background-position: 82% center;
  }

  .explanation-b-copy::before {
    opacity: 1;
  }

  .learning-preview-visual {
    min-height: clamp(520px, 76vw, 640px);
  }

  .preview-card {
    width: clamp(220px, 29vw, 320px);
  }

  /* Steps: 2 columns on tablet */
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid::before {
    display: none;
  }

  /* Benefits: 2 columns */
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* BFE layout: stack */
  .bfe-layout {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Photos: stack or 2 cols */
  .photo-grid {
    grid-template-columns: 1fr 1fr;
  }

  .photo-card--featured {
    transform: none;
  }

  .photo-card--featured:hover {
    transform: translateY(-6px);
  }

  /* Pricing: stack */
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .pricing-card--elite {
    transform: none;
  }

  .pricing-card--elite:hover {
    transform: translateY(-4px);
  }
}


/* ================================================================
   22. RESPONSIVE — MOBILE (max 768px)
================================================================ */
@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
    --header-height: 64px;
  }

  /* Header */
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding: var(--space-16) 0 var(--space-16);
    text-align: center;
  }

  .hero-headline {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }

  .explainer-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .explainer-cta-group .btn {
    width: 100%;
  }

  .explanation-b {
    min-height: auto;
    padding: var(--space-16) 0;
    background-image: none;
  }

  .explanation-b-inner {
    display: grid;
    gap: var(--space-8);
    min-height: auto;
  }

  .explanation-b-copy {
    max-width: 680px;
    text-align: center;
    margin: 0 auto;
    padding-top: 0;
  }

  .explanation-b-copy::before {
    opacity: 0;
  }

  .explanation-b-copy .section-title {
    font-size: clamp(1.75rem, 8vw, 2.35rem);
  }

  .explanation-b-mobile-image {
    display: block;
    width: 100%;
    height: auto;
    min-height: 0;
    max-height: none;
    object-fit: contain;
    object-position: top center;
    background: none;
  }

  .learning-preview {
    padding: var(--space-16) 0;
  }

  .learning-preview-copy .section-title {
    font-size: clamp(1.75rem, 8vw, 2.35rem);
  }

  .learning-preview-text {
    font-size: var(--font-size-base);
    line-height: 1.72;
  }

  .learning-preview-actions {
    display: flex;
    width: 100%;
  }

  .learning-preview-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .learning-preview-visual {
    display: grid;
    gap: var(--space-4);
    min-height: auto;
  }

  .learning-preview-image {
    position: relative;
    inset: auto;
    min-height: 300px;
    aspect-ratio: 4 / 3;
    border-radius: 0;
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 82%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 82%, transparent 100%);
  }

  .preview-card {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    width: 100%;
    min-height: auto;
    padding: var(--space-4) var(--space-5) 0;
    cursor: default;
  }

  .preview-card--learning,
  .preview-card--help {
    width: 100%;
  }

  .preview-card-main {
    grid-template-columns: minmax(0, 1fr) 76px;
    min-height: auto;
  }

  .preview-card-badge {
    width: 32px;
    top: -12px;
    left: 16px;
  }

  .preview-card-details {
    max-height: none;
    margin-top: var(--space-3);
    opacity: 1;
    overflow: visible;
    transform: none;
  }

  .preview-card:hover,
  .preview-card:focus-visible {
    transform: none;
    border-color: rgba(203,213,225,0.78);
    box-shadow: 0 12px 30px rgba(15,28,46,0.09), 0 4px 12px rgba(14,150,136,0.06);
  }

  .pricing-actions {
    flex-direction: column;
  }

  .book-call-card {
    padding: var(--space-6);
  }

  .book-call-summary {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    text-align: center;
  }

  .book-call-title,
  .book-call-subtitle {
    text-align: center;
  }

  .book-call-toggle {
    width: 100%;
  }

  .book-call-fields {
    grid-template-columns: 1fr;
  }

  .hero-trust {
    flex-direction: column;
    align-items: center;
  }

  /* Sections */
  .section {
    padding: var(--space-16) 0;
  }

  .section-header {
    margin-bottom: var(--space-10);
  }

  /* How It Works image — tighter radius on mobile */
  .hiw-visual {
    border-radius: var(--radius-md);
    margin-bottom: var(--space-10);
  }

  .hiw-visual-caption {
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

  /* Steps: single column */
  .steps-grid {
    grid-template-columns: 1fr;
  }

  /* Benefits: single column */
  .benefits-grid {
    grid-template-columns: 1fr;
  }

  /* BFE adjustments: single column */
  .bfe-adjustments {
    grid-template-columns: 1fr;
  }

  /* Photos: single column */
  .photo-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    gap: var(--space-8);
  }

  .footer-links {
    align-items: flex-start;
  }

  /* Floating button */
  .floating-btn {
    bottom: var(--space-5);
    right: var(--space-4);
    padding: var(--space-4) var(--space-5);
  }

  /* Modal */
  .modal-box {
    padding: var(--space-8) var(--space-6);
    margin: var(--space-4);
    max-height: 95vh;
  }
}


/* ================================================================
   23. RESPONSIVE — SMALL MOBILE (max 480px)
================================================================ */
@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.7rem;
  }

  .section-title {
    font-size: var(--font-size-xl);
  }

  .photo-img {
    height: 200px;
  }

  .pricing-card {
    padding: var(--space-6);
  }

  .lesson-help-card {
    padding: var(--space-6);
  }

  .lesson-help-title {
    font-size: var(--font-size-xl);
  }

  .lesson-video-placeholder {
    min-height: 200px;
  }

  .explanation-b-mobile-image {
    min-height: 0;
  }

  .learning-preview-image {
    min-height: 240px;
  }

  .preview-card {
    border-radius: var(--radius-lg);
  }

  .preview-card-main {
    grid-template-columns: minmax(0, 1fr) 64px;
    gap: var(--space-2);
  }

  .preview-card-footer {
    font-size: 0.7rem;
    border-radius: 0 0 calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px);
  }

  .modal-box {
    padding: var(--space-6) var(--space-5);
  }

  .floating-btn-text {
    display: none;
  }

  .floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    padding: 0;
    justify-content: center;
  }

  .floating-btn-icon {
    font-size: 1.4rem;
  }
}