/* ============================================================
   GainzTea — Main Stylesheet
   Design System: website/design-system.md
   Font: Inter Tight (Google Fonts)
   ============================================================ */

/* ── Google Fonts Import ── */
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ── CSS Custom Properties (Design Tokens) ── */
:root {
  /* Colors */
  --color-primary:            #5BD1F6;
  --color-primary-dark:       #1FA8D9;
  --color-secondary:          #2FE08D;
  --color-success:            #15B756;
  --color-error:              #FF4E64;
  --color-warning:            #FFB319;
  --color-info:               #2276F4;
  --color-bg:                 #F9F9F9;
  --color-surface:            #EBEBEB;
  --color-text-primary:       #333333;
  --color-text-secondary:     #666666;
  --color-dark-bg:            #111827;
  --color-dark-surface:       #192230;
  --color-dark-text:          #E0E0E0;
  --color-dark-text-secondary:#AAAAAA;
  --color-white:              #FFFFFF;
  --color-border:             #E2E2E2;
  --gradient-hero:            linear-gradient(135deg, #5BD1F6 0%, #2FE08D 100%);

  /* Typography */
  --font-family:              'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  --text-display:             clamp(40px, 6vw, 56px);
  --text-h1:                  clamp(32px, 5vw, 48px);
  --text-h2:                  clamp(26px, 4vw, 40px);
  --text-h3:                  clamp(22px, 3vw, 32px);
  --text-h4:                  24px;
  --text-h5:                  20px;
  --text-h6:                  18px;
  --text-body-lg:             18px;
  --text-body:                16px;
  --text-body-sm:             14px;
  --text-xs:                  12px;
  --text-label:               14px;
  --text-cta:                 16px;

  /* Spacing */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  24px;
  --space-6:  32px;
  --space-7:  48px;
  --space-8:  64px;
  --space-9:  96px;
  --space-10: 128px;

  /* Border Radius */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.12);
  --shadow-sky: 0 4px 24px rgba(91,209,246,0.30);

  /* Layout */
  --container-max:  1200px;
  --container-pad:  80px;
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: none;
  transition: color 200ms ease-out;
}

a:hover {
  color: var(--color-primary);
}

ul, ol {
  list-style: none;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); font-weight: 700; }
h4 { font-size: var(--text-h4); font-weight: 600; }
h5 { font-size: var(--text-h5); font-weight: 600; }
h6 { font-size: var(--text-h6); font-weight: 600; }

p {
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}

p:last-child { margin-bottom: 0; }

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

blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-6) 0;
  background: rgba(91,209,246,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

blockquote p {
  font-size: var(--text-body-lg);
  font-style: italic;
  color: var(--color-text-primary);
  margin: 0;
}

/* ── Layout Utilities ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--space-9) 0;
}

.section--dark {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
  color: var(--color-dark-text);
}

.section--dark p {
  color: var(--color-dark-text-secondary);
}

.section--surface {
  background-color: var(--color-surface);
}

.section--gradient {
  background: var(--gradient-hero);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.flex {
  display: flex;
  gap: var(--space-4);
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.text-center { text-align: center; }
.text-left   { text-align: left; }

/* ── Section Tag / Label ── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(91,209,246,0.12);
  color: var(--color-primary-dark);
  font-size: var(--text-label);
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.section-tag--dark {
  background: rgba(91,209,246,0.15);
  color: var(--color-primary);
}

/* ── Section Header ── */
.section-header {
  margin-bottom: var(--space-8);
}

.section-header--center {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-8);
}

.section-header p {
  font-size: var(--text-body-lg);
  margin-top: var(--space-4);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-family);
  font-size: var(--text-cta);
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 200ms ease-out;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sky);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(91,209,246,0.40);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

.btn--ghost-dark {
  background: transparent;
  color: var(--color-dark-text);
  border-color: rgba(255,255,255,0.25);
}

.btn--ghost-dark:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--lg {
  font-size: 18px;
  padding: 16px 36px;
}

.btn--sm {
  font-size: var(--text-body-sm);
  padding: 10px 20px;
}

/* ── Cards ── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease-out, transform 200ms ease-out;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card--dark {
  background: var(--color-dark-surface);
  color: var(--color-dark-text);
}

.card--dark h3,
.card--dark h4,
.card--dark h5 {
  color: var(--color-dark-text);
}

.card--dark p {
  color: var(--color-dark-text-secondary);
}

/* ── Feature Card ── */
.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease-out, transform 200ms ease-out;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  background: rgba(91,209,246,0.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: 22px;
}

.feature-card__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary-dark);
  background: rgba(91,209,246,0.10);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.feature-card h4 {
  margin-bottom: var(--space-3);
  font-size: var(--text-h5);
}

.feature-card p {
  font-size: var(--text-body-sm);
  margin: 0;
}

/* ── Inputs ── */
.input {
  width: 100%;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-family: var(--font-family);
  font-size: var(--text-body);
  color: var(--color-text-primary);
  transition: border-color 200ms ease-out, box-shadow 200ms ease-out;
  outline: none;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(91,209,246,0.20);
}

.input::placeholder {
  color: var(--color-text-secondary);
}

/* ── Waitlist Form ── */
.waitlist-form {
  display: flex;
  gap: var(--space-3);
  max-width: 480px;
}

.waitlist-form .input {
  flex: 1;
}

.waitlist-form__note {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
}

.waitlist-form--dark .input {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
  color: var(--color-dark-text);
}

.waitlist-form--dark .input::placeholder {
  color: var(--color-dark-text-secondary);
}

.waitlist-form--dark .input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(91,209,246,0.20);
}

.waitlist-form--dark .waitlist-form__note {
  color: var(--color-dark-text-secondary);
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(249,249,249,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 200ms ease-out;
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.nav__logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav__logo span {
  color: var(--color-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-7);
}

.nav__links a {
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 200ms ease-out;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text-primary);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all 200ms ease-out;
}

/* Mobile nav */
.nav__mobile {
  display: none;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile a {
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
}

.nav__mobile .btn {
  width: 100%;
  justify-content: center;
}

/* ── Hero Section ── */
.hero {
  background-color: var(--color-dark-bg);
  padding: var(--space-10) 0 var(--space-9);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(91,209,246,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(47,224,141,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.hero__content {}

.hero__headline {
  font-size: var(--text-display);
  font-weight: 800;
  color: var(--color-dark-text);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}

.hero__headline .highlight {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: var(--text-body-lg);
  color: var(--color-dark-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  max-width: 520px;
}

.hero__cta-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.hero__trust {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero__trust-item::before {
  content: '✓';
  color: var(--color-secondary);
  font-weight: 700;
  font-size: 13px;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ── App Mockup (CSS-drawn) ── */
.app-mockup {
  width: 280px;
  background: var(--color-dark-surface);
  border-radius: 28px;
  padding: var(--space-5);
  box-shadow: 0 24px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.06);
  position: relative;
}

.app-mockup__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.app-mockup__title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-dark-text);
}

.app-mockup__badge {
  background: var(--color-primary);
  color: var(--color-dark-bg);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.macro-ring-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.macro-ring {
  width: 100px;
  height: 100px;
  position: relative;
}

.macro-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.macro-ring__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.macro-ring__calories {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-dark-text);
  line-height: 1;
}

.macro-ring__label {
  font-size: 9px;
  color: var(--color-dark-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.macro-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.macro-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.macro-bar__label {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-dark-text-secondary);
  width: 40px;
  flex-shrink: 0;
}

.macro-bar__track {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.macro-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.macro-bar__fill--protein { background: var(--color-primary); }
.macro-bar__fill--carbs   { background: var(--color-secondary); }
.macro-bar__fill--fat     { background: var(--color-warning); }

.macro-bar__value {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-dark-text);
  width: 28px;
  text-align: right;
  flex-shrink: 0;
}

.chat-preview {
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.chat-preview__title {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-dark-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.chat-msg {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.chat-msg__avatar {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

.chat-msg__avatar--a { background: var(--color-primary); color: var(--color-dark-bg); }
.chat-msg__avatar--b { background: var(--color-secondary); color: var(--color-dark-bg); }
.chat-msg__avatar--c { background: var(--color-warning); color: var(--color-dark-bg); }

.chat-msg__bubble {
  background: rgba(255,255,255,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) var(--radius-sm);
  padding: 5px 8px;
  font-size: 10px;
  color: var(--color-dark-text);
  line-height: 1.4;
}

.chat-msg__bubble .pr-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: rgba(91,209,246,0.15);
  color: var(--color-primary);
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-top: 3px;
}

/* ── Stats Strip ── */
.stats-strip {
  background: var(--color-dark-surface);
  padding: var(--space-7) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.stats-strip__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  text-align: center;
}

.stat-item__number {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
  letter-spacing: -0.03em;
}

.stat-item__label {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
  font-weight: 500;
}

/* ── Problem Section ── */
.problem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.problem-item__icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.problem-item__text {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.problem-item__text strong {
  display: block;
  color: var(--color-text-primary);
  font-weight: 600;
  margin-bottom: 2px;
}

/* ── Feature Grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

/* ── Comparison Table ── */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.comparison-table th {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-body-sm);
  font-weight: 700;
  text-align: left;
  background: var(--color-dark-bg);
  color: var(--color-dark-text);
  letter-spacing: 0.02em;
}

.comparison-table th:last-child {
  background: var(--color-primary);
  color: var(--color-dark-bg);
}

.comparison-table td {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--color-text-primary);
}

.comparison-table td:last-child {
  background: rgba(91,209,246,0.05);
  font-weight: 600;
  color: var(--color-text-primary);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table .check-yes {
  color: var(--color-success);
  font-weight: 700;
}

.comparison-table .check-no {
  color: var(--color-error);
}

/* ── Origin Story Section ── */
.origin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.origin-content blockquote {
  background: rgba(91,209,246,0.08);
  border-left-color: var(--color-primary);
}

/* ── Beliefs List ── */
.beliefs-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.belief-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.belief-item__number {
  width: 36px;
  height: 36px;
  background: var(--gradient-hero);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-dark-bg);
  flex-shrink: 0;
}

.belief-item__content h4 {
  margin-bottom: var(--space-2);
  font-size: var(--text-h5);
}

.belief-item__content p {
  font-size: var(--text-body-sm);
  margin: 0;
}

/* ── Promise List ── */
.promise-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.promise-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4) var(--space-5);
  background: var(--color-dark-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.promise-item__icon {
  font-size: 20px;
  flex-shrink: 0;
}

.promise-item__text strong {
  display: block;
  color: var(--color-dark-text);
  font-weight: 600;
  margin-bottom: 4px;
}

.promise-item__text p {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
  margin: 0;
}

/* ── CTA Section ── */
.cta-section {
  background: var(--color-dark-bg);
  padding: var(--space-10) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(91,209,246,0.10) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.cta-section h2 {
  color: var(--color-dark-text);
  margin-bottom: var(--space-4);
}

.cta-section p {
  color: var(--color-dark-text-secondary);
  font-size: var(--text-body-lg);
  margin-bottom: var(--space-6);
}

.cta-section .waitlist-form {
  margin: 0 auto var(--space-3);
  justify-content: center;
}

/* ── Trainer Features ── */
.trainer-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.trainer-feature {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-5);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease-out, transform 200ms ease-out;
}

.trainer-feature:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.trainer-feature__icon {
  width: 52px;
  height: 52px;
  background: rgba(91,209,246,0.10);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.trainer-feature__content h4 {
  margin-bottom: var(--space-2);
}

.trainer-feature__content p {
  font-size: var(--text-body-sm);
  margin: 0;
}

/* ── Roadmap List ── */
.roadmap-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.roadmap-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.06);
}

.roadmap-item__dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
  opacity: 0.6;
}

.roadmap-item__text {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
}

.roadmap-item__text strong {
  color: var(--color-dark-text);
}

/* ── Footer ── */
.footer {
  background: var(--color-dark-bg);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-8) 0 var(--space-6);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer__brand {}

.footer__logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-dark-text);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
  display: block;
  text-decoration: none;
}

.footer__logo span {
  color: var(--color-primary);
}

.footer__tagline {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-dark-text-secondary);
  font-size: 14px;
  transition: all 200ms ease-out;
  text-decoration: none;
}

.footer__social a:hover {
  background: var(--color-primary);
  color: var(--color-dark-bg);
}

.footer__col-title {
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--color-dark-text);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-body-sm);
  color: var(--color-dark-text-secondary);
  text-decoration: none;
  transition: color 200ms ease-out;
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-dark-text-secondary);
}

.footer__legal {
  display: flex;
  gap: var(--space-5);
}

.footer__legal a {
  font-size: var(--text-xs);
  color: var(--color-dark-text-secondary);
  text-decoration: none;
  transition: color 200ms ease-out;
}

.footer__legal a:hover {
  color: var(--color-primary);
}

/* ── Page Hero (inner pages) ── */
.page-hero {
  background: var(--color-dark-bg);
  padding: var(--space-9) 0 var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(91,209,246,0.10) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.page-hero h1 {
  color: var(--color-dark-text);
  margin-bottom: var(--space-4);
}

.page-hero p {
  font-size: var(--text-body-lg);
  color: var(--color-dark-text-secondary);
  margin-bottom: var(--space-6);
}

/* ── 404 Page ── */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-dark-bg);
}

.error-page__inner {
  padding: var(--space-9) var(--container-pad);
  max-width: 560px;
}

.error-page__code {
  font-size: 120px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
}

.error-page h1 {
  color: var(--color-dark-text);
  font-size: var(--text-h2);
  margin-bottom: var(--space-3);
}

.error-page p {
  color: var(--color-dark-text-secondary);
  margin-bottom: var(--space-6);
}

.error-page__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Animations ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.animate-fade-up {
  animation: fadeUp 0.5s ease-out forwards;
}

.animate-fade-up--delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-fade-up--delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-fade-up--delay-3 { animation-delay: 0.3s; opacity: 0; }
.animate-fade-up--delay-4 { animation-delay: 0.4s; opacity: 0; }

/* Intersection observer driven */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* ── Utility Classes ── */
.mt-0  { margin-top: 0; }
.mt-4  { margin-top: var(--space-4); }
.mt-5  { margin-top: var(--space-5); }
.mt-6  { margin-top: var(--space-6); }
.mt-7  { margin-top: var(--space-7); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-5  { margin-bottom: var(--space-5); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-7  { margin-bottom: var(--space-7); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  :root {
    --container-pad: 48px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__sub {
    max-width: 100%;
  }

  .hero__trust {
    justify-content: center;
  }

  .hero__visual {
    order: -1;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .stats-strip__inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .origin-grid {
    grid-template-columns: 1fr;
  }

  .comparison-table {
    font-size: 13px;
  }
}

@media (max-width: 768px) {
  :root {
    --container-pad: 24px;
  }

  .section {
    padding: var(--space-8) 0;
  }

  .nav__links,
  .nav__actions .btn {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .hero {
    padding: var(--space-8) 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .waitlist-form {
    flex-direction: column;
    max-width: 100%;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .stats-strip__inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .comparison-table {
    display: block;
    overflow-x: auto;
  }

  .app-mockup {
    width: 240px;
  }

  .cta-section .waitlist-form {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .stats-strip__inner {
    grid-template-columns: 1fr 1fr;
  }

  .hero__cta-group {
    align-items: stretch;
  }

  .btn--lg {
    font-size: 16px;
    padding: 14px 24px;
  }
}