/* That Watch App - Design System Styles */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* CSS Variables - Design Tokens */
:root {
  /* Colors - Dark Mode */
  --color-obsidian: #0D0D0D;
  --color-deep-navy: #16213E;
  --color-champagne-gold: #C9A96E;
  --color-warm-ivory: #FAF8F5;
  --color-rhodium: #C0C0C8;
  --color-soft-gold: #D4AF37;
  --color-border: rgba(192, 192, 200, 0.12);

  /* Typography */
  --font-display: 'Cormorant Garamond', 'Playfair Display', 'EB Garamond', Georgia, serif;
  --font-body: 'DM Sans', 'Outfit', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --spacing-xxl: 80px;

  /* Layout */
  --max-width: 800px;
  --max-width-wide: 1100px;
  --border-radius: 12px;

  /* Animation */
  --ease-standard: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-entrance: cubic-bezier(0, 0, 0.2, 1);
  --ease-exit: cubic-bezier(0.4, 0, 1, 1);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-obsidian);
  color: var(--color-warm-ivory);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-warm-ivory);
}

h1 {
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-rhodium);
}

a {
  color: var(--color-champagne-gold);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--wide {
  max-width: var(--max-width-wide);
}

main {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* Header */
.header {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.header__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-warm-ivory);
}

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

.header__back {
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.header__back::before {
  content: '\2190';
}

/* Hero Section (legacy) */
.hero {
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.hero__title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-warm-ivory);
}

.hero__tagline {
  font-size: 1.25rem;
  color: var(--color-rhodium);
  margin-bottom: var(--spacing-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero__badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-deep-navy);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-champagne-gold);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
}

/* Cards */
.card {
  background-color: var(--color-deep-navy);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.card__title {
  color: var(--color-champagne-gold);
  margin-bottom: var(--spacing-sm);
}

/* Content Sections */
.content-section {
  margin-bottom: var(--spacing-xl);
}

.content-section h2 {
  color: var(--color-champagne-gold);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}

.content-section h3 {
  color: var(--color-warm-ivory);
  margin-top: var(--spacing-lg);
}

.content-section ul {
  list-style: none;
  margin-bottom: var(--spacing-sm);
}

.content-section li {
  position: relative;
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  color: var(--color-rhodium);
}

.content-section li::before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--color-champagne-gold);
}

/* Page Header */
.page-header {
  text-align: center;
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.page-header__title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.page-header__date {
  color: var(--color-rhodium);
  font-size: 0.875rem;
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer__links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--color-rhodium);
}

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

.footer__copyright {
  font-size: 0.75rem;
  color: var(--color-rhodium);
  opacity: 0.7;
}

/* Responsive (legacy pages) */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 40px;
    --spacing-xxl: 60px;
  }

  h1, .hero__title {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .page-header__title {
    font-size: 2rem;
  }
}

@media (max-width: 430px) {
  :root {
    --spacing-md: 20px;
  }

  h1, .hero__title {
    font-size: 2rem;
  }

  .hero__tagline {
    font-size: 1.125rem;
  }

  .card {
    padding: var(--spacing-md);
  }
}

/* Utility Classes */
.text-gold {
  color: var(--color-champagne-gold);
}

.text-ivory {
  color: var(--color-warm-ivory);
}

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

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.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;
}


/* ================================================================
   LANDING PAGE
   ================================================================ */

/* Landing page body overrides */
.landing-page {
  background-color: var(--color-obsidian);
  background-image:
    radial-gradient(ellipse at 15% 50%, rgba(22, 33, 62, 0.4) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 15%, rgba(201, 169, 110, 0.025) 0%, transparent 40%);
}

.landing-page main {
  padding: 0;
}

/* Gold accent line at viewport top (all pages) */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-champagne-gold);
  z-index: 1001;
}

/* Content pages: account for fixed nav */
.content-page main {
  padding-top: 100px;
}

/* --------------------------------
   Navigation
   -------------------------------- */
.landing-nav {
  position: fixed;
  top: 2px;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: var(--color-obsidian);
  border-bottom: 1px solid var(--color-border);
}

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

.landing-nav__logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-warm-ivory);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.landing-nav__logo:hover {
  opacity: 1;
}

.landing-nav__links {
  display: flex;
  gap: 28px;
}

.landing-nav__links a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-rhodium);
  text-decoration: none;
  letter-spacing: 0.2px;
  transition: color 0.2s var(--ease-standard);
}

.landing-nav__links a:hover {
  color: var(--color-champagne-gold);
  opacity: 1;
}

/* --------------------------------
   Hero
   -------------------------------- */
.landing-hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: var(--spacing-xl);
}

.landing-hero__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.landing-hero__overline {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-champagne-gold);
  margin-bottom: 20px;
  animation: fadeUp 0.8s var(--ease-entrance) 0.1s both;
}

.landing-hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-warm-ivory);
  margin-bottom: 24px;
  animation: fadeUp 0.8s var(--ease-entrance) 0.2s both;
}

.landing-hero__tagline {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-rhodium);
  max-width: 440px;
  margin-bottom: 36px;
  animation: fadeUp 0.8s var(--ease-entrance) 0.35s both;
}

.landing-hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s var(--ease-entrance) 0.5s both;
}

.landing-hero__device {
  display: flex;
  justify-content: center;
  animation: fadeUp 1s var(--ease-entrance) 0.6s both;
}

/* --------------------------------
   Phone Frame
   -------------------------------- */
.phone-frame {
  position: relative;
  width: 272px;
  background: #1C1C1E;
  border-radius: 44px;
  padding: 12px;
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(192, 192, 200, 0.08),
    0 0 120px rgba(201, 169, 110, 0.04);
  transition: transform 0.5s var(--ease-standard);
}

@media (hover: hover) {
  .phone-frame:hover {
    transform: translateY(-4px);
  }
}

.phone-frame__inner {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
  background: var(--color-obsidian);
}

.phone-frame__notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 26px;
  background: #1C1C1E;
  border-radius: 13px;
  z-index: 2;
}

.phone-frame__screen {
  width: 100%;
  height: 100%;
  position: relative;
}

.phone-frame__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.phone-frame__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--color-obsidian) 0%, var(--color-deep-navy) 100%);
}

.phone-frame__placeholder-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-champagne-gold);
  letter-spacing: -0.01em;
}

/* --------------------------------
   Store Buttons
   -------------------------------- */
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid rgba(192, 192, 200, 0.2);
  border-radius: var(--border-radius);
  color: var(--color-warm-ivory);
  text-decoration: none;
  transition: border-color 0.2s var(--ease-standard), background 0.2s var(--ease-standard);
}

.store-btn:hover {
  border-color: var(--color-champagne-gold);
  background: rgba(201, 169, 110, 0.04);
  opacity: 1;
}

.store-btn__icon {
  flex-shrink: 0;
}

.store-btn__text {
  text-align: left;
}

.store-btn__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.625rem;
  letter-spacing: 0.3px;
  color: var(--color-rhodium);
  line-height: 1.2;
  margin-bottom: 1px;
}

.store-btn__platform {
  display: block;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-warm-ivory);
}

/* --------------------------------
   Features
   -------------------------------- */
.landing-features {
  padding: var(--spacing-xxl) 0;
  border-top: 1px solid var(--color-border);
}

.landing-features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

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

.landing-feature {
  padding-top: 24px;
}

.landing-feature__accent {
  width: 32px;
  height: 2px;
  background: var(--color-champagne-gold);
  margin-bottom: 24px;
}

.landing-feature__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-warm-ivory);
  margin-bottom: 12px;
  line-height: 1.3;
}

.landing-feature__desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-rhodium);
  margin-bottom: 0;
}

/* Stagger feature card reveals */
.landing-features__grid .landing-feature:nth-child(2) { transition-delay: 0.15s; }
.landing-features__grid .landing-feature:nth-child(3) { transition-delay: 0.3s; }
.landing-features__grid .landing-feature:nth-child(4) { transition-delay: 0.45s; }

/* --------------------------------
   CTA / Closing
   -------------------------------- */
.landing-cta {
  padding: var(--spacing-xxl) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.landing-cta__content {
  max-width: 600px;
  margin: 0 auto;
}

.landing-cta__overline {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-champagne-gold);
  margin-bottom: 20px;
}

.landing-cta__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-warm-ivory);
  margin-bottom: 20px;
}

.landing-cta__desc {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-rhodium);
  margin-bottom: 0;
}

/* --------------------------------
   Animations
   -------------------------------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.8s var(--ease-entrance),
    transform 0.8s var(--ease-entrance);
}

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

/* --------------------------------
   Reduced Motion
   -------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .landing-hero__overline,
  .landing-hero__title,
  .landing-hero__tagline,
  .landing-hero__actions,
  .landing-hero__device {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --------------------------------
   Landing Responsive
   -------------------------------- */
@media (max-width: 1024px) {
  .landing-features__grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .landing-hero {
    min-height: auto;
    padding-top: 120px;
    padding-bottom: var(--spacing-xxl);
  }

  .landing-hero__layout {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .landing-hero__tagline {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }

  .landing-hero__actions {
    justify-content: center;
  }

  .landing-hero__device {
    order: -1;
  }

  .phone-frame {
    width: 220px;
  }

  .landing-features__grid,
  .landing-features__grid--4 {
    grid-template-columns: 1fr;
    gap: 48px;
    max-width: 480px;
    margin: 0 auto;
  }

  .landing-cta__title br {
    display: none;
  }
}

@media (max-width: 480px) {
  .landing-nav__links {
    gap: 16px;
  }

  .landing-hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .store-btn {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }

  .phone-frame {
    width: 200px;
  }
}