/* ======================================================
   TEM TEM ON BASE — High-Velocity Surrealism
   ====================================================== */

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

/* --- Design Tokens --- */
:root {
  /* Colors - Tem Tem Original Theme */
  --primary: #bb020c;
  --primary-container: #e02923;
  --surface: #fdf9f0;
  --surface-container-low: #f7f3ea;
  --surface-container: #f1ede4;
  --surface-container-high: #ebe7de;
  --surface-container-highest: #e5e2d9;
  --surface-variant: #f0e0dd;
  --on-background: #1c1c16;
  --on-surface: #1c1c16;
  --on-surface-variant: #524341;
  --on-primary: #ffffff;
  --outline: #916f6a;
  --outline-variant: #e6bdb8;
  --secondary-container: #f5ddd9;
  --white: #ffffff;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-title: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-label: 'Inter', sans-serif;

  /* Sizes */
  --display-lg: 3.5rem;
  --display-md: 2.8rem;
  --display-sm: 2.25rem;
  --headline-lg: 2rem;
  --headline-md: 1.75rem;
  --title-lg: 1.375rem;
  --title-md: 1.125rem;
  --body-lg: 1rem;
  --body-md: 0.875rem;
  --label-lg: 0.875rem;
  --label-md: 0.75rem;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-default: 4px;
  --radius-full: 9999px;

  /* Ambient Shadow */
  --shadow-ambient: 0 20px 60px rgba(28, 28, 22, 0.06);
  --shadow-hover: 0 24px 48px rgba(28, 28, 22, 0.10);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

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

ul { list-style: none; }

/* --- Utility --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- NAVIGATION --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(253, 249, 240, 0.90);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background 0.3s ease, box-shadow 0.3s ease;
  border-bottom: 1px solid transparent;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-label);
  font-size: var(--label-lg);
  font-weight: 600;
  color: var(--on-background);
  position: relative;
  transition: color 0.25s ease;
}

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

/* Mobile menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--on-background);
  transition: all 0.3s ease;
  display: block;
}

/* --- HERO SECTION --- */
.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  text-align: left;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--display-lg);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-style: italic;
  color: var(--on-background);
  text-transform: uppercase;
  margin-bottom: 24px;
}

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

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--body-lg);
  color: var(--on-surface-variant);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 440px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  font-family: var(--font-label);
  font-size: var(--label-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-container), var(--primary));
  box-shadow: 0 8px 24px rgba(187, 2, 12, 0.25);
  transform: translateY(-2px);
}

.btn-secondary {
  font-family: var(--font-label);
  font-size: var(--label-lg);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 28px;
  background: var(--on-background);
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: #2d2d24;
  box-shadow: 0 8px 24px rgba(28, 28, 22, 0.20);
  transform: translateY(-2px);
}

.hero-mascot {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-mascot img {
  max-width: 420px;
  width: 100%;
  filter: drop-shadow(0 30px 60px rgba(28, 28, 22, 0.12));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

/* --- ABOUT SECTION --- */
.about-section {
  padding: 100px 0;
  background: var(--surface);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--display-sm);
  font-weight: 700;
  color: var(--on-background);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--on-surface-variant);
  font-size: var(--body-lg);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--surface-container-low);
  padding: 40px 32px;
  border-radius: var(--radius-default);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--surface-container-high);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--secondary-container);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.feature-title {
  font-family: var(--font-title);
  font-size: var(--title-md);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--on-background);
}

.feature-desc {
  color: var(--on-surface-variant);
  font-size: var(--body-md);
  line-height: 1.6;
}

/* --- ROADMAP SECTION --- */
.roadmap-section {
  padding: 100px 0;
  background: var(--surface-container-low);
}

.roadmap-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.roadmap-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 24px;
  width: 2px;
  background: var(--surface-container-highest);
}

.roadmap-item {
  position: relative;
  padding-left: 72px;
  margin-bottom: 48px;
}

.roadmap-item:last-child {
  margin-bottom: 0;
}

.roadmap-marker {
  position: absolute;
  top: 0;
  left: 16px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 4px solid var(--surface-container-low);
  box-shadow: 0 0 0 2px var(--primary);
}

.roadmap-content {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius-default);
  border: 1px solid var(--surface-container-high);
  box-shadow: var(--shadow-ambient);
}

.roadmap-phase {
  font-family: var(--font-label);
  font-size: var(--label-md);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 8px;
  display: block;
}

.roadmap-title {
  font-family: var(--font-title);
  font-size: var(--title-lg);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--on-background);
  margin-bottom: 16px;
}

.roadmap-list {
  list-style: none;
}

.roadmap-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  color: var(--on-surface-variant);
}

.roadmap-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* --- FOOTER --- */
.footer {
  padding: 60px 0 24px;
  background: var(--surface);
  border-top: 1px solid var(--surface-container-high);
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.footer-links a {
  font-family: var(--font-label);
  font-size: var(--label-md);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--on-surface-variant);
  transition: color 0.25s ease;
}

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

.footer-copy {
  font-family: var(--font-label);
  font-size: var(--label-sm);
  color: var(--on-surface-variant);
  margin-top: 24px;
}

/* --- SCROLL ANIMATIONS --- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: var(--display-md);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    right: 24px;
    width: 240px;
    background: var(--surface-container-highest);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-radius: var(--radius-default);
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--surface-container-highest);
    z-index: 1000;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    width: 100%;
    text-align: left;
  }

  .nav-toggle {
    display: flex;
  }

  .hero .container {
    flex-direction: column;
    text-align: left;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero-mascot {
    order: -1;
  }

  .hero-mascot img {
    max-width: 260px;
  }

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

  .roadmap-timeline::before {
    left: 15px;
  }
  
  .roadmap-marker {
    left: 7px;
  }
  
  .roadmap-item {
    padding-left: 48px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }
}