@import url('https://fonts.googleapis.com/css2?family=Geist:wght@200..800&family=Lora:ital,wght@0,400..600;1,400&display=swap');

/* === VARIABLES & DESIGN TOKENS === */
:root {
  --bg: oklch(0.14 0.010 130);
  --surface-0: oklch(0.16 0.012 130);
  --surface-1: oklch(0.20 0.013 130);
  --surface-2: oklch(0.24 0.014 130);
  --surface-3: oklch(0.28 0.015 130);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --accent: oklch(0.86 0.21 128); /* Neon lime-green highlighter */
  --accent-hover: oklch(0.92 0.21 128);
  --accent-press: oklch(0.78 0.20 128);
  --accent-soft: rgba(178, 255, 89, 0.12);
  --on-accent: oklch(0.18 0.03 128);

  --text-primary: oklch(0.96 0.008 130);
  --text-secondary: oklch(0.76 0.010 130);
  --text-tertiary: oklch(0.55 0.012 130);

  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  --transition-fast: 150ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-normal: 280ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-slow: 450ms cubic-bezier(0.22, 1, 0.36, 1);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --max-width: 1200px;
}

/* === BASE RESET === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* === CUSTOM SCROLLBAR === */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border-radius: 4px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--surface-3);
}

/* === BACKGROUND GLOW ORBS === */
.ambient-glow-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: -1;
}

.ambient-glow {
  position: absolute;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 70%);
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}
.glow-1 { top: -10vw; right: -10vw; }
.glow-2 { top: 60vh; left: -20vw; background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%); }
.glow-3 { bottom: -10vw; right: -10vw; }

/* === GLASSMORPHISM MIXIN UTILITY === */
.glass-panel {
  background: rgba(32, 36, 33, 0.45);
  backdrop-filter: blur(16px) saturate(185%);
  -webkit-backdrop-filter: blur(16px) saturate(185%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.glass-panel:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

/* === LAYOUT CONTAINERS === */
header, section, footer {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding-top: 100px;
  padding-bottom: 40px;
}

.section-tag {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 18px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin-bottom: 48px;
}

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  z-index: 100;
  background: rgba(20, 24, 21, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 32px;
  height: 32px;
  transition: transform var(--transition-slow);
}
.brand:hover .brand-logo {
  transform: rotate(360deg);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-link:hover {
  color: var(--accent);
}

.btn-nav-github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 600;
}
.btn-nav-github:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-primary);
}

/* === HERO SECTION === */
.hero {
  padding-top: 150px;
  padding-bottom: 80px;
  display: grid;
  grid-template-columns: 0.9fr 1.3fr;
  align-items: center;
  gap: 48px;
  max-width: 1400px; /* Wider container for the hero to allow a larger app mockup */
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.tamil-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 50px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-dot 1.5s infinite alternate;
}

@keyframes pulse-dot {
  0% {
    transform: scale(0.8);
    opacity: 0.5;
    box-shadow: 0 0 4px var(--accent);
  }
  100% {
    transform: scale(1.2);
    opacity: 1;
    box-shadow: 0 0 12px var(--accent);
  }
}

.tamil-word {
  color: var(--accent);
  font-weight: 700;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3.75rem;
  line-height: 1.15;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 520px;
}

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

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(178, 255, 89, 0.25);
  transition: var(--transition-fast);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(178, 255, 89, 0.35);
}
.btn-primary:active {
  background: var(--accent-press);
  transform: translateY(0);
}

.btn-secondary {
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  background: transparent;
  transition: var(--transition-fast);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-primary);
}

/* Hero Showcase Frame */
.hero-showcase {
  position: relative;
  width: 100%;
}

.floating-widget {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: rgba(26, 32, 28, 0.8);
  border: 1px solid var(--border-strong);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55);
  font-family: var(--font-sans);
  z-index: 5;
  animation: float-widget 5s ease-in-out infinite alternate;
}

.widget-privacy {
  top: 15px;
  right: -25px;
  animation-delay: 0s;
}

.widget-ai {
  bottom: 10px;
  left: -25px;
  animation-delay: 2.5s;
}

.widget-icon {
  font-size: 1.25rem;
}

.widget-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.widget-desc {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  line-height: 1.2;
}

@keyframes float-widget {
  0% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-8px);
  }
}

.chrome-mockup {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  background: #1e2220;
}

.chrome-bar {
  height: 38px;
  background: #151816;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
}

.chrome-dots {
  display: flex;
  gap: 6px;
}

.chrome-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-close { background: #ff5f56; }
.dot-minimize { background: #ffbd2e; }
.dot-maximize { background: #27c93f; }

.chrome-title {
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-family: var(--font-sans);
}

.chrome-content img {
  width: 100%;
  height: auto;
  display: block;
}

/* === FEATURES GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border: 1px solid rgba(178, 255, 89, 0.25);
  transition: transform var(--transition-normal), background var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover .feature-icon-wrapper {
  transform: translateY(-2px);
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-soft);
}

.feature-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.feature-card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* === GALLERY SECTION (Uniform layout) === */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.gallery-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
}

.gallery-image-container {
  width: 100%;
  /* Fix aspect-ratio to keep layout completely even regardless of image size */
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
  background: var(--surface-1);
}

.gallery-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Ensures cropping is clean and fills container */
  transition: transform var(--transition-slow);
}

.gallery-card:hover .gallery-image-container img {
  transform: scale(1.04);
}

.gallery-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20, 24, 21, 0.4);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
  z-index: 2;
}
.gallery-card:hover .gallery-hover-overlay {
  opacity: 1;
}

.zoom-icon-wrapper {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
  transform: scale(0.8);
  transition: transform var(--transition-normal);
}
.gallery-card:hover .zoom-icon-wrapper {
  transform: scale(1);
}

.gallery-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.gallery-card-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.gallery-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
}

.gallery-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* === PARTNERS / SITES SECTION === */
.partners-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 60px 40px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.partners-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 32px;
}

.partners-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  width: 100%;
}

.partner-card {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  transition: all var(--transition-normal);
}
.partner-card:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-4px);
}

.partner-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.partner-desc {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  text-align: center;
}

/* === FAQ SECTION === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.02);
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition-fast);
}
.faq-question:hover {
  background: rgba(255, 255, 255, 0.04);
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  transition: transform var(--transition-normal);
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--accent);
}
.faq-item.active {
  border-color: var(--border-strong);
}

.faq-answer-container {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out;
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.02);
}

/* === LIGHTBOX MODAL === */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 12, 11, 0.85);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: 1px solid var(--border);
  transition: var(--transition-fast);
}
.modal-close:hover {
  background: var(--accent);
  color: var(--on-accent);
}

.modal-content {
  max-width: 90vw;
  max-height: 80vh;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}
.modal.active .modal-content {
  transform: scale(1);
}

.modal-img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-strong);
}

.modal-caption {
  text-align: center;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-family: var(--font-serif);
}

/* === FOOTER === */
footer {
  border-top: 1px solid var(--border);
  padding-top: 60px;
  padding-bottom: 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 80px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* === RESPONSIVE STYLING === */
@media (max-width: 992px) {
  .floating-widget {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 120px;
    gap: 32px;
  }
  .hero-text {
    align-items: center;
  }
  .hero-title {
    font-size: 3rem;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .section-title {
    font-size: 2.2rem;
  }
}

@media (max-width: 768px) {
  .navbar-container {
    position: relative;
  }
  .menu-toggle {
    display: block;
    z-index: 101;
  }
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    height: calc(100vh - 70px);
    background: rgba(20, 24, 21, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 40px;
    gap: 24px;
    transform: translateY(-120%);
    transition: transform var(--transition-normal);
    z-index: 99;
  }
  .nav-menu.active {
    transform: translateY(0);
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 30%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}