@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --bg: #09090b;
  --fg: #fafafa;
  --zinc-50: #fafafa;
  --zinc-100: #f4f4f5;
  --zinc-200: #e4e4e7;
  --zinc-300: #d4d4d8;
  --zinc-400: #a1a1aa;
  --zinc-500: #71717a;
  --zinc-600: #52525b;
  --zinc-700: #3f3f46;
  --zinc-800: #27272a;
  --zinc-900: #18181b;
  --zinc-950: #09090b;

  --indigo-400: #818cf8;
  --indigo-500: #6366f1;
  --indigo-600: #4f46e5;

  --cyan-400: #22d3ee;
  --emerald-400: #34d399;

  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;

  --nav-height: 80px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
}

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

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

/* Layout Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--indigo-500), var(--cyan-400));
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: none;
  gap: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--zinc-400);
}

.nav-links a:hover {
  color: white;
}

.nav-actions {
  display: none;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 768px) {
  .nav-links, .nav-actions {
    display: flex;
  }
}

/* Hero Section */
.hero {
  position: relative;
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 5rem;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: rgba(99, 102, 241, 0.2);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  pointer-events: none;
  animation: pulseSlow 4s infinite;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: var(--indigo-400);
  margin-bottom: 2rem;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--indigo-500);
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.gradient-text {
  background: linear-gradient(to right, var(--indigo-400), var(--cyan-400), var(--emerald-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--zinc-400);
  max-width: 42rem;
  margin: 0 auto 2.5rem;
}

.btn-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
}

@media (min-width: 640px) {
  .btn-group {
    flex-direction: row;
  }
}

.btn {
  padding: 1rem 2rem;
  border-radius: 9999px;
  font-weight: 500;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background: white;
  color: black;
}

.btn-primary:hover {
  background: var(--zinc-200);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--zinc-400);
  max-width: 42rem;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Channel Cards */
.card {
  padding: 2rem;
  border-radius: 1.5rem;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.05), transparent);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--zinc-900);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--zinc-400);
  font-size: 0.875rem;
}

/* Feature List */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
}

.feature-icon-wrapper {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--indigo-400);
}

.feature-text h4 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.feature-text p {
  color: var(--zinc-400);
}

/* Mock UI */
.mock-ui {
  background: rgba(24, 24, 27, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 2.5rem;
  padding: 2rem;
  backdrop-filter: blur(20px);
}

.chat-bubble {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.chat-bubble.reverse {
  flex-direction: row-reverse;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--zinc-800);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.avatar.ai {
  background: var(--indigo-500);
}

.bubble-content {
  padding: 1rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  max-width: 80%;
}

.bubble-user {
  background: rgba(39, 39, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-top-left-radius: 0;
}

.bubble-ai {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-top-right-radius: 0;
  color: #e0e7ff;
}

/* CTA Section */
.cta {
  background: var(--indigo-600);
  padding: 6rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-content {
  position: relative;
  z-index: 10;
}

.cta h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: white;
  margin-bottom: 1.5rem;
}

.cta p {
  color: #e0e7ff;
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
}

/* Footer */
.footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
  }
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--zinc-500);
}

.footer-links a:hover {
  color: white;
}

.copyright {
  font-size: 0.875rem;
  color: var(--zinc-600);
}

/* Mobile Menu Hack */
#menu-toggle {
  display: none;
}

.menu-btn {
  display: block;
  cursor: pointer;
  color: var(--zinc-400);
}

@media (min-width: 768px) {
  .menu-btn {
    display: none;
  }
}

.mobile-menu {
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  padding: 0 1.5rem;
  border-bottom: 1px solid transparent;
}

#menu-toggle:checked ~ .mobile-menu {
  max-height: 500px;
  padding: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.icon-close { display: none; }
#menu-toggle:checked ~ label .icon-menu { display: none; }
#menu-toggle:checked ~ label .icon-close { display: block; }

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

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.5; }
}

@keyframes pulseSlow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--zinc-800);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--zinc-700);
}