/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Base Colors */
  --bg-dark: #0a0a0a;
  --bg-darker: #050505;
  --bg-card: #141414;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --bubble-user: #1e1e1e;
  --bubble-assistant: #171717;
  --border: #2a2a2a;
  --success: #10b981;
  --error: #ef4444;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Animations */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 500ms ease-out;
}

/* Tool-Specific Theme Colors */
[data-theme="scout"] {
  --accent: #10b981;
  --accent-hover: #059669;
}

[data-theme="odigos"] {
  --accent: #8b5cf6;
  --accent-hover: #7c3aed;
}

[data-theme="sayit"] {
  --accent: #f59e0b;
  --accent-hover: #d97706;
}

[data-theme="libris"] {
  --accent: #3b82f6;
  --accent-hover: #2563eb;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

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

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

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

/* ========================================
   Container & Layout
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========================================
   Header
   ======================================== */

.header {
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.social-links a {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  border-radius: 6px;
}

.social-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.social-links a span {
  display: none;
}

.social-links svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  min-height: calc(100vh - 64px - 20px);
  display: flex;
  align-items: center;
  text-align: center;
}

.hero .container {
  width: 100%;
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: var(--text-xl);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

.hero-subtitle strong {
  color: var(--text-primary);
}

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

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
  min-height: 44px;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-lg);
  min-height: 56px;
}

/* ========================================
   Section Styles
   ======================================== */

.apps-section,
.waitlist-section,
.chat-section {
  min-height: calc(100vh - 20px);
  display: flex;
  align-items: center;
  padding: var(--spacing-3xl) 0;
}

/* Alternating backgrounds */
.apps-section {
  background: var(--bg-dark);
}

.waitlist-section {
  background: var(--bg-darker);
}

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

.apps-section .container,
.waitlist-section .container,
.chat-section .container {
  width: 100%;
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: var(--text-lg);
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ========================================
   Apps Grid
   ======================================== */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.app-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.app-icon {
  display: none;
}

.app-name {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.app-tagline {
  font-size: var(--text-sm);
  color: var(--accent);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.app-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.app-meta {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.app-status,
.app-price {
  font-size: var(--text-xs);
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.app-status {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.app-status.launching {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-color: var(--success);
}

.app-price {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.app-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.app-link {
  display: block;
  text-align: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: 6px;
  transition: all var(--transition-fast);
  background: var(--accent);
  color: white;
}

.app-link:hover {
  background: var(--accent-hover);
}

.app-link.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.app-link.secondary:hover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

/* ========================================
   Waitlist Form
   ======================================== */

.waitlist-content {
  max-width: 600px;
  margin: 0 auto;
}

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group select {
  cursor: pointer;
}

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

.form-message {
  padding: var(--spacing-md);
  border-radius: 8px;
  text-align: center;
  font-size: var(--text-sm);
}

.form-message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
}

.form-message.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  color: var(--error);
}

/* ========================================
   Chat Section (Existing + Updates)
   ======================================== */

.conversation-container {
  max-width: 900px;
  margin: 0 auto;
  transition: all var(--transition-slow);
}

.conversation {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-3xl);
}

.message {
  display: flex;
  flex-direction: column;
  opacity: 0;
  animation: fadeInSlide var(--transition-normal) forwards;
}

.message.user {
  align-items: flex-end;
}

.message.assistant {
  align-items: flex-start;
}

.bubble {
  max-width: 90%;
  background: var(--bubble-assistant);
  border-radius: 16px;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 3px solid transparent;
  transition: all var(--transition-normal);
}

.message.assistant .bubble {
  border-left-color: var(--accent);
}

.message.user .bubble {
  background: var(--bubble-user);
  border-left: none;
  border-right: 3px solid var(--accent);
}

.bubble-content {
  font-size: var(--text-base);
  line-height: 1.6;
}

.bubble-content p {
  margin-bottom: var(--spacing-sm);
}

.bubble-content p:last-child {
  margin-bottom: 0;
}

.option-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 24px;
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.pill:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent);
  transform: scale(1.02);
}

.pill:active {
  transform: scale(0.98);
}

.pill img {
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.cta-button {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--accent);
  color: white;
  border-radius: 8px;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  min-height: 44px;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.cta-button:active {
  transform: translateY(0);
}

.cta-button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.cta-button.secondary:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.input-container {
  padding: var(--spacing-lg) 0;
}

.input-form {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.input-field {
  flex: 1;
  height: 56px;
  padding: 0 var(--spacing-lg);
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 28px;
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.input-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.send-button {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.send-button:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.send-button:active {
  transform: scale(0.95);
}

.send-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.send-button:disabled:hover {
  transform: none;
  box-shadow: none;
}

.rate-limit-warning {
  margin: var(--spacing-sm) 0 0;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  color: #fca5a5;
  font-size: var(--text-sm);
  text-align: center;
}

.typing-indicator {
  display: flex;
  gap: 6px;
  padding: var(--spacing-sm) 0;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  background: var(--bg-darker);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.footer-links h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.footer .social-links {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.footer .social-links a {
  padding: var(--spacing-xs) 0;
}

.footer .social-links a span {
  display: inline;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.7;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

/* ========================================
   Utility Classes
   ======================================== */

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }

  .section-title {
    font-size: var(--text-2xl);
  }

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

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer .social-links {
    flex-direction: row;
  }

  .footer .social-links a span {
    display: none;
  }

  .social-links a span {
    display: none;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Prevent zoom on input focus (iOS) */
@media (max-width: 767px) {
  .input-field,
  .form-group input,
  .form-group select {
    font-size: 16px;
  }
}