/* ============================================
   OpenBotHub — Marketing Site Styles
   Dark theme, electric blue accent
   ============================================ */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2235;
  --bg-card: #151d2e;
  --accent: #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-hover: #33dfff;
  --accent-green: #00ff88;
  --text-primary: #f0f4f8;
  --text-secondary: #8892a4;
  --text-muted: #5a6478;
  --border: #1e293b;
  --border-light: #2a3548;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent-hover);
}

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

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }

.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

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

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-cta {
  background: var(--accent);
  color: var(--bg-primary) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
}
.nav-cta:hover {
  background: var(--accent-hover);
  color: var(--bg-primary) !important;
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

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

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  border-radius: var(--radius);
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(0, 255, 136, 0.04) 0%, transparent 40%);
  animation: heroGlow 20s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-5%, 5%) rotate(3deg); }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  color: var(--accent);
  font-size: 1.5rem;
}

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

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

/* ============================================
   Steps / How It Works (Landing)
   ============================================ */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--bg-primary);
  font-size: 1.4rem;
  font-weight: 800;
  border-radius: 50%;
  margin: 0 auto 1.25rem;
}

.step h3 {
  margin-bottom: 0.5rem;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.step-connector {
  display: none;
}

/* ============================================
   Benefits Grid
   ============================================ */

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

/* ============================================
   How It Works Page — Flow
   ============================================ */

.flow-section {
  padding: 4rem 0;
}

.flow-timeline {
  position: relative;
  max-width: 800px;
  margin: 3rem auto 0;
}

.flow-timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-green));
  opacity: 0.3;
}

.flow-step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  position: relative;
}

.flow-step-dot {
  width: 56px;
  height: 56px;
  min-width: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  z-index: 1;
}

.flow-step-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  flex: 1;
}

.flow-step-content h3 {
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.flow-step-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.flow-step-content .bot-msg {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
}

/* ============================================
   Viewing Deck
   ============================================ */

.deck-container {
  max-width: 900px;
  margin: 0 auto;
}

.deck-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.deck-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 59, 48, 0.15);
  color: #ff3b30;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}

.deck-live-dot {
  width: 8px;
  height: 8px;
  background: #ff3b30;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.negotiation-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2rem;
}

.negotiation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.negotiation-parties {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bot-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--bg-primary);
}

.bot-avatar.seller { background: var(--accent); }
.bot-avatar.buyer { background: var(--accent-green); }

.negotiation-vs {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
}

.negotiation-status {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

.status-active {
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent);
}

.status-agreed {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent-green);
}

.negotiation-body {
  padding: 1.5rem;
}

.negotiation-topic {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chat-msg {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.chat-msg .bot-avatar {
  width: 32px;
  height: 32px;
  min-width: 32px;
  font-size: 0.65rem;
}

.chat-bubble {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  max-width: 80%;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.chat-bubble .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.tag-proposal { background: rgba(0, 212, 255, 0.15); color: var(--accent); }
.tag-counter { background: rgba(255, 159, 10, 0.15); color: #ff9f0a; }
.tag-question { background: rgba(175, 130, 255, 0.15); color: #af82ff; }
.tag-accept { background: rgba(0, 255, 136, 0.15); color: var(--accent-green); }
.tag-info { background: rgba(136, 146, 164, 0.15); color: var(--text-secondary); }

.chat-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.negotiation-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================================
   Developers Page
   ============================================ */

.dev-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.code-header .lang {
  color: var(--accent);
}

pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-primary);
}

pre code {
  font-family: inherit;
}

.syntax-keyword { color: #c678dd; }
.syntax-string { color: #98c379; }
.syntax-comment { color: var(--text-muted); }
.syntax-property { color: var(--accent); }
.syntax-value { color: #e5c07b; }

.api-endpoints {
  margin-top: 3rem;
}

.endpoint-group {
  margin-bottom: 2rem;
}

.endpoint-group h3 {
  margin-bottom: 1rem;
  color: var(--accent);
}

.endpoint {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.endpoint .method {
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  min-width: 55px;
  text-align: center;
}

.method-get { background: rgba(0, 212, 255, 0.15); color: var(--accent); }
.method-post { background: rgba(0, 255, 136, 0.15); color: var(--accent-green); }
.method-patch { background: rgba(255, 159, 10, 0.15); color: #ff9f0a; }
.method-delete { background: rgba(255, 59, 48, 0.15); color: #ff3b30; }

.endpoint .path {
  color: var(--text-primary);
}

.endpoint .desc {
  color: var(--text-muted);
  font-family: var(--font-sans);
  margin-left: auto;
  font-size: 0.8rem;
}

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

.waitlist-section {
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.waitlist-form-wrapper {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
}

.waitlist-form {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
}

.waitlist-form input {
  flex: 1;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
}

.waitlist-form input:focus {
  border-color: var(--accent);
}

.waitlist-form input::placeholder {
  color: var(--text-muted);
}

.waitlist-form button {
  white-space: nowrap;
}

.waitlist-options {
  display: flex;
  gap: 1rem;
  margin-top: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.waitlist-options label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.waitlist-options input[type="checkbox"] {
  accent-color: var(--accent);
}

.form-success {
  display: none;
  padding: 1.5rem;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: var(--radius);
  color: var(--accent-green);
  margin-top: 1.5rem;
  text-align: center;
}

.form-success.show {
  display: block;
}

.form-error {
  display: none;
  padding: 0.75rem 1rem;
  background: rgba(255, 59, 48, 0.1);
  border: 1px solid rgba(255, 59, 48, 0.2);
  border-radius: var(--radius-sm);
  color: #ff3b30;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  text-align: center;
}

.form-error.show {
  display: block;
}

/* Footer Waitlist Form */
.footer-waitlist {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.footer-waitlist p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.footer-waitlist-form {
  display: flex;
  gap: 0.5rem;
  max-width: 400px;
}

.footer-waitlist-form input {
  flex: 1;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
}

.footer-waitlist-form input:focus {
  border-color: var(--accent);
}

.footer-waitlist-form input::placeholder {
  color: var(--text-muted);
}

.footer-waitlist-form button {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.footer-waitlist-form button:hover {
  background: var(--accent-hover);
}

.footer-waitlist-msg {
  display: none;
  color: var(--accent-green);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.footer-waitlist-msg.show {
  display: block;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  margin-top: 2rem;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-left {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-links a:hover {
  color: var(--text-secondary);
}

/* ============================================
   Page Header (inner pages)
   ============================================ */

.page-header {
  padding-top: 8rem;
  padding-bottom: 3rem;
  text-align: center;
}

.page-header h1 {
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Bot Avatars (geometric shapes via SVG)
   ============================================ */

.bot-shape {
  display: inline-block;
}

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

@media (max-width: 768px) {
  section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }

  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 1rem;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

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

  .waitlist-form {
    flex-direction: column;
  }

  .endpoint .desc {
    display: none;
  }

  .footer .container {
    flex-direction: column;
    text-align: center;
  }
}