:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #21262d;
  --border-color: #30363d;
  
  --accent-cyan: #008fd0;
  --accent-blue: #008ecf;
  --accent-slate: #373e4a;
  --accent-glow: rgba(0, 143, 208, 0.25);
  
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;

  --success: #2ea44f;
  --warning: #d29922;
  --danger: #f85149;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  padding-bottom: 70px;
}

/* Background Effects */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -2;
  pointer-events: none;
}

.bg-glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 143, 208, 0.18) 0%, rgba(0, 0, 0, 0) 70%);
  top: -100px;
  left: 20%;
}

.bg-glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(55, 62, 74, 0.25) 0%, rgba(0, 0, 0, 0) 70%);
  top: 800px;
  right: 10%;
}

.bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.15;
  z-index: -1;
  pointer-events: none;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 0 12px var(--accent-glow);
}

.badge-version {
  background: var(--bg-card);
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  padding: 0.1rem 0.45rem;
  border-radius: 20px;
  font-size: 0.72rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.nav-links a i {
  font-size: 0.82rem;
  color: var(--accent-cyan);
}

.nav-actions {
  flex-shrink: 0;
}

/* Tech Highlights Section */
.tech-highlights {
  padding: 2.5rem 2rem;
  background: rgba(0, 143, 208, 0.05);
  border-top: 1px solid rgba(0, 143, 208, 0.2);
  border-bottom: 1px solid rgba(0, 143, 208, 0.2);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.highlight-item {
  padding: 1rem;
}

.highlight-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.highlight-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Architecture Section */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.arch-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.75rem;
  transition: all 0.3s ease;
}

.arch-box:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
}

.arch-header {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.arch-header i {
  color: var(--accent-cyan);
}

.arch-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.arch-box ul li {
  position: relative;
  padding-left: 1.2rem;
}

.arch-box ul li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

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

.nav-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--accent-cyan);
  color: #fff;
}

.lang-btn .flag {
  font-size: 0.9rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  font-size: 0.95rem;
  border: none;
}

.btn-sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.8rem 1.75rem;
  font-size: 1.05rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 143, 208, 0.4);
}

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

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-primary);
}

/* Hero */
.hero {
  padding: 5rem 2rem 4rem 2rem;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.ai-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 143, 208, 0.1);
  border: 1px solid rgba(0, 143, 208, 0.3);
  color: var(--accent-cyan);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.gradient-text {
  background: linear-gradient(135deg, #33a3ff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.hero-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

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

/* Terminal Card */
.terminal-card {
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  font-family: var(--font-mono);
}

.terminal-header {
  background: var(--bg-secondary);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 0.4rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-title {
  margin-left: auto;
  margin-right: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 1.25rem;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.log-line {
  display: flex;
  gap: 0.6rem;
}

.log-time { color: var(--text-muted); }
.log-level { font-weight: 600; padding: 0 0.3rem; border-radius: 3px; }
.log-level.info { color: #58a6ff; }
.log-level.success { color: var(--success); }
.log-level.call { color: #d2a8ff; }
.log-level.ivr { color: #f0883e; }
.log-level.dtmf { color: #ff7b72; }

.log-highlight { color: var(--accent-cyan); }
.log-accent { color: #79c0ff; }

.log-prompt {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  display: flex;
  gap: 0.5rem;
}

.prompt-symbol { color: var(--success); font-weight: bold; }

/* Sections */
.section {
  padding: 5rem 2rem;
}

.section-dark {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 25px rgba(0, 143, 208, 0.15);
}

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: rgba(0, 143, 208, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

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

/* Dashboard Mockup */
.dashboard-mockup {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: grid;
  grid-template-columns: 220px 1fr;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.mockup-sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 1.25rem;
}

.mockup-logo {
  font-weight: bold;
  color: var(--accent-cyan);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mockup-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.menu-item {
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.menu-item.active {
  background: rgba(0, 143, 208, 0.15);
  color: var(--accent-cyan);
  font-weight: 600;
}

.mockup-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mockup-topbar {
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.4rem;
}

.status-indicator.online { background: var(--success); box-shadow: 0 0 8px var(--success); }

.mockup-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.mock-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
}

.mock-card h4 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.mock-val {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-primary);
}

.mock-sub {
  font-size: 0.75rem;
  color: var(--accent-cyan);
}

.mockup-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
}

.mockup-panel h4 {
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

.mock-table {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.mock-tr {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr 1fr 1fr;
  align-items: center;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.mock-th {
  font-weight: bold;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
}

.status-tag {
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: bold;
  width: fit-content;
}

.status-tag.active { background: rgba(46, 164, 79, 0.2); color: var(--success); }
.status-tag.ivr { background: rgba(240, 136, 62, 0.2); color: #f0883e; }

.mock-btn {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  width: fit-content;
}

.mock-btn.danger { background: rgba(248, 81, 73, 0.2); color: var(--danger); }
.mock-btn.warning { background: rgba(210, 153, 34, 0.2); color: var(--warning); }

/* Code Tabs */
.code-tabs {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.tab-buttons {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 0.85rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--accent-cyan);
  border-bottom: 2px solid var(--accent-cyan);
}

.tab-contents {
  padding: 1.5rem;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

pre {
  background: #0d1117;
  padding: 1.25rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

/* Docs Grid */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.doc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.75rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.doc-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
}

.doc-icon {
  font-size: 1.75rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.doc-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

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

/* Footer */
.footer {
  background: #080b0f;
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-left .brand {
  margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1100px) {
  .nav-links {
    gap: 0.3rem;
  }
  
  .nav-links a {
    font-size: 0.82rem;
    padding: 0.3rem 0.45rem;
  }
  
  .nav-links a i {
    display: none; /* Hide link icons on medium viewports to give text maximum breathing room */
  }
}

@media (max-width: 820px) {
  .nav-container {
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0.65rem 1rem;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 0.35rem 0.5rem;
    padding-top: 0.5rem;
    margin-top: 0.2rem;
    border-top: 1px solid var(--border-color);
  }
}

@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }

  .dashboard-mockup {
    grid-template-columns: 1fr;
  }

  .mockup-sidebar {
    display: none;
  }

  .mockup-cards {
    grid-template-columns: 1fr;
  }
}

/* Fixed Bottom Footer Bar */
.fixed-footer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
  z-index: 999;
  padding: 0.65rem 0;
}

.fixed-footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.fixed-footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.fixed-footer-brand {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.fixed-footer-brand i {
  color: var(--accent-cyan);
}

.fixed-footer-desc {
  border-left: 1px solid var(--border-color);
  padding-left: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fixed-footer-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

@media (max-width: 900px) {
  body {
    padding-bottom: 110px;
  }

  .fixed-footer-container {
    flex-direction: column;
    justify-content: center;
    padding: 0.55rem 1rem;
    gap: 0.5rem;
  }

  .fixed-footer-desc {
    display: none;
  }
}

/* Disclaimer Card */
.disclaimer-card {
  background: var(--bg-card);
  border: 1px solid rgba(210, 153, 34, 0.4);
  border-left: 4px solid var(--warning);
  border-radius: 10px;
  padding: 1.5rem 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-top: 1rem;
}

.disclaimer-icon {
  font-size: 1.75rem;
  color: var(--warning);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.disclaimer-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.disclaimer-content p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0.5rem;
}

.disclaimer-content p.disclaimer-warning {
  font-size: 0.88rem;
  color: #d29922;
  margin-bottom: 0;
  background: rgba(210, 153, 34, 0.08);
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  border: 1px dashed rgba(210, 153, 34, 0.3);
}