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

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --accent-color: #60a5fa;
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.9);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --success: #10b981;
  --warning: #f59e0b;
  --border: rgba(148, 163, 184, 0.2);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  /* Changed from blue gradient to placeholder image URL */
  background-image: url("./od_clouds.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(2px);
  z-index: -1;
}

/* Navigation */
.navbar {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.nav-logo h1 {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 700;
}

.nav-logo .subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: block;
  margin-top: -0.25rem;
}

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

.nav-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
}

.nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
}

.github-link {
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: white !important;
  border-radius: 6px;
  transition: background 0.3s;
}

.github-link:hover {
  background: var(--secondary-color);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: 0.25rem;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: 0.3s;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0;
  margin-bottom: 4rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 2rem;
  line-height: 1.8;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* Sections */
.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--text-primary);
}

.features {
  margin-bottom: 4rem;
}

.feature-highlight {
  text-align: center;
  margin-bottom: 3rem;
}

.philosophy-quote {
  font-size: 1.5rem;
  font-style: italic;
  color: var(--accent-color);
  font-weight: 300;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.2);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h4 {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

/* Capabilities */
.capabilities {
  margin-bottom: 4rem;
}

.capabilities-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.capability-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
}

.check-icon {
  color: var(--success);
  font-weight: 700;
  font-size: 1.5rem;
}

/* Code Blocks */
.code-block {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1rem 0;
  overflow-x: auto;
  position: relative;
}

.code-block pre {
  margin: 0;
  color: var(--text-primary);
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
}

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

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.3s;
}

.copy-btn:hover {
  background: var(--secondary-color);
}

.inline-code {
  background: rgba(37, 99, 235, 0.2);
  color: var(--accent-color);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  font-size: 0.9em;
}

/* Usage Preview */
.usage-preview {
  margin-bottom: 4rem;
}

/* CTA Section */
.cta-section {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem;
  margin-top: 4rem;
}

.cta-section h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

/* Footer */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  color: var(--text-secondary);
}

/* Documentation Specific */
.doc-container {
  max-width: 900px;
}

.doc-header {
  text-align: center;
  margin-bottom: 3rem;
}

.doc-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.doc-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.doc-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem;
}

.doc-section {
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}

.doc-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.doc-section h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.doc-section h4 {
  font-size: 1.25rem;
  margin: 1.5rem 0 1rem;
  color: var(--text-primary);
}

/* Method Badge */
.method-badge {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.method-badge.recommended {
  background: var(--success);
  color: white;
}

/* Tabs */
.install-tabs {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0 1rem;
}

.tab-btn {
  flex: 1;
  padding: 0.75rem;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s;
}

.tab-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tab-content {
  display: none;
}

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

/* Boxes */
.note {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 0.75rem;
  font-style: italic;
}

.warning-box {
  background: rgba(245, 158, 11, 0.1);
  border-left: 4px solid var(--warning);
  padding: 1rem;
  border-radius: 6px;
  margin: 1rem 0;
  color: var(--warning);
}

.requirements-box {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--primary-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.requirements-box h4 {
  margin-top: 0;
  color: var(--primary-color);
}

.requirements-box ul {
  margin: 1rem 0 0 1.5rem;
}

.download-box {
  text-align: center;
  margin: 2rem 0;
}

/* Install Steps */
.install-steps {
  margin-top: 2rem;
}

.steps-list {
  margin-left: 1.5rem;
  color: var(--text-secondary);
}

.steps-list li {
  margin-bottom: 0.5rem;
}

/* Tables */
.table-container {
  overflow-x: auto;
  margin: 1.5rem 0;
}

.options-table,
.platform-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  overflow: hidden;
}

.options-table th,
.platform-table th {
  background: var(--primary-color);
  color: white;
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

.options-table td,
.platform-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.options-table tr:last-child td,
.platform-table tr:last-child td {
  border-bottom: none;
}

.options-table code {
  background: rgba(37, 99, 235, 0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--accent-color);
}

/* Example Cards */
.example-card {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.example-card h4 {
  margin-top: 0;
  color: var(--primary-color);
}

.example-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Workflow Steps */
.workflow-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.workflow-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h4 {
  margin: 0 0 0.5rem;
}

.step-content p {
  color: var(--text-secondary);
  margin: 0;
}

/* Use Cases */
.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.use-case-category {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
}

.use-case-category h4 {
  margin-top: 0;
  color: var(--primary-color);
}

.use-case-category ul {
  margin-left: 1.5rem;
  color: var(--text-secondary);
}

.use-case-category li {
  margin-bottom: 0.5rem;
}

/* Limitations */
.limitations-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.limitation-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.limit-icon {
  color: var(--warning);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.limitation-item p {
  color: var(--text-secondary);
  margin: 0;
}

/* Roadmap */
.roadmap-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  list-style: none;
}

.roadmap-list li {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 6px;
  color: var(--text-secondary);
}

.roadmap-list li::before {
  content: "→ ";
  color: var(--primary-color);
  font-weight: 700;
}

/* Permissions Section */
.permissions-section {
  background: rgba(245, 158, 11, 0.05);
  border: 1px solid var(--warning);
  border-radius: 8px;
  padding: 2rem;
}

.permissions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.permission-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.permission-item strong {
  color: var(--primary-color);
}

/* Next Steps / Contribute */
.next-steps,
.contribute-section {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--primary-color);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  margin-top: 2rem;
}

.next-steps h3,
.contribute-section h3 {
  margin-top: 0;
  color: var(--primary-color);
}

.next-steps p,
.contribute-section p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 1rem 0;
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-menu li {
    width: 100%;
    text-align: center;
    padding: 1rem;
  }

  .nav-menu a.active::after {
    display: none;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .container {
    padding: 2rem 1rem;
  }

  .doc-content {
    padding: 1.5rem;
  }

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

  .capabilities-list {
    grid-template-columns: 1fr;
  }

  .install-tabs {
    flex-direction: column;
  }
}