/* ============================================================
   DJMusicBot — Global Stylesheet
   Dark theme, mobile-first, no external dependencies
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  --bg-primary:    #0d1117;
  --bg-secondary:  #161b22;
  --bg-card:       #21262d;
  --accent:        #5865F2;
  --accent-hover:  #4752c4;
  --accent-glow:   rgba(88, 101, 242, 0.25);
  --text-primary:  #e6edf3;
  --text-secondary:#8b949e;
  --success:       #57F287;
  --warning:       #FEE75C;
  --danger:        #ED4245;
  --border:        #30363d;
  --code-bg:       #161b22;
  --code-border:   #30363d;
  --nav-height:    64px;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;
  --shadow-card:   0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-btn:    0 2px 12px rgba(88, 101, 242, 0.4);
  --transition:    200ms ease;
  --font-sans:     'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:     'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--accent-hover);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul {
  list-style: none;
}

/* ── Layout Helpers ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 4px 20px rgba(88, 101, 242, 0.55);
  transform: translateY(-1px);
  color: #fff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ── Navigation ──────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(13, 17, 23, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition), background-color var(--transition);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Hamburger — mobile only */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.nav-toggle:hover {
  background-color: var(--bg-card);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(88, 101, 242, 0.12) 0%, transparent 70%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.8rem;
  color: var(--success);
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.3px;
}

.hero-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.85); }
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 64px;
  flex-wrap: wrap;
}

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

.hero-stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  display: block;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Features Grid ───────────────────────────────────────────── */
.features {
  background-color: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card), 0 0 0 1px var(--accent);
  transform: translateY(-3px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Commands Preview ────────────────────────────────────────── */
.commands-preview {
  padding: 80px 0;
}

.commands-preview .section-header {
  text-align: center;
  margin-bottom: 48px;
}

.terminal {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow-card);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

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

.terminal-dot.red   { background-color: #ff5f57; }
.terminal-dot.yellow{ background-color: #ffbd2e; }
.terminal-dot.green { background-color: #27c93f; }

.terminal-title {
  margin-left: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 2;
}

.cmd-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.cmd-prompt {
  color: var(--accent);
  user-select: none;
  flex-shrink: 0;
}

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

.cmd-comment {
  color: var(--text-secondary);
  font-style: italic;
  margin-left: auto;
}

/* ── Command Tables (commands.html) ──────────────────────────── */
.commands-page {
  padding: 60px 0 80px;
}

.commands-intro {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 48px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.commands-intro code {
  background-color: var(--bg-card);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.cmd-category {
  margin-bottom: 56px;
}

.cmd-category-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cmd-category-title .cat-icon {
  font-size: 1.1rem;
}

.cmd-category-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  background-color: var(--bg-card);
}

thead th {
  padding: 13px 18px;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background-color: var(--bg-card);
}

tbody td {
  padding: 13px 18px;
  color: var(--text-secondary);
  vertical-align: top;
}

tbody td:first-child {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  white-space: nowrap;
}

tbody td:last-child {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ── Page Hero (inner pages) ──────────────────────────────────── */
.page-hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(88, 101, 242, 0.08) 0%, transparent 70%);
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
}

/* ── Steps (installation.html, self-host.html) ───────────────── */
.steps-section {
  padding: 64px 0;
}

.steps-grid {
  display: grid;
  gap: 24px;
}

.step-card {
  display: flex;
  gap: 20px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition);
}

.step-card:hover {
  border-color: var(--accent);
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
}

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

/* ── Code Blocks ──────────────────────────────────────────────── */
.code-block {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  overflow-x: auto;
  margin: 12px 0;
  line-height: 1.8;
  white-space: pre;
}

.code-block .comment {
  color: var(--text-secondary);
  font-style: italic;
}

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

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

.inline-code {
  background-color: var(--bg-card);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.87em;
  border: 1px solid var(--border);
}

/* ── Permissions Table ────────────────────────────────────────── */
.perms-table tbody td:first-child {
  color: var(--text-primary);
  font-family: inherit;
  font-weight: 600;
}

.perm-required {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--success);
  font-size: 0.82rem;
  font-weight: 600;
}

/* ── Troubleshooting ─────────────────────────────────────────── */
.troubleshoot-section {
  padding: 0 0 80px;
}

.trouble-list {
  display: grid;
  gap: 16px;
}

.trouble-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  border-radius: var(--radius-md);
  padding: 20px 22px;
}

.trouble-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.trouble-item p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Prerequisites ───────────────────────────────────────────── */
.prereq-list {
  display: grid;
  gap: 12px;
  margin-bottom: 48px;
}

.prereq-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.prereq-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.prereq-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.prereq-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Alert / Info Box ────────────────────────────────────────── */
.alert {
  display: flex;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 20px 0;
}

.alert-info {
  background-color: rgba(88, 101, 242, 0.1);
  border: 1px solid rgba(88, 101, 242, 0.3);
  color: var(--text-secondary);
}

.alert-info strong {
  color: var(--accent);
}

.alert-success {
  background-color: rgba(87, 242, 135, 0.08);
  border: 1px solid rgba(87, 242, 135, 0.25);
  color: var(--text-secondary);
}

.alert-success strong {
  color: var(--success);
}

/* ── Footer ───────────────────────────────────────────────────── */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.footer-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-brand-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-secondary);
  width: 100%;
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

/* ── Utility ──────────────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: rgba(88, 101, 242, 0.15);
  color: var(--accent);
  border: 1px solid rgba(88, 101, 242, 0.3);
}

.divider {
  height: 1px;
  background-color: var(--border);
  margin: 48px 0;
}

.text-accent   { color: var(--accent); }
.text-success  { color: var(--success); }
.text-muted    { color: var(--text-secondary); }
.text-center   { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    padding: 72px 0 56px;
  }

  /* Nav mobile */
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
  }

  .nav-links.is-open + .nav-cta {
    display: flex;
    position: absolute;
    top: calc(var(--nav-height) + 112px);
    left: 0;
    right: 0;
    padding: 16px 24px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: sticky;
  }

  /* hero stats */
  .hero-stats {
    gap: 24px;
  }

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

  /* step card */
  .step-card {
    flex-direction: column;
    gap: 14px;
  }

  /* footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  /* terminal */
  .terminal-body {
    font-size: 0.78rem;
  }

  .cmd-comment {
    display: none;
  }

  tbody td:last-child {
    white-space: normal;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
}