:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111728;
  --bg-card: #161d33;
  --bg-code: #0b1020;
  --accent: #7c5cff;
  --accent-2: #00d9ff;
  --accent-3: #ff4d9d;
  --text: #e5e9f0;
  --text-muted: #8b93a7;
  --border: #232b45;
  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --sidebar: 300px;
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  overflow-x: hidden;
}

/* Fondo animado */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(600px circle at 10% 10%, rgba(124,92,255,.15), transparent 40%),
    radial-gradient(700px circle at 90% 80%, rgba(0,217,255,.12), transparent 45%),
    radial-gradient(500px circle at 50% 50%, rgba(255,77,157,.06), transparent 50%);
  animation: float 18s ease-in-out infinite;
  z-index: -1;
  pointer-events: none;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 26px 20px;
  overflow-y: auto;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: .5px;
}

.logo::before {
  content: "❯_";
  font-family: monospace;
  color: var(--accent-2);
  -webkit-text-fill-color: var(--accent-2);
  font-size: 1.3rem;
}

.sidebar nav { display: flex; flex-direction: column; gap: 4px; }

.sidebar a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 9px 12px;
  border-radius: 9px;
  font-size: .93rem;
  transition: all .2s ease;
  border-left: 3px solid transparent;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar a:hover {
  background: rgba(124,92,255,.12);
  color: var(--text);
  border-left-color: var(--accent);
  transform: translateX(4px);
}

.sidebar a.active {
  background: linear-gradient(90deg, rgba(124,92,255,.25), transparent);
  color: #fff;
  border-left-color: var(--accent-2);
  box-shadow: inset 0 0 20px rgba(124,92,255,.1);
}

.sidebar a .num {
  font-family: monospace;
  font-size: .78rem;
  color: var(--accent-2);
  opacity: .7;
  min-width: 22px;
}

/* Content */
.content {
  padding: 50px 60px 100px;
  max-width: 1000px;
  animation: fadeIn .6s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

h1 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(120deg, #fff, var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -.5px;
}

h2 {
  font-size: 1.55rem;
  margin: 40px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: #fff;
}

h3 { font-size: 1.2rem; margin: 28px 0 10px; color: var(--accent-2); }

p { margin-bottom: 14px; color: var(--text); }
p.lead { color: var(--text-muted); font-size: 1.08rem; margin-bottom: 26px; }

ul, ol { margin: 10px 0 18px 26px; color: var(--text-muted); }
li { margin-bottom: 8px; }
li strong { color: var(--text); }

code {
  font-family: 'Fira Code', 'Consolas', monospace;
  background: var(--bg-code);
  color: var(--accent-2);
  padding: 2px 7px;
  border-radius: 5px;
  font-size: .9em;
  border: 1px solid var(--border);
}

pre {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 16px 0;
  overflow-x: auto;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: .88rem;
  line-height: 1.65;
  box-shadow: 0 6px 24px rgba(0,0,0,.35);
}

pre code {
  background: transparent;
  color: #c8d3f5;
  padding: 0;
  border: none;
  font-size: inherit;
}

pre::before {
  content: "";
  display: block;
  height: 12px;
  margin-bottom: 12px;
  background:
    radial-gradient(circle at 8px 6px, #ff5f56 5px, transparent 5px),
    radial-gradient(circle at 24px 6px, #ffbd2e 5px, transparent 5px),
    radial-gradient(circle at 40px 6px, #27c93f 5px, transparent 5px);
  background-repeat: no-repeat;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(124,92,255,.18);
  color: var(--accent-2);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 7px;
  font-size: .75rem;
  cursor: pointer;
  transition: all .2s;
  opacity: 0;
  font-family: inherit;
}

pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: var(--accent); color: #fff; }
.copy-btn.copied { background: var(--success); color: #06210f; border-color: var(--success); }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin: 20px 0;
  transition: all .3s cubic-bezier(.2,.8,.2,1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,92,255,.08), transparent 60%);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,92,255,.5);
  box-shadow: 0 12px 40px rgba(124,92,255,.18);
}

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

.card h3 { margin-top: 0; }

/* Avisos */
.note, .warn, .danger, .tip {
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 18px 0;
  border-left: 4px solid;
  background: rgba(255,255,255,.03);
  position: relative;
}

.note  { border-color: var(--accent-2); }
.warn  { border-color: var(--warning); animation: pulse 2.4s ease-in-out infinite; }
.danger{ border-color: var(--danger); }
.tip   { border-color: var(--success); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(251,191,36,.25); }
  50%      { box-shadow: 0 0 0 8px rgba(251,191,36,0); }
}

.note::before  { content: "ℹ️  "; margin-right: 4px; }
.warn::before  { content: "⚠️  "; margin-right: 4px; }
.danger::before{ content: "🛑 "; margin-right: 4px; }
.tip::before   { content: "✅ "; margin-right: 4px; }

/* Tablas */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

th {
  text-align: left;
  padding: 14px 16px;
  background: rgba(124,92,255,.12);
  color: var(--accent-2);
  font-size: .86rem;
  text-transform: uppercase;
  letter-spacing: .8px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  font-size: .94rem;
  color: var(--text-muted);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(124,92,255,.05); color: var(--text); }

td code { font-size: .85em; }

/* Navegación inferior */
.pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.pager a {
  flex: 1;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: all .25s;
}

.pager a:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(124,92,255,.2);
}

.pager .label {
  display: block;
  font-size: .72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.pager .next { text-align: right; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-2));
  border-radius: 10px;
  border: 2px solid var(--bg-primary);
}

/* Responsive */
@media (max-width: 900px) {
  body { grid-template-columns: 1fr; }
  .sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .content { padding: 30px 22px 60px; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.3rem; }
}