/* ═══════════════════════════════════════════════
   ESTÁNDAR LM — Design System
   estandar.luvameta.com
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:         #090E1B;
  --surface:    #0F172A;
  --surface-2:  #162033;
  --surface-3:  #1E2D47;
  --border:     #1E3452;
  --border-2:   #2A4070;
  --text:       #E2E8F0;
  --muted:      #7A90B0;
  --muted-2:    #4A6080;
  --accent:     #6366F1;
  --accent-2:   #818CF8;
  --accent-glow: rgba(99,102,241,0.15);
  --must:       #F87171;
  --must-bg:    rgba(248,113,113,0.12);
  --mustnot:    #FB7185;
  --mustnot-bg: rgba(251,113,133,0.12);
  --should:     #FBBF24;
  --should-bg:  rgba(251,191,36,0.12);
  --shouldnot:  #F59E0B;
  --may:        #34D399;
  --may-bg:     rgba(52,211,153,0.12);
  --cannot:     #F43F5E;
  --cannot-bg:  rgba(244,63,94,0.12);
  --code-bg:    #07111F;
  --radius:     8px;
  --radius-lg:  12px;
  --sidebar-w:  256px;
  --nav-h:      60px;
  --font-sans:  'Plus Jakarta Sans', system-ui, sans-serif;
  --font-head:  'Syne', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: #fff; }

/* ── TOP NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(9,14,27,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 32px;
  gap: 32px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-head);
  font-size: 15px; font-weight: 700;
  color: var(--text); text-decoration: none;
  white-space: nowrap;
}
.nav-logo .badge-lm {
  background: var(--accent);
  color: #fff;
  font-size: 11px; font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}
.nav-links {
  display: flex; align-items: center; gap: 4px;
  flex: 1;
}
.nav-links a {
  color: var(--muted);
  font-size: 13.5px; font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--text); }
.nav-sep { width: 1px; height: 20px; background: var(--border); margin: 0 8px; }
.nav-ext {
  margin-left: auto;
  display: flex; align-items: center; gap: 8px;
}
.nav-ext a {
  color: var(--muted); font-size: 12.5px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.15s;
}
.nav-ext a:hover { color: var(--text); border-color: var(--border-2); }

/* ── HOME HERO ── */
.hero {
  padding: calc(var(--nav-h) + 80px) 32px 80px;
  max-width: 900px; margin: 0 auto;
  text-align: center;
}
.hero-label {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-glow);
  border: 1px solid rgba(99,102,241,0.3);
  color: var(--accent-2);
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 32px;
  text-transform: uppercase;
}
.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #E2E8F0 0%, #818CF8 50%, #6366F1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 18px; color: var(--muted);
  max-width: 620px; margin: 0 auto 40px;
  line-height: 1.75;
}
.hero-ctas {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 12px;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px; font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius);
  transition: all 0.15s;
  text-decoration: none;
}
.btn-primary:hover { background: #5254C0; color: #fff; transform: translateY(-1px); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 14px; font-weight: 500;
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.15s;
  text-decoration: none;
}
.btn-secondary:hover { color: var(--text); border-color: var(--border-2); }

/* ── HOME — CARDS ── */
.section { padding: 0 32px 80px; max-width: 1100px; margin: 0 auto; }
.section-title {
  font-family: var(--font-head);
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.doc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  transition: all 0.2s;
  display: block;
  position: relative;
  overflow: hidden;
}
.doc-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.2s;
}
.doc-card:hover {
  border-color: var(--border-2);
  background: var(--surface-2);
  transform: translateY(-2px);
}
.doc-card:hover::before { opacity: 1; }
.doc-card-code {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--accent-2);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.doc-card h3 {
  font-family: var(--font-head);
  font-size: 17px; font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}
.doc-card p {
  font-size: 13.5px; color: var(--muted);
  line-height: 1.6;
}
.doc-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--border);
}
.badge-vigente {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.06em;
  color: var(--may); background: var(--may-bg);
  padding: 3px 8px; border-radius: 4px;
  text-transform: uppercase;
}
.doc-card-arrow { color: var(--accent-2); font-size: 18px; }

/* ── HOME — SYSTEM BOX ── */
.system-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 48px;
}
.system-box h2 {
  font-family: var(--font-head);
  font-size: 22px; font-weight: 700;
  margin-bottom: 16px;
}
.system-box p { color: var(--muted); font-size: 15px; line-height: 1.7; margin-bottom: 12px; }
.system-box p:last-child { margin-bottom: 0; }
.principle-box {
  background: var(--surface-2);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
  font-size: 14px; color: var(--text);
  line-height: 1.65;
}

/* ── HOME — TERM PILLS ── */
.terms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-bottom: 48px;
}
.term-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex; align-items: flex-start; gap: 12px;
}
.term-pill .pill-badge {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  margin-top: 1px;
}
.term-pill .pill-text {
  font-size: 13px; color: var(--muted);
  line-height: 1.5;
}
.term-pill .pill-text strong { color: var(--text); font-weight: 600; }

/* ── DOCUMENT LAYOUT ── */
.doc-layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--nav-h);
}
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  padding: 24px 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 2px; }
.sidebar-header {
  padding: 0 20px 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.sidebar-code {
  font-family: var(--font-mono);
  font-size: 10px; color: var(--accent-2);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.sidebar-title {
  font-family: var(--font-head);
  font-size: 13px; font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.sidebar-nav { padding: 0 12px; }
.sidebar-nav a {
  display: block;
  padding: 6px 8px;
  font-size: 12.5px; color: var(--muted);
  border-radius: 6px;
  transition: all 0.1s;
  line-height: 1.4;
}
.sidebar-nav a:hover { color: var(--text); background: var(--surface-2); }
.sidebar-nav a.active { color: var(--accent-2); background: var(--accent-glow); }
.sidebar-nav .nav-section { margin-top: 2px; }
.sidebar-nav .nav-subsection {
  padding-left: 20px;
  font-size: 12px;
}
.sidebar-footer {
  padding: 16px 20px 0;
  margin-top: 24px;
  border-top: 1px solid var(--border);
}
.sidebar-footer a {
  display: block;
  font-size: 12px; color: var(--muted);
  padding: 4px 0;
  transition: color 0.1s;
}
.sidebar-footer a:hover { color: var(--text); }

/* ── DOCUMENT CONTENT ── */
.doc-content {
  flex: 1;
  min-width: 0;
  padding: 48px 64px 80px;
  max-width: 900px;
}
.doc-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.doc-meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 24px;
}
.meta-tag {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.meta-tag.active { color: var(--may); border-color: rgba(52,211,153,0.3); background: var(--may-bg); }
.doc-header h1 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}
.doc-header .subtitle {
  font-size: 16px; color: var(--muted);
  line-height: 1.65;
  max-width: 640px;
}
.doc-prereqs {
  display: flex; align-items: center; gap: 8px;
  margin-top: 20px; flex-wrap: wrap;
}
.prereq-label { font-size: 12px; color: var(--muted-2); }
.prereq-tag {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--accent-2);
  background: var(--accent-glow);
  border: 1px solid rgba(99,102,241,0.25);
  padding: 3px 9px; border-radius: 4px;
  text-decoration: none;
  transition: all 0.1s;
}
.prereq-tag:hover { background: rgba(99,102,241,0.2); color: #fff; }

/* ── CONTENT TYPOGRAPHY ── */
.doc-content h1 {
  font-family: var(--font-head);
  font-size: 28px; font-weight: 800;
  margin: 56px 0 20px;
  padding-top: 16px;
  color: var(--text);
  letter-spacing: -0.01em;
  counter-reset: h2counter;
}
.doc-content h1:first-of-type { margin-top: 0; }
.doc-content h2 {
  font-family: var(--font-head);
  font-size: 20px; font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.doc-content h3 {
  font-family: var(--font-sans);
  font-size: 15px; font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text);
}
.doc-content p {
  margin-bottom: 16px;
  color: var(--muted);
  line-height: 1.75;
}
.doc-content p strong, .doc-content strong { color: var(--text); }
.doc-content ul, .doc-content ol {
  padding-left: 20px;
  margin-bottom: 16px;
  color: var(--muted);
}
.doc-content li { margin-bottom: 6px; line-height: 1.65; }

/* ── PRINCIPLE BOX ── */
.principle {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}
.principle .principle-label {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.1em;
  color: var(--accent-2);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 500;
}

/* ── WARNING / NOTE BOX ── */
.note {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--should);
  padding: 14px 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 16px 0;
  font-size: 13.5px; color: var(--muted);
  line-height: 1.65;
}
.note strong { color: var(--should); }

/* ── CODE BLOCKS ── */
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 20px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: #94D2BD;
  overflow-x: auto;
  white-space: pre;
}
.code-block .cm { color: var(--muted-2); } /* comment */
.code-block .kw { color: var(--accent-2); } /* keyword */
.code-block .st { color: #A8D8A8; } /* string */
.code-block .nm { color: #FFD700; } /* number */
.code-block .cn { color: var(--mustnot); } /* const */
code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--surface-3);
  color: var(--accent-2);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ── NORMATIVE BADGES ── */
.must { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: var(--must-bg); color: var(--must); border: 1px solid rgba(248,113,113,0.25); }
.must-not { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: var(--mustnot-bg); color: var(--mustnot); border: 1px solid rgba(251,113,133,0.25); }
.should { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: var(--should-bg); color: var(--should); border: 1px solid rgba(251,191,36,0.25); }
.should-not { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: rgba(245,158,11,0.12); color: var(--shouldnot); border: 1px solid rgba(245,158,11,0.25); }
.may { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: var(--may-bg); color: var(--may); border: 1px solid rgba(52,211,153,0.25); }
.cannot { display: inline-block; font-family: var(--font-mono); font-size: 10px; font-weight: 500; padding: 1px 6px; border-radius: 3px; letter-spacing: 0.05em; vertical-align: middle; background: var(--cannot-bg); color: var(--cannot); border: 1px solid rgba(244,63,94,0.25); }

/* ── TABLES ── */
.table-wrap { overflow-x: auto; margin: 24px 0; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
thead th {
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-align: left;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  line-height: 1.55;
  vertical-align: top;
}
tbody td strong { color: var(--text); font-weight: 600; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(99,102,241,0.04); }
td code { font-size: 11.5px; }

/* ── STATE BADGES ── */
.state { display: inline-flex; align-items: center; gap: 5px; font-family: var(--font-mono); font-size: 11px; font-weight: 500; padding: 3px 9px; border-radius: 4px; letter-spacing: 0.05em; }
.state-active { background: var(--may-bg); color: var(--may); border: 1px solid rgba(52,211,153,0.25); }
.state-suspended { background: var(--should-bg); color: var(--should); border: 1px solid rgba(251,191,36,0.25); }
.state-revoked { background: var(--mustnot-bg); color: var(--mustnot); border: 1px solid rgba(251,113,133,0.25); }
.state-planned { background: var(--surface-3); color: var(--muted); border: 1px solid var(--border); }
.state-ready { background: rgba(99,102,241,0.1); color: var(--accent-2); border: 1px solid rgba(99,102,241,0.25); }

/* ── DOC NAV (prev/next) ── */
.doc-nav {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-top: 64px; padding-top: 32px;
  border-top: 1px solid var(--border);
}
.doc-nav-link {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  text-decoration: none;
  transition: all 0.15s;
  display: block;
}
.doc-nav-link:hover { border-color: var(--border-2); background: var(--surface-2); }
.doc-nav-link .nav-direction {
  font-size: 11px; color: var(--muted-2);
  margin-bottom: 4px; letter-spacing: 0.05em;
}
.doc-nav-link .nav-title {
  font-family: var(--font-head);
  font-size: 14px; font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.doc-nav-link.next { text-align: right; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px;
  text-align: center;
  color: var(--muted-2);
  font-size: 12.5px;
  line-height: 1.7;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--text); }

/* ── ALGO BOX (for algorithm pseudocode) ── */
.algo-box {
  background: var(--code-bg);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 24px;
  margin: 20px 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: #94D2BD;
  white-space: pre;
  overflow-x: auto;
}
.algo-box .cm { color: var(--muted-2); }
.algo-box .kw { color: var(--accent-2); }
.algo-box .ok { color: var(--may); }
.algo-box .err { color: var(--must); }

/* ── SECTION ANCHOR ── */
.anchor-link {
  color: var(--muted-2);
  margin-left: 8px;
  font-size: 0.75em;
  opacity: 0;
  transition: opacity 0.1s;
  font-family: var(--font-mono);
}
h1:hover .anchor-link,
h2:hover .anchor-link,
h3:hover .anchor-link { opacity: 1; }

/* ── SCHEMA PAGE ── */
.schema-meta {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px; margin: 24px 0;
}
.schema-meta-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.schema-meta-item .label {
  font-size: 11px; color: var(--muted-2);
  letter-spacing: 0.05em; margin-bottom: 4px;
}
.schema-meta-item .value {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--accent-2);
}

/* ── TRANSITION DIAGRAM ── */
.diagram-box {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 20px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: #94D2BD;
  white-space: pre;
  overflow-x: auto;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .doc-content { padding: 24px 20px 48px; }
  .nav { padding: 0 16px; gap: 16px; }
  .hero { padding: calc(var(--nav-h) + 40px) 20px 48px; }
  .section { padding: 0 20px 48px; }
  .doc-nav { grid-template-columns: 1fr; }
}