/* ══════════════════════════════════════
   DESIGN SYSTEM — CSS VARIABLES
══════════════════════════════════════ */
:root {
  --ink: #0a0f1e;
  --paper: #f4f1eb;
  --signal: #00e5a0;
  --signal-dim:#00a872;
  --accent: #ff4b6e;
  --blue: #1a5fe4;
  --blue-lt: #d6e4ff;
  --warn: #f59e0b;
  --muted: #6b7280;
  --border: rgba(10,15,30,0.12);
  --card-bg: #ffffff;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(10,15,30,0.08);
  --shadow-lg: 0 8px 40px rgba(10,15,30,0.13);
}

/* ══════════════════════════════════════
   RESET + BASE
══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); }

/* ══════════════════════════════════════
   NAV
══════════════════════════════════════ */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0;
  height: 52px;
  padding: 0 24px;
  border-bottom: 2px solid var(--signal);
  overflow-x: auto;
}
nav .brand {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--signal);
  letter-spacing: 0.06em;
  white-space: nowrap;
  margin-right: 28px;
  font-weight: 600;
}
nav button {
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  font-family: var(--sans);
  font-size: 13px;
  padding: 0 14px;
  height: 52px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-bottom 0.15s;
  border-bottom: 3px solid transparent;
  font-weight: 500;
}
nav button:hover { color: #fff; }
nav button.active { color: var(--signal); border-bottom-color: var(--signal); }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  background: var(--ink);
  color: #fff;
  padding: 72px 24px 56px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 50%, rgba(0,229,160,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--signal);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero h1 span { color: var(--signal); }
.hero-sub {
  color: rgba(255,255,255,0.65);
  font-size: 16px;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.12s;
  font-family: var(--sans);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
.btn:active { transform: none; }
.btn-primary { background: var(--signal); color: var(--ink); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--signal); color: var(--signal); }
.btn-sm { padding: 7px 14px; font-size: 12px; }

.hero-stat-box {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(0,229,160,0.2);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.hero-stat {
  display: flex;
  flex-direction: column;
}
.hero-stat .num {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 600;
  color: var(--signal);
  line-height: 1;
}
.hero-stat .label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}
.hero-stat .src {
  font-size: 10px;
  color: rgba(255,255,255,0.3);
  font-family: var(--mono);
  margin-top: 2px;
}

/* ══════════════════════════════════════
   LAYOUT
══════════════════════════════════════ */
.page { display: none; animation: fadeIn 0.2s ease; }
.page.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
}

.section-head {
  margin-bottom: 28px;
}
.section-head h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section-head p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
}
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--blue-lt);
  color: var(--blue);
  letter-spacing: 0.04em;
  font-weight: 600;
  text-transform: uppercase;
  margin-right: 6px;
  margin-bottom: 10px;
}
.tag.green { background: #d1fae5; color: #047857; }
.tag.red { background: #fee2e2; color: #b91c1c; }
.tag.warn { background: #fef3c7; color: #92400e; }
.tag.mono { background: var(--ink); color: var(--signal); }

/* ══════════════════════════════════════
   CARDS
══════════════════════════════════════ */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none; /* si usas <a> */
  color: inherit;        /* mantiene colores del texto */
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
  cursor: pointer;
}

.card-grid {
  display: grid;
  gap: 20px;
}
.card-grid.col2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card-grid.col3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}
.card p {
  font-size: 14px;
  color: var(--muted);
}

/* ══════════════════════════════════════
   FLOW / TIMELINE
══════════════════════════════════════ */
.flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.flow-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0 20px;
  position: relative;
}
.flow-step + .flow-step .step-line { top: 0; }
.step-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--signal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  border: 2px solid var(--signal);
}
.step-line {
  flex: 1;
  width: 2px;
  background: linear-gradient(to bottom, var(--signal), var(--border));
  min-height: 32px;
}
.step-body {
  padding: 4px 0 36px;
}
.step-body h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}
.step-body p { font-size: 13.5px; color: var(--muted); margin-bottom: 10px; }
.step-body .detail {
  background: var(--paper);
  border-left: 3px solid var(--signal);
  border-radius: 0 6px 6px 0;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink);
}
.step-body .detail strong { color: var(--signal-dim); }

/* ══════════════════════════════════════
   TABLE
══════════════════════════════════════ */
.table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  background: var(--ink);
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 16px;
  text-align: left;
  font-weight: 400;
}
tbody tr { border-bottom: 1px solid var(--border); }
tbody tr:last-child { border: none; }
tbody tr:hover { background: rgba(0,229,160,0.04); }
tbody td { padding: 11px 16px; vertical-align: top; }
tbody td:first-child { font-weight: 600; }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge.green { background: #d1fae5; color: #047857; }
.badge.blue { background: var(--blue-lt); color: var(--blue); }
.badge.red { background: #fee2e2; color: #b91c1c; }

/* ══════════════════════════════════════
   SIMULATOR
══════════════════════════════════════ */
.sim-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.sim-form label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}
.sim-form select,
.sim-form input[type=range],
.sim-form input[type=number] {
  width: 100%;
  font-family: var(--sans);
  font-size: 14px;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  margin-bottom: 18px;
  appearance: none;
  outline: none;
  transition: border-color 0.15s;
}
.sim-form select:focus,
.sim-form input:focus { border-color: var(--signal); }
.sim-form input[type=range] {
  padding: 0;
  height: 6px;
  accent-color: var(--signal);
  background: var(--border);
  cursor: pointer;
}
.sim-result {
  background: var(--ink);
  border-radius: 12px;
  padding: 28px;
  color: #fff;
  font-family: var(--mono);
}
.sim-result .res-label {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.sim-result .res-val {
  font-size: 36px;
  color: var(--signal);
  font-weight: 600;
  margin-bottom: 20px;
}
.sim-breakdown {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sim-breakdown .row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding-bottom: 6px;
  color: rgba(255,255,255,0.65);
}
.sim-breakdown .row span:last-child { color: #fff; font-weight: 600; }
.mini-chart {
  margin-top: 20px;
  display: flex;
  gap: 8px;
  align-items: flex-end;
  height: 80px;
}
.mini-bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  min-height: 8px;
  transition: height 0.35s cubic-bezier(0.34,1.56,0.64,1);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 4px;
  font-size: 10px;
  font-weight: 600;
}

/* ══════════════════════════════════════
   SPEC ANATOMY
══════════════════════════════════════ */
.spec-anatomy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.spec-block {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.spec-block-head {
  background: var(--ink);
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 16px;
}
.spec-block-body {
  padding: 16px;
  background: #fff;
  font-size: 13px;
}
.spec-block-body li {
  list-style: none;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.spec-block-body li:last-child { border: none; }
.spec-block-body li::before {
  content: '→';
  color: var(--signal-dim);
  font-family: var(--mono);
  flex-shrink: 0;
}

/* ══════════════════════════════════════
   QUOTES
══════════════════════════════════════ */
.quote-card {
  border-left: 4px solid var(--signal);
  background: var(--card-bg);
  border-radius: 0 10px 10px 0;
  padding: 18px 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.quote-card blockquote {
  font-size: 15px;
  font-style: italic;
  color: var(--ink);
  margin-bottom: 8px;
  line-height: 1.6;
}
.quote-card cite {
  font-size: 12px;
  color: var(--muted);
  font-family: var(--mono);
}

/* ══════════════════════════════════════
   ADR
══════════════════════════════════════ */
.adr-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 16px;
}
.adr-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--paper);
  cursor: pointer;
  user-select: none;
}
.adr-head:hover { background: #ede9e0; }
.adr-id {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  flex-shrink: 0;
}
.adr-title { font-size: 14px; font-weight: 600; flex: 1; }
.adr-status { font-size: 11px; }
.adr-chevron {
  font-size: 12px;
  color: var(--muted);
  transition: transform 0.2s;
}
.adr-body {
  display: none;
  padding: 18px;
  background: #fff;
  font-size: 13.5px;
  color: var(--ink);
  border-top: 1px solid var(--border);
}
.adr-body.open { display: block; }
.adr-body h5 {
  font-size: 11px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 12px 0 4px;
}
.adr-body h5:first-child { margin-top: 0; }

/* ══════════════════════════════════════
   RISK MATRIX
══════════════════════════════════════ */
.risk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.risk-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  border-top: 4px solid;
}
.risk-item.high { border-top-color: var(--accent); }
.risk-item.med { border-top-color: var(--warn); }
.risk-item.low { border-top-color: var(--signal); }
.risk-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.risk-item.high .risk-label { color: var(--accent); }
.risk-item.med .risk-label { color: var(--warn); }
.risk-item.low .risk-label { color: var(--signal-dim); }
.risk-item h4 { font-size: 14px; margin-bottom: 6px; }
.risk-item p { font-size: 12.5px; color: var(--muted); }
.risk-item .mit {
  margin-top: 10px;
  padding: 8px 10px;
  background: var(--paper);
  border-radius: 6px;
  font-size: 12px;
  font-style: italic;
}

/* ══════════════════════════════════════
   GOLDEN RULE
══════════════════════════════════════ */
.golden {
  background: var(--ink);
  border-radius: 14px;
  padding: 40px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.golden::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0,229,160,0.1), transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(26,95,228,0.1), transparent 60%);
}
.golden h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}
.golden p { color: rgba(255,255,255,0.6); position: relative; margin-bottom: 28px; }
.golden-rules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  position: relative;
  text-align: left;
}
.golden-rule-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(0,229,160,0.2);
  border-radius: 10px;
  padding: 16px;
}
.golden-rule-item .icon { font-size: 24px; margin-bottom: 8px; }
.golden-rule-item h4 { font-size: 13px; font-weight: 700; color: var(--signal); margin-bottom: 4px; }
.golden-rule-item p { font-size: 12px; color: rgba(255,255,255,0.55); }

/* ══════════════════════════════════════
   HERO PILLARS (intro)
══════════════════════════════════════ */
.hero-pillars {
  max-width: 1100px;
  margin: 36px auto 0;
  padding: 0 24px;
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
  gap: 14px;
}
.hero-pillars.visible { display: grid; }
.hero-pillar {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(0,229,160,0.18);
  border-radius: 10px;
  padding: 16px;
}
.hero-pillar .p-icon { font-size: 22px; margin-bottom: 8px; }
.hero-pillar h4 { font-size: 13px; font-weight: 700; color: var(--signal); margin-bottom: 4px; }
.hero-pillar p { font-size: 12px; color: rgba(255,255,255,0.6); line-height: 1.5; }

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
  background: var(--ink);
  color: rgba(255,255,255,0.4);
  text-align: center;
  padding: 24px;
  font-family: var(--mono);
  font-size: 12px;
  border-top: 1px solid var(--signal-dim);
}

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 720px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-stat-box { display: none; }
  .sim-grid { grid-template-columns: 1fr; }
  .spec-anatomy { grid-template-columns: 1fr; }
  .risk-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════
   NAV LINKS (multi-page version)
══════════════════════════════════════ */
nav a.nav-link { background:none; border:none; color:rgba(255,255,255,0.6); font-family:'IBM Plex Sans',sans-serif; font-size:13px; padding:0 14px; height:52px; cursor:pointer; white-space:nowrap; transition:color 0.15s; border-bottom:3px solid transparent; font-weight:500; display:inline-flex; align-items:center; text-decoration:none; }
nav a.nav-link:hover { color:#fff; text-decoration:none; }
nav a.nav-link.active { color:var(--signal); border-bottom-color:var(--signal); }