/* ─── Shared document page styles ─────────────────────────────
   Inherits design tokens from style.css — load style.css first
   ──────────────────────────────────────────────────────────── */

/* ─── Doc nav ──────────────────────────────────────────────── */
.doc-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,15,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 0;
}
.doc-nav__inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  position: relative;
}

.doc-nav__logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  margin-right: 0.5rem;
  padding-right: 1rem;
  border-right: 1px solid var(--border-2);
}
.doc-nav__logo span { color: var(--amber); font-family: var(--font-mono); }

/* Desktop links wrapper */
.doc-nav__links {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.doc-nav__links::-webkit-scrollbar { display: none; }

.doc-nav__link {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
  flex-shrink: 0;
}
.doc-nav__link:hover  { color: var(--text-primary); background: var(--surface); }
.doc-nav__link.active { color: var(--amber); background: var(--amber-dim); }

/* Optional CTA in nav (index.html) */
.doc-nav__cta { margin-left: 0.5rem; flex-shrink: 0; }

/* ─── Hamburger toggle ───────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  margin-left: auto;
  flex-shrink: 0;
  transition: border-color 0.2s;
}
.nav-toggle:hover { border-color: var(--amber); }
.nav-toggle__line {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  pointer-events: none;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ─── Mobile nav dropdown ────────────────────────────────────── */
.doc-nav__mobile {
  display: none;
  flex-direction: column;
  padding: 0.5rem 1.5rem 1rem;
  border-top: 1px solid var(--border);
  background: rgba(8,8,15,0.98);
}
.doc-nav__mobile.is-open { display: flex; }
.doc-nav__mobile .doc-nav__link {
  padding: 0.7rem 0.25rem;
  font-size: 0.875rem;
  border-radius: 0;
  border-bottom: 1px solid var(--border);
  white-space: normal;
}
.doc-nav__mobile .doc-nav__link:last-child { border-bottom: none; }
.doc-nav__mobile .doc-nav__cta { margin: 0.75rem 0 0; align-self: flex-start; }

/* ─── Doc layout ───────────────────────────────────────────── */
.doc-page { min-height: 100vh; }

.doc-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.doc-header__inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.doc-header__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 0.75rem;
}
.doc-header__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.doc-header__sub {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.doc-header__metrics {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.doc-metric { display: flex; flex-direction: column; gap: 0.2rem; }
.doc-metric__val {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-family: var(--font-mono);
  color: var(--amber);
}
.doc-metric__val.teal { color: var(--teal); }
.doc-metric__val.white { color: var(--text-primary); }
.doc-metric__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ─── Doc body ─────────────────────────────────────────────── */
.doc-body {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

/* ─── Doc sections ─────────────────────────────────────────── */
.doc-section { margin-bottom: 4rem; }
.doc-section + .doc-section { border-top: 1px solid var(--border); padding-top: 3.5rem; }

.doc-section__header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.doc-section__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.06em;
  flex-shrink: 0;
  width: 28px;
}
.doc-section__title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.doc-sub { margin-bottom: 2rem; }
.doc-sub__title {
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

/* ─── Prose ─────────────────────────────────────────────────── */
.doc-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}
.doc-body p strong { color: var(--text-primary); }
.doc-body ul {
  list-style: none;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.doc-body ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 1.1rem;
  position: relative;
}
.doc-body ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--amber);
  font-size: 0.75rem;
}

/* ─── Tables ────────────────────────────────────────────────── */
.doc-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-2);
  margin: 1.5rem 0;
}
.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.doc-table thead {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-2);
}
.doc-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 500;
}
.doc-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
  line-height: 1.5;
}
.doc-table tr:last-child td { border-bottom: none; }
.doc-table tr:hover td { background: rgba(255,255,255,0.015); }
.doc-table td strong { color: var(--text-primary); }
.doc-table td .amber { color: var(--amber); font-family: var(--font-mono); font-weight: 600; }
.doc-table td .teal  { color: var(--teal);  font-family: var(--font-mono); font-weight: 600; }
.doc-table td .muted { color: var(--text-muted); font-size: 0.8rem; }
.doc-table tr.total-row td { background: var(--surface); font-weight: 600; color: var(--text-primary); }

/* ─── Callout blocks ────────────────────────────────────────── */
.callout {
  display: flex;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 1.5rem 0;
}
.callout--teal  { border-left-color: var(--teal); }
.callout--rose  { border-left-color: var(--rose); }
.callout__icon  { flex-shrink: 0; font-size: 1rem; margin-top: 0.05rem; }
.callout strong { color: var(--text-primary); }

/* ─── Milestone timeline ────────────────────────────────────── */
.timeline { display: flex; flex-direction: column; gap: 0; }
.timeline-item {
  display: grid;
  grid-template-columns: 80px 1px 1fr;
  gap: 0 1.5rem;
  align-items: stretch;
}
.timeline-item__marker {
  text-align: right;
  padding: 0.1rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
}
.timeline-item__month {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.timeline-item__phase {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase;
}
.timeline-item__line {
  width: 1px;
  background: var(--border-2);
  position: relative;
  flex-shrink: 0;
}
.timeline-item__line::before {
  content: '';
  position: absolute;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  border: 2px solid var(--bg-base);
}
.timeline-item:last-child .timeline-item__line { background: linear-gradient(var(--border-2), transparent); }
.timeline-item__content { padding: 0 0 1.75rem; }
.timeline-item__content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.timeline-item__content p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0 !important;
}

/* ─── Metric callout row ────────────────────────────────────── */
.metric-row {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}
.metric-box {
  flex: 1;
  min-width: 140px;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.metric-box__val {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-family: var(--font-mono);
  color: var(--amber);
  margin-bottom: 0.2rem;
}
.metric-box__val.teal  { color: var(--teal); }
.metric-box__val.white { color: var(--text-primary); }
.metric-box__label {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ─── Risk badge ────────────────────────────────────────────── */
.risk-low    { color: var(--teal);  background: var(--teal-dim);  border: 1px solid rgba(32,212,192,0.2); }
.risk-med    { color: var(--amber); background: var(--amber-dim); border: 1px solid rgba(232,160,32,0.2); }
.risk-high   { color: var(--rose);  background: var(--rose-dim);  border: 1px solid rgba(232,64,106,0.2); }
.risk-badge  {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: inline-block;
}

/* ─── Doc footer ────────────────────────────────────────────── */
.doc-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 4rem;
}
.doc-footer__inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.doc-footer__links { display: flex; gap: 1.5rem; }
.doc-footer__links a { transition: color 0.2s; }
.doc-footer__links a:hover { color: var(--text-primary); }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .doc-nav__links  { display: none; }
  .doc-nav__cta    { display: none; }
  .nav-toggle      { display: flex; }
}

@media (max-width: 640px) {
  .doc-header__metrics { gap: 1.5rem; }
  .doc-metric__val     { font-size: 1.4rem; }
  .metric-row          { flex-direction: column; }
  .timeline-item       { grid-template-columns: 60px 1px 1fr; gap: 0 1rem; }
  .doc-body            { padding: 2rem 1rem 4rem; }
  .doc-table-wrap      { border-radius: var(--radius); }
  .doc-table th,
  .doc-table td        { padding: 0.6rem 0.75rem; font-size: 0.8rem; }
}