/* ============================================================
   iTechFixr Docs — doc.itechfixr.com
   Extends itechfixr.css
   ============================================================ */

/* Subdomain banner (shared pattern) */
.sub-banner {
  background-color: rgba(5,14,26,0.92);
  border-bottom: 1px solid var(--border);
  padding: 8px 40px;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase;
  position: fixed; top: 0; left: 0; right: 0; z-index: 101;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.sub-banner-tag {
  display: inline-flex; align-items: center; gap: 8px; color: var(--primary);
}
.sub-banner-tag::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--primary); animation: pulse 2s infinite;
}
.sub-banner-back { color: var(--muted); text-decoration: none; transition: color 0.2s; }
.sub-banner-back:hover { color: var(--primary); }
body.subdomain { padding-top: 36px; }
body.subdomain nav { top: 36px; }

/* ───────── Docs hero ───────── */
.docs-hero {
  padding: 110px 40px 56px;
  background: linear-gradient(135deg, #020810 0%, #071525 60%, #0A1E2E 100%);
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.docs-hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
}
.docs-hero-glow {
  position: absolute; top: -100px; right: -50px;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,194,224,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.docs-hero-inner {
  max-width: 1400px; margin: 0 auto; position: relative; z-index: 1;
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.docs-hero-left { flex: 1; min-width: 320px; }
.docs-product-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--primary); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 18px;
}
.docs-product-badge .version-pill {
  background: rgba(0,194,224,0.1); border: 1px solid rgba(0,194,224,0.3);
  padding: 3px 10px; border-radius: 2px; color: var(--primary);
}
.docs-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.8vw, 3.4rem);
  font-weight: 800; line-height: 1.05; letter-spacing: -0.03em;
  color: var(--text); margin-bottom: 12px;
}
.docs-hero h1 span { color: var(--primary); }
.docs-tagline {
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 500;
  color: var(--primary); margin-bottom: 14px;
  font-style: italic; letter-spacing: -0.005em;
}
.docs-intro {
  font-size: 0.95rem; color: var(--muted); line-height: 1.7; max-width: 620px;
}
.docs-hero-right {
  display: flex; flex-direction: column; gap: 10px; align-items: flex-end;
}
.docs-search-box {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 16px;
  display: flex; align-items: center; gap: 10px;
  width: 320px; max-width: 100%;
  transition: border-color 0.2s;
}
.docs-search-box:focus-within { border-color: var(--primary); }
.docs-search-box svg { color: var(--muted); flex-shrink: 0; }
.docs-search-box input {
  background: transparent; border: none; outline: none;
  color: var(--text); font-family: var(--font-body); font-size: 0.875rem;
  flex: 1; padding: 0;
}
.docs-search-box .kbd-hint {
  font-family: var(--font-mono); font-size: 0.62rem; color: var(--muted);
  border: 1px solid var(--border); padding: 2px 6px; border-radius: 2px;
}

/* ───────── Layout: sidebar + content ───────── */
.docs-layout {
  display: grid; grid-template-columns: 280px 1fr;
  max-width: 1400px; margin: 0 auto;
  position: relative;
  background: var(--bg);
}

/* Sidebar */
.docs-sidebar {
  position: sticky; top: 104px;
  height: calc(100vh - 104px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 32px 0 40px;
  background: var(--bg);
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-track { background: transparent; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.docs-nav-section { margin-bottom: 4px; }
.docs-nav-label {
  padding: 10px 28px 6px;
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--muted); letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 700;
}
.docs-nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 28px;
  font-size: 0.875rem; color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  font-weight: 500;
}
.docs-nav-link .num {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--muted); opacity: 0.6;
  letter-spacing: 0.05em; flex-shrink: 0;
  min-width: 20px;
}
.docs-nav-link:hover {
  color: var(--text); background: rgba(0,194,224,0.03);
}
.docs-nav-link:hover .num { color: var(--primary); opacity: 1; }
.docs-nav-link.active {
  color: var(--primary); background: rgba(0,194,224,0.06);
  border-left-color: var(--primary);
}
.docs-nav-link.active .num { color: var(--primary); opacity: 1; }

/* Sub-nav (collapsible) */
.docs-nav-sub {
  margin-left: 38px; padding: 4px 0 6px;
  display: none;
  border-left: 1px dashed var(--border);
}
.docs-nav-section.has-sub.expanded .docs-nav-sub { display: block; }
.docs-nav-sub a {
  display: block;
  padding: 5px 14px;
  font-size: 0.78rem; color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}
.docs-nav-sub a:hover { color: var(--primary); }
.docs-nav-sub a.active { color: var(--primary); }

/* ───────── Main content ───────── */
.docs-main {
  padding: 40px 56px 80px;
  max-width: 920px;
  min-width: 0;
}

.docs-section { padding-top: 32px; margin-bottom: 40px; }
.docs-section:first-of-type { padding-top: 8px; }

.docs-section-header {
  margin-bottom: 24px; padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.docs-section-num {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--primary); letter-spacing: 0.12em;
  text-transform: uppercase; font-weight: 700;
  margin-bottom: 8px;
}
.docs-h1 {
  font-family: var(--font-display); font-size: 2rem; font-weight: 800;
  line-height: 1.15; color: var(--text);
  letter-spacing: -0.02em; margin-bottom: 10px;
}
.docs-section-intro {
  font-size: 0.95rem; color: var(--muted); line-height: 1.7;
}

.docs-h2 {
  font-family: var(--font-display); font-size: 1.35rem; font-weight: 700;
  line-height: 1.25; color: var(--text);
  letter-spacing: -0.015em;
  margin: 36px 0 14px;
}
.docs-h3 {
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 600;
  color: var(--text); letter-spacing: -0.005em;
  margin: 28px 0 10px;
}

.docs-main p {
  font-size: 0.92rem; line-height: 1.75; color: var(--muted);
  margin-bottom: 14px;
}
.docs-main p strong { color: var(--text); font-weight: 600; }
.docs-main ul, .docs-main ol {
  list-style: none; padding: 0; margin: 0 0 18px;
}
.docs-main ul li, .docs-main ol li {
  font-size: 0.92rem; line-height: 1.7; color: var(--muted);
  position: relative; padding-left: 22px; margin-bottom: 8px;
}
.docs-main ul li::before {
  content: ''; position: absolute; left: 6px; top: 13px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--primary); opacity: 0.7;
}
.docs-main ol { counter-reset: docs-step; }
.docs-main ol li {
  counter-increment: docs-step; padding-left: 32px;
}
.docs-main ol li::before {
  content: counter(docs-step);
  position: absolute; left: 0; top: 0;
  width: 22px; height: 22px; border-radius: 50%;
  background: rgba(0,194,224,0.1); border: 1px solid rgba(0,194,224,0.25);
  color: var(--primary);
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  background-color: transparent;
}
.docs-main strong { color: var(--text); font-weight: 600; }
.docs-main code {
  font-family: var(--font-mono); font-size: 0.82rem;
  background: rgba(0,194,224,0.08); border: 1px solid var(--border);
  color: var(--primary); padding: 1px 6px; border-radius: 3px;
}

/* ───────── Callouts: NOTE / TIP ───────── */
.callout {
  display: flex; gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius);
  margin: 20px 0 22px;
  border: 1px solid;
  align-items: flex-start;
}
.callout-icon {
  flex-shrink: 0;
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700;
}
.callout-body { flex: 1; }
.callout-label {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.12em; text-transform: uppercase; font-weight: 700;
  margin-bottom: 4px;
}
.callout p { margin: 0; font-size: 0.875rem; line-height: 1.7; color: var(--text); }
.callout p strong { color: var(--text); }

/* NOTE — info / caution */
.callout.note {
  background: rgba(77,168,218,0.05);
  border-color: rgba(77,168,218,0.3);
}
.callout.note .callout-icon {
  background: rgba(77,168,218,0.15);
  color: #4DA8DA; border: 1px solid rgba(77,168,218,0.4);
}
.callout.note .callout-label { color: #4DA8DA; }

/* TIP — best practice */
.callout.tip {
  background: rgba(200,162,42,0.05);
  border-color: rgba(200,162,42,0.3);
}
.callout.tip .callout-icon {
  background: rgba(200,162,42,0.15);
  color: #C8A22A; border: 1px solid rgba(200,162,42,0.4);
}
.callout.tip .callout-label { color: #C8A22A; }

/* WARN (reserved for future) */
.callout.warn {
  background: rgba(255,107,107,0.05);
  border-color: rgba(255,107,107,0.3);
}
.callout.warn .callout-icon {
  background: rgba(255,107,107,0.15);
  color: #ff6b6b; border: 1px solid rgba(255,107,107,0.4);
}
.callout.warn .callout-label { color: #ff6b6b; }

/* ───────── Tables ───────── */
.docs-table-wrap {
  margin: 18px 0 24px;
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow-x: auto;
}
.docs-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem; min-width: 600px;
}
.docs-table thead {
  background: rgba(0,194,224,0.04);
}
.docs-table th {
  padding: 12px 16px; text-align: left;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--primary); letter-spacing: 0.08em;
  text-transform: uppercase; font-weight: 700;
  border-bottom: 1px solid var(--border);
}
.docs-table td {
  padding: 12px 16px;
  color: var(--text); line-height: 1.6;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.docs-table tbody tr:last-child td { border-bottom: none; }
.docs-table tbody tr:hover { background: rgba(0,194,224,0.02); }
.docs-table .muted { color: var(--muted); }
.docs-table .yes { color: var(--primary); font-weight: 600; }
.docs-table .no { color: #ff6b6b; }

/* ───────── Module cards (sample content layout) ───────── */
.module-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px; margin: 24px 0 28px;
}
.module-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.15s;
}
.module-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}
.module-card-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}
.module-card-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  background: rgba(0,194,224,0.08);
  border: 1px solid var(--border); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
}
.module-card-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1rem; color: var(--text); letter-spacing: -0.01em;
  line-height: 1.25;
}
.module-card-audience {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--primary); letter-spacing: 0.06em;
  text-transform: uppercase; margin-bottom: 12px;
}
.module-card-features {
  list-style: none; padding: 0; margin: 0;
}
.module-card-features li {
  font-size: 0.82rem; color: var(--muted);
  padding-left: 16px; position: relative;
  line-height: 1.6; margin-bottom: 6px;
}
.module-card-features li::before {
  content: '→'; position: absolute; left: 0; top: 0;
  color: var(--primary); font-weight: 700;
}

/* All modules list (compact) */
.module-list-compact {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; margin: 18px 0 24px;
}
.module-list-item {
  background: rgba(0,194,224,0.04);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--text);
  transition: border-color 0.2s, background 0.2s;
  font-size: 0.85rem;
}
.module-list-item:hover {
  border-color: var(--primary); background: rgba(0,194,224,0.08);
}
.module-list-item-num {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--primary); letter-spacing: 0.05em;
  background: rgba(0,194,224,0.1);
  padding: 2px 7px; border-radius: 2px;
  border: 1px solid rgba(0,194,224,0.25);
  flex-shrink: 0;
}

/* ───────── Section divider ───────── */
.docs-divider {
  height: 1px; background: var(--border);
  margin: 56px 0; position: relative;
}
.docs-divider::after {
  content: ''; position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
  width: 60px; height: 3px; background: var(--primary);
}

/* ───────── Support footer strip ───────── */
.docs-support {
  background: linear-gradient(135deg, #020810 0%, #071525 60%, #0A1E2E 100%);
  border-top: 1px solid var(--border);
  padding: 56px 40px;
  position: relative; overflow: hidden;
}
.docs-support-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
}
.docs-support-inner {
  max-width: 1200px; margin: 0 auto; position: relative; z-index: 1;
}
.docs-support-title {
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 700;
  color: var(--text); margin-bottom: 8px; letter-spacing: -0.02em;
}
.docs-support-sub {
  color: var(--muted); font-size: 0.92rem; margin-bottom: 28px;
  line-height: 1.6;
}
.support-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.support-card {
  background: rgba(14,36,58,0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 8px;
  text-decoration: none; color: inherit;
  transition: border-color 0.2s, transform 0.15s;
}
.support-card:hover {
  border-color: var(--primary); transform: translateY(-2px);
}
.support-card-icon {
  width: 36px; height: 36px;
  background: rgba(0,194,224,0.08);
  border: 1px solid rgba(0,194,224,0.2);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); margin-bottom: 4px;
}
.support-card-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase;
}
.support-card-value {
  font-size: 0.9rem; color: var(--text); font-weight: 600;
  word-break: break-word;
}

/* Mobile menu toggle */
.docs-mobile-toc {
  display: none;
  position: fixed; bottom: 24px; right: 24px;
  z-index: 50;
  background: var(--primary); color: #000;
  border: none; border-radius: 50%;
  width: 54px; height: 54px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  cursor: pointer;
  align-items: center; justify-content: center;
  font-weight: 700;
}

/* ───────── Responsive ───────── */
@media (max-width: 1024px) {
  .docs-main { padding: 32px 32px 80px; }
  .module-list-compact { grid-template-columns: repeat(2, 1fr); }
  .support-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  body.subdomain { padding-top: 28px; }
  .sub-banner { padding: 6px 16px; font-size: 0.62rem; }
  .docs-hero { padding: 90px 20px 40px; }
  .docs-hero-inner { flex-direction: column; align-items: flex-start; }
  .docs-hero-right { width: 100%; align-items: stretch; }
  .docs-search-box { width: 100%; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: fixed; top: 0; bottom: 0; left: -100%;
    width: 280px; height: 100vh;
    z-index: 200; background: var(--bg);
    transition: left 0.3s;
    padding-top: 80px;
  }
  .docs-sidebar.open { left: 0; }
  .docs-main { padding: 24px 20px 60px; max-width: 100%; }
  .docs-mobile-toc { display: flex; }
  .docs-h1 { font-size: 1.6rem; }
  .module-grid { grid-template-columns: 1fr; }
  .module-list-compact { grid-template-columns: 1fr; }
  .support-cards { grid-template-columns: 1fr; }
  .docs-support { padding: 40px 20px; }
}