/* CoffeeFixManual — Technical Documentation Stylesheet */
/* Aesthetic: Precision instrument manual. Industrial clarity. Zero decoration, maximum function. */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
  --ink: #1a1a1a;
  --ink-muted: #555;
  --ink-faint: #888;
  --rule: #d4d4d4;
  --rule-strong: #aaa;
  --bg: #fafafa;
  --bg-panel: #f2f2f0;
  --bg-code: #ebebeb;
  --blue: #0057b8;
  --blue-light: #e8f0fb;
  --orange: #c0510a;
  --orange-light: #fff3eb;
  --red: #b81414;
  --green: #1a6b2e;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
  --sans: 'IBM Plex Sans', -apple-system, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ── SITE HEADER ─────────────────────────────────────────── */
.site-header {
  border-bottom: 3px solid var(--ink);
  padding: 24px 0 16px;
  margin-bottom: 40px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.site-header .logo {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header .logo span {
  color: var(--blue);
}

.site-header nav {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-header nav a {
  color: var(--ink-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}

.site-header nav a:hover {
  color: var(--blue);
  border-color: var(--blue);
}

/* ── BREADCRUMB ─────────────────────────────────────────── */
.breadcrumb {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}

.breadcrumb a { color: var(--ink-faint); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { margin: 0 6px; }

/* ── TYPOGRAPHY ─────────────────────────────────────────── */
h1 {
  font-family: var(--sans);
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 8px;
  border-bottom: 2px solid var(--blue);
  padding-bottom: 14px;
}

h2 {
  font-family: var(--sans);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  margin: 40px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 28px 0 10px;
}

p { margin-bottom: 16px; }

strong { font-weight: 600; color: var(--ink); }

code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--bg-code);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--ink);
}

/* ── QUICK-FIX BOX ──────────────────────────────────────── */
.quick-fix {
  background: var(--orange-light);
  border: 1.5px solid var(--orange);
  border-left: 5px solid var(--orange);
  border-radius: 4px;
  padding: 20px 24px;
  margin: 28px 0;
}

.quick-fix .qf-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
  display: block;
}

.quick-fix ol {
  padding-left: 20px;
  margin: 0;
}

.quick-fix li {
  margin-bottom: 8px;
  font-weight: 500;
  line-height: 1.5;
}

.quick-fix li:last-child { margin-bottom: 0; }

/* ── WARNING / NOTE BOXES ───────────────────────────────── */
.callout {
  padding: 16px 20px;
  border-radius: 4px;
  margin: 24px 0;
  border-left: 4px solid;
  font-size: 0.92rem;
}

.callout.warning {
  background: #fff8e1;
  border-color: #f9a825;
  color: #5f4b00;
}

.callout.danger {
  background: #ffeaea;
  border-color: var(--red);
  color: #6b0000;
}

.callout.info {
  background: var(--blue-light);
  border-color: var(--blue);
  color: #00236b;
}

.callout strong {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

/* ── SPEC TABLE ─────────────────────────────────────────── */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.85rem;
  margin: 24px 0;
}

.spec-table th {
  background: var(--ink);
  color: #fff;
  text-align: left;
  padding: 9px 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.spec-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.spec-table tr:nth-child(even) td { background: var(--bg-panel); }

/* ── FAQ SECTION ─────────────────────────────────────────── */
.faq-section { margin-top: 44px; }

.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
}

.faq-item:last-child { border-bottom: none; }

.faq-q {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
  font-size: 0.97rem;
}

.faq-a {
  color: var(--ink-muted);
  font-size: 0.93rem;
  margin: 0;
}

/* ── STEP LIST ───────────────────────────────────────────── */
.step-list {
  list-style: none;
  padding: 0;
  counter-reset: steps;
}

.step-list li {
  counter-increment: steps;
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  align-items: flex-start;
}

.step-list li::before {
  content: counter(steps);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: var(--blue);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 3px;
}

/* ── LINKS ────────────────────────────────────────────────── */
a { color: var(--blue); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--blue); }

.internal-link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--blue);
  text-transform: uppercase;
  margin: 6px 0;
}

.internal-link::after { content: " →"; }

/* ── BRAND HUB CARD GRID ─────────────────────────────────── */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.hub-card {
  background: var(--bg-panel);
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--blue);
  padding: 18px 20px;
  border-radius: 4px;
}

.hub-card h3 {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
  margin: 0 0 8px;
}

.hub-card ul {
  padding-left: 16px;
  font-size: 0.88rem;
}

.hub-card li { margin-bottom: 5px; }

/* ── TOOL EMBED ──────────────────────────────────────────── */
.tool-panel {
  background: var(--bg-panel);
  border: 1px solid var(--rule-strong);
  padding: 24px;
  border-radius: 4px;
  margin: 32px 0;
}

.tool-panel label {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--ink-muted);
}

.tool-panel input,
.tool-panel select {
  font-family: var(--mono);
  font-size: 0.9rem;
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--rule-strong);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
  margin-bottom: 14px;
}

.tool-panel input:focus,
.tool-panel select:focus {
  outline: none;
  border-color: var(--blue);
}

.tool-panel button {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--blue);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.15s;
}

.tool-panel button:hover { background: #003d8a; }

.tool-result {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 0.88rem;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 3px;
  display: none;
}

.tool-result.visible { display: block; }

/* ── FOOTER ──────────────────────────────────────────────── */
.site-footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 2px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.site-footer a { color: var(--ink-faint); }
.site-footer a:hover { color: var(--blue); }

/* ── DISCLAIMER ─────────────────────────────────────────── */
.disclaimer {
  font-size: 0.8rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--rule);
  padding-top: 20px;
  margin-top: 40px;
  font-style: italic;
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 600px) {
  h1 { font-size: 1.4rem; }
  .site-header { flex-direction: column; gap: 12px; }
  .site-header nav { gap: 14px; }
  .hub-grid { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
}