/* ===== QuickPOS User Guide — Styles ===== */

:root {
  --bg:       hsl(225, 22%, 7%);
  --bg2:      hsl(225, 20%, 10%);
  --card:     hsl(225, 18%, 13%);
  --card2:    hsl(225, 16%, 16%);
  --border:   hsl(225, 14%, 19%);
  --border2:  hsl(225, 14%, 25%);

  --fg:       hsl(45, 25%, 94%);
  --fg2:      hsl(225, 10%, 65%);
  --fg3:      hsl(225, 10%, 42%);

  --primary:      hsl(32, 100%, 58%);
  --primary-dim:  hsla(32, 100%, 58%, 0.1);
  --primary-glow: hsla(32, 100%, 58%, 0.2);
  --green:    hsl(152, 68%, 46%);
  --green-dim:hsla(152, 68%, 46%, 0.12);
  --blue:     hsl(210, 90%, 60%);
  --blue-dim: hsla(210, 90%, 60%, 0.12);
  --red:      hsl(4, 80%, 58%);
  --red-dim:  hsla(4, 80%, 58%, 0.12);

  --sidebar-w: 260px;
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'DM Mono', monospace;

  --radius:    8px;
  --radius-lg: 14px;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  font-size: 15px;
  line-height: 1.7;
  display: flex;
  min-height: 100vh;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 99px; }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px var(--primary-glow);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.3px;
}

.brand-sub {
  font-size: 11px;
  color: var(--fg3);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--fg3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 14px 20px 4px;
}

.nav-link {
  display: block;
  padding: 7px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.12s;
}

.nav-link:hover {
  color: var(--fg);
  background: var(--card);
  border-left-color: var(--border2);
}

.nav-link.active {
  color: var(--primary);
  background: var(--primary-dim);
  border-left-color: var(--primary);
  font-weight: 600;
}

/* ===== Content ===== */
.content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.page-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 48px 60px 40px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.page-header-inner { position: relative; max-width: 740px; }

.breadcrumb {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.15;
  margin-bottom: 14px;
}

.page-header .lead {
  font-size: 16px;
  color: var(--fg2);
  line-height: 1.65;
  max-width: 640px;
}

.page-body {
  flex: 1;
  padding: 48px 60px;
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* ===== Feature grid on home page ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  display: block;
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -4px var(--primary-glow);
}

.feature-icon { font-size: 28px; margin-bottom: 12px; }

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 13px;
  color: var(--fg2);
  line-height: 1.55;
}

/* ===== Sections ===== */
.section { display: flex; flex-direction: column; gap: 14px; }

.section h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.section h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  margin-top: 8px;
}

.section p {
  color: var(--fg2);
  line-height: 1.75;
}

.section p a,
.page-body a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid var(--primary-dim);
}

.section p a:hover,
.page-body a:hover { border-bottom-color: var(--primary); }

/* ===== Two column list ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--fg2);
}

.feature-list .check { color: var(--green); font-size: 13px; flex-shrink: 0; margin-top: 2px; }

/* ===== Callouts ===== */
.callout {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid;
}

.callout-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.callout strong { font-weight: 600; }

.callout-tip { background: var(--blue-dim); border-color: var(--blue); color: var(--fg2); }
.callout-warning { background: var(--primary-dim); border-color: var(--primary); color: var(--fg2); }
.callout-danger { background: var(--red-dim); border-color: var(--red); color: var(--fg2); }
.callout-success { background: var(--green-dim); border-color: var(--green); color: var(--fg2); }

/* ===== Step lists ===== */
.steps { display: flex; flex-direction: column; gap: 16px; }

.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: hsl(225, 22%, 8%);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-body { flex: 1; }
.step-body strong { display: block; font-size: 15px; margin-bottom: 4px; }
.step-body p { font-size: 14px; color: var(--fg2); margin: 0; }

/* ===== Tables ===== */
.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.guide-table th {
  text-align: left;
  padding: 10px 14px;
  background: var(--card2);
  border: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg3);
}

.guide-table td {
  padding: 11px 14px;
  border: 1px solid var(--border);
  color: var(--fg2);
  vertical-align: top;
}

.guide-table tr:nth-child(even) td { background: var(--card); }
.guide-table tr:hover td { background: var(--card2); }

/* ===== Code / kbd ===== */
kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--card2);
  border: 1px solid var(--border2);
  border-radius: 5px;
  box-shadow: 0 2px 0 var(--border);
  color: var(--fg);
}

code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--card2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--primary);
}

/* ===== Screenshot placeholder ===== */
.screenshot {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  color: var(--fg3);
  font-size: 13px;
}

/* ===== Page footer ===== */
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

.page-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  padding: 14px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s;
  max-width: 220px;
}

.page-nav a:hover { border-color: var(--primary); }
.page-nav .nav-direction { font-size: 11px; color: var(--fg3); text-transform: uppercase; letter-spacing: 0.07em; }
.page-nav .nav-title { font-size: 14px; font-weight: 600; color: var(--fg); }
.page-nav .prev { text-align: left; }
.page-nav .next { text-align: right; margin-left: auto; }

/* ===== Responsive ===== */
@media (max-width: 1000px) {
  .page-header { padding: 36px 32px 28px; }
  .page-body { padding: 36px 32px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
}

/* ===== Mobile burger menu ===== */
.mobile-bar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 200;
}
.mobile-bar-brand {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-size: 16px; font-weight: 700;
  color: var(--fg);
}
.mobile-bar-brand .brand-icon {
  width: 28px; height: 28px; border-radius: 7px;
  font-size: 14px;
}
.burger-btn {
  background: none; border: none; color: var(--fg2);
  cursor: pointer; padding: 6px;
  display: flex; flex-direction: column; gap: 4px;
}
.burger-btn span {
  display: block; width: 20px; height: 2px;
  background: currentColor; border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 299;
}
.sidebar-overlay.open { display: block; }

@media (max-width: 700px) {
  .mobile-bar { display: flex; }

  .content { margin-top: 52px; }

  /* Sidebar becomes a slide-in drawer */
  .sidebar {
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 300;
    transform: translateX(-100%);
    transition: transform .25s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,.4);
  }
  .sidebar.open { transform: translateX(0); }

  .page-header { padding: 28px 20px 22px; }
  .page-header h1 { font-size: 26px; }
  .page-body { padding: 28px 20px; gap: 36px; }
  .feature-grid { grid-template-columns: 1fr; }
}

/* ===== New page elements ===== */
.code-block {
  font-family: var(--font-mono); font-size: 14px;
  background: var(--card); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 12px 16px;
  color: var(--primary); margin: 12px 0; word-break: break-all;
}

.info-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px; margin-top: 12px;
}
.info-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 16px 18px;
}
.info-card-title { font-weight: 700; font-size: 14px; margin-bottom: 8px; }

.step-list { list-style: none; padding: 0; margin-top: 8px; counter-reset: steps; }
.step-list li {
  counter-increment: steps; padding: 10px 0 10px 44px; position: relative;
  border-bottom: 1px solid var(--border);
}
.step-list li:last-child { border-bottom: none; }
.step-list li::before {
  content: counter(steps);
  position: absolute; left: 0; top: 10px;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary-dim); border: 1px solid var(--primary);
  color: var(--primary); font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* ===== Guide footer ===== */
.guide-footer {
  border-top: 1px solid var(--border);
  padding: 28px 40px;
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.guide-footer-copy {
  font-size: 12px;
  color: var(--fg3);
  line-height: 1.6;
}
.guide-footer-copy strong { color: var(--fg2); font-weight: 600; }
.guide-footer-links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.guide-footer-links a {
  font-size: 12px;
  color: var(--fg3);
  transition: color .2s;
}
.guide-footer-links a:hover { color: var(--primary); }
@media (max-width: 600px) {
  .guide-footer { flex-direction: column; align-items: flex-start; padding: 20px; }
}