/* BlazeBooks – dark theme derived from app icon palette
   Background:  deep charcoal  #111118
   Surface:     elevated dark   #1c1c26
   Border:      subtle line     #2a2a38
   Accent fire: orange          #FF6B1A
   Accent beam: electric blue   #4FC3F7
   Text:        off-white       #e8e8f0
   Muted text:  grey-blue       #8888a8
*/

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

:root {
  --bg:          #111118;
  --surface:     #1c1c26;
  --border:      #2a2a38;
  --fire:        #FF6B1A;
  --fire-dim:    #c74e0f;
  --beam:        #4FC3F7;
  --text:        #e8e8f0;
  --muted:       #8888a8;
  --radius:      10px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

/* ── Layout ── */

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header img.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 6px;
}

.site-header .app-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.site-header .app-name span {
  color: var(--fire);
}

.layout {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
  gap: 48px;
  align-items: flex-start;
}

/* ── Sidebar TOC ── */

.sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: 88px;
}

.sidebar nav {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.sidebar nav h2 {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 14px;
}

.sidebar nav ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar nav ol li a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 5px 10px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}

.sidebar nav ol li a:hover {
  background: var(--border);
  color: var(--text);
}

/* ── Main Content ── */

main {
  flex: 1;
  min-width: 0;
}

main > h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 8px;
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

section {
  margin-bottom: 56px;
}

section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--fire);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

section h2 .icon {
  color: var(--fire);
  font-style: normal;
}

section h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--beam);
  margin: 24px 0 10px;
}

section p {
  color: var(--text);
  margin-bottom: 14px;
}

section ul,
section ol {
  padding-left: 20px;
  margin-bottom: 14px;
}

section li {
  margin-bottom: 6px;
}

/* ── Screenshot placeholders ── */

.screenshot {
  display: block;
  width: 100%;
  max-width: 560px;
  aspect-ratio: 9 / 18;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.screenshot.landscape {
  aspect-ratio: 16 / 9;
  max-width: 680px;
}

.screenshot svg {
  opacity: 0.35;
}

.screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

/* ── Tip box ── */

.tip {
  background: color-mix(in srgb, var(--fire) 8%, var(--surface));
  border-left: 3px solid var(--fire);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 12px 16px;
  margin: 16px 0;
  font-size: 0.9rem;
  color: var(--text);
}

.tip strong {
  color: var(--fire);
}

/* ── Inline code ── */

code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.875em;
  color: var(--beam);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

/* ── Keyboard shortcut / badge ── */

.badge {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 8px;
  font-size: 0.82rem;
  color: var(--text);
  font-weight: 500;
}

/* ── Footer ── */

.site-footer {
  text-align: center;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--beam);
  text-decoration: none;
}

/* ── Responsive ── */

@media (max-width: 720px) {
  .layout {
    flex-direction: column;
    gap: 32px;
    padding: 24px 16px;
  }

  .sidebar {
    flex: unset;
    width: 100%;
    position: static;
  }

  .screenshot {
    max-width: 100%;
  }

  main > h1 {
    font-size: 1.6rem;
  }
}