/* ============================================
   Lightjams LED Mapper — User Manual CSS
   ============================================ */

:root {
  --primary: #00aeef;
  --primary-dark: #008ec4;
  --secondary: #fefefe;
  --dark: #060606;
  --darker: #020202;
  --light: #f0f0f0;
  --gray: #777;
  --muted: #b8c1cc;
  --card-bg: rgba(20, 20, 20, 0.9);
  --card-bg-soft: rgba(16, 16, 16, 0.82);
  --table-head: rgba(22, 22, 22, 0.98);
  --quote-bg: rgba(0, 174, 239, 0.08);
  --code-bg: #11161d;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(0, 174, 239, 0.24);
  --transition: all 0.3s ease;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.45);
  --border-radius: 12px;
  --max-width: 100%;
}

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

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  padding: 0 0 40px;
  font-family: 'Inter', 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--light);
  background: var(--darker);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 1.8em;
  margin-bottom: 0.8rem;
  color: var(--secondary);
  scroll-margin-top: 24px;
}

h1 {
  font-size: clamp(1.9rem, 2.4vw, 2.5rem);
  padding-bottom: 0.55rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

h2 {
  font-size: clamp(1.45rem, 1.9vw, 1.9rem);
  color: var(--primary);
  padding-bottom: 0.3rem;
  border-bottom: 1px solid rgba(0, 174, 239, 0.22);
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.04rem;
}

p, ul, ol, table, blockquote {
  margin-top: 0;
  margin-bottom: 1.05rem;
}

p {
  color: var(--light);
  font-size: 1.02rem;
  font-weight: 300;
}

ul, ol {
  padding-left: 1.5rem;
}

li {
  margin: 0.35rem 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.manual-article h4 > img:first-child,
.manual-article p > img:first-child:last-child,
.manual-article p > img:first-child {
  object-fit: contain;
}

.manual-article > p:first-of-type {
  margin-bottom: 10px;
  text-align: center;
}

.manual-article > p:first-of-type img:first-child {
  display: inline-block;
  margin: 0 auto 12px;
}

.manual-article > p:has(> img:only-child) {
  padding: 14px;
  background: transparent;
}

.manual-article > p:has(> img:only-child) img {
  margin: 0 auto;
}

.manual-article .screenshot-frame.is-portrait img {
  width: 100% !important;
  max-width: none !important;
  max-height: min(88vh, 1400px) !important;
  height: auto !important;
  object-fit: contain;
}

.manual-article .screenshot-frame.is-small img {
  width: auto !important;
  max-width: min(100%, 620px) !important;
  max-height: min(72vh, 900px) !important;
  height: auto !important;
}

.manual-article strong {
  color: var(--secondary);
}

.manual-article sup {
  color: var(--muted);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

a:hover {
  color: var(--primary-dark);
}

a::after {
  content: '';
  position: absolute;
  bottom: 1px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--primary);
  transition: var(--transition);
}

a:hover::after {
  width: 100%;
}

.page-shell {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 20px 24px 56px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.toc-panel,
.manual-main {
  min-width: 0;
}

.toc-panel {
  position: sticky;
  top: 20px;
}

.toc-card,
.manual-main {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.toc-card {
  padding: 18px;
  backdrop-filter: blur(10px);
  max-height: calc(100vh - 40px);
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 174, 239, 0.35) transparent;
}

.toc-card::-webkit-scrollbar,
.table-scroll::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.toc-card::-webkit-scrollbar-thumb,
.table-scroll::-webkit-scrollbar-thumb {
  background: rgba(0, 174, 239, 0.28);
  border-radius: 999px;
}

.toc-card::-webkit-scrollbar-track,
.table-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.toc-title {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--secondary);
}

.toc-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.toc-nav li {
  margin: 0;
}

.toc-nav a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.toc-nav a::after {
  content: none;
}

.toc-nav a:hover {
  background: rgba(0, 174, 239, 0.08);
}

.toc-nav a.is-active {
  background: rgba(0, 174, 239, 0.14);
  color: var(--secondary);
}

.toc-nav .level-2 {
  padding-left: 24px;
  font-size: 0.9rem;
  color: var(--muted);
}

.toc-nav .level-3 {
  padding-left: 38px;
  font-size: 0.88rem;
  color: var(--gray);
}

.manual-main {
  padding: 36px;
  overflow: visible;
  background: var(--card-bg-soft);
}

.manual-article {
  width: 100%;
  max-width: none;
}

blockquote {
  margin-left: 0;
  padding: 16px 18px;
  border-left: 4px solid var(--primary);
  background: var(--quote-bg);
  color: var(--light);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.15rem 0.38rem;
  font-family: Consolas, 'Cascadia Mono', 'Courier New', monospace;
  font-size: 0.92em;
}

pre code {
  display: block;
  padding: 14px;
  overflow: auto;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  margin: 0 0 1.15rem;
  padding-bottom: 4px;
}

.table-scroll table {
  margin-bottom: 0;
  min-width: 640px;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: rgba(12, 12, 12, 0.88);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

thead tr,
table tr:first-child {
  background: var(--table-head);
}

tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

tbody tr:hover {
  background: rgba(0, 174, 239, 0.05);
}

th, td {
  padding: 12px 14px;
  border: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--secondary);
  font-weight: 600;
}

td {
  color: var(--light);
}

.align-left {
  text-align: left;
}

.align-center {
  text-align: center;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.footer {
  color: var(--gray);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.92rem;
  border-top: 1px solid var(--border);
}

.manual-article .feature-list {
  display: grid;
  gap: 8px;
  margin: 0 0 1.25rem;
}

.manual-article .feature-list-compact .fi {
  grid-template-columns: minmax(170px, 240px) minmax(0, 1fr);
  gap: 12px;
  padding: 10px 14px;
}

.manual-article .fi {
  display: grid;
  grid-template-columns: minmax(190px, 260px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.manual-article .ft {
  margin: 0;
  color: var(--secondary);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.35;
}

.manual-article .fb {
  min-width: 0;
}

.manual-article .fb > *:first-child {
  margin-top: 0;
}

.manual-article .fb > :last-child {
  margin-bottom: 0;
}

@media (max-width: 1080px) {
  .page-layout {
    grid-template-columns: 1fr;
  }

  .toc-panel {
    position: static;
  }
}

@media (max-width: 720px) {
  .page-shell {
    padding: 14px 12px 32px;
  }

  .manual-main {
    padding: 20px 16px;
  }

  .toc-card {
    max-height: none;
  }

  h1 {
    font-size: 1.85rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .table-scroll table {
    min-width: 560px;
  }

  .manual-article .fi,
  .manual-article .feature-list-compact .fi {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 10px 12px;
  }

  .manual-article .ft,
  .manual-article .fb {
    grid-column: 1;
  }

  .manual-article .fb {
    margin-top: 0;
  }
}