/* ==========================================================================
   King in the Mountain Guide — Master Shared Stylesheet
   Version: 2026-09-22
   Visual Contract: INHERIT_HOME Baseline
   ========================================================================== */

:root {
  /* Color Palette — Deep Mountain Slate & Warm Dwarf Gold */
  --color-bg-base: #151319;
  --color-bg-surface: #201c26;
  --color-bg-surface-elevated: #292432;
  --color-bg-card: #25202c;
  --color-border: #3c3447;
  --color-border-subtle: #2e2837;
  
  --color-accent-gold: #e5a93b;
  --color-accent-gold-hover: #f3be58;
  --color-accent-copper: #d47036;
  --color-accent-torch: #ff9838;
  
  --color-text-main: #f2eef6;
  --color-text-muted: #b3a9c0;
  --color-text-dim: #847992;
  --color-link: #e5a93b;
  --color-link-hover: #f3be58;
  
  --color-badge-bg: rgba(229, 169, 59, 0.12);
  --color-badge-border: rgba(229, 169, 59, 0.35);
  --color-callout-bg: rgba(41, 36, 50, 0.85);
  --color-callout-border: #d47036;

  /* Typography */
  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  --line-height-body: 1.7;
  --line-height-heading: 1.25;
  --reading-measure: 68ch;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.25rem;
  --space-2xl: 3.5rem;

  /* Layout */
  --container-max-width: 1140px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-standard: 0.2s ease-in-out;
}

/* CSS Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  font-family: var(--font-family-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: var(--line-height-body);
  background-color: var(--color-bg-base);
  background-image: radial-gradient(circle at 50% 0%, rgba(229, 169, 59, 0.05) 0%, transparent 60%);
  background-repeat: no-repeat;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -999px;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent-gold);
  color: #121016;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
}

/* Header & Navigation Shell */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(21, 19, 25, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-main);
}

.site-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  image-rendering: pixelated;
  flex-shrink: 0;
}

.site-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-accent-gold);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-standard);
  padding: 0.35rem 0.25rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-accent-gold);
}

/* Main Container & Layout */
.main-content {
  flex: 1;
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
  padding: var(--space-xl) 1.25rem var(--space-2xl);
}

/* Article & Reading Measure Constraints */
.article-container {
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-2xl);
}

.article-container p,
.article-container ul,
.article-container ol,
.article-container .callout {
  max-width: 75ch;
}

.prose-column {
  max-width: var(--reading-measure);
}

.centered-column {
  margin-left: auto;
  margin-right: auto;
}

/* Breadcrumb Navigation */
.breadcrumbs {
  margin-bottom: var(--space-md);
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  margin-bottom: 0;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--color-border);
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-accent-gold);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-accent-gold);
  font-weight: 600;
}

/* Article Header & Meta */
.article-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-subtle);
}

.article-header h1 {
  margin-top: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-top: var(--space-sm);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
}

.article-meta-divider {
  color: var(--color-border);
}

/* Article Next Action Card */
.article-next-action {
  margin-top: var(--space-2xl);
  padding: var(--space-lg);
  background: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.article-next-action h3 {
  margin-top: 0;
  margin-bottom: var(--space-xs);
}

.article-next-action p {
  margin-bottom: var(--space-md);
}

/* Blockquotes */
blockquote {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-callout-bg);
  border-left: 4px solid var(--color-callout-border);
  margin: var(--space-lg) 0;
  font-style: normal;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  color: var(--color-text-main);
  line-height: var(--line-height-heading);
  font-weight: 800;
}

h1 {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 1.55rem;
  letter-spacing: -0.015em;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h3 {
  font-size: 1.2rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-accent-gold);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-main);
}

ul, ol {
  margin-bottom: var(--space-md);
  padding-left: 1.5rem;
  color: var(--color-text-main);
}

li {
  margin-bottom: 0.4rem;
}

strong {
  color: #ffffff;
  font-weight: 700;
}

/* Links & External Indicator */
a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-standard);
}

a:hover {
  color: var(--color-link-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* External Link Component (00B §4B.1) */
.external-link {
  display: inline;
  word-break: break-word;
}

.external-icon {
  display: inline-block;
  font-size: 0.85em;
  margin-left: 0.2em;
  line-height: 1;
  color: var(--color-accent-copper);
}

.btn.external-link {
  display: inline-flex;
  align-items: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Citation markers */
.cite-ref {
  font-size: 0.78em;
  font-weight: 700;
  vertical-align: super;
  text-decoration: none;
  padding: 0 0.15em;
  color: var(--color-accent-gold);
}
.cite-ref:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.98rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-standard);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent-gold);
  color: #121016;
  border-color: var(--color-accent-gold);
}

.btn-primary:hover {
  background: var(--color-accent-gold-hover);
  border-color: var(--color-accent-gold-hover);
  color: #121016;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-bg-surface-elevated);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
  color: #ffffff;
}

/* Badges & Meta Chips */
.badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--color-badge-bg);
  border: 1px solid var(--color-badge-border);
  color: var(--color-accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-neutral {
  background: rgba(179, 169, 192, 0.1);
  border-color: rgba(179, 169, 192, 0.25);
  color: var(--color-text-muted);
}

/* Hero Section */
.hero-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-xl);
  align-items: center;
}

.hero-text {
  max-width: var(--reading-measure);
}

.hero-image-wrap {
  display: flex;
  justify-content: center;
}

.hero-image {
  width: 100%;
  max-width: 340px;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* Play Now Delivery / In-Browser Game Station (00B EMBED_FIRST) */
.play-station {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-2xl) 0;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.play-station-header {
  margin-bottom: var(--space-md);
}

.game-player-container {
  position: relative;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  background-color: #0b090e;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.7);
}

.game-player-container:fullscreen {
  max-width: none;
  width: 100vw;
  height: 100vh;
  border-radius: 0;
  border: none;
}

.game-player-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg);
  background-image: url('../assets/mountain-hall-overview.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  cursor: pointer;
  z-index: 2;
  transition: opacity var(--transition-standard);
}

.game-player-placeholder-static {
  cursor: default;
}

.game-player-fallback {
  min-height: 320px;
}

.game-player-fallback .external-link {
  text-decoration: none;
}

.game-player-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(21, 19, 25, 0.82) 0%, rgba(15, 13, 18, 0.96) 100%);
}

.placeholder-content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: 580px;
}

.placeholder-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
}

.btn-play-launch {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.95rem 2.2rem;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--color-accent-gold);
  color: #121016;
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(229, 169, 59, 0.45);
  cursor: pointer;
  transition: all var(--transition-standard);
}

.btn-play-launch:hover,
.btn-play-launch:focus-visible {
  background: var(--color-accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(229, 169, 59, 0.65);
}

.placeholder-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.game-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: #000;
}

/* Player Toolbar & Actions */
.game-toolbar {
  max-width: 960px;
  margin: 0.75rem auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
}

.game-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--color-bg-surface-elevated);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-standard);
}

.toolbar-btn:hover,
.toolbar-btn:focus-visible {
  background: var(--color-border);
  color: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

/* Quick Control Hints Strip */
.play-quick-controls {
  max-width: 960px;
  margin: 0.75rem auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.5rem;
}

.control-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(32, 28, 38, 0.7);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.control-pill kbd {
  background: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 0.15rem 0.4rem;
  font-size: 0.78rem;
  font-family: var(--font-family-mono);
  color: var(--color-accent-gold);
}

/* Content Figures & Captions */
figure {
  margin: var(--space-lg) 0;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

figure img {
  width: 100%;
  height: auto;
  display: block;
}

figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-subtle);
  background: rgba(18, 16, 22, 0.6);
  font-style: italic;
}

/* Tables with Mobile Overflow */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: var(--space-lg) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th, td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}

th {
  background: var(--color-bg-surface-elevated);
  color: var(--color-accent-gold);
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(229, 169, 59, 0.03);
}

/* Cards & Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.feature-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

/* Callout Boxes */
.callout {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-callout-bg);
  border-left: 4px solid var(--color-callout-border);
  margin: var(--space-lg) 0;
}

.callout-title {
  font-weight: 700;
  color: var(--color-accent-copper);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Sources & Reference Section */
.sources-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.sources-list {
  list-style: none;
  padding-left: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.sources-list li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
  line-height: 1.6;
}

.sources-list .source-num {
  flex-shrink: 0;
  font-weight: 700;
  color: var(--color-accent-gold);
  min-width: 1.8rem;
}

.sources-list .source-content {
  flex: 1;
  min-width: 0;
}

/* Footer Shell */
.site-footer {
  background: #110e15;
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-2xl) 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: var(--space-md);
}

.footer-disclaimer {
  max-width: var(--reading-measure);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-dim);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
}

.footer-links a {
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-accent-gold);
}

/* Branded 404 shell; no commercial or analytics dependencies. */
.error-body { min-height: 100vh; }
.error-main { min-height: 100vh; display: grid; place-items: center; padding: 1.25rem; }
.error-card { width: min(42rem, 100%); padding: var(--space-xl); background: var(--color-bg-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.error-card p { max-width: var(--reading-measure); }

/* Responsive Media Queries */
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-image-wrap {
    order: -1;
    margin-bottom: var(--space-md);
  }
  
  .hero-image {
    max-width: 260px;
  }
  
  h1 {
    font-size: 1.85rem;
  }
  
  h2 {
    font-size: 1.35rem;
  }
}

@media (max-width: 600px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .site-nav ul {
    gap: 0.75rem;
    flex-wrap: wrap;
  }
  
  .hero-card {
    padding: var(--space-lg);
  }
  
  .article-container {
    padding: var(--space-lg) 1rem;
    border-radius: var(--radius-md);
  }
  
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
}