/* ===================================================
   Jibo Revival Guide — Stylesheet
   Inspired by hacks-guide/Guide_3DS
   =================================================== */

:root {
  --bg:             #0d1117;
  --sidebar-bg:     #010409;
  --sidebar-hover:  #161b22;
  --sidebar-active: #1f2937;
  --surface:        #161b22;
  --border:         #30363d;
  --text:           #e6edf3;
  --text-muted:     #8b949e;
  --text-dim:       #6e7681;
  --accent:         #f0883e;
  --accent-hover:   #f5a05b;
  --link:           #58a6ff;
  --link-hover:     #79b8ff;
  --code-bg:        #161b22;
  --code-text:      #e6edf3;

  --note-bg:      #0b3a2c;
  --note-border:  #3fb950;
  --note-text:    #aff5b4;
  --note-title:   #3fb950;

  --info-bg:      #051d4d;
  --info-border:  #1f6feb;
  --info-text:    #cae8ff;
  --info-title:   #58a6ff;

  --warn-bg:      #2d1900;
  --warn-border:  #bb8009;
  --warn-text:    #f8d467;
  --warn-title:   #e3b341;

  --danger-bg:    #3d0c0c;
  --danger-border:#f85149;
  --danger-text:  #ffd7d5;
  --danger-title: #ff7b72;

  --sidebar-width: 270px;
  --header-height: 56px;
  --content-max:   820px;

  --radius: 6px;
  --radius-lg: 10px;

  font-size: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ══════════════════════════════════════
   SIDEBAR
══════════════════════════════════════ */
#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 200;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-logo-text {
  line-height: 1.2;
}

.sidebar-logo-text strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text);
}

.sidebar-logo-text span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.sidebar-logo:hover .sidebar-logo-text strong { color: var(--accent); }

nav.sidebar-nav {
  flex: 1;
  padding: 12px 0 24px;
  overflow-y: auto;
}

.nav-section-title {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 16px 20px 4px;
}

.nav-section-title:not(:first-child) {
  padding-top: 24px;
}

.sidebar-nav a {
  display: block;
  padding: 6px 20px 6px 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.sidebar-nav a.active {
  background: var(--sidebar-active);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.sidebar-nav a.nav-sub {
  padding-left: 36px;
  font-size: 0.82rem;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.sidebar-footer a {
  color: var(--link);
  text-decoration: none;
}

.sidebar-footer a:hover { text-decoration: underline; }

/* ══════════════════════════════════════
   HEADER (mobile + desktop)
══════════════════════════════════════ */
#header {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  z-index: 100;
  gap: 12px;
}

#menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 1rem;
  line-height: 1;
}

.header-breadcrumb {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

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

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

.header-breadcrumb .sep { color: var(--text-dim); }

.header-breadcrumb .current { color: var(--text); }

.header-right {
  margin-left: auto;
  display: flex;
  gap: 10px;
}

.header-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: color 0.15s, border-color 0.15s;
}

.header-link:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* ══════════════════════════════════════
   SITE-WIDE DISCLAIMER BANNER
══════════════════════════════════════ */
.site-disclaimer {
  background: var(--warn-bg);
  border-bottom: 2px solid var(--warn-border);
  color: var(--warn-text);
  font-size: 0.82rem;
  line-height: 1.5;
  padding: 10px 48px;
}

.site-disclaimer strong { color: var(--warn-title); }
.site-disclaimer em { color: var(--warn-text); font-style: normal; opacity: 0.85; }

@media (max-width: 900px) {
  .site-disclaimer { padding: 10px 20px; }
}

/* ══════════════════════════════════════
   MAIN LAYOUT
══════════════════════════════════════ */
#content-wrapper {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  padding: 40px 48px;
  max-width: calc(var(--content-max) + 96px);
}

/* ══════════════════════════════════════
   TYPOGRAPHY
══════════════════════════════════════ */
h1, h2, h3, h4 {
  color: var(--text);
  line-height: 1.3;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
}

h1 { font-size: 2rem; margin-top: 0; border-bottom: 1px solid var(--border); padding-bottom: 0.4em; }
h2 { font-size: 1.45rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; color: var(--text-muted); }

p { margin-bottom: 1em; }

a {
  color: var(--link);
  text-decoration: none;
}

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

ul, ol {
  padding-left: 1.6em;
  margin-bottom: 1em;
}

li { margin-bottom: 0.3em; }

li > ul, li > ol { margin-top: 0.3em; margin-bottom: 0.3em; }

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

em { color: var(--text-muted); font-style: italic; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* ══════════════════════════════════════
   CODE
══════════════════════════════════════ */
code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', Menlo, monospace;
  font-size: 0.875em;
  color: #e6edf3;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1em 0;
  position: relative;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--code-text);
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius);
  padding: 3px 10px;
  font-size: 0.72rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  font-family: inherit;
}

.copy-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.copy-btn.copied {
  color: var(--note-title);
  border-color: var(--note-title);
}

/* Shell prompt style */
.shell-block {
  background: #010409;
  border-color: #30363d;
}

.shell-block code .prompt { color: var(--accent); user-select: none; }
.shell-block code .comment { color: var(--text-dim); }

/* ══════════════════════════════════════
   CALLOUT BOXES
══════════════════════════════════════ */
.callout {
  border-radius: var(--radius);
  border-left: 4px solid;
  padding: 14px 18px;
  margin: 1.2em 0;
}

.callout-title {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.callout p:last-child { margin-bottom: 0; }
.callout ul:last-child { margin-bottom: 0; }

.callout.note   { background: var(--note-bg);   border-color: var(--note-border);   color: var(--note-text); }
.callout.info   { background: var(--info-bg);   border-color: var(--info-border);   color: var(--info-text); }
.callout.warn   { background: var(--warn-bg);   border-color: var(--warn-border);   color: var(--warn-text); }
.callout.danger { background: var(--danger-bg); border-color: var(--danger-border); color: var(--danger-text); }

.callout.note   .callout-title { color: var(--note-title); }
.callout.info   .callout-title { color: var(--info-title); }
.callout.warn   .callout-title { color: var(--warn-title); }
.callout.danger .callout-title { color: var(--danger-title); }

.callout code {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
}

/* ══════════════════════════════════════
   STEPS
══════════════════════════════════════ */
.steps {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
  margin: 1.5em 0;
}

.steps > li {
  counter-increment: step-counter;
  padding: 16px 20px 16px 64px;
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  background: var(--surface);
}

.steps > li::before {
  content: counter(step-counter);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps > li > *:last-child { margin-bottom: 0; }

/* ══════════════════════════════════════
   TABLES
══════════════════════════════════════ */
.table-wrap { overflow-x: auto; margin: 1.2em 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
}

td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}

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

tr:hover td { background: var(--surface); color: var(--text); }

/* ══════════════════════════════════════
   PAGE NAVIGATION (prev/next)
══════════════════════════════════════ */
.page-nav {
  display: flex;
  gap: 16px;
  margin: 3em 0 1em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
}

.page-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-muted);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
  background: var(--surface);
}

.page-nav a:hover {
  border-color: var(--accent);
  color: var(--text);
  text-decoration: none;
}

.page-nav a.next { text-align: right; }

.page-nav .nav-dir {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.page-nav .nav-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── Guide images ── */
.guide-img {
  display: block;
  max-width: 100%;
  width: 480px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin: 1.2em 0;
}

.guide-img-wrap {
  margin: 1.4em 0;
}

.guide-img-caption {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 6px;
}

/* ══════════════════════════════════════
   LANDING PAGE HERO
══════════════════════════════════════ */
.hero {
  text-align: center;
  padding: 3em 0 2em;
}

.hero-eye {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 40%, #fff5e0 0%, var(--accent) 35%, #c0551a 70%, #3d1a00 100%);
  margin: 0 auto 24px;
  box-shadow: 0 0 40px rgba(240, 136, 62, 0.4), 0 0 80px rgba(240, 136, 62, 0.15);
  animation: pulse-eye 3s ease-in-out infinite;
}

@keyframes pulse-eye {
  0%, 100% { box-shadow: 0 0 40px rgba(240, 136, 62, 0.4), 0 0 80px rgba(240, 136, 62, 0.15); }
  50%       { box-shadow: 0 0 60px rgba(240, 136, 62, 0.6), 0 0 120px rgba(240, 136, 62, 0.25); }
}

.hero h1 {
  font-size: 2.6rem;
  border: none;
  padding: 0;
  margin-bottom: 0.3em;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 1.8em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: var(--accent-hover);
  text-decoration: none;
  color: #000;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(240,136,62,0.35);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Route cards */
.route-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 2em 0;
}

.route-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
}

.route-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--text);
}

.route-card-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.badge-recommended {
  background: rgba(63, 185, 80, 0.2);
  color: var(--note-title);
  border: 1px solid var(--note-border);
}

.badge-advanced {
  background: rgba(240, 136, 62, 0.15);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.route-card h3 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--text);
}

.route-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  flex: 1;
}

.route-card .route-cta {
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── FAQ accordion ── */
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  background: var(--surface);
  overflow: hidden;
}

.faq summary {
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--text-dim);
  flex-shrink: 0;
}

.faq details[open] summary::after { content: '−'; color: var(--accent); }

.faq details[open] summary { color: var(--accent); }

.faq .faq-body {
  padding: 0 18px 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.faq .faq-body p:last-child { margin-bottom: 0; }

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
  margin-left: 0;
  border-top: 1px solid var(--border);
  padding: 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

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

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

.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

/* ══════════════════════════════════════
   MOBILE OVERLAY
══════════════════════════════════════ */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 150;
}

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 900px) {
  #sidebar {
    transform: translateX(-100%);
  }

  #sidebar.open {
    transform: translateX(0);
  }

  .overlay.visible {
    display: block;
  }

  #content-wrapper {
    margin-left: 0;
  }

  #header {
    left: 0;
  }

  #menu-toggle {
    display: block;
  }

  main {
    padding: 28px 20px;
  }

  footer {
    padding: 20px;
  }

  .route-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 { font-size: 2rem; }

  .page-nav { flex-direction: column; }
}

@media (max-width: 480px) {
  main { padding: 20px 16px; }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.25rem; }
  pre { padding: 12px 14px; font-size: 0.8rem; }
}

/* ── Misc utility ── */
.tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0.5em 0 1.5em;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s;
}

.page-progress {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0.5em;
}