/* ── Catppuccin Mocha palette + Glassmorphism ── */
:root {
  --bg: #1e1e2e;
  --surface: #313244;
  --text: #cdd6f4;
  --accent: #00d4ff;
  --subtext: #a6adc8;
  --muted: #6c7086;
  --rose: #f38ba8;
  --green: #a6e3a1;
  --yellow: #f9e2af;
  --peach: #fab387;
  --lavender: #b4befe;
  --sidebar-width: 240px;
  color-scheme: dark;
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
  min-height: 100vh;
  overflow: hidden;
}

/* ── Glassmorphism classes ── */
.glass-card {
  background: rgba(49, 50, 68, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-panel {
  background: rgba(49, 50, 68, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.35);
}

.glass-nav {
  background: rgba(30, 30, 46, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.electric-border-hover {
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.electric-border-hover:hover {
  border-color: rgba(0, 212, 255, 0.35);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.15);
}

.gradient-x {
  background-image: linear-gradient(to right, rgba(0, 212, 255, 0.12), rgba(137, 180, 250, 0.12));
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 52px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.wordmark {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  user-select: none;
}

.wordmark .just {
  color: var(--subtext);
  font-weight: 400;
}

.wordmark .wiki {
  color: var(--accent);
}

/* ── App shell ── */
.app-shell {
  display: flex;
  position: fixed;
  top: 52px;
  left: 0;
  right: 0;
  bottom: 0;
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  overflow-y: auto;
  padding: 16px 0;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

#sidebar::-webkit-scrollbar {
  width: 4px;
}

#sidebar::-webkit-scrollbar-thumb {
  background: var(--muted);
  border-radius: 2px;
}

.app-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  margin: 2px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid transparent;
  font-size: 0.9rem;
  color: var(--subtext);
  user-select: none;
  appearance: none;
  -webkit-appearance: none;
  font-family: inherit;
  background: transparent;
  text-align: left;
  width: calc(100% - 16px);
}

.app-item:hover {
  background: rgba(49, 50, 68, 0.4);
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.1);
  color: var(--text);
}

.app-item.active {
  background: rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.3);
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  color: var(--text);
  font-weight: 500;
}

.app-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app-item .app-icon {
  margin-right: 10px;
  font-size: 1.1rem;
  opacity: 0.8;
}

.sidebar-group-header {
  padding: 14px 20px 4px 20px;
  margin: 4px 8px 2px 8px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
  user-select: none;
  pointer-events: none;
}

.sidebar-group-header:first-child {
  padding-top: 0;
  margin-top: 0;
}

/* ── Main content ── */
#content {
  flex: 1;
  overflow-y: auto;
  padding: 32px 40px;
  margin: 16px;
  border-radius: 12px;
}

#content::-webkit-scrollbar {
  width: 6px;
}

#content::-webkit-scrollbar-thumb {
  background: var(--muted);
  border-radius: 3px;
}

/* ── Markdown body ── */
.markdown-body {
  max-width: 800px;
  line-height: 1.7;
}

.markdown-body h1 {
  font-size: 2rem;
  color: var(--text);
  border-bottom: 1px solid var(--surface);
  padding-bottom: 0.3em;
  margin-bottom: 0.6em;
}

.markdown-body h2 {
  font-size: 1.5rem;
  color: var(--lavender);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

.markdown-body h3 {
  font-size: 1.2rem;
  color: var(--accent);
  margin-top: 1.2em;
  margin-bottom: 0.4em;
}

.markdown-body h4 {
  font-size: 1.05rem;
  color: var(--subtext);
  margin-top: 1em;
}

.markdown-body p {
  margin-bottom: 0.9em;
}

.markdown-body a {
  color: var(--accent);
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

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

.markdown-body em {
  color: var(--subtext);
}

.markdown-body code {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
}

.markdown-body :not(pre) > code {
  background: var(--surface);
  color: var(--peach);
  font-size: 0.85em;
  padding: 2px 6px;
  border-radius: 4px;
}

.markdown-body pre {
  background: var(--surface);
  border: 1px solid var(--muted);
  color: var(--text);
  padding: 1em;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.5;
  margin-bottom: 1em;
}

.markdown-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.markdown-body blockquote {
  border-left: 3px solid var(--lavender);
  color: var(--subtext);
  font-style: italic;
  padding-left: 1em;
  margin: 1em 0;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5em;
  margin-bottom: 0.9em;
}

.markdown-body li {
  margin-bottom: 0.3em;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  background: rgba(49, 50, 68, 0.3);
  border: 1px solid var(--surface);
  border-radius: 8px;
  overflow: hidden;
}

.markdown-body th {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.markdown-body td {
  padding: 8px 14px;
  border-top: 1px solid var(--surface);
  font-size: 0.9rem;
}

.markdown-body tr:hover td {
  background: rgba(0, 212, 255, 0.04);
}

.markdown-body hr {
  border: none;
  height: 1px;
  margin: 2em 0;
}

.markdown-body img {
  max-width: 100%;
  border-radius: 8px;
}

/* ── Notes section ── */
.notes-divider {
  background: linear-gradient(to right, rgba(0, 212, 255, 0.12), rgba(137, 180, 250, 0.12));
  height: 2px;
  margin: 2.5em 0 1.5em 0;
}


/* ── Empty state ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  text-align: center;
  padding: 40px;
}

.empty-state .icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state p {
  font-size: 1rem;
  max-width: 300px;
}

/* ── Error detail ── */
.empty-state .error-detail {
  font-size: 0.85rem;
  margin-top: 8px;
  color: var(--rose);
}

/* ── Mobile responsiveness ── */
@media (max-width: 768px) {
  :root { --sidebar-width: 100%; }
  .app-shell {
    flex-direction: column;
  }
  #sidebar {
    min-width: unset;
    height: auto;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .app-item {
    padding: 8px 16px;
    width: 100%;
  }
  .sidebar-group-header {
    padding: 10px 16px 2px 16px;
  }
  #content {
    margin: 8px;
    padding: 20px 16px;
  }
}