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

:root {
  --bg-primary: #1e1e2e;
  --bg-secondary: #181825;
  --bg-menu: #11111b;
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #6c7086;
  --accent: #89b4fa;
  --accent-hover: #74c7ec;
  --border: #313244;
  --hover: #313244;
  --success: #a6e3a1;
  --menu-width: 300px;
  --danger: #f38ba8;
}

.light {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-menu: #fafafa;
  --text-primary: #1e1e2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8888aa;
  --accent: #4a6cf7;
  --accent-hover: #3b5de7;
  --border: #e0e0e8;
  --hover: #eeeeff;
  --success: #2e8b57;
  --danger: #d34a4a;
}

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

#app {
  height: 100vh;
}

/* ── Hamburger toggle ── */

#menu-toggle {
  position: fixed;
  top: 16px;
  left: calc(var(--menu-width) + 12px);
  z-index: 100;
  width: 36px;
  height: 32px;
  background: var(--bg-menu);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 6px;
  transition: left 0.3s, background 0.15s;
}

#menu-toggle:hover {
  background: var(--hover);
}

#menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

#menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

#menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

#menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

#menu-toggle.closed {
  left: 12px;
}

#menu-toggle.closed span:nth-child(1) {
  transform: none;
}

#menu-toggle.closed span:nth-child(2) {
  opacity: 1;
}

#menu-toggle.closed span:nth-child(3) {
  transform: none;
}

/* ── Menu panel ── */

#menu {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--menu-width);
  height: 100vh;
  background: var(--bg-menu);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 90;
  transition: left 0.3s;
}

#menu.closed {
  left: calc(-1 * var(--menu-width));
}

#menu header {
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--border);
}

/* ── Project selector ── */

#project-selector {
  margin-bottom: 10px;
}

#project-select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
  appearance: auto;
}

#project-select:focus {
  border-color: var(--accent);
}

#project-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ── Search ── */

#search {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

#search:focus {
  border-color: var(--accent);
}

#file-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}

/* ── Folder headers (not clickable) ── */

.folder-header {
  padding: 10px 16px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  cursor: default;
  user-select: none;
  pointer-events: none;
}

/* ── File items (clickable) ── */

.file-item {
  display: flex;
  align-items: center;
  padding: 7px 16px 7px 20px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.file-item:hover {
  background: var(--hover);
  color: var(--text-primary);
}

.file-item.active {
  background: var(--hover);
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ── Footer ── */

#menu footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#status {
  color: var(--success);
}

#status.disconnected {
  color: var(--danger);
}

#status.loading {
  color: #f9e2af;
}

#footer-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

#lang-select {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

#lang-select:focus {
  border-color: var(--accent);
}

#lang-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

#theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background 0.15s;
}

#theme-toggle:hover {
  background: var(--hover);
}

#scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 150;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  display: none;
  transition: background 0.15s, color 0.15s;
}

#scroll-top:hover {
  background: var(--hover);
  color: var(--text-primary);
}

#scroll-top.visible {
  display: block;
}

/* ── Main content ── */

#content {
  height: 100vh;
  overflow-y: auto;
  padding: 40px 48px 40px calc(var(--menu-width) + 60px);
}

#welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-muted);
}

#welcome h2 {
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 600;
}

/* ── Toolbar ── */

#doc-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-bottom: 16px;
}

#share-wrapper {
  position: relative;
}

#share-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

#share-btn:hover {
  background: var(--hover);
  color: var(--text-primary);
}

#share-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
  display: none;
  z-index: 50;
  min-width: 150px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

#share-menu.open {
  display: block;
}

.share-option {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.share-option:hover {
  background: var(--hover);
  color: var(--text-primary);
}

#download-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

#download-btn:hover {
  background: var(--hover);
  color: var(--text-primary);
}

#doc-header {
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

#doc-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 8px;
}

#doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.meta-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  background: rgba(137, 180, 250, 0.15);
  color: var(--accent);
  border: 1px solid rgba(137, 180, 250, 0.3);
  cursor: pointer;
  transition: background 0.15s;
}

.meta-tag:hover {
  background: rgba(137, 180, 250, 0.3);
}

#tag-filter {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 6px 10px;
  background: rgba(137, 180, 250, 0.1);
  border: 1px solid rgba(137, 180, 250, 0.2);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--accent);
}

#tag-filter-label {
  color: var(--text-muted);
  font-size: 0.75rem;
}

#tag-filter-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 4px;
  line-height: 1;
  transition: color 0.15s;
  margin-left: auto;
}

#tag-filter-clear:hover {
  color: var(--danger);
}

.meta-date {
  color: var(--text-muted);
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
}

#doc-body {
  line-height: 1.8;
  font-size: 1rem;
  color: var(--text-primary);
}

#doc-body h1 { font-size: 1.75rem; margin: 24px 0 12px; color: var(--text-primary); }
#doc-body h2 { font-size: 1.5rem; margin: 24px 0 10px; color: var(--text-primary); }
#doc-body h3 { font-size: 1.25rem; margin: 20px 0 8px; color: var(--text-secondary); }
#doc-body h4 { font-size: 1.1rem; margin: 16px 0 6px; color: var(--text-secondary); }
#doc-body h5, #doc-body h6 { font-size: 1rem; margin: 12px 0 6px; color: var(--text-muted); }

#doc-body p {
  margin-bottom: 16px;
}

#doc-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

#doc-body a:hover {
  border-bottom-color: var(--accent);
}

#doc-body ul, #doc-body ol {
  margin: 8px 0 16px 24px;
}

#doc-body li {
  margin-bottom: 4px;
}

#doc-body blockquote {
  margin: 16px 0;
  padding: 8px 16px;
  border-left: 4px solid var(--accent);
  background: rgba(137, 180, 250, 0.05);
  border-radius: 0 6px 6px 0;
  color: var(--text-secondary);
}

#doc-body pre {
  margin: 16px 0;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

#doc-body code {
  font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.875rem;
}

#doc-body pre code {
  background: none;
  padding: 0;
}

#doc-body p code {
  background: rgba(137, 180, 250, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

#doc-body img {
  max-width: 100%;
  border-radius: 8px;
  margin: 16px 0;
}

#doc-body video {
  max-width: 100%;
  border-radius: 8px;
  margin: 16px 0;
  display: block;
}

#doc-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

#doc-body .content-image {
  margin: 16px 0;
}

#doc-body .content-image img {
  max-width: 100%;
  border-radius: 8px;
}

#doc-body .position-left {
  float: left;
  margin-right: 24px;
  max-width: 40%;
}

#doc-body .position-right {
  float: right;
  margin-left: 24px;
  max-width: 40%;
}

#doc-body .position-center {
  text-align: center;
}

/* ── Token dialog ── */

#token-dialog {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#token-dialog-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  width: 360px;
  max-width: 90vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

#token-dialog-box h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

#token-dialog-box p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

#token-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

#token-input:focus {
  border-color: var(--accent);
}

#token-dialog-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

#token-dialog-actions button {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: background 0.15s;
}

#token-cancel {
  background: transparent;
  color: var(--text-secondary);
}

#token-cancel:hover {
  background: var(--hover);
}

#token-submit {
  background: var(--accent);
  color: #11111b;
  border-color: var(--accent);
  font-weight: 600;
}

#token-submit:hover {
  background: var(--accent-hover);
}

#token-error {
  margin-top: 8px;
}

@media (max-width: 768px) {
  :root {
    --menu-width: 260px;
  }
  #content {
    padding: 24px 16px 24px 60px;
  }
}