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

:root {
  --bg: #0c0a08;
  --bg-surface: #141210;
  --bg-hover: #1e1a16;
  --border: #2a2420;
  --text: #e8e0d8;
  --text-dim: #9a8e82;
  --text-faint: #5e5448;
  --accent: #d4883a;
  --accent-glow: rgba(212, 136, 58, 0.25);
  --warm: #c06a2a;
  --warm-glow: rgba(192, 106, 42, 0.15);
  --gold: #e8b04a;
  --pulse: rgba(212, 136, 58, 0.08);
  --radius: 8px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
  --drawer-width: 380px;
}

/* ─── Light Theme ─────────────────────────────────── */

[data-theme="light"] {
  --bg: #f5f0eb;
  --bg-surface: #ffffff;
  --bg-hover: #ede6df;
  --border: #d8d0c8;
  --text: #2a2420;
  --text-dim: #6e6258;
  --text-faint: #9a8e82;
  --accent: #c06a2a;
  --accent-glow: rgba(192, 106, 42, 0.15);
  --warm: #a85820;
  --warm-glow: rgba(168, 88, 32, 0.1);
  --gold: #c08a30;
  --pulse: rgba(192, 106, 42, 0.06);
}

[data-theme="light"] #header {
  background: linear-gradient(180deg, #fff 0%, #f8f4f0 100%);
  border-bottom-color: var(--border);
}

[data-theme="light"] #header::after {
  background: linear-gradient(90deg, transparent, var(--warm) 30%, var(--gold) 70%, transparent);
  opacity: 0.3;
}

[data-theme="light"] .header-left h1 {
  background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="light"] #sidebar {
  background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}

[data-theme="light"] #sidebar::after {
  background: linear-gradient(180deg, transparent, var(--warm) 50%, transparent);
  opacity: 0.1;
}

[data-theme="light"] .floating-card {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .detail-drawer {
  background: #fff;
}

[data-theme="light"] .search-dropdown {
  background: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .modal-content {
  background: #fff;
}

[data-theme="light"] .input {
  background: var(--bg);
  border-color: var(--border);
}

[data-theme="light"] .node-tooltip {
  background: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  height: 100vh;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ─── Header ──────────────────────────────────────── */

#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background: linear-gradient(180deg, #16120e 0%, var(--bg-surface) 100%);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  position: relative;
}

/* Subtle glow line under header */
#header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--warm) 30%, var(--gold) 70%, transparent);
  opacity: 0.4;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.header-left h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  font-size: 11px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  background: var(--pulse);
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.credit {
  font-size: 10px;
  color: var(--text-faint);
  letter-spacing: 0.3px;
}

.credit a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-dim-toggle {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 12px;
  min-width: 40px;
  text-align: center;
  color: var(--gold);
  border-color: var(--border);
  background: var(--bg);
  letter-spacing: 0.5px;
  transition: all 0.2s;
}

.btn-dim-toggle:hover {
  border-color: var(--gold);
  box-shadow: 0 0 8px var(--warm-glow);
  background: var(--bg);
}

.header-search {
  position: relative;
}

.header-search .input {
  width: 260px;
  padding: 6px 12px;
  font-size: 13px;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.header-search .input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.header-search .search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
}

/* ─── Category Strip ──────────────────────────────── */

#category-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
}

#category-strip:empty {
  display: none;
}

.strip-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-weight: 600;
  margin-right: 4px;
  white-space: nowrap;
}

.cat-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all 0.15s;
  user-select: none;
}

.cat-pill .cat-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 6px currentColor;
}

.cat-pill .cat-count {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
}

.cat-pill:hover {
  background: var(--bg-hover);
}

.cat-pill.active {
  border-color: currentColor;
  background: currentColor;
}

.cat-pill.active span {
  color: var(--bg) !important;
}

.cat-pill.active .cat-dot {
  background: var(--bg) !important;
}

/* ─── Main Layout ─────────────────────────────────── */

#main {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ─── Sidebar ─────────────────────────────────────── */

#sidebar {
  width: 220px;
  min-width: 220px;
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg) 100%);
  border-right: 1px solid var(--border);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  z-index: 5;
  position: relative;
}

/* Subtle vertical glow on sidebar right edge */
#sidebar::after {
  content: "";
  position: absolute;
  top: 10%;
  bottom: 10%;
  right: -1px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--warm) 50%, transparent);
  opacity: 0.15;
}

.sidebar-section h3,
.sidebar-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-faint);
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 600;
}

.search-section {
  position: relative;
}

#tag-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tag-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.15s;
}

.tag-item:hover {
  background: var(--bg-hover);
}

.tag-item.active {
  background: var(--accent-glow);
  color: var(--accent);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.footer-name {
  font-size: 10px;
  color: var(--text-faint);
  margin-bottom: 6px;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}

.footer-links {
  display: flex;
  gap: 10px;
}

.footer-links a {
  font-size: 10px;
  color: var(--text-faint);
  text-decoration: none;
  font-family: var(--font-mono);
  transition: color 0.2s, text-shadow 0.2s;
  padding: 4px 2px;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--gold);
  text-shadow: 0 0 8px var(--warm-glow);
}

.tag-count {
  font-size: 11px;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* ─── Search Dropdown ─────────────────────────────── */

.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  max-height: 320px;
  overflow-y: auto;
  z-index: 20;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.search-dropdown.hidden {
  display: none;
}

.search-result {
  padding: 8px 10px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}

.search-result:last-child {
  border-bottom: none;
}

.search-result:hover {
  background: var(--bg-hover);
}

.search-result.active {
  background: var(--accent-glow);
  border-left: 2px solid var(--accent);
}

.search-result .sr-author {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

.search-result .sr-text {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
  line-height: 1.3;
}

.search-no-results {
  padding: 12px 10px;
  font-size: 12px;
  color: var(--text-faint);
  text-align: center;
}

/* ─── Graph Container ─────────────────────────────── */

#graph-container {
  flex: 1;
  position: relative;
  background: var(--bg);
  transition: margin-right 0.3s ease;
}

#graph-container.drawer-active {
  margin-right: var(--drawer-width);
}

#graph-container canvas {
  display: block;
}

/* ─── Empty State ─────────────────────────────────── */

.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.empty-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 400px;
  max-width: 90vw;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 4px;
}

.empty-card h2 {
  font-size: 18px;
  font-weight: 600;
}

.empty-card p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.empty-card .input {
  text-align: left;
}

/* ─── Floating Card ───────────────────────────────── */

.floating-card {
  position: fixed;
  width: 320px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  z-index: 15;
  cursor: pointer;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.floating-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7), 0 0 20px var(--accent-glow);
}

.fc-accent {
  height: 3px;
  width: 100%;
}

.fc-body {
  padding: 14px 16px;
}

.fc-author {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}

.fc-text {
  font-size: 13px;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 10px;
}

.fc-tags {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.fc-tag {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  background: var(--bg-hover);
  padding: 1px 6px;
  border-radius: 3px;
}

.fc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fc-category {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.fc-expand {
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
}

/* ─── Right Drawer ────────────────────────────────── */

.detail-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--drawer-width);
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  z-index: 25;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.detail-drawer.open {
  transform: translateX(0);
}

.detail-drawer .btn-close {
  position: sticky;
  top: 12px;
  float: right;
  margin: 12px 12px 0 0;
  background: var(--bg-hover);
  border: none;
  color: var(--text-dim);
  font-size: 18px;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.detail-drawer .btn-close:hover {
  color: var(--text);
  background: var(--border);
}

.drawer-category-bar {
  height: 3px;
  width: 100%;
}

#drawer-content {
  padding: 16px 20px 24px;
}

.drawer-header {
  margin-bottom: 16px;
}

.drawer-author {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.drawer-author-name {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 2px;
}

.drawer-category-pill {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 8px;
}

.drawer-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre-wrap;
  margin-bottom: 16px;
}

.drawer-section {
  margin-bottom: 16px;
}

.drawer-section-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.drawer-thread {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--border);
}

.thread-item {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

.thread-num {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  margin-right: 4px;
}

.drawer-media {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drawer-media-img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.drawer-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.drawer-tags-edit {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.drawer-tag {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  background: var(--bg-hover);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: default;
  transition: color 0.1s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tag-remove {
  cursor: pointer;
  color: var(--text-faint);
  font-size: 14px;
  line-height: 1;
  transition: color 0.15s;
}

.tag-remove:hover {
  color: #e57373;
}

.tag-input {
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 3px 4px;
  width: 80px;
}

.tag-input::placeholder {
  color: var(--text-faint);
}

.drawer-tag:hover {
  color: var(--accent);
}

.drawer-notes {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
  font-style: italic;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.drawer-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: 12px;
}

.drawer-open-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}

.drawer-open-link:hover {
  background: var(--bg-hover);
}

/* ─── Tooltip ─────────────────────────────────────── */

.node-tooltip {
  position: fixed;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  max-width: 280px;
  pointer-events: none;
  z-index: 30;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.node-tooltip .tt-author {
  color: var(--accent);
  font-weight: 600;
  font-size: 11px;
}

.node-tooltip .tt-text {
  color: var(--text-dim);
  margin-top: 2px;
  line-height: 1.3;
  font-size: 11px;
}

.node-tooltip .tt-tag {
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
}

/* ─── Modal ───────────────────────────────────────── */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 440px;
  max-width: 90vw;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-content h2 {
  font-size: 16px;
  margin-bottom: 2px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}

.status {
  font-size: 13px;
  color: var(--text-dim);
  min-height: 18px;
}

.status.error { color: #f06292; }
.status.success { color: #81c784; }

/* ─── Inputs & Buttons ────────────────────────────── */

.input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  width: 100%;
  min-height: 38px;
  transition: border-color 0.15s;
}

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

textarea.input {
  resize: vertical;
}

.btn {
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}

.btn:hover { background: var(--bg-hover); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--warm) 100%);
  border-color: var(--accent);
  color: white;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: box-shadow 0.2s, filter 0.2s;
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  filter: brightness(1.1);
}
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-small { padding: 6px 12px; font-size: 11px; min-height: 30px; }

/* ─── Mobile ──────────────────────────────────────── */

.mobile-list {
  display: none;
}

@media (max-width: 768px) {
  #header {
    padding: 8px 12px;
    flex-wrap: wrap;
    gap: 6px;
  }

  .header-left {
    gap: 8px;
  }

  .header-logo {
    height: 28px;
  }

  .header-left h1 {
    font-size: 15px;
  }

  .credit {
    display: none;
  }

  .badge {
    display: none;
  }

  .header-right {
    flex: 1;
    justify-content: flex-end;
  }

  .header-search .input {
    width: 140px;
    font-size: 12px;
    padding: 6px 10px;
  }

  #sidebar {
    display: none;
  }

  #graph-container {
    display: none;
  }

  .mobile-list {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    gap: 10px;
  }

  .mobile-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    cursor: pointer;
    transition: background 0.1s;
  }

  .mobile-card:hover {
    background: var(--bg-hover);
  }

  .mobile-card .mc-author {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
  }

  .mobile-card .mc-text {
    font-size: 13px;
    color: var(--text);
    margin: 4px 0 8px;
    line-height: 1.4;
  }

  .mobile-card .mc-footer {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
    font-size: 11px;
  }

  .mobile-card .mc-tag {
    font-family: var(--font-mono);
    color: var(--text-dim);
  }

  .mobile-card .mc-cat {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
  }

  #category-strip {
    padding: 6px 12px;
    gap: 6px;
  }

  .cat-pill {
    font-size: 11px;
    padding: 3px 10px;
  }

  .detail-drawer {
    width: 100%;
  }

  #graph-container.drawer-active {
    margin-right: 0;
  }
}