:root {
  --nord0: #2e3440;
  --nord1: #3b4252;
  --nord2: #434c5e;
  --nord3: #4c566a;
  --nord4: #d8dee9;
  --nord5: #e5e9f0;
  --nord6: #eceff4;
  --nord7: #8fbcbb;
  --nord8: #88c0d0;
  --nord9: #81a1c1;
  --nord10: #5e81ac;
  --nord11: #bf616a;
  --nord12: #d08770;
  --nord13: #ebcb8b;
  --nord14: #a3be8c;

  --bg-color: var(--nord0);
  --text-color: var(--nord4);
  --topbar-bg: rgba(46, 52, 64, 0.85);
  --topbar-border: var(--nord2);
  --title-color: var(--nord6);
  --subtitle-color: var(--nord8);
  --btn-bg: var(--nord1);
  --btn-text: var(--nord5);
  --btn-border: var(--nord3);
  --btn-hover-border: var(--nord9);
  --panel-bg: rgba(59, 66, 82, 0.75);
  --panel-border: var(--nord2);
  --card-bg: linear-gradient(180deg, rgba(76, 86, 106, 0.7), rgba(67, 76, 94, 0.95));
  --card-border: var(--nord3);
  --card-text: var(--nord5);
  --handle-separator: rgba(46, 52, 64, 0.45);
  --handle-text: var(--nord6);
  --meta-text: var(--nord9);
  --link-color: var(--nord8);
  --link-hover: var(--nord7);
  --focus-ring: rgba(136, 192, 208, 0.28);
  --focus-bg: rgba(143, 188, 187, 0.08);
  --wire: var(--nord9);
  --bg-glow-1: rgba(94, 129, 172, 0.2);
  --bg-glow-2: rgba(136, 192, 208, 0.15);
  --shadow: 0 10px 22px rgba(0, 0, 0, 0.28);
}

body.theme-light {
  --bg-color: var(--nord6);
  --text-color: var(--nord1);
  --topbar-bg: rgba(236, 239, 244, 0.9);
  --topbar-border: var(--nord4);
  --title-color: var(--nord1);
  --subtitle-color: var(--nord10);
  --btn-bg: #e9edf4;
  --btn-text: var(--nord1);
  --btn-border: #c7d0df;
  --btn-hover-border: var(--nord10);
  --panel-bg: rgba(229, 233, 240, 0.85);
  --panel-border: #c7d0df;
  --card-bg: linear-gradient(180deg, #f8f9fc, #e7ebf3);
  --card-border: #c4cddd;
  --card-text: var(--nord1);
  --handle-separator: rgba(76, 86, 106, 0.35);
  --handle-text: var(--nord1);
  --meta-text: var(--nord3);
  --link-color: var(--nord10);
  --link-hover: var(--nord9);
  --focus-ring: rgba(94, 129, 172, 0.32);
  --focus-bg: rgba(129, 161, 193, 0.12);
  --wire: var(--nord10);
  --bg-glow-1: rgba(143, 188, 187, 0.3);
  --bg-glow-2: rgba(129, 161, 193, 0.2);
  --shadow: 0 10px 22px rgba(46, 52, 64, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text-color);
  background:
    radial-gradient(circle at 20% 0%, var(--bg-glow-1) 0%, transparent 40%),
    radial-gradient(circle at 90% 100%, var(--bg-glow-2) 0%, transparent 35%),
    var(--bg-color);
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem;
  border-bottom: 1px solid var(--topbar-border);
  background: var(--topbar-bg);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 2;
}

.topbar-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--title-color);
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--subtitle-color);
  font-size: 0.9rem;
}

.toolbar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.35rem;
}

.toolbar-top {
  width: 100%;
  justify-content: flex-end;
  margin-bottom: 0.75rem;
}

.toolbar-top,
.toolbar-main {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-text);
  padding: 0.55rem 0.8rem;
  border-radius: 0.65rem;
  font-size: 0.9rem;
  cursor: pointer;
}

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

.btn.primary {
  background: linear-gradient(135deg, var(--nord10), var(--nord9));
  border-color: transparent;
  color: var(--nord6);
}

.btn.btn-load {
  background: linear-gradient(135deg, var(--nord14), var(--nord7));
  border-color: transparent;
  color: var(--nord1);
}

.btn.btn-save {
  background: linear-gradient(135deg, var(--nord11), var(--nord12));
  border-color: transparent;
  color: var(--nord6);
}

.btn.btn-tags {
  background: linear-gradient(135deg, #6a4c79, #b48ead);
  border-color: transparent;
  color: var(--nord6);
}

.btn.btn-templates {
  background: linear-gradient(135deg, var(--nord9), var(--nord10));
  border-color: transparent;
  color: var(--nord6);
}

.btn.btn-layout {
  background: linear-gradient(135deg, var(--nord7), var(--nord8));
  border-color: transparent;
  color: var(--nord1);
}

.btn.btn-export {
  padding: 0.3rem 0.58rem;
  font-size: 0.78rem;
  background: linear-gradient(135deg, rgba(94, 129, 172, 0.26), rgba(136, 192, 208, 0.22));
  border-color: color-mix(in srgb, var(--nord9), var(--btn-border) 45%);
  color: var(--nord8);
}

.sync-indicator {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--meta-text);
  padding: 0.42rem 0.62rem;
  border-radius: 0.65rem;
  font-size: 0.8rem;
  line-height: 1;
  white-space: nowrap;
}

.sync-indicator[data-state="ok"] {
  border-color: rgba(163, 190, 140, 0.6);
  color: var(--nord14);
}

.sync-indicator[data-state="warn"] {
  border-color: rgba(235, 203, 139, 0.6);
  color: var(--nord13);
}

.sync-indicator[data-state="error"] {
  border-color: rgba(191, 97, 106, 0.6);
  color: var(--nord11);
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: 0.2rem;
  color: var(--btn-text);
  font-size: 0.85rem;
  user-select: none;
}

.theme-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.theme-slider {
  width: 2.35rem;
  height: 1.35rem;
  border-radius: 999px;
  background: var(--nord3);
  border: 1px solid var(--btn-border);
  position: relative;
  transition: background 160ms ease;
}

.theme-slider::after {
  content: "";
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--nord6);
  position: absolute;
  top: 0.14rem;
  left: 0.16rem;
  transition: transform 160ms ease;
}

.theme-switch input:checked + .theme-slider {
  background: var(--nord10);
}

.theme-switch input:checked + .theme-slider::after {
  transform: translateX(0.98rem);
}

.theme-switch input:focus-visible + .theme-slider {
  box-shadow: 0 0 0 2px var(--focus-ring);
}

.hidden {
  display: none;
}

.tags-panel {
  margin: 0.9rem 1rem 0;
  padding: 0.85rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.8rem;
  background: var(--panel-bg);
}

.tags-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.tags-panel-header h2 {
  margin: 0;
  font-size: 1rem;
  color: var(--title-color);
}

.tags-list {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.tag-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.45rem;
}

.tag-create {
  display: flex;
  gap: 0.5rem;
}

.templates-list {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.template-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.45rem;
}

.template-create {
  display: flex;
  gap: 0.5rem;
}

.tag-create input,
.tag-row input[type="text"],
.template-create input,
.template-row input[type="text"],
textarea,
select {
  border: 1px solid var(--btn-border);
  border-radius: 0.5rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  padding: 0.42rem 0.52rem;
}

.tag-row input[type="color"] {
  border: 1px solid var(--btn-border);
  border-radius: 0.5rem;
  width: 2.6rem;
  padding: 0.15rem;
  background: var(--btn-bg);
}

main {
  padding: 1rem;
}

.viewport {
  height: min(56vh, calc(100dvh - 250px));
  min-height: 300px;
  border: 1px solid var(--panel-border);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(67, 76, 94, 0.35), rgba(59, 66, 82, 0.6));
  overflow: hidden;
  cursor: grab;
  position: relative;
}

.viewport.panning {
  cursor: grabbing;
}

.canvas-resizer {
  height: 14px;
  margin: -1px 0.75rem 0.25rem;
  cursor: ns-resize;
  position: relative;
}

.canvas-resizer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 6px;
  border-top: 1px solid var(--panel-border);
}

.canvas-resizer::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 3px;
  width: 48px;
  margin-left: -24px;
  border-top: 3px solid color-mix(in srgb, var(--nord8), transparent 15%);
  border-radius: 999px;
  opacity: 0.75;
}

.canvas {
  width: 5000px;
  height: 5000px;
  position: relative;
  transform-origin: 0 0;
}

.wires {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.wire-path {
  fill: none;
  stroke: var(--wire);
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.95;
}

.wire-path-locked {
  stroke: color-mix(in srgb, var(--nord11), var(--wire) 55%);
}

.wire-label {
  font-size: 10px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  fill: var(--nord6);
  pointer-events: none;
}

.wire-label-bg {
  font-size: 10px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  fill: rgba(46, 52, 64, 0.8);
  stroke: rgba(46, 52, 64, 0.8);
  stroke-width: 4;
  paint-order: stroke fill;
  pointer-events: none;
}

.cards-layer {
  position: absolute;
  inset: 0;
}

.card {
  position: absolute;
  width: 280px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  overflow: hidden;
  color: var(--card-text);
  box-shadow: var(--shadow);
}

.card.selected {
  box-shadow: 0 0 0 2px var(--nord8);
}

.card.locked {
  box-shadow:
    0 0 0 2px rgba(191, 97, 106, 0.5),
    var(--shadow);
}

.card-grab {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--handle-separator);
  padding: 0.24rem 0.4rem 0.24rem 0.45rem;
  gap: 0.3rem;
  cursor: grab;
  user-select: none;
}

.card-grab:active {
  cursor: grabbing;
}

.grab-title {
  flex: 1;
  min-width: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--handle-text);
  text-transform: uppercase;
}

.card-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}

.icon-btn {
  border: 0;
  background: rgba(46, 52, 64, 0.22);
  color: var(--handle-text);
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 0.35rem;
  line-height: 1;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background: rgba(46, 52, 64, 0.36);
}

.icon-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.icon-btn.text-btn {
  width: auto;
  min-width: 2.15rem;
  padding: 0 0.42rem;
  font-size: 0.76rem;
}

.icon-btn.danger {
  color: var(--nord11);
}

.icon-btn.lock-btn.is-unlocked {
  color: #e7b089;
  border: 1px solid rgba(224, 160, 125, 0.55);
}

.icon-btn.lock-btn.is-locked {
  color: #c56f4d;
  border: 1px solid rgba(197, 111, 77, 0.68);
}

.card-body {
  padding: 0.65rem;
  line-height: 1.4;
  display: grid;
  gap: 0.5rem;
}

.card-text {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 1.2rem;
}

.card.collapsed .card-body {
  display: none;
}

.label-line {
  display: grid;
  gap: 0.2rem;
  font-size: 0.78rem;
  color: var(--meta-text);
}

.label-line.inline {
  grid-template-columns: 1fr;
}

.tag-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
}

.tag-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
}

.tag-chip {
  border: 1px solid color-mix(in srgb, var(--tag-color), var(--btn-border) 55%);
  border-radius: 999px;
  padding: 0.1rem 0.45rem;
  font-size: 0.7rem;
  background: color-mix(in srgb, var(--tag-color), transparent 80%);
}

.tag-chip-remove {
  cursor: pointer;
}

.tag-chip-remove:hover {
  border-color: var(--btn-hover-border);
}

.tag-add-select {
  border: 1px solid var(--btn-border);
  border-radius: 0.4rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 0.72rem;
  padding: 0.14rem 0.24rem;
  max-width: 7rem;
  min-width: 5.3rem;
}

.wire-pill {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 999px;
  padding: 0.12rem 0.55rem;
  font-size: 0.74rem;
  line-height: 1.1;
  cursor: pointer;
  white-space: nowrap;
}

.wire-pill:hover {
  border-color: var(--btn-hover-border);
}

.wire-pill.is-locked {
  border-color: rgba(191, 97, 106, 0.55);
  color: var(--nord11);
}

.wire-row {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.wire-label-input {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 0.45rem;
  font-size: 0.72rem;
  padding: 0.12rem 0.35rem;
  min-width: 4.6rem;
  max-width: 7.2rem;
}

.wire-label-input:disabled {
  opacity: 0.55;
}

.wire-lock {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 0.45rem;
  min-width: 1.35rem;
  height: 1.35rem;
  line-height: 1;
  font-size: 0.72rem;
  cursor: pointer;
}

.wire-lock.is-unlocked {
  color: #e7b089;
  border-color: rgba(224, 160, 125, 0.55);
}

.wire-lock.is-locked {
  color: #c56f4d;
  border-color: rgba(197, 111, 77, 0.68);
}

.wire-lock:hover {
  border-color: var(--btn-hover-border);
}

.backlinks-line {
  color: var(--meta-text);
  font-size: 0.75rem;
}

.backlinks-pill {
  cursor: pointer;
}

.shortcuts-legend {
  position: fixed;
  right: 0.9rem;
  bottom: 0.9rem;
  z-index: 5;
  max-width: 22rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.65rem;
  background: var(--topbar-bg);
  color: var(--text-color);
  padding: 0.3rem 0.55rem;
}

.shortcuts-legend summary {
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--subtitle-color);
}

.shortcuts-legend ul {
  margin: 0.45rem 0 0.2rem;
  padding-left: 1.05rem;
  font-size: 0.78rem;
}

.shortcuts-legend p {
  margin: 0.2rem 0 0.35rem;
  font-size: 0.75rem;
  color: var(--meta-text);
}

.shortcuts-legend kbd {
  border: 1px solid var(--btn-border);
  border-radius: 0.35rem;
  padding: 0.04rem 0.3rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 0.72rem;
  font-family: "SFMono-Regular", Menlo, monospace;
}

.site-footer {
  margin: 0.9rem 1rem 1.2rem;
  padding: 0.85rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.8rem;
  background: var(--panel-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
}

.footer-link {
  color: var(--link-color);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-copy {
  color: var(--meta-text);
  font-size: 0.8rem;
  white-space: nowrap;
}

.doc-main {
  max-width: 900px;
  margin: 1rem auto 1.3rem;
  padding: 0 1rem;
}

.doc-card {
  border: 1px solid var(--panel-border);
  border-radius: 0.9rem;
  background: var(--panel-bg);
  padding: 1rem 1.1rem;
}

.doc-card h2,
.doc-card h3 {
  color: var(--title-color);
}

.doc-card p,
.doc-card li {
  color: var(--text-color);
  line-height: 1.5;
}

.doc-card code {
  border: 1px solid var(--btn-border);
  border-radius: 0.35rem;
  padding: 0.08rem 0.32rem;
  background: var(--btn-bg);
  color: var(--btn-text);
}

.doc-headline {
  margin-top: 0;
}

.search-modal {
  position: fixed;
  inset: 0;
  z-index: 8;
  background: rgba(24, 28, 36, 0.45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}

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

.search-card {
  width: min(700px, calc(100vw - 2rem));
  border: 1px solid var(--panel-border);
  border-radius: 0.8rem;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  padding: 0.75rem;
  display: grid;
  gap: 0.55rem;
}

.search-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.search-head strong {
  color: var(--title-color);
}

.search-results {
  max-height: min(46vh, 440px);
  overflow: auto;
  display: grid;
  gap: 0.35rem;
}

.search-item {
  border: 1px solid var(--btn-border);
  border-radius: 0.6rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  padding: 0.45rem 0.55rem;
  text-align: left;
  cursor: pointer;
}

.search-item:hover {
  border-color: var(--btn-hover-border);
}

.search-item small {
  display: block;
  color: var(--meta-text);
  margin-top: 0.18rem;
}

.mini-map {
  position: fixed;
  left: 1rem;
  top: 7.2rem;
  z-index: 6;
  width: 220px;
  border: 1px solid var(--panel-border);
  border-radius: 0.75rem;
  background: var(--topbar-bg);
  backdrop-filter: blur(5px);
  overflow: hidden;
  user-select: none;
}

.mini-map-head {
  padding: 0.2rem 0.45rem;
  border-bottom: 1px solid var(--panel-border);
  color: var(--meta-text);
  font-size: 0.72rem;
  cursor: grab;
}

.mini-map.dragging .mini-map-head {
  cursor: grabbing;
}

.mini-map-svg {
  display: block;
  width: 220px;
  height: 130px;
}

.mini-map-viewport {
  position: absolute;
  left: 10px;
  top: 30px;
  width: 40px;
  height: 30px;
  border: 1px solid var(--nord8);
  background: rgba(136, 192, 208, 0.1);
  pointer-events: none;
  border-radius: 4px;
}

@media (max-width: 620px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar {
    width: 100%;
  }

  .toolbar-top,
  .toolbar-main {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .viewport {
    height: min(50vh, calc(100dvh - 260px));
    min-height: 260px;
  }

  .canvas-resizer {
    margin-left: 0.35rem;
    margin-right: 0.35rem;
  }

  .mini-map {
    width: 170px;
  }

  .mini-map-svg {
    width: 170px;
    height: 100px;
  }
}