:root {
  --bg: #16181c;
  --bg-elevated: #1d2025;
  --panel: #212530;
  --panel-2: #262b36;
  --border: #313845;
  --border-strong: #3e4756;
  --text: #e4e7ec;
  --text-muted: #9aa3b2;
  --text-dim: #6b7280;
  --accent: #5b8def;
  --accent-soft: rgba(91, 141, 239, 0.16);
  --accent-border: rgba(91, 141, 239, 0.55);
  --teal: #4cc2b0;
  --amber: #d6a35c;
  --rose: #d97b8a;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.25);
  --pane-min: 320px;
  --row-min: 160px;
  --browser-width: 46%;
  --grid-height: 58%;
  --splitter-size: 10px;
}

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

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.toolbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.2px;
  margin-right: 4px;
  white-space: nowrap;
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-wrap {
  position: relative;
  flex: 1 1 240px;
  min-width: 180px;
}

.search-wrap svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.control {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  height: 38px;
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

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

.control:focus {
  border-color: var(--accent-border);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

input.control.search {
  width: 100%;
  padding: 0 12px 0 34px;
}

/* ---------- User pill / logout ---------- */
.user-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

body.is-locked .app {
  filter: blur(2px);
  pointer-events: none;
}

/* ---------- Login overlay ---------- */
.login-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 11, 14, 0.72);
  z-index: 100;
}

.login-overlay[hidden] {
  display: none;
}

.login-card {
  width: 320px;
  max-width: calc(100vw - 32px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.login-title {
  font-size: 17px;
  font-weight: 600;
}

.login-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.login-label {
  font-size: 12.5px;
  color: var(--text-muted);
}

.login-input {
  width: 100%;
  padding: 0 12px;
}

.login-error {
  min-height: 18px;
  font-size: 12.5px;
  color: var(--rose);
}

.login-submit {
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--accent-border);
  background: var(--accent);
  color: #0f1115;
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  margin-top: 4px;
}

.login-submit:hover {
  filter: brightness(1.05);
}

.login-submit:disabled {
  opacity: 0.6;
  cursor: default;
}

select.control {
  padding: 0 30px 0 12px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239aa3b2' stroke-width='2.5'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  min-width: 140px;
}

.count-pill {
  margin-left: auto;
  font-size: 12.5px;
  color: var(--text-muted);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 12px;
  white-space: nowrap;
}
.count-pill b { color: var(--text); font-weight: 600; }

/* ---------- Main layout ---------- */
.main {
  display: grid;
  grid-template-columns: minmax(var(--pane-min), var(--browser-width)) var(--splitter-size) minmax(var(--pane-min), 1fr);
  grid-template-areas: "browser split canvas";
  flex: 1;
  min-height: 0;
}

.browser-col { grid-area: browser; }
.col-splitter { grid-area: split; }
.canvas-col { grid-area: canvas; }

.browser-col {
  display: grid;
  grid-template-rows: minmax(var(--row-min), var(--grid-height)) var(--splitter-size) minmax(var(--row-min), 1fr);
  min-height: 0;
  min-width: 0;
}

.col-splitter {
  position: relative;
  cursor: col-resize;
  touch-action: none;
}

.col-splitter::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--border);
  transition: background 0.15s;
}

.col-splitter:hover::before,
.col-splitter:focus-visible::before,
body.is-col-resizing .col-splitter::before {
  background: var(--accent-border);
}

.col-splitter:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--accent-soft);
}

body.is-col-resizing {
  cursor: col-resize;
  user-select: none;
}

.row-splitter {
  position: relative;
  cursor: row-resize;
  touch-action: none;
}

.row-splitter::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
  background: var(--border);
  transition: background 0.15s;
}

.row-splitter:hover::before,
.row-splitter:focus-visible::before,
body.is-row-resizing .row-splitter::before {
  background: var(--accent-border);
}

.row-splitter:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--accent-soft);
}

body.is-row-resizing {
  cursor: row-resize;
  user-select: none;
}

.grid-area {
  overflow-y: auto;
  padding: 18px;
  min-height: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}

.empty {
  color: var(--text-dim);
  text-align: center;
  padding: 60px 20px;
  font-size: 14px;
  grid-column: 1 / -1;
}

/* ---------- Card ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card.active {
  border-color: var(--accent-border);
  box-shadow: 0 0 0 1px var(--accent-border), 0 8px 24px rgba(0,0,0,0.35);
  background: var(--panel-2);
}

.thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  height: 100%;
  color: var(--text-muted);
}

.placeholder .ext {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.type-badge {
  position: absolute;
  top: 7px;
  left: 7px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 3px 7px;
  border-radius: 5px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.08);
}

.t-image { color: var(--accent); }
.t-video { color: var(--rose); }
.t-audio { color: var(--teal); }
.t-document { color: var(--amber); }
.t-other { color: var(--text-muted); }

.card-meta {
  padding: 9px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.card-name {
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-sub .sep { color: var(--text-dim); }

/* ---------- Detail panel ---------- */
.detail {
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  overflow-y: auto;
  padding: 18px;
  min-height: 0;
}

/* ---------- Canvas app ---------- */
.canvas-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  background: var(--bg-elevated);
}

.canvas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.canvas-title {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--text-muted);
}

.canvas-actions {
  display: flex;
  gap: 8px;
}

.canvas-btn {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 7px;
  height: 30px;
  padding: 0 10px;
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.canvas-btn:hover:not(:disabled) {
  border-color: var(--border-strong);
  background: var(--panel-2);
}

.canvas-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.canvas-viewport {
  position: relative;
  flex: 1;
  min-height: 0;
}

.canvas-scroll {
  position: absolute;
  inset: 0;
  overflow: hidden;
  cursor: grab;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: var(--pan-x, 0px) var(--pan-y, 0px);
}

.canvas-scroll.panning {
  cursor: grabbing;
}

.canvas-surface {
  position: absolute;
  inset: 0;
  overflow: visible;
  transform: translate(var(--pan-x, 0px), var(--pan-y, 0px));
}

.canvas-surface.drag-over {
  box-shadow: inset 0 0 0 2px var(--accent-border);
}

.canvas-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 13.5px;
  text-align: center;
  padding: 20px;
  pointer-events: none;
}

.canvas-item {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--w, 180px);
  transform: translate(-50%, -50%) translate(var(--x, 0px), var(--y, 0px)) rotate(var(--r, 0deg)) scale(var(--s, 1));
  touch-action: none;
  cursor: grab;
}

.canvas-item-inner {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

.canvas-item-inner img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
  user-select: none;
}

.canvas-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 140px;
  height: 140px;
  color: var(--text-muted);
}

.canvas-placeholder .ext {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.canvas-item.selected .canvas-item-inner {
  outline: 2px solid var(--accent-border);
  outline-offset: 2px;
}

.canvas-item .handle {
  position: absolute;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: 2px solid var(--bg);
  border-radius: 50%;
  width: 16px;
  height: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.canvas-item.selected .handle {
  display: flex;
}

.handle-rotate {
  top: -26px;
  left: 50%;
  transform: translateX(-50%);
  cursor: grab;
}

.handle-scale {
  bottom: -8px;
  right: -8px;
  cursor: nwse-resize;
  border-radius: 4px;
}

.detail-empty {
  color: var(--text-dim);
  text-align: center;
  margin-top: 40px;
  font-size: 13.5px;
}

.preview {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.preview img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  background: #000;
}

.preview.preview-image {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow: auto;
  max-height: min(70vh, 720px);
}

.preview video {
  width: 100%;
  display: block;
  max-height: min(46vh, 420px);
  object-fit: contain;
  background: #000;
}

.preview audio {
  width: 100%;
  display: block;
  padding: 16px;
}

.preview iframe {
  width: 100%;
  height: min(52vh, 460px);
  border: 0;
  display: block;
  background: #fff;
}

.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 44px 20px;
  color: var(--text-muted);
}

.preview-placeholder .big-ext {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text);
}

.preview-placeholder .ph-name {
  font-size: 12.5px;
  color: var(--text-muted);
  word-break: break-all;
  text-align: center;
}

.detail-title {
  font-size: 15px;
  font-weight: 600;
  word-break: break-word;
  margin-bottom: 14px;
}

.detail-content {
  display: grid;
  grid-template-columns: minmax(260px, 420px) minmax(220px, 1fr);
  gap: 16px;
  align-items: start;
}

.detail-content .preview {
  margin-bottom: 0;
  min-width: 0;
  order: 2;
}

.detail-meta-wrap {
  min-width: 0;
  order: 1;
}

.meta-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.meta-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 10px;
  padding: 9px 12px;
  font-size: 12.5px;
  border-bottom: 1px solid var(--border);
}
.meta-row:last-child { border-bottom: 0; }
.meta-row:nth-child(odd) { background: var(--panel); }

.meta-key {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 10.5px;
  letter-spacing: 0.4px;
  padding-top: 1px;
}

.meta-val {
  color: var(--text);
  word-break: break-word;
}

.open-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  text-decoration: none;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s;
}
.open-link:hover { background: rgba(91,141,239,0.26); }

/* ---------- Scrollbars ---------- */
.grid-area::-webkit-scrollbar,
.detail::-webkit-scrollbar { width: 10px; }
.grid-area::-webkit-scrollbar-thumb,
.detail::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 8px;
  border: 2px solid var(--bg);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .main {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(240px, 38vh) minmax(0, 1fr);
    grid-template-areas: "canvas" "browser";
  }

  .col-splitter {
    display: none;
  }

  .browser-col {
    grid-template-rows: minmax(180px, 50%) var(--splitter-size) minmax(140px, 1fr);
  }

  .detail {
    max-height: none;
  }

  .detail-content {
    grid-template-columns: 1fr;
  }

  .detail-content .preview {
    margin-bottom: 0;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }
}

@media (max-width: 560px) {
  .toolbar { gap: 8px; }
  .count-pill { display: none; }
  select.control { flex: 1 1 auto; min-width: 0; }
}