:root {
  --black: #020403;
  --green: #63ff9f;
  --green-dim: #1fb66b;
  --amber: #ffcc66;
  --red: #ff3f5f;
  --text: #baffd0;
  --sidebar-bg: #070d09;
  --panel-border: #1fb66b;
  --btn-bg: #0e1f13;
  --btn-hover: #183322;
  --input-bg: #0b1710;
  --font: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html, body {
  width: 100%; height: 100%; overflow: hidden;
  background: var(--black);
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
}

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

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

#main-row {
  display: flex;
  flex: 1;
  overflow: hidden;
}

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

#sidebar {
  width: 260px;
  min-width: 180px;
  max-width: 60vw;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#sidebar-resizer {
  width: 5px;
  flex-shrink: 0;
  cursor: col-resize;
  background: transparent;
  transition: background 0.1s;
}
#sidebar-resizer:hover, #sidebar-resizer.dragging {
  background: var(--green-dim);
}

.sidebar-section {
  border-bottom: 1px solid #0f2016;
  padding: 10px 12px;
}

.sidebar-section h3 {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--green-dim);
  margin-bottom: 8px;
}

/* ── Settings section ─────────────────────────────────────────────────── */

.setting-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.setting-row label {
  flex: 1;
  color: var(--text);
}

.setting-row input[type="number"],
.setting-row select {
  width: 54px;
  background: var(--input-bg);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 12px;
  padding: 2px 5px;
  outline: none;
}

.setting-row select {
  width: auto;
  cursor: pointer;
}

.setting-row input[type="number"]:focus,
.setting-row select:focus {
  border-color: var(--green);
}

.setting-row input[type="color"] {
  width: 36px;
  height: 22px;
  padding: 1px;
  border: 1px solid var(--green-dim);
  background: var(--input-bg);
  cursor: pointer;
}

/* ── Info (top-right of canvas toolbar) ───────────────────────────────── */

#topbar-info {
  display: flex;
  gap: 14px;
  margin-left: auto;
  white-space: nowrap;
}

#info-size, #info-slots, #info-icon-size {
  color: var(--amber);
  font-size: 11px;
}

/* ── Buttons ──────────────────────────────────────────────────────────── */

.btn {
  display: inline-block;
  background: var(--btn-bg);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  padding: 4px 10px;
  cursor: pointer;
  user-select: none;
  transition: background 0.1s, border-color 0.1s;
}

.btn:hover { background: var(--btn-hover); border-color: var(--green); }
.btn:active { background: #0f2018; }
.btn.toggled { background: #103424; border-color: var(--green); box-shadow: 0 0 6px rgba(99,255,159,0.35) inset; }
.btn.danger { border-color: #7a1f2f; color: var(--red); }
.btn.danger:hover { background: #2a0a10; border-color: var(--red); }
.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Icon search ──────────────────────────────────────────────────────── */

.icon-search-input {
  width: 100%;
  margin-top: 8px;
  background: var(--input-bg);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  padding: 4px 7px;
  outline: none;
}
.icon-search-input:focus { border-color: var(--green); }
.icon-search-input::placeholder { color: var(--green-dim); opacity: 0.7; }

/* ── Icon browser ─────────────────────────────────────────────────────── */

#icon-list-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 6px 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--green-dim) var(--sidebar-bg);
}

.icon-entry {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 5px;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 2px;
  margin-bottom: 2px;
}

.icon-entry:hover { background: #0d1f13; border-color: #1a3322; }
.icon-entry.selected { border-color: var(--green); background: #0e2215; }

.icon-thumb {
  width: 32px;
  height: 32px;
  object-fit: contain;
  background: repeating-conic-gradient(#2a2a2a 0% 25%, #3a3a3a 0% 50%) 0 0 / 8px 8px;
  flex-shrink: 0;
}

.icon-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}

.icon-name-edit {
  flex: 1;
  background: var(--input-bg);
  border: 1px solid var(--green);
  color: var(--green);
  font-family: var(--font);
  font-size: 12px;
  padding: 1px 4px;
  outline: none;
}

.icon-actions { display: flex; gap: 3px; }

.icon-btn {
  background: none;
  border: none;
  color: var(--green-dim);
  font-size: 13px;
  cursor: pointer;
  padding: 1px 3px;
  line-height: 1;
}
.icon-btn:hover { color: var(--green); }
.icon-btn.del:hover { color: var(--red); }

.icon-pin-indicator {
  font-size: 10px;
  color: var(--amber);
  margin-left: 2px;
}

/* Stacked (overlapping) icon marker in the sidebar list */
.icon-overlap-indicator {
  font-size: 11px;
  color: var(--red);
  margin-left: 2px;
  flex-shrink: 0;
}

.icon-coords {
  font-size: 10px;
  color: var(--amber);
  opacity: 0.75;
  flex-shrink: 0;
  white-space: nowrap;
}

/* ── Canvas area ──────────────────────────────────────────────────────── */

#canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

#canvas-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-bottom: 1px solid #0f2016;
  background: var(--sidebar-bg);
  flex-shrink: 0;
}

#zoom-label {
  color: var(--amber);
  min-width: 42px;
  text-align: right;
}

#canvas-names-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-bottom: 1px solid #0f2016;
  background: var(--sidebar-bg);
  flex-shrink: 0;
}

#canvas-names-row label { cursor: pointer; }

#atlas-canvas {
  flex: 1;
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

/* ── Export bar ───────────────────────────────────────────────────────── */

#export-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-top: 1px solid var(--panel-border);
  background: var(--sidebar-bg);
  flex-shrink: 0;
  flex-wrap: wrap;
}

#export-bar span {
  color: var(--green-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-right: 4px;
}

#export-bar .bar-sep {
  color: #1a3322;
  font-size: 16px;
  margin: 0 4px;
  letter-spacing: 0;
  text-transform: none;
}

#export-bar .save-btn {
  border-color: #2a6b45;
  color: var(--green);
}
#export-bar .save-btn:hover { border-color: var(--green); background: #0d2818; }

/* Project name chip — click to rename */
#project-name {
  color: var(--green) !important;
  font-size: 11px !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  border: 1px dashed transparent;
  padding: 2px 7px;
  border-radius: 2px;
  cursor: pointer;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#project-name:hover { border-color: var(--green-dim); background: #0d2818; }
#project-name.unnamed { color: var(--green-dim) !important; font-style: italic; }

/* Linked-folder status chip */
#link-status {
  color: var(--black) !important;
  background: var(--green-dim);
  font-size: 10px !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  padding: 2px 7px;
  border-radius: 2px;
  cursor: pointer;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#link-status:hover { background: var(--red); color: #fff !important; }

/* ── Context menu ─────────────────────────────────────────────────────── */

#ctx-menu {
  position: fixed;
  background: #0d1a10;
  border: 1px solid var(--green-dim);
  min-width: 160px;
  z-index: 10000;
  display: none;
  box-shadow: 0 4px 16px rgba(0,0,0,0.7);
}

/* Small anchored dropdown (e.g. fast-export format) — same look as ctx menu */
.drop-menu {
  position: fixed;
  background: #0d1a10;
  border: 1px solid var(--green-dim);
  min-width: 160px;
  z-index: 21000;
  box-shadow: 0 4px 16px rgba(0,0,0,0.7);
}

#ctx-menu.visible { display: block; }

.ctx-item {
  padding: 6px 14px;
  cursor: pointer;
  color: var(--text);
  font-size: 12px;
}
.ctx-item:hover { background: var(--btn-hover); color: var(--green); }
.ctx-item.danger:hover { color: var(--red); }
.ctx-item.separator { border-top: 1px solid #1a2e1f; pointer-events: none; }

/* ── Scrollbar ────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--sidebar-bg); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }

/* ── Drop overlay ─────────────────────────────────────────────────────── */

#drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2,4,3,0.82);
  border: 2px dashed var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--green);
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}

#drop-overlay.visible { opacity: 1; }

/* ── Empty state ──────────────────────────────────────────────────────── */

#empty-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--green-dim);
  pointer-events: none;
  gap: 8px;
}

#empty-hint.hidden { display: none; }

#empty-hint .hint-big {
  font-size: 15px;
  color: var(--green);
}

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

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2,4,3,0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20000;
}

.modal-box {
  background: #070d09;
  border: 1px solid var(--green-dim);
  padding: 22px 26px;
  min-width: 300px;
  max-height: 88vh;        /* long dialogs (e.g. Export) scroll instead of overflowing */
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.8);
}

.modal-title {
  font-size: 13px;
  color: var(--green);
  margin-bottom: 10px;
  letter-spacing: 0.06em;
}

.modal-desc {
  color: var(--text);
  font-size: 11px;
  margin-bottom: 14px;
  line-height: 1.6;
  opacity: 0.8;
}

/* Busy-modal spinner */
.modal-spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--green-dim);
  border-top-color: var(--green);
  border-radius: 50%;
  margin: 12px auto 4px;
  animation: modal-spin 0.8s linear infinite;
}
@keyframes modal-spin { to { transform: rotate(360deg); } }

.modal-radio-group { margin-bottom: 8px; }

/* ✕ at the end of a removable radio row (e.g. recent linked projects) */
.modal-row-x {
  margin-left: auto;
  padding: 0 5px;
  cursor: pointer;
  color: var(--green-dim);
  font-size: 11px;
  user-select: none;
}
.modal-row-x:hover { color: var(--red, #ff5555); }

.modal-radio-head {
  color: var(--green-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 5px;
}

/* All checkboxes / radios across the UI share the green accent the
   export modal introduced — not just the ones inside modals. */
input[type="radio"],
input[type="checkbox"] {
  accent-color: var(--green-dim);
  cursor: pointer;
}

.modal-box .setting-row input[type="text"] {
  background: var(--input-bg);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 12px;
  padding: 2px 5px;
  outline: none;
}
.modal-box .setting-row input[type="text"]:focus { border-color: var(--green); }

/* ── Pinned icon marker ───────────────────────────────────────────────── */

.pinned-badge {
  display: inline-block;
  background: var(--amber);
  color: var(--black);
  font-size: 8px;
  padding: 0 3px;
  border-radius: 2px;
  margin-left: 3px;
  vertical-align: middle;
}