/* ===================================================================
   AfroDraft v6 — Main Application CSS
   Full-screen CAD application layout with CSS custom properties theming
   =================================================================== */

/* ── Theme defaults (overridden by theme files) ── */
:root {
  --cad-bg: #1a1a2e;
  --cad-panel: #16213e;
  --cad-panel-alt: #1a2544;
  --cad-border: #2a2a4a;
  --cad-border-hover: #3a3d58;
  --cad-text: #e0e0e0;
  --cad-text-dim: #888;
  --cad-text-muted: #555;
  --cad-accent: #007AFF;
  --cad-accent-hover: #60A5FA;
  --cad-accent-bg: rgba(0,122,255,0.12);
  --cad-accent-bg-hover: rgba(0,122,255,0.2);
  --cad-canvas-bg: #0a0a1a;
  --cad-grid-major: rgba(255,255,255,0.06);
  --cad-grid-minor: rgba(255,255,255,0.02);
  --cad-selection-blue: rgba(0,122,255,0.15);
  --cad-selection-green: rgba(0,200,0,0.15);
  --cad-danger: #ff5577;
  --cad-warning: #ffcc44;
  --cad-success: #44cc66;
  --cad-ruler-bg: #0e1014;
  --cad-ruler-text: #555;
  --cad-ruler-tick: #333;
  --cad-input-bg: #0c0d14;
  --cad-input-border: #2a2a4a;
  --cad-scrollbar-thumb: #333;
  --cad-scrollbar-track: transparent;
  --cad-shadow: 0 4px 24px rgba(0,0,0,0.5);
  --cad-radius: 4px;
  --cad-radius-lg: 8px;
  --cad-font-mono: 'IBM Plex Mono', 'SF Mono', 'Consolas', 'Menlo', monospace;
  --cad-font-ui: 'IBM Plex Mono', 'SF Mono', 'Consolas', monospace;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--cad-font-ui);
  font-size: 12px;
  background: var(--cad-bg);
  color: var(--cad-text);
  user-select: none;
  -webkit-user-select: none;
  cursor: default;
}

/* ── Scrollbars ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--cad-scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--cad-scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--cad-border-hover); }

/* ── Loading screen ── */
#loading {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--cad-bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px; transition: opacity 0.4s;
}
#loading.hidden { opacity: 0; pointer-events: none; }
.loading-logo {
  font-family: var(--cad-font-ui);
  font-size: 28px; font-weight: 700;
  color: var(--cad-accent); letter-spacing: -1px;
}
.loading-bar {
  width: 200px; height: 3px;
  background: var(--cad-border); border-radius: 2px; overflow: hidden;
}
.loading-bar-fill {
  height: 100%; width: 30%; background: var(--cad-accent);
  border-radius: 2px;
  animation: loading-slide 1.2s ease-in-out infinite;
}
@keyframes loading-slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}
.loading-text {
  font-size: 11px; color: var(--cad-text-dim);
}

/* ── App grid layout ── */
#app {
  display: grid;
  grid-template-rows: 32px auto 1fr 24px 28px;
  grid-template-columns: 1fr;
  height: 100vh; width: 100vw;
}

/* ── Tab bar ── */
#tab-bar {
  grid-row: 1;
  background: var(--cad-panel);
  border-bottom: 1px solid var(--cad-border);
  display: flex; align-items: center;
  padding: 0 4px; gap: 2px;
  overflow-x: auto; overflow-y: hidden;
}
#tab-bar::-webkit-scrollbar { height: 0; }
#tab-list { display: flex; gap: 2px; flex: 1; min-width: 0; }
.tab {
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px; height: 26px;
  background: var(--cad-bg); border-radius: var(--cad-radius) var(--cad-radius) 0 0;
  border: 1px solid var(--cad-border); border-bottom: none;
  font-size: 11px; color: var(--cad-text-dim);
  cursor: pointer; white-space: nowrap;
  max-width: 180px; min-width: 0;
  transition: background 0.15s, color 0.15s;
}
.tab:hover { background: var(--cad-panel-alt); color: var(--cad-text); }
.tab.active {
  background: var(--cad-canvas-bg); color: var(--cad-text);
  border-color: var(--cad-accent);
}
.tab-name { overflow: hidden; text-overflow: ellipsis; }
.tab-modified {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cad-accent); flex-shrink: 0;
  display: none;
}
.tab.modified .tab-modified { display: block; }
.tab-close {
  background: none; border: none; color: var(--cad-text-muted);
  font-size: 14px; cursor: pointer; padding: 0;
  line-height: 1; width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 3px; flex-shrink: 0;
}
.tab-close:hover { background: var(--cad-danger); color: #fff; }
#tab-new {
  background: none; border: 1px solid var(--cad-border);
  color: var(--cad-text-dim); width: 26px; height: 26px;
  border-radius: var(--cad-radius); cursor: pointer;
  font-size: 16px; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.15s;
}
#tab-new:hover { background: var(--cad-accent-bg); color: var(--cad-accent); border-color: var(--cad-accent); }

/* ── Ribbon toolbar ── */
#ribbon {
  grid-row: 2;
  background: var(--cad-panel);
  border-bottom: 1px solid var(--cad-border);
  display: flex; align-items: stretch;
  padding: 0 4px; gap: 2px;
  overflow-x: auto; overflow-y: hidden;
  min-height: 56px;
}
#ribbon::-webkit-scrollbar { height: 3px; }
#ribbon.collapsed { min-height: 0; height: 0; overflow: hidden; border: none; padding: 0; }
.ribbon-group {
  display: flex; flex-direction: column;
  border-right: 1px solid var(--cad-border);
  padding: 2px 6px 0; min-width: 0;
}
.ribbon-group:last-child { border-right: none; }
.ribbon-group-label {
  font-size: 9px; color: var(--cad-text-muted);
  text-align: center; text-transform: uppercase;
  letter-spacing: 0.5px; padding: 1px 0 2px;
  border-top: 1px solid var(--cad-border);
  margin-top: auto; white-space: nowrap;
}
.ribbon-group-tools {
  display: flex; gap: 1px; flex-wrap: wrap;
  align-items: flex-start; padding: 2px 0;
}
.ribbon-btn {
  background: none; border: 1px solid transparent;
  color: var(--cad-text-dim); cursor: pointer;
  border-radius: var(--cad-radius);
  width: 32px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  position: relative; transition: all 0.1s;
}
.ribbon-btn:hover {
  background: var(--cad-accent-bg); color: var(--cad-text);
  border-color: var(--cad-border-hover);
}
.ribbon-btn.active {
  background: var(--cad-accent-bg); color: var(--cad-accent);
  border-color: var(--cad-accent);
}
.ribbon-btn svg { width: 16px; height: 16px; pointer-events: none; }
.ribbon-btn[title]::after {
  content: attr(data-shortcut);
  display: none; /* shown via JS tooltip */
}
/* Ribbon collapse toggle */
.ribbon-collapse {
  background: none; border: none;
  color: var(--cad-text-muted); cursor: pointer;
  padding: 0 6px; font-size: 10px;
  display: flex; align-items: center;
  margin-left: auto; flex-shrink: 0;
}
.ribbon-collapse:hover { color: var(--cad-text); }

/* ── Main area (rulers + canvas + panel) ── */
#main-area {
  grid-row: 3;
  display: grid;
  grid-template-columns: 20px 1fr auto;
  grid-template-rows: 20px 1fr;
  overflow: hidden;
}
#ruler-corner {
  grid-row: 1; grid-column: 1;
  background: var(--cad-ruler-bg);
  border-right: 1px solid var(--cad-border);
  border-bottom: 1px solid var(--cad-border);
}
#ruler-h {
  grid-row: 1; grid-column: 2;
  background: var(--cad-ruler-bg);
  border-bottom: 1px solid var(--cad-border);
  display: block; width: 100%; height: 20px;
}
#ruler-v {
  grid-row: 2; grid-column: 1;
  background: var(--cad-ruler-bg);
  border-right: 1px solid var(--cad-border);
  display: block; width: 20px; height: 100%;
}

/* ── Canvas viewport ── */
#canvas-wrap {
  grid-row: 2; grid-column: 2;
  position: relative; overflow: hidden;
  background: var(--cad-canvas-bg);
  cursor: crosshair;
}
#cad-canvas {
  display: block; width: 100%; height: 100%;
  image-rendering: crisp-edges;
}

/* Canvas cursor modes */
#canvas-wrap.cursor-pan { cursor: grab; }
#canvas-wrap.cursor-panning { cursor: grabbing; }
#canvas-wrap.cursor-crosshair { cursor: crosshair; }
#canvas-wrap.cursor-move { cursor: move; }
#canvas-wrap.cursor-rotate { cursor: alias; }
#canvas-wrap.cursor-select { cursor: default; }

/* ── Minimap ── */
#minimap {
  position: absolute; left: 8px; bottom: 8px;
  width: 160px; height: 120px;
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius); opacity: 0.85;
  pointer-events: auto; cursor: pointer;
  box-shadow: var(--cad-shadow);
}

/* ── Zoom controls ── */
#zoom-controls {
  position: absolute; right: 8px; bottom: 8px;
  display: flex; align-items: center; gap: 4px;
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius); padding: 3px 6px;
  box-shadow: var(--cad-shadow);
}
#zoom-controls button {
  background: none; border: 1px solid transparent;
  color: var(--cad-text-dim); cursor: pointer;
  width: 24px; height: 24px;
  border-radius: var(--cad-radius);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.1s;
}
#zoom-controls button:hover {
  background: var(--cad-accent-bg); color: var(--cad-text);
  border-color: var(--cad-border-hover);
}
#zoom-pct {
  font-size: 10px; color: var(--cad-text-dim);
  min-width: 40px; text-align: center;
}

/* ── Properties panel ── */
#properties-panel {
  grid-row: 1 / -1; grid-column: 3;
  background: var(--cad-panel);
  border-left: 1px solid var(--cad-border);
  width: 240px; display: flex; flex-direction: column;
  overflow: hidden; transition: width 0.2s;
}
#properties-panel.collapsed { width: 0; min-width: 0; border: none; }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 10px; border-bottom: 1px solid var(--cad-border);
  background: var(--cad-panel-alt);
}
.panel-title { font-size: 11px; font-weight: 600; color: var(--cad-text); }
.panel-toggle {
  background: none; border: none; color: var(--cad-text-dim);
  cursor: pointer; font-size: 16px; line-height: 1;
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 3px;
}
.panel-toggle:hover { background: var(--cad-accent-bg); color: var(--cad-text); }
.panel-body {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 0;
}

/* Panel sections */
.panel-section {
  border-bottom: 1px solid var(--cad-border);
}
.panel-section-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 10px; cursor: pointer;
  font-size: 10px; font-weight: 600;
  color: var(--cad-text-dim); text-transform: uppercase;
  letter-spacing: 0.5px;
}
.panel-section-header:hover { color: var(--cad-text); background: var(--cad-accent-bg); }
.panel-section-body { padding: 4px 10px 8px; }

/* Property rows */
.prop-row {
  display: flex; align-items: center;
  padding: 2px 0; gap: 6px;
}
.prop-label {
  font-size: 10px; color: var(--cad-text-dim);
  width: 70px; flex-shrink: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.prop-value {
  flex: 1; min-width: 0;
}
.prop-input {
  width: 100%; background: var(--cad-input-bg);
  border: 1px solid var(--cad-input-border);
  border-radius: 3px; color: var(--cad-text);
  font-family: var(--cad-font-mono); font-size: 11px;
  padding: 2px 6px; outline: none;
}
.prop-input:focus { border-color: var(--cad-accent); }
.prop-select {
  width: 100%; background: var(--cad-input-bg);
  border: 1px solid var(--cad-input-border);
  border-radius: 3px; color: var(--cad-text);
  font-family: var(--cad-font-mono); font-size: 11px;
  padding: 2px 4px; outline: none; cursor: pointer;
}
.prop-select:focus { border-color: var(--cad-accent); }

/* Color swatch */
.color-swatch {
  width: 16px; height: 12px; border: 1px solid var(--cad-border);
  border-radius: 2px; cursor: pointer; flex-shrink: 0;
}

/* ── Layer panel ── */
.layer-list {
  padding: 0; margin: 0; list-style: none;
}
.layer-item {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 10px; font-size: 11px;
  cursor: pointer; border-bottom: 1px solid var(--cad-border);
  transition: background 0.1s;
}
.layer-item:hover { background: var(--cad-accent-bg); }
.layer-item.active { background: var(--cad-accent-bg); color: var(--cad-accent); }
.layer-item.current { font-weight: 600; }
.layer-icon-btn {
  background: none; border: none; cursor: pointer;
  width: 16px; height: 16px; padding: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--cad-text-dim); font-size: 12px;
  border-radius: 2px;
}
.layer-icon-btn:hover { color: var(--cad-text); background: var(--cad-accent-bg); }
.layer-icon-btn.off { color: var(--cad-text-muted); opacity: 0.4; }
.layer-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.layer-toolbar {
  display: flex; gap: 4px; padding: 4px 10px;
  border-bottom: 1px solid var(--cad-border);
}
.layer-toolbar button {
  background: var(--cad-input-bg); border: 1px solid var(--cad-input-border);
  color: var(--cad-text-dim); font-size: 10px; cursor: pointer;
  padding: 2px 8px; border-radius: 3px;
  font-family: var(--cad-font-ui);
}
.layer-toolbar button:hover { background: var(--cad-accent-bg); color: var(--cad-text); border-color: var(--cad-accent); }
.layer-search {
  width: 100%; background: var(--cad-input-bg);
  border: 1px solid var(--cad-input-border);
  border-radius: 3px; color: var(--cad-text);
  font-family: var(--cad-font-mono); font-size: 10px;
  padding: 3px 6px; outline: none;
}
.layer-search:focus { border-color: var(--cad-accent); }

/* ── Status bar ── */
#status-bar {
  grid-row: 4;
  background: var(--cad-panel);
  border-top: 1px solid var(--cad-border);
  display: flex; align-items: center;
  padding: 0 8px; gap: 4px;
  font-size: 10px;
}
#status-coords {
  display: flex; gap: 12px; min-width: 200px;
  color: var(--cad-text-dim); font-family: var(--cad-font-mono);
}
#status-coords span b { color: var(--cad-text); font-weight: 500; }
#status-toggles {
  display: flex; gap: 2px; flex: 1;
  justify-content: center;
}
.status-toggle {
  background: none; border: 1px solid transparent;
  color: var(--cad-text-muted); cursor: pointer;
  font-family: var(--cad-font-ui); font-size: 9px;
  padding: 1px 6px; border-radius: 3px;
  text-transform: uppercase; letter-spacing: 0.3px;
  transition: all 0.1s;
}
.status-toggle:hover { background: var(--cad-accent-bg); color: var(--cad-text-dim); }
.status-toggle.on {
  background: var(--cad-accent-bg); color: var(--cad-accent);
  border-color: var(--cad-accent); font-weight: 600;
}
#status-units {
  color: var(--cad-text-dim); font-size: 10px;
  padding-right: 4px;
}

/* ── Command line ── */
#command-area {
  grid-row: 5;
  background: var(--cad-bg);
  border-top: 1px solid var(--cad-border);
  display: flex; flex-direction: column;
  font-family: var(--cad-font-mono); font-size: 11px;
}
#cmd-history {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 2px 8px; max-height: 80px;
  display: none; /* shown when expanded */
}
#command-area.expanded #cmd-history { display: block; }
#command-area.expanded { grid-row: 5; height: auto; max-height: 120px; }
.cmd-line { padding: 1px 0; white-space: nowrap; }
.cmd-line.cmd { color: var(--cad-accent); }
.cmd-line.out { color: var(--cad-text-dim); }
.cmd-line.err { color: var(--cad-danger); }
#cmd-input-wrap {
  display: flex; align-items: center;
  padding: 0 8px; gap: 6px; height: 28px;
  border-top: 1px solid var(--cad-border);
}
#cmd-prompt {
  color: var(--cad-text-dim); white-space: nowrap;
  font-size: 11px;
}
#cmd-input {
  flex: 1; background: none; border: none;
  color: var(--cad-text); font-family: var(--cad-font-mono);
  font-size: 11px; outline: none;
  caret-color: var(--cad-accent);
}
#cmd-input::placeholder { color: var(--cad-text-muted); }

/* ── Autocomplete dropdown ── */
#cmd-autocomplete {
  position: fixed; z-index: 9000;
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius); box-shadow: var(--cad-shadow);
  max-height: 200px; overflow-y: auto;
  min-width: 180px;
}
#cmd-autocomplete.hidden { display: none; }
.ac-item {
  padding: 4px 10px; font-size: 11px;
  font-family: var(--cad-font-mono);
  cursor: pointer; display: flex; justify-content: space-between;
  color: var(--cad-text);
}
.ac-item:hover, .ac-item.selected { background: var(--cad-accent-bg); color: var(--cad-accent); }
.ac-item .ac-shortcut { color: var(--cad-text-muted); font-size: 10px; }

/* ── Context menu ── */
#context-menu {
  position: fixed; z-index: 9500;
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius-lg); box-shadow: var(--cad-shadow);
  min-width: 180px; padding: 4px 0;
}
#context-menu.hidden { display: none; }
.ctx-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 12px; font-size: 11px;
  cursor: pointer; color: var(--cad-text);
  transition: background 0.1s;
}
.ctx-item:hover { background: var(--cad-accent-bg); color: var(--cad-accent); }
.ctx-item-label { display: flex; align-items: center; gap: 8px; }
.ctx-item-label svg { width: 14px; height: 14px; color: var(--cad-text-dim); }
.ctx-item-shortcut { font-size: 10px; color: var(--cad-text-muted); }
.ctx-separator {
  height: 1px; background: var(--cad-border); margin: 4px 8px;
}
.ctx-item.disabled { color: var(--cad-text-muted); pointer-events: none; }

/* ── Modal overlay ── */
#modal-overlay {
  position: fixed; inset: 0; z-index: 9900;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
}
#modal-overlay.hidden { display: none; }
.modal {
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius-lg); box-shadow: var(--cad-shadow);
  min-width: 400px; max-width: 90vw; max-height: 85vh;
  display: flex; flex-direction: column; overflow: hidden;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--cad-border);
  background: var(--cad-panel-alt);
}
.modal-title { font-size: 13px; font-weight: 600; color: var(--cad-text); }
.modal-close {
  background: none; border: none; color: var(--cad-text-dim);
  cursor: pointer; font-size: 18px; line-height: 1;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--cad-radius);
}
.modal-close:hover { background: var(--cad-danger); color: #fff; }
.modal-body { padding: 16px; flex: 1; overflow-y: auto; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 12px 16px; border-top: 1px solid var(--cad-border);
}
.modal-btn {
  background: var(--cad-input-bg); border: 1px solid var(--cad-input-border);
  color: var(--cad-text); font-family: var(--cad-font-ui);
  font-size: 11px; padding: 6px 16px; border-radius: var(--cad-radius);
  cursor: pointer; transition: all 0.15s;
}
.modal-btn:hover { background: var(--cad-accent-bg); border-color: var(--cad-border-hover); }
.modal-btn.primary {
  background: var(--cad-accent); border-color: var(--cad-accent);
  color: #fff; font-weight: 600;
}
.modal-btn.primary:hover { background: var(--cad-accent-hover); }

/* Modal form elements */
.modal-field { margin-bottom: 12px; }
.modal-field label {
  display: block; font-size: 10px; color: var(--cad-text-dim);
  margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px;
}
.modal-field input, .modal-field select {
  width: 100%; background: var(--cad-input-bg);
  border: 1px solid var(--cad-input-border); border-radius: 3px;
  color: var(--cad-text); font-family: var(--cad-font-mono);
  font-size: 11px; padding: 6px 8px; outline: none;
}
.modal-field input:focus, .modal-field select:focus { border-color: var(--cad-accent); }
.modal-row { display: flex; gap: 12px; }
.modal-row .modal-field { flex: 1; }

/* Help/shortcut list */
.shortcut-table {
  width: 100%; border-collapse: collapse;
}
.shortcut-table th {
  text-align: left; font-size: 10px; color: var(--cad-text-dim);
  text-transform: uppercase; padding: 4px 8px;
  border-bottom: 1px solid var(--cad-border);
}
.shortcut-table td {
  padding: 3px 8px; font-size: 11px;
  border-bottom: 1px solid var(--cad-border);
}
.shortcut-table td:first-child {
  font-weight: 600; color: var(--cad-accent); white-space: nowrap;
}

/* ── Toast ── */
#toast {
  position: fixed; bottom: 60px; left: 50%;
  transform: translateX(-50%);
  background: var(--cad-panel); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius-lg); box-shadow: var(--cad-shadow);
  padding: 8px 20px; font-size: 12px;
  color: var(--cad-text); z-index: 9800;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}
#toast.hidden { opacity: 0; transform: translateX(-50%) translateY(10px); }
#toast.error { border-color: var(--cad-danger); color: var(--cad-danger); }
#toast.success { border-color: var(--cad-success); color: var(--cad-success); }
#toast.warning { border-color: var(--cad-warning); color: var(--cad-warning); }

/* ── Tooltip ── */
.tooltip {
  position: fixed; z-index: 9950;
  background: var(--cad-panel-alt); border: 1px solid var(--cad-border);
  border-radius: var(--cad-radius); padding: 4px 8px;
  font-size: 11px; color: var(--cad-text);
  pointer-events: none; box-shadow: var(--cad-shadow);
  white-space: nowrap;
}
.tooltip .tt-shortcut { color: var(--cad-text-muted); margin-left: 8px; }

/* ── General utilities ── */
.hidden { display: none !important; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.text-accent { color: var(--cad-accent); }
.text-dim { color: var(--cad-text-dim); }