@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;600;700&family=Syne:wght@400;700;800&display=swap');

:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #1a1a24;
  --border: #2a2a3a;
  --accent: #d40000;
  --accent2: #ff6b35;
  --accent3: #ff4444;
  --text: #e8e8f0;
  --muted: #6b6b8a;
  --green: #00ff88;
}

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

body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(212,0,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,0,0,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.app {
  --right-panel-width: 50vw;
  --splitter-width: 2px;
  display: grid;
  grid-template-columns: minmax(360px, 1fr) var(--splitter-width) minmax(360px, var(--right-panel-width));
  grid-template-rows: 60px 1fr;
  height: 100vh;
  position: relative;
  z-index: 1;
}

.splitter {
  grid-column: 2;
  grid-row: 2;
  cursor: col-resize;
  position: relative;
  background: transparent;
  user-select: none;
  touch-action: none;
}

.splitter::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 100%;
  background: var(--border);
  transition: background 0.15s;
}

.splitter:hover::before,
.splitter.dragging::before {
  background: var(--accent);
}

/* HEADER */
header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,15,0.8);
  backdrop-filter: blur(12px);
  gap: 16px;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo {
  display: block;
  width: auto;
  height: 34px;
  filter: none;
}

.header-right {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.map-select {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 3px;
  padding: 6px 8px;
  min-width: 180px;
  outline: none;
}

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

.wasm-status {
  font-size: 10px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.wasm-status .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--muted);
}
.wasm-status.ready .dot { background: var(--green); }
.wasm-status.error .dot { background: #ff4444; }
.wasm-status.js-fallback .dot { background: #ffcc00; }

.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 3px;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #ff1a1a; box-shadow: 0 0 20px rgba(212,0,0,0.4); }
.btn-primary:disabled { background: var(--border); color: var(--muted); cursor: not-allowed; box-shadow: none; }

.btn-render {
  background: var(--green);
  color: #000;
  font-weight: 700;
}
.btn-render:hover { box-shadow: 0 0 20px rgba(0,255,136,0.4); }
.btn-render:disabled { background: var(--border); color: var(--muted); cursor: not-allowed; box-shadow: none; }

/* SCENE PANEL (left) */
.scene-panel {
  grid-column: 1;
  grid-row: 2;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scene-panel::-webkit-scrollbar { width: 4px; }
.scene-panel::-webkit-scrollbar-track { background: transparent; }
.scene-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.section-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

/* CARDS */
.object-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.card-header {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  cursor: pointer;
  gap: 10px;
  user-select: none;
}

.card-icon { font-size: 14px; width: 24px; text-align: center; }
.card-title { font-size: 12px; font-weight: 600; flex: 1; }
.card-type { font-size: 10px; color: var(--muted); }

.card-body {
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 10px;
}

.field-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  align-items: center;
  gap: 8px;
}

.field-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.field-inputs { display: flex; gap: 4px; }

input[type="number"], input[type="text"], input[type="range"] {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 2px;
  padding: 4px 6px;
  width: 100%;
  transition: border-color 0.15s;
  outline: none;
}
input[type="number"]:focus, input[type="text"]:focus { border-color: var(--accent); }

input[type="range"] {
  padding: 0; height: 4px; cursor: pointer; accent-color: var(--accent);
}

input[type="color"] {
  width: 32px; height: 26px; border: 1px solid var(--border);
  border-radius: 2px; cursor: pointer; background: none; padding: 1px;
}

.range-row { display: flex; align-items: center; gap: 8px; }
.range-val { font-size: 11px; color: var(--accent); min-width: 36px; text-align: right; }

.resolution-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
}

.resolution-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.resolution-row .field-row {
  grid-template-columns: auto 1fr;
}

.settings-card {
  border-left: 3px solid var(--accent);
}

.color-row { display: flex; gap: 6px; align-items: center; }
.color-rgb { flex: 1; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 4px; }

#lineColorRow.disabled {
  opacity: 0.45;
}

#lineColorRow.disabled .color-row {
  pointer-events: none;
}

.gradient-toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text);
}

.gradient-toggle-row input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
}

.gradient-panel {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px;
  display: grid;
  gap: 8px;
  background: rgba(255,255,255,0.02);
}

.gradient-panel.hidden {
  display: none;
}

/* FDF EDITOR */
.fdf-editor-card {
  border-left: 3px solid var(--accent);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.fdf-editor-card .card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.fdf-textarea {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 2px;
  padding: 8px;
  width: 100%;
  flex: 1;
  min-height: 200px;
  resize: vertical;
  outline: none;
  line-height: 1.6;
  tab-size: 2;
}
.fdf-textarea:focus { border-color: var(--accent); }

/* OUTPUT PANEL (right) */
.output-panel {
  grid-column: 3;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  background: var(--surface);
}

.render-header {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}

/* CODE TAB */
.output-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}

.output-title {
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 1px; color: var(--muted); flex: 1;
}

.live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green); animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.output-code {
  flex: 1; overflow-y: auto; padding: 16px;
  font-size: 11px; line-height: 1.7; white-space: pre; color: #c6a8ca;
  width: 100%; margin: 0; border: none; resize: none; outline: none;
  background: #121218; font-family: 'JetBrains Mono', monospace;
}
.output-code::-webkit-scrollbar { width: 4px; }
.output-code::-webkit-scrollbar-thumb { background: var(--border); }

.output-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}

/* RENDER TAB */
.render-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  gap: 16px;
  overflow: auto;
}

.render-canvas-wrapper {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}

#renderCanvas {
  display: block;
  max-width: 100%;
  height: auto;
  image-rendering: auto;
}

.render-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 10;
}
.render-overlay.hidden { display: none; }

.render-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.render-overlay-text {
  font-size: 12px; color: var(--accent);
}

.render-info {
  font-size: 10px;
  color: var(--muted);
  text-align: center;
}

.render-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}
.render-empty .icon { font-size: 36px; }

.camera-controls {
  display: grid;
  grid-template-columns: 44px 44px 44px;
  grid-template-rows: 44px 44px 36px;
  gap: 8px;
  justify-items: center;
  align-items: center;
}

.camera-btn {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface2);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.camera-btn:hover {
  border-color: var(--accent);
  color: var(--accent3);
  background: rgba(212,0,0,0.08);
}

.camera-up { grid-column: 2; grid-row: 1; }
.camera-left { grid-column: 1; grid-row: 2; }
.camera-right { grid-column: 3; grid-row: 2; }
.camera-down { grid-column: 2; grid-row: 2; }
.camera-reset {
  grid-column: 1 / 4;
  grid-row: 3;
  width: 100%;
  height: 36px;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}


/* Notification */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface2); border: 1px solid var(--accent);
  color: var(--accent); padding: 10px 16px; border-radius: 4px;
  font-size: 11px; opacity: 0; transform: translateY(8px);
  transition: all 0.3s; z-index: 100;
}
.toast.show { opacity: 1; transform: translateY(0); }

.btn-copy-compact { padding: 4px 10px; font-size: 10px; }
.hidden-file-input { display: none; }
.flex-fill { flex: 1; }

kbd {
  background-color: #333; border-radius: 3px; border: 1px solid #666;
  box-shadow: 0 1px 0 #666, 0 1px 0 1px rgba(255,255,255,0.1);
  color: #fff; display: inline-block; font-size: 1em;
  line-height: 1.4; padding: 2px 6px; margin: 0 2px; white-space: nowrap;
}

/* TUTORIAL */
.tutorial-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
}
.tutorial-overlay.active { display: block; }

.tutorial-highlight {
  position: relative;
  z-index: 1001;
  border-radius: 4px;
  box-shadow:
    0 0 0 4px var(--accent),
    0 0 0 9999px rgba(0,0,0,0.75);
  pointer-events: auto;
}

.tutorial-tooltip {
  position: fixed;
  z-index: 1002;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 20px;
  max-width: 340px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 20px rgba(212,0,0,0.2);
  pointer-events: auto;
  transition: left 0.14s ease-out, top 0.14s ease-out;
}

.tutorial-step-indicator {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.tutorial-step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
}
.tutorial-step-dot.active { background: var(--accent); }
.tutorial-step-dot.done { background: var(--muted); }

.tutorial-title {
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.tutorial-text {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 16px;
}

.tutorial-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tutorial-nav {
  display: flex;
  gap: 8px;
}

.tutorial-skip {
  font-size: 10px;
  padding: 4px 10px;
}

.tutorial-next {
  font-size: 11px;
  padding: 6px 18px;
}

/* Example map select dropdown in panel */
.map-select-panel {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 2px;
  padding: 6px 8px;
  width: 100%;
  cursor: pointer;
  transition: border-color 0.15s;
  outline: none;
}
.map-select-panel:hover { border-color: var(--accent); }
.map-select-panel:focus { border-color: var(--accent); }

@media (max-width: 1100px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: 60px auto auto;
    height: auto;
    min-height: 100vh;
  }

  .splitter {
    display: none;
  }

  .scene-panel,
  .output-panel {
    min-height: 50vh;
  }

  .output-panel {
    grid-column: 1;
    grid-row: 3;
  }
}