:root {
  --belka: #F97316;
  --belka-hover: #EA580C;
  --belka-glow: rgba(249, 115, 22, 0.3);
  --strelka: #3B82F6;
  --strelka-hover: #2563EB;
  --strelka-glow: rgba(59, 130, 246, 0.25);
  --bg: #0B1120;
  --bg-raised: #0F172A;
  --glass-bg: rgba(15, 23, 42, 0.85);
  --glass-border: rgba(255, 255, 255, 0.06);
  --text: #F1F5F9;
  --text-muted: #64748B;
  --text-dim: #475569;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 10px;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Title Bar ── */
#titlebar {
  display: flex;
  align-items: center;
  height: 48px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
  z-index: 100;
  padding: 0 16px;
}

#titlebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

#titlebar-logo {
  height: 28px;
  width: auto;
  border-radius: 4px;
}

#titlebar-text {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.3px;
}

.titlebar-sep {
  width: 1px;
  height: 20px;
  background: var(--glass-border);
  margin: 0 8px;
}

#titlebar-version {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.brand-dots {
  display: flex;
  gap: 4px;
  margin-right: 4px;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.brand-dot.belka { background: var(--belka); box-shadow: 0 0 6px var(--belka-glow); }
.brand-dot.strelka { background: var(--strelka); box-shadow: 0 0 6px var(--strelka-glow); }

/* ── App Layout ── */
#app {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Left Toolbar ── */
#toolbar {
  width: 220px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--glass-border);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-shrink: 0;
}

.tool-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

#preset-dropdown {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s;
}

#preset-dropdown:hover { border-color: rgba(255,255,255,0.12); }
#preset-dropdown:focus { border-color: var(--strelka); }

#preset-dropdown option {
  background: var(--bg-raised);
  color: var(--text);
}

.tool-btn {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg-raised);
  color: var(--text);
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-btn:hover {
  border-color: var(--strelka);
  color: var(--strelka);
  background: rgba(59, 130, 246, 0.06);
}

.tool-btn.primary {
  background: var(--belka);
  color: white;
  border: none;
  font-weight: 600;
  justify-content: center;
  gap: 6px;
}

.tool-btn.primary:hover {
  background: var(--belka-hover);
  box-shadow: 0 0 20px var(--belka-glow);
  color: white;
}

.tool-btn.danger {
  color: #EF4444;
}

.tool-btn.danger:hover {
  border-color: #EF4444;
  color: #EF4444;
  background: rgba(239, 68, 68, 0.06);
}

.tool-btn-icon {
  font-size: 15px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

#transform-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#transform-actions .tool-btn {
  padding: 8px 14px;
}

.transform-row {
  display: flex;
  gap: 6px;
}

.transform-row .tool-btn {
  flex: 1;
  text-align: center;
  justify-content: center;
  font-size: 16px;
  padding: 8px;
}

.toolbar-divider {
  height: 1px;
  background: var(--glass-border);
  margin: 2px 0;
}

.toolbar-spacer {
  flex: 1;
}

.toolbar-footer {
  padding-top: 4px;
  border-top: 1px solid var(--glass-border);
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.5px;
}

.hint-text {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.4;
  padding: 2px 0;
}

/* ── Canvas Area ── */
#canvas-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 30% 50%, rgba(59, 130, 246, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 70% 60%, rgba(249, 115, 22, 0.03) 0%, transparent 70%),
    var(--bg);
}

#canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

#fabric-canvas {
  border-radius: 8px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 8px 32px rgba(0, 0, 0, 0.5),
    0 2px 8px rgba(0, 0, 0, 0.3);
}