/* ═══════════════════════════════════════════════
   OWND Mock — Dark Studio Workspace
   ═══════════════════════════════════════════════ */

:root {
  --bg-deep: #0b0b0e;
  --bg-surface: #131316;
  --bg-elevated: #1a1a1f;
  --bg-hover: #222228;
  --bg-active: #2a2a32;

  --border: #27272e;
  --border-subtle: #1e1e24;
  --border-focus: #3a3a44;

  --text-primary: #eae8e4;
  --text-secondary: #8a8694;
  --text-muted: #55525e;

  --accent: #d4962a;
  --accent-light: #e8ad42;
  --accent-subtle: rgba(212, 150, 42, 0.1);
  --accent-glow: rgba(212, 150, 42, 0.25);

  --success: #3ecf74;
  --success-subtle: rgba(62, 207, 116, 0.1);
  --danger: #ef5350;
  --danger-subtle: rgba(239, 83, 80, 0.08);

  --slot-empty: rgba(255, 0, 255, 0.3);
  --slot-empty-bg: rgba(255, 0, 255, 0.03);
  --slot-selected: #d4962a;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.12s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Grain Overlay ─── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ─── Layout ─── */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ═══════════════════════════════════════════════
   Header
   ═══════════════════════════════════════════════ */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 48px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

header h1 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand-accent {
  color: var(--accent);
}

.header-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}

.btn svg { flex-shrink: 0; }

.btn--ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.btn--ghost:active {
  background: var(--bg-active);
  transform: scale(0.97);
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-deep);
  border-color: var(--accent);
  font-weight: 550;
}

.btn--primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
}

.btn--primary:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   Main Layout
   ═══════════════════════════════════════════════ */
main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════
   Sidebar — Banner Panel
   ═══════════════════════════════════════════════ */
#banner-panel {
  width: 264px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.panel-section {
  padding: 12px;
}

.panel-section--grow {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  background: var(--bg-hover);
  color: var(--text-secondary);
  padding: 1px 5px;
  border-radius: 8px;
  letter-spacing: 0;
  text-transform: none;
}

/* ─── Drop Zone ─── */
#drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 18px 12px;
  border: 1.5px dashed var(--border-focus);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

#drop-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-subtle), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

#drop-zone:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

#drop-zone:hover::before {
  opacity: 1;
}

#drop-zone.dragover {
  border-color: var(--accent);
  background: var(--bg-hover);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

#drop-zone.dragover::before {
  opacity: 1;
}

.drop-icon {
  color: var(--text-muted);
  transition: color var(--transition-base), transform var(--transition-base);
}

#drop-zone:hover .drop-icon {
  color: var(--accent);
  transform: translateY(-1px);
}

#drop-zone p {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.drop-sub {
  font-size: 10px;
  color: var(--text-muted);
  position: relative;
}

#file-input { display: none; }

/* ─── Type List ─── */
#type-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 0 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

#type-list::-webkit-scrollbar { width: 4px; }
#type-list::-webkit-scrollbar-track { background: transparent; }
#type-list::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

.empty-msg {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  padding: 24px 0;
}

/* ─── Type Items ─── */
.type-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  grid-template-rows: auto auto;
  gap: 1px 8px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  margin-bottom: 2px;
  transition: all var(--transition-fast);
  position: relative;
  cursor: pointer;
  border: 1px solid transparent;
  align-items: center;
}

.type-item:hover {
  background: var(--bg-elevated);
  border-color: var(--border);
}

.type-thumb-wrap {
  grid-row: 1;
  grid-column: 1;
  width: 48px;
  height: 34px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-thumb {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.type-thumb-empty {
  color: var(--text-muted);
  opacity: 0.4;
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-info {
  grid-row: 1;
  grid-column: 2;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.type-name {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.type-size {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.type-status {
  font-size: 9.5px;
  color: var(--text-muted);
}

.type-item.has-banner .type-status {
  color: var(--success);
}

.type-file-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.type-remove {
  grid-row: 1;
  grid-column: 3;
  width: 20px;
  height: 20px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.type-item:hover .type-remove {
  opacity: 1;
}

.type-remove:hover {
  background: var(--danger-subtle);
  color: var(--danger);
}

/* ═══════════════════════════════════════════════
   Mockup Area
   ═══════════════════════════════════════════════ */
#mockup-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-deep);
}

/* ─── Tabs ─── */
#mockup-tabs {
  display: flex;
  gap: 2px;
  padding: 6px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-muted);
}

.tab-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.tab-btn.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 550;
  border-color: var(--border);
}

.tab-device {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  opacity: 0.5;
  padding: 1px 4px;
  background: var(--bg-hover);
  border-radius: 3px;
}

.tab-btn.active .tab-device {
  background: var(--bg-active);
  opacity: 0.7;
}

/* ─── Viewport ─── */
#mockup-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(212, 150, 42, 0.03), transparent 60%),
    var(--bg-deep);
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}

#mockup-viewport::-webkit-scrollbar { width: 6px; height: 6px; }
#mockup-viewport::-webkit-scrollbar-track { background: transparent; }
#mockup-viewport::-webkit-scrollbar-thumb { background: var(--bg-active); border-radius: 4px; }

#mockup-container {
  position: relative;
  background: #fff;
  border-radius: 3px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.3),
    0 4px 16px rgba(0, 0, 0, 0.25),
    0 12px 40px rgba(0, 0, 0, 0.15);
  transition: box-shadow var(--transition-slow);
}

.mockup-image {
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  border-radius: 3px;
}

/* ─── Slot Overlays ─── */
.slot-overlay {
  position: absolute;
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
}

.slot-overlay.empty {
  outline: 1.5px dashed var(--slot-empty);
  outline-offset: -1.5px;
  background: var(--slot-empty-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-overlay.empty:hover {
  outline-color: var(--accent);
  outline-style: solid;
  background: var(--accent-subtle);
}

.slot-overlay.selected {
  outline: 2px solid var(--slot-selected) !important;
  outline-offset: -2px;
  background: rgba(212, 150, 42, 0.08) !important;
  box-shadow: 0 0 0 4px var(--accent-glow);
  z-index: 10;
}

.slot-overlay.filled {
  outline: none;
}

.slot-overlay.filled:hover {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  box-shadow: 0 0 0 3px var(--accent-glow);
  z-index: 10;
}

.slot-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: rgba(255, 0, 255, 0.5);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: 0.02em;
}

.slot-overlay.empty:hover .slot-label {
  color: var(--accent);
}

.slot-banner-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ─── Type Background Color (sidebar) ─── */
.type-bg-color {
  grid-row: 2;
  grid-column: 2 / -1;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 0;
}

.type-bg-label {
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.type-bg-color-picker {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border-focus);
  border-radius: 3px;
  padding: 0;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}

.type-bg-color-picker::-webkit-color-swatch-wrapper { padding: 1px; }
.type-bg-color-picker::-webkit-color-swatch { border: none; border-radius: 2px; }

.type-bg-hex-input {
  width: 62px;
  height: 18px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 0 4px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.type-bg-hex-input::placeholder {
  color: var(--text-muted);
}

.type-bg-hex-input:focus {
  border-color: var(--accent);
  color: var(--text-primary);
}

.slot-remove {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-overlay.filled:hover .slot-remove {
  opacity: 1;
}

.slot-remove:hover {
  background: var(--danger);
  transform: scale(1.1);
}

/* ─── Footer ─── */
#mockup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 14px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

#slot-info {
  font-size: 10.5px;
  color: var(--text-muted);
  font-weight: 450;
}

#scale-info {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

#scale-info svg {
  opacity: 0.5;
}

/* ═══════════════════════════════════════════════
   Empty / Error States
   ═══════════════════════════════════════════════ */
.mockup-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  min-width: 400px;
  color: var(--text-muted);
  gap: 12px;
  padding: 40px;
}

.mockup-empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.mockup-empty p {
  font-size: 12px;
  text-align: center;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════
   Scrollbar for banner panel
   ═══════════════════════════════════════════════ */
#banner-panel {
  scrollbar-width: thin;
  scrollbar-color: var(--bg-active) transparent;
}