/* Logo Visual Resizer - Modern UI */
:root {
  --bg-primary: #0f0f12;
  --bg-secondary: #18181c;
  --bg-tertiary: #222228;
  --border: #2d2d35;
  --text-primary: #e8e8ed;
  --text-secondary: #90909a;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

.app {
  height: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hidden {
  display: none !important;
}

.mobile-notice {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  text-align: center;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.mobile-notice.hidden {
  display: none !important;
}

.mobile-notice p {
  margin: 0;
  font-size: 1.1rem;
}

.mobile-notice-hint {
  margin-top: 0.75rem !important;
  color: var(--text-secondary);
  font-size: 0.95rem !important;
}

.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn:hover {
  background: var(--border);
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-secondary:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-small {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn-icon {
  width: 28px;
  height: 28px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-secondary);
}

.btn-icon:hover {
  color: var(--danger);
}

.btn-block {
  width: 100%;
  display: block;
}

/* Main Layout */
.main {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* Sidebar */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  height: 100%;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.sidebar-header {
  flex-shrink: 0;
  padding: 1rem 1rem 0.75rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

.sidebar-header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.sidebar-subtitle {
  margin: 0.25rem 0 0 0;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.settings-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.settings-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.settings-toggle-icon {
  font-size: 0.7rem;
}

.sidebar-controls.collapsed {
  display: none;
}

.sidebar-controls:not(.collapsed) {
  display: block;
}

.sidebar-controls h3 {
  margin: 1rem 0 0.5rem 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.sidebar-controls h3:first-child {
  margin-top: 0;
}

.sidebar-actions {
  flex-shrink: 0;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

/* Content Wrapper */
.content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Sidebar Drop Zone */
.sidebar .drop-zone {
  padding: 1.5rem;
}

.sidebar .drop-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.5rem;
}

.sidebar .drop-zone p {
  font-size: 0.85rem;
}

.sidebar .drop-hint {
  font-size: 0.75rem !important;
}

/* Empty State */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: var(--text-secondary);
  text-align: center;
}

.empty-state.hidden {
  display: none !important;
}

.empty-state p {
  margin: 0;
  font-size: 1rem;
}

.empty-state .empty-hint {
  margin-top: 0.5rem !important;
  font-size: 0.875rem !important;
  opacity: 0.8;
}

/* Drop Zone (in sidebar) */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-tertiary);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
}

.drop-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  color: var(--text-secondary);
}

.drop-zone p {
  margin: 0;
  font-size: 1rem;
}

.drop-hint {
  font-size: 0.75rem !important;
  color: var(--text-secondary) !important;
  margin-top: 0.25rem !important;
}

/* Content Area - Grid / Compare */
.content-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1rem 2rem;
  overflow-y: auto;
}

.content-area.hidden {
  display: none !important;
}

.toolbar {
  margin-bottom: 1rem;
}

.view-toggle {
  display: flex;
  gap: 0.5rem;
}

.view-toggle .btn.active {
  background: var(--accent);
  color: white;
}

.control-group {
  margin-bottom: 0.75rem;
}

.control-group label {
  display: block;
  margin-bottom: 0.25rem;
}

.control-group.inline {
  display: flex;
  gap: 1rem;
}

.control-group.inline label {
  flex: 1;
}

.control-group input[type="number"] {
  width: 80px;
  padding: 0.35rem 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.slider-label {
  display: flex !important;
  justify-content: space-between;
  font-size: 0.85rem;
}

.slider {
  width: 100%;
  min-width: 120px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-tertiary);
  border-radius: 3px;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: var(--transition);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

/* Compare View */
.compare-view {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}

.compare-view.hidden {
  display: none;
}

.compare-view-toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
}

.compare-view-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.compare-bg-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.compare-bg-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.compare-bg-options {
  display: flex;
  gap: 0.25rem;
}

.compare-bg-options .btn.active {
  background: var(--accent);
  color: white;
}

.compare-view.active ~ .logo-grid {
  display: none;
}

.compare-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2rem;
  min-height: 300px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
}

.compare-container.bg-transparent {
  background: repeating-conic-gradient(#2d2d35 0% 25%, #222228 0% 50%) 50% / 12px 12px;
}

.compare-container.bg-white {
  background: #ffffff;
}

.compare-container.bg-light {
  background: #e5e5e7;
}

.compare-container.bg-dark {
  background: var(--bg-tertiary);
}

.compare-container .resized-canvas {
  max-height: 120px;
  max-width: 200px;
}

/* Batch Indicator */
.batch-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-tertiary);
  padding: 1.5rem 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1000;
}

.batch-indicator.hidden {
  display: none;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Logo Grid */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Logo Card */
.logo-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.logo-card:hover {
  border-color: var(--accent);
}

.logo-card-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.logo-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logo-card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.manual-override-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.manual-scale {
  width: 60px;
}

.manual-scale-value {
  font-size: 0.7rem;
  color: var(--text-secondary);
  min-width: 28px;
}

.logo-preview-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
}

.logo-original,
.logo-resized {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.logo-original .label,
.logo-resized .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.preview-canvas {
  background: repeating-conic-gradient(#2d2d35 0% 25%, #222228 0% 50%) 50% / 12px 12px;
  max-width: 100%;
  border-radius: var(--radius-sm);
}

.logo-stats {
  padding: 0.5rem 1rem;
  font-size: 0.7rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
}

.control-group label input[type="radio"] {
  margin-right: 0.5rem;
}

input[type="checkbox"] {
  accent-color: var(--accent);
}

@media (max-width: 768px) {
  .main {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .logo-preview-container {
    grid-template-columns: 1fr;
  }
}