:root {
    --bg-color: #0f1115;
    --panel-bg: #1a1d24;
    --border-color: #2a2e37;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --danger-color: #ef4444;
    --success-color: #10b981;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

input, select {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

input:focus, select:focus {
    border-color: var(--accent-color);
}

.filter-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stats {
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.image-list {
    flex: 1;
    overflow-y: auto;
}

.list-item {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.list-item:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.list-item.active {
    background-color: rgba(59, 130, 246, 0.15);
    border-left: 4px solid var(--accent-color);
}

.item-id {
    font-weight: 500;
    font-size: 0.95rem;
}

.item-metrics {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.navbar {
    height: 70px;
    padding: 0 24px;
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-left h1 {
    font-size: 1.2rem;
    font-weight: 500;
}

.psnr-badge {
    padding: 4px 10px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.category-select {
    width: auto;
    min-width: 120px;
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
}

/* Settings Dropdown */
.settings-container {
    position: relative;
}

.settings-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    background-color: rgba(255, 255, 255, 0.05);
}

.settings-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
}

.settings-btn.active {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
}

.settings-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 320px;
    background-color: rgba(26, 29, 36, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    z-index: 100;
    display: none;
    flex-direction: column;
    gap: 20px;
    animation: slideDown 0.2s ease-out;
}

.settings-dropdown.show {
    display: flex;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.settings-group h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 600;
}

.model-selection-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.vs-text {
    align-self: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-color);
    padding: 2px 8px;
    border-radius: 4px;
}

.toggle-row {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.switch-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

/* The switch - the box around the slider */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 22px;
}

/* Hide default HTML checkbox */
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

/* The slider */
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #334155;
  transition: .4s;
  border-radius: 22px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-color);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--accent-color);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

.btn-block {
    width: 100%;
    margin-bottom: 8px;
}

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

.btn-outline:hover {
    border-color: var(--accent-color);
    color: var(--text-primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 0.8rem;
}

.btn {
    padding: 8px 16px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn:active {
    transform: scale(0.98);
}

.btn.active-toggle {
    background-color: var(--danger-color);
}

.btn.active-toggle:hover {
    background-color: #f87171;
}

/* Viewer Container */
.viewer-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 16px;
    gap: 16px;
}

.split-view {
    flex: 2;
    display: flex;
    gap: 16px;
    min-height: 0; /* Important for flex child overflow */
}

.panel {
    flex: 1;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.panel-header {
    padding: 10px 16px;
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
    z-index: 2;
}

.canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: grab;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000;
}

.canvas-container:active {
    cursor: grabbing;
}

canvas {
    transform-origin: 0 0;
}

/* Bottom Grids */
.bottom-grids {
    flex: 1;
    display: flex;
    gap: 16px;
    min-height: 0;
}

.grid-panel {
    flex: 1;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.img-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background-color: #000;
}

.img-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.grid-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.load-grid-btn {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 20px;
}

.load-grid-btn:hover {
    background-color: var(--bg-color);
    border-color: var(--accent-color);
}

/* Voting Panel */
.voting-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    gap: 16px;
}

.vote-buttons {
    display: flex;
    gap: 10px;
    flex: 1;
}

.vote-btn {
    flex: 1;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.vote-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.vote-btn.selected {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.comment-section {
    display: flex;
    gap: 10px;
    flex: 1;
}

#voteComment {
    flex: 1;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    height: 38px;
    outline: none;
}

#voteComment:focus {
    border-color: var(--accent-color);
}

.vote-indicator {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-top: 4px;
}

.vote-m1 { background-color: rgba(59, 130, 246, 0.2); color: #60a5fa; border: 1px solid #3b82f6; }
.vote-m2 { background-color: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid #10b981; }
.vote-tie { background-color: rgba(107, 114, 128, 0.2); color: #9ca3af; border: 1px solid #6b7280; }

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}