/* ============================================
   Image Resizer - Dark Theme Styles
   ============================================ */

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

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-tertiary: #242837;
    --bg-hover: #2d3145;
    --border-color: #363b50;
    --border-focus: #6c8aff;
    --text-primary: #e8eaf0;
    --text-secondary: #9ca3b4;
    --text-muted: #6b7280;
    --accent: #6c8aff;
    --accent-hover: #8ba3ff;
    --accent-bg: rgba(108, 138, 255, 0.1);
    --success: #34d399;
    --success-hover: #4ade80;
    --success-bg: rgba(52, 211, 153, 0.1);
    --danger: #f87171;
    --danger-hover: #fca5a5;
    --warning: #fbbf24;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --transition: 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.hidden { display: none !important; }

/* ---- Header ---- */
header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 28px 0;
    text-align: center;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

header .icon {
    margin-right: 6px;
}

.subtitle {
    color: var(--text-secondary);
    margin-top: 4px;
    font-size: 0.95rem;
}

/* ---- Drop Zone ---- */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    margin-top: 32px;
    background: var(--bg-secondary);
}

.drop-zone:hover,
.drop-zone:focus-visible {
    border-color: var(--accent);
    background: var(--accent-bg);
}

.drop-zone.drag-over {
    border-color: var(--accent);
    background: var(--accent-bg);
    transform: scale(1.01);
}

.drop-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.drop-text {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.drop-subtext {
    color: var(--text-secondary);
    margin-top: 4px;
}

.drop-formats {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-top: 12px;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform 0.1s;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { background: var(--bg-hover); }

.btn-success {
    background: var(--success);
    color: #0f1117;
}
.btn-success:hover { background: var(--success-hover); }

.btn-danger {
    background: transparent;
    color: var(--danger);
    padding: 6px 10px;
}
.btn-danger:hover { color: var(--danger-hover); }

.btn-sm {
    padding: 6px 12px;
    font-size: 0.82rem;
}

/* ---- Sections ---- */
section {
    margin-top: 32px;
}

section h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 0;
}

.queue-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ---- Queue ---- */
.queue-list {
    display: grid;
    gap: 10px;
}

.queue-item {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px 16px;
    transition: border-color var(--transition);
}

.queue-item:hover {
    border-color: var(--accent);
}

.queue-item.active {
    border-color: var(--accent);
    background: var(--accent-bg);
}

.queue-item.processed {
    border-color: var(--success);
}

.queue-thumb {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.queue-info {
    flex: 1;
    min-width: 0;
}

.queue-name {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.queue-meta {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 2px;
}

.queue-status {
    font-size: 0.78rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

.queue-status.pending {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.queue-status.done {
    background: var(--success-bg);
    color: var(--success);
}

.queue-item-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

/* ---- Settings ---- */
.settings-grid {
    display: grid;
    gap: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.setting-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.radio-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.88rem;
    transition: border-color var(--transition), background var(--transition);
}

.radio-option:has(input:checked) {
    border-color: var(--accent);
    background: var(--accent-bg);
}

.radio-option input {
    accent-color: var(--accent);
}

.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    cursor: pointer;
    margin-top: 4px;
}

.checkbox-option input {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

.input-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-row span {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
    height: 6px;
    cursor: pointer;
}

input[type="number"],
.select-input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 0.88rem;
    transition: border-color var(--transition);
}

input[type="number"]:focus,
.select-input:focus {
    outline: none;
    border-color: var(--border-focus);
}

.input-small { width: 72px; }
.input-medium { width: 110px; }
.dimension-x { font-weight: 700; }

.select-input {
    width: 100%;
    max-width: 320px;
    cursor: pointer;
}

/* ---- Preview ---- */
.preview-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    align-items: start;
}

.preview-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}

.preview-panel h3 {
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.preview-image-wrapper {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 8px;
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preview-image-wrapper img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
    border-radius: 4px;
}

.preview-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
}

.arrow {
    font-size: 1.6rem;
    color: var(--accent);
}

.image-info {
    margin-top: 12px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- Size Comparison ---- */
.size-comparison {
    margin-top: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
}

.comparison-bar {
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    height: 36px;
    font-size: 0.78rem;
    font-weight: 600;
}

.comparison-original {
    background: var(--bg-hover);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    white-space: nowrap;
    transition: width 0.5s ease;
}

.comparison-resized {
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    white-space: nowrap;
    transition: width 0.5s ease;
}

.savings-text {
    text-align: center;
    margin-top: 10px;
    font-size: 0.88rem;
    color: var(--success);
    font-weight: 600;
}

/* ---- Footer ---- */
footer {
    margin-top: 48px;
    padding: 24px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    header { padding: 20px 0; }
    header h1 { font-size: 1.4rem; }

    .drop-zone { padding: 40px 16px; }
    .drop-icon { font-size: 2.4rem; }

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

    .preview-divider {
        padding-top: 0;
        transform: rotate(90deg);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .radio-group {
        flex-direction: column;
    }

    .input-row {
        flex-wrap: wrap;
    }

    .queue-item {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 12px; }
    .settings-grid { padding: 16px; }

    .queue-item-actions {
        width: 100%;
        justify-content: flex-end;
    }
}