/* ── Image Format Converter ─────────────────────────────────────────────────
   Shared CSS for all 5 image converter pages.
   ───────────────────────────────────────────────────────────────────────── */

/* ── Privacy Badge ───────────────────────────────────────────────────────── */
.ic-privacy-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 20px;
    color: #059669;
    font-size: var(--text-xs);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

/* ── Mode Tabs ───────────────────────────────────────────────────────────── */
.ic-mode-tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--space-5);
    border-bottom: 2px solid var(--color-border);
}

.ic-mode-tab {
    padding: 9px 20px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
    font-family: var(--font-body);
}

.ic-mode-tab:hover { color: var(--color-text); }

.ic-mode-tab.is-active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ── Mode Panels ─────────────────────────────────────────────────────────── */
.ic-panel { display: none; }
.ic-panel.is-active { display: block; }

/* ── Drop Zone ───────────────────────────────────────────────────────────── */
.ic-dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-10) var(--space-6);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
    background: var(--color-surface-alt);
}

.ic-dropzone:hover,
.ic-dropzone.is-drag-over {
    border-color: var(--color-accent);
    background: rgba(59, 130, 246, 0.04);
    border-style: solid;
}

.ic-dropzone__icon {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: var(--space-3);
    display: block;
}

.ic-dropzone__title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.ic-dropzone__sub {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
}

.ic-dropzone__formats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    justify-content: center;
    margin-bottom: var(--space-3);
}

.ic-dropzone__fmt-badge {
    padding: 2px 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.ic-dropzone__hint {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    opacity: 0.8;
}

.ic-dropzone__input {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    font-size: 0;
}

.ic-dropzone__error {
    display: none;
    margin-top: var(--space-3);
    padding: 8px 14px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    color: #dc2626;
    font-size: var(--text-sm);
}

/* ── Workspace (shown after upload) ──────────────────────────────────────── */
.ic-workspace {
    display: none;
    margin-top: var(--space-5);
}

.ic-workspace.is-visible { display: block; }

.ic-workspace-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

/* ── Info Panel ──────────────────────────────────────────────────────────── */
.ic-info-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.ic-panel-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.ic-panel-title i { color: var(--color-accent); }

.ic-info-thumb {
    width: 100%;
    max-height: 130px;
    object-fit: contain;
    border-radius: var(--radius-md);
    background: repeating-conic-gradient(#e5e7eb 0% 25%, #f9fafb 0% 50%) 0 0 / 16px 16px;
    margin-bottom: var(--space-3);
    display: block;
}

.ic-info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3px 10px;
    font-size: var(--text-xs);
}

.ic-info-label {
    color: var(--color-text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.ic-info-value {
    color: var(--color-text);
    font-weight: 600;
    word-break: break-word;
}

.ic-transparency-warn {
    display: none;
    margin-top: var(--space-3);
    padding: 7px 10px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-md);
    color: #d97706;
    font-size: var(--text-xs);
    font-weight: 500;
    line-height: 1.4;
}

/* ── Settings Panel ──────────────────────────────────────────────────────── */
.ic-settings-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.ic-format-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.ic-format-btn {
    padding: 6px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-alt);
    color: var(--color-text-secondary);
    font-size: var(--text-xs);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-body);
    letter-spacing: 0.04em;
}

.ic-format-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.ic-format-btn.is-active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* ── Quality Slider ──────────────────────────────────────────────────────── */
.ic-quality-row { display: none; }
.ic-quality-row.is-visible { display: block; }

.ic-quality-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
}

.ic-quality-label { font-weight: 600; color: var(--color-text); }
.ic-quality-value { font-weight: 700; color: var(--color-accent); font-size: var(--text-sm); }

.ic-quality-slider {
    width: 100%;
    accent-color: var(--color-accent);
    cursor: pointer;
    height: 4px;
}

.ic-est-size {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
    min-height: 16px;
}

/* ── Advanced Options ────────────────────────────────────────────────────── */
.ic-advanced-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    border: none;
    background: none;
    padding: 0;
    font-family: var(--font-body);
    text-align: left;
}

.ic-advanced-toggle i { transition: transform 0.2s; }
.ic-advanced-toggle.is-open i { transform: rotate(180deg); }

.ic-advanced-body {
    display: none;
    padding: var(--space-3);
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.ic-advanced-body.is-open { display: block; }

.ic-adv-field {
    margin-bottom: var(--space-3);
}

.ic-adv-field:last-child { margin-bottom: 0; }

.ic-adv-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
    display: block;
}

.ic-adv-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.ic-adv-input {
    width: 80px;
    padding: 5px 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-mono);
    outline: none;
}

.ic-adv-input:focus { border-color: var(--color-accent); }

.ic-adv-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    cursor: pointer;
}

.ic-adv-check input[type="checkbox"] {
    accent-color: var(--color-accent);
    cursor: pointer;
}

.ic-bg-selector {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    flex-wrap: wrap;
}

.ic-bg-btn {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.15s, transform 0.15s;
}

.ic-bg-btn:hover { transform: scale(1.15); }
.ic-bg-btn.is-active { border-color: var(--color-accent); }
.ic-bg-btn--white { background: #fff; border-color: #d1d5db; }
.ic-bg-btn--white.is-active { border-color: var(--color-accent); }
.ic-bg-btn--black { background: #111; }

.ic-bg-custom {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.ic-bg-color-input {
    width: 26px;
    height: 26px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    background: none;
}

.ic-transparency-msg {
    display: none;
    padding: 7px 10px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-sm);
    color: #d97706;
    font-size: var(--text-xs);
    font-weight: 500;
    margin-top: var(--space-2);
    line-height: 1.4;
}

/* ── Convert Button ──────────────────────────────────────────────────────── */
.ic-convert-btn {
    width: 100%;
    padding: 12px;
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: var(--text-sm);
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.15s, transform 0.15s;
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: auto;
}

.ic-convert-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.ic-convert-btn:active { transform: none; }
.ic-convert-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.ic-convert-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: ic-spin 0.6s linear infinite;
    flex-shrink: 0;
}

.ic-convert-btn.is-loading .ic-convert-spinner { display: block; }
.ic-convert-btn.is-loading .ic-convert-icon { display: none; }

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

.ic-reset-link {
    display: none;
    text-align: center;
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

.ic-reset-link a {
    color: var(--color-accent);
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
}

/* ── Comparison Area ─────────────────────────────────────────────────────── */
.ic-comparison-area {
    display: none;
    margin-top: var(--space-5);
}

.ic-comparison-area.is-visible { display: block; }

.ic-comparison-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.ic-comp-label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ic-comp-label-meta {
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    color: var(--color-text-secondary);
}

/* ── Comparison Slider ───────────────────────────────────────────────────── */
.ic-comparison-slider {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: repeating-conic-gradient(#e5e7eb 0% 25%, #f9fafb 0% 50%) 0 0 / 16px 16px;
    cursor: ew-resize;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.ic-comp-img--original {
    display: block;
    width: 100%;
    max-height: 440px;
    object-fit: contain;
    position: relative;
    z-index: 1;
}

.ic-comp-img--converted {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 2;
}

.ic-comp-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #fff;
    z-index: 4;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.35);
    transform: translateX(-50%);
    pointer-events: none;
}

.ic-comp-handle-knob {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 38px;
    height: 38px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 13px;
    z-index: 5;
    pointer-events: none;
}

.ic-comp-label-overlay {
    position: absolute;
    top: var(--space-2);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    z-index: 3;
    pointer-events: none;
    letter-spacing: 0.04em;
}

.ic-comp-label-overlay--left { left: var(--space-2); }
.ic-comp-label-overlay--right { right: var(--space-2); }

/* ── Size Bars ───────────────────────────────────────────────────────────── */
.ic-size-bars {
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.ic-size-bar-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
}

.ic-size-bar-row:last-of-type { margin-bottom: 0; }

.ic-size-bar-label {
    width: 52px;
    font-weight: 600;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.ic-size-bar-track {
    flex: 1;
    height: 10px;
    background: var(--color-surface-alt);
    border-radius: 5px;
    overflow: hidden;
}

.ic-size-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 1.1s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0%;
}

.ic-size-bar-fill--before { background: linear-gradient(90deg, #3b82f6, #06b6d4); }
.ic-size-bar-fill--after  { background: linear-gradient(90deg, #10b981, #34d399); }

.ic-size-bar-num {
    width: 68px;
    text-align: right;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    flex-shrink: 0;
}

.ic-savings-badge {
    display: none;
    text-align: center;
    margin-top: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    color: #059669;
    font-size: var(--text-sm);
    font-weight: 700;
}

.ic-savings-badge.is-visible { display: block; }

/* ── Action Buttons Row ──────────────────────────────────────────────────── */
.ic-action-row {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-top: var(--space-4);
}

.ic-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 9px 16px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-body);
    border: 1.5px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

.ic-action-btn--primary {
    background: var(--gradient-accent);
    color: #fff;
    border-color: transparent;
}

.ic-action-btn--primary:hover { opacity: 0.9; color: #fff; }

.ic-action-btn--outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.ic-action-btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ── Quality Chart ───────────────────────────────────────────────────────── */
.ic-quality-chart-section {
    display: none;
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.ic-quality-chart-section.is-visible { display: block; }

.ic-chart-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.ic-chart-title i { color: var(--color-accent); }
.ic-chart-svg { width: 100%; overflow: visible; display: block; }

/* ── Batch Panel ─────────────────────────────────────────────────────────── */
.ic-batch-dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
    background: var(--color-surface-alt);
    margin-bottom: var(--space-4);
}

.ic-batch-dropzone:hover,
.ic-batch-dropzone.is-drag-over {
    border-color: var(--color-accent);
    background: rgba(59, 130, 246, 0.04);
    border-style: solid;
}

.ic-batch-settings {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

.ic-batch-settings select {
    padding: 5px 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: var(--text-xs);
    font-family: var(--font-body);
    outline: none;
    cursor: pointer;
}

.ic-batch-queue { display: none; }
.ic-batch-queue.is-visible { display: block; }

.ic-batch-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-xs);
}

.ic-batch-table th {
    padding: 8px 10px;
    background: var(--color-surface-alt);
    border-bottom: 2px solid var(--color-border);
    font-weight: 700;
    color: var(--color-text-secondary);
    text-align: left;
    white-space: nowrap;
}

.ic-batch-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    vertical-align: middle;
}

.ic-batch-table tr:last-child td { border-bottom: none; }

.ic-batch-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

.ic-batch-status--done { color: #10b981; }
.ic-batch-status--processing { color: var(--color-accent); }
.ic-batch-status--waiting { color: var(--color-text-secondary); }
.ic-batch-status--error { color: #ef4444; }

.ic-batch-progress-mini {
    width: 70px;
    height: 4px;
    background: var(--color-surface-alt);
    border-radius: 2px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-left: 4px;
}

.ic-batch-progress-mini-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 2px;
    transition: width 0.3s;
}

.ic-batch-dl-btn {
    padding: 3px 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-accent);
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.15s;
}

.ic-batch-dl-btn:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.ic-batch-overall {
    display: none;
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.ic-batch-overall.is-visible { display: block; }

.ic-overall-bar-track {
    width: 100%;
    height: 8px;
    background: var(--color-surface-alt);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--space-2) 0;
}

.ic-overall-bar-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 4px;
    transition: width 0.4s ease;
    width: 0%;
}

.ic-batch-meta {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.ic-batch-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-top: var(--space-4);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .ic-workspace-row {
        grid-template-columns: 1fr;
    }

    .ic-comp-img--original {
        max-height: 300px;
    }

    .ic-action-row {
        flex-direction: column;
    }

    .ic-action-btn {
        width: 100%;
        justify-content: center;
    }

    .ic-batch-table th:nth-child(5),
    .ic-batch-table td:nth-child(5) {
        display: none;
    }
}

@media (max-width: 480px) {
    .ic-dropzone {
        padding: var(--space-6) var(--space-3);
    }

    .ic-dropzone__icon { font-size: 2rem; }
    .ic-dropzone__title { font-size: var(--text-base); }
    .ic-size-bar-label { width: 44px; }
    .ic-size-bar-num { width: 56px; }
    .ic-mode-tab { padding: 8px 14px; font-size: var(--text-xs); }
}