:root {
    /* Colors */
    --bg-color: #f4f6f8;
    --panel-bg: #ffffff;
    --text-main: #2d3748;
    --text-muted: #718096;
    --text-light: #a0aec0;
    --border-color: #e2e8f0;
    --border-strong: #cbd5e0;

    /* Brand Colors */
    --primary: #3182ce;
    --primary-hover: #2c5282;
    --primary-light: #ebf4ff;

    /* Semantic Colors */
    --success: #38a169;
    --success-light: #c6f6d5;
    --danger: #e53e3e;
    --danger-light: #fed7d7;
    --warning: #d69e2e;

    /* Spacing */
    --space-xs: 5px;
    --space-sm: 10px;
    --space-md: 15px;
    --space-lg: 20px;
    --space-xl: 40px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;

    /* Border Radius */
    --radius: 3px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-sm) 0;
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: var(--font-size-xl); letter-spacing: -0.5px; }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-md); }

p {
    margin: 0 0 var(--space-sm) 0;
}

/* --- Layout --- */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.container--narrow {
    max-width: 900px;
}

/* --- Top Bar / Navbar --- */
.top-bar {
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    font-weight: 700;
    font-size: var(--font-size-md);
    text-decoration: none;
    color: var(--text-main);
}

.brand:hover {
    text-decoration: none;
}

.brand span {
    color: var(--text-muted);
    font-weight: 400;
}

/* --- Buttons --- */
button, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: 8px 16px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    border: 1px solid var(--primary);
}

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

.btn-primary:active {
    background-color: #2c5aa0;
    border-color: #2c5aa0;
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--panel-bg);
    color: var(--text-main);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
    background-color: #f7fafc;
    border-color: var(--text-muted);
}

.btn-secondary:active {
    background-color: #e2e8f0;
    border-color: var(--text-main);
    transform: translateY(1px);
}

.btn-icon {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    font-weight: 400;
}

.btn-icon:hover {
    background-color: #f7fafc;
    border-color: var(--border-strong);
}

.btn-icon:active {
    background-color: #e2e8f0;
    transform: translateY(1px);
}

.btn-remove {
    border: none !important;
}

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

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
    border: 1px solid var(--danger);
}

.btn-danger:hover {
    background-color: #c53030;
    border-color: #c53030;
}

.btn-danger:active {
    background-color: #9b2c2c;
    border-color: #9b2c2c;
    transform: translateY(1px);
}

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

/* Highlight entire row when hovering over remove button */
tr:has(.btn-remove:hover) {
    background-color: #fed7d7;
}

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
    border: 1px solid var(--danger);
}

.btn-danger:hover {
    background-color: #c53030;
}

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

/* --- Form Elements --- */
label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: var(--text-main);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="url"],
textarea,
select {
    display: block;
    width: 100%;
    padding: 8px 10px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-main);
    background-color: var(--panel-bg);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    margin-right: var(--space-xs);
}

input[type="range"] {
    width: 100%;
    cursor: pointer;
}

select {
    cursor: pointer;
}

/* Inline select (for tables) */
.select-inline {
    display: inline-block;
    width: auto;
    min-width: 80px;
}

/* Inline input */
.input-inline {
    display: inline-block;
    width: auto;
}

/* --- Fieldset --- */
fieldset {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin: 0 0 var(--space-md) 0;
    background: var(--panel-bg);
}

legend {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0 var(--space-xs);
}

.form-row {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-group {
    flex: 1;
}

.form-group label {
    margin-bottom: 4px;
}

.form-inline {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.form-inline label {
    margin-bottom: 0;
    font-weight: 400;
}

.form-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
    border-radius: var(--radius);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
    line-height: 1.4;
}

/* --- Panels --- */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
}

/* --- Control Bar --- */
.controls {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.controls--single-row {
    flex-wrap: nowrap;
    gap: var(--space-lg);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-base);
}

.control-group label {
    margin-bottom: 0;
    white-space: nowrap;
}

.control-group select,
.control-group input[type="text"] {
    width: auto;
    min-width: 80px;
}

/* Inline slider */
.slider-inline {
    width: 80px;
    min-width: 80px;
    cursor: pointer;
}

.slider-value {
    min-width: 36px;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-align: right;
}

/* Small button variant */
.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-sm);
}

.controls-spacer {
    flex-grow: 1;
}

/* --- Drop Zone --- */
.drop-zone {
    border: 2px dashed var(--border-strong);
    background-color: #fafbfc;
    border-radius: var(--radius);
    padding: var(--space-xl);
    text-align: center;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone--active {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.drop-zone__text {
    font-size: var(--font-size-base);
}

.drop-zone__subtext {
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
    color: var(--text-light);
}

.drop-zone__hint {
    font-size: calc(var(--font-size-sm) * 0.9);
    margin-top: calc(var(--space-xs) * 0.8);
    color: var(--text-light);
    opacity: 0.8;
}

.drop-zone input[type="file"] {
    display: none;
}

/* --- Full-Screen Drag Overlay --- */
.drag-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.drag-overlay[hidden] {
    display: none;
}

.drag-overlay-content {
    text-align: center;
    color: #ffffff;
}

.drag-overlay-icon {
    font-size: 64px;
    margin-bottom: var(--space-md);
}

.drag-overlay-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: 1px;
}

/* --- File Table (Batch Processing) --- */
.file-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.file-table th {
    text-align: left;
    background: #f8fafc;
    padding: 12px var(--space-md);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.file-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid #edf2f7;
    font-size: var(--font-size-base);
    vertical-align: middle;
}

.file-table tbody tr:last-child td {
    border-bottom: none;
}

.file-table tbody tr:hover {
    background-color: #fafbfc;
}

.file-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.file-thumbnail {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.file-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.file-name {
    font-weight: 500;
    word-break: break-word;
}

.file-size {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

.action-group {
    display: flex;
    gap: var(--space-xs);
}

/* Status indicators */
.status-ready { color: var(--text-muted); }
.status-processing { color: var(--primary); font-weight: 500; }
.status-done { color: var(--success); font-weight: 500; }
.status-error { color: var(--danger); font-weight: 500; }

/* --- Tool Grid (Index Page) --- */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.tool-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-lg);
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-card:hover {
    border-color: var(--primary);
    text-decoration: none;
}

.tool-card--disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.tool-title {
    font-weight: 600;
    font-size: var(--font-size-md);
    margin-bottom: var(--space-xs);
    color: var(--primary);
}

.tool-card--disabled .tool-title {
    color: var(--text-muted);
}

.tool-desc {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-overlay[hidden] {
    display: none;
}

.modal {
    background: var(--panel-bg);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    margin: var(--space-lg);
}

.modal-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-main);
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
    background: #f8fafc;
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* --- Page Header --- */
.page-header {
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--space-lg);
}

.page-header h1 {
    margin-bottom: var(--space-xs);
}

.subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-base);
    margin: 0;
}

/* --- Footer --- */
.footer {
    margin-top: var(--space-xl);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-lg);
}

/* --- Utility Classes --- */
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }

.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.hidden { display: none !important; }

/* --- Success Button (Download) --- */
.btn-success {
    background-color: var(--success);
    color: #ffffff;
    border: 1px solid var(--success);
    font-weight: 600;
}

.btn-success:hover {
    background-color: #2f855a;
    border-color: #2f855a;
}

.btn-success:active {
    background-color: #276749;
    border-color: #276749;
    transform: translateY(1px);
}

/* --- Fieldset with Toggle --- */
.fieldset-toggle {
    position: relative;
}

.fieldset-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.fieldset-header label {
    margin-bottom: 0;
    font-weight: 500;
    cursor: pointer;
}

.fieldset-content {
    transition: opacity 0.15s;
}

.fieldset-content.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.fieldset-content.disabled input,
.fieldset-content.disabled select,
.fieldset-content.disabled button {
    background-color: #f0f0f0;
}

/* --- Visual Crop Tool --- */
.crop-preview-container {
    position: relative;
    margin-top: var(--space-sm);
    margin-bottom: var(--space-md);
    background: #1a1a1a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.crop-preview-container.empty {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.crop-preview-wrapper {
    position: relative;
    display: inline-block;
    max-width: 100%;
    max-height: 300px;
}

.crop-preview-image {
    display: block;
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
}

.crop-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    cursor: crosshair;
}

.crop-selection {
    position: absolute;
    border: 2px solid var(--primary);
    background: rgba(49, 130, 206, 0.2);
    box-sizing: border-box;
}

.crop-selection::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px dashed #ffffff;
}

/* Crop resize handles */
.crop-handle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border: 1px solid #ffffff;
    box-sizing: border-box;
}

.crop-handle--nw { top: -5px; left: -5px; cursor: nw-resize; }
.crop-handle--ne { top: -5px; right: -5px; cursor: ne-resize; }
.crop-handle--sw { bottom: -5px; left: -5px; cursor: sw-resize; }
.crop-handle--se { bottom: -5px; right: -5px; cursor: se-resize; }
.crop-handle--n { top: -5px; left: 50%; transform: translateX(-50%); cursor: n-resize; }
.crop-handle--s { bottom: -5px; left: 50%; transform: translateX(-50%); cursor: s-resize; }
.crop-handle--w { top: 50%; left: -5px; transform: translateY(-50%); cursor: w-resize; }
.crop-handle--e { top: 50%; right: -5px; transform: translateY(-50%); cursor: e-resize; }

/* Move cursor when hovering over selection interior */
.crop-selection.movable {
    cursor: move;
}

.crop-dim-overlay {
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

/* Crop mode toggle */
.crop-mode-toggle {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.crop-mode-toggle .btn {
    flex: 1;
    padding: 6px 12px;
    font-size: var(--font-size-sm);
}

.crop-mode-toggle .btn.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

/* --- Output Resolution Preview --- */
.output-preview {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
}

.output-preview-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-main);
}

.output-preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs) var(--space-md);
    margin-bottom: var(--space-sm);
}

.output-preview-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.output-label {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

.output-value {
    font-weight: 500;
    color: var(--text-main);
    font-family: monospace;
    font-size: var(--font-size-xs);
    text-align: right;
}

.output-preview-pipeline {
    color: var(--text-muted);
    font-family: monospace;
    font-size: var(--font-size-xs);
    line-height: 1.6;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
}

.output-preview-result {
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
    font-weight: 500;
    color: var(--primary);
}

/* --- File Row Tooltip --- */
.file-tooltip {
    position: fixed;
    z-index: 100;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-sm) var(--space-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-size: var(--font-size-xs);
    min-width: 220px;
    max-width: 300px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}

.file-tooltip.visible {
    opacity: 1;
}

/* --- Status Cell with Tooltip --- */
.status-cell {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: help;
}

.tooltip-icon {
    color: var(--text-light);
    font-size: 14px;
    opacity: 0.6;
}

.status-cell:hover .tooltip-icon {
    opacity: 1;
    color: var(--primary);
}

.file-tooltip-title {
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-tooltip-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px var(--space-sm);
}

.file-tooltip-label {
    color: var(--text-muted);
}

.file-tooltip-value {
    color: var(--text-main);
    font-family: monospace;
    text-align: right;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .container {
        padding: var(--space-md);
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .controls--single-row {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }

    .control-group {
        justify-content: space-between;
    }

    .controls-spacer {
        display: none;
    }

    .file-table {
        font-size: var(--font-size-sm);
    }

    .file-table th,
    .file-table td {
        padding: var(--space-sm);
    }

    .tool-grid {
        grid-template-columns: 1fr;
    }

    .modal {
        margin: var(--space-sm);
        max-height: 95vh;
    }
}

/* ============================================
   Video Tool Specific Styles
   ============================================ */

/* --- Storage Badge --- */
.storage-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 10px;
    border-radius: var(--radius);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.storage-badge.fsa-mode {
    background-color: var(--success-light);
    color: #276749;
}

.storage-badge.memory-mode {
    background-color: #fef3c7;
    color: #92400e;
}

.storage-icon {
    font-size: 14px;
}

/* --- FFmpeg Loading Status --- */
.ffmpeg-status {
    text-align: center;
    padding: var(--space-xl);
}

.ffmpeg-status-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.ffmpeg-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.ffmpeg-status.success .ffmpeg-spinner {
    display: none;
}

.ffmpeg-status.success {
    color: var(--success);
}

.ffmpeg-status.error {
    color: var(--danger);
}

.ffmpeg-status.error .ffmpeg-spinner {
    display: none;
}

/* --- Warning Banner --- */
.warning-banner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background-color: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: var(--radius);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
    color: #92400e;
}

.warning-banner[hidden] {
    display: none;
}

.warning-icon {
    font-size: 16px;
}

/* --- Modal Tabs --- */
.modal-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.modal-tab {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}

.modal-tab:hover {
    color: var(--text-main);
}

.modal-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* --- Tab Content --- */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* --- Slider Labels --- */
.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

/* --- Input Hint --- */
.input-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

/* --- Trim Duration --- */
.trim-duration {
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background: #f8fafc;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

#trim-duration-value {
    font-weight: 600;
    color: var(--text-main);
}

/* --- Video Thumbnail Placeholder --- */
.file-thumbnail--video {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius);
    font-size: 10px;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

/* --- Drag Overlay Icon --- */
.drag-overlay-icon {
    font-size: 32px;
    font-weight: 700;
    color: white;
    letter-spacing: 2px;
}

/* --- Warning Icon --- */
.warning-icon {
    font-weight: 700;
    font-size: 18px;
}

/* --- Saved Badge (FSA Mode) --- */
.saved-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    background-color: var(--success-light);
    color: #276749;
    border-radius: var(--radius);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* ============================================
   QR Code Tool - Split Layout System
   ============================================ */

/* --- Split Container (App Layout) --- */
.split-container {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 0;
    min-height: calc(100vh - 49px); /* 49px = top-bar height */
}

.split-sidebar {
    background: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 49px);
    overflow: hidden;
}

.split-sidebar > .settings-tabs,
.split-sidebar > .settings-panel {
    flex-shrink: 0;
}

.split-sidebar > .settings-panel {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.split-sidebar > .settings-tabs {
    padding: 0;
}

.sidebar-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    background: var(--panel-bg);
    flex-shrink: 0;
}

.sidebar-footer .form-group {
    margin-bottom: var(--space-sm);
}

.sidebar-footer .form-group:last-child {
    margin-bottom: 0;
}

.split-preview {
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    min-height: calc(100vh - 49px);
    gap: var(--space-md);
}

/* Scrollbar styling for sidebar */
.split-sidebar::-webkit-scrollbar {
    width: 6px;
}

.split-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.split-sidebar::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 3px;
}

.split-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- QR Preview Area --- */
.qr-preview-canvas {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    min-height: 200px;
    max-width: 500px;
    max-height: 500px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-sm);
    margin-bottom: var(--space-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.qr-preview-canvas canvas,
.qr-preview-canvas svg {
    display: block;
}

.qr-preview-placeholder {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    text-align: center;
}

/* --- Export Controls (below QR) --- */
.export-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    width: 100%;
    max-width: 320px;
}

/* --- Split Button (Green/Success) --- */
.split-btn {
    display: flex;
    width: 100%;
}

.split-btn-main {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 12px 20px;
    background-color: var(--success);
    color: #ffffff;
    border: 1px solid var(--success);
    border-radius: var(--radius) 0 0 var(--radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s;
}

.split-btn-main:hover {
    background-color: #2f855a;
    border-color: #2f855a;
}

.split-btn-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 14px;
    background-color: var(--success);
    color: #ffffff;
    border: 1px solid var(--success);
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: background-color 0.15s;
}

.split-btn-toggle:hover {
    background-color: #2f855a;
    border-color: #2f855a;
    border-left-color: rgba(255, 255, 255, 0.3);
}

.split-btn-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
    display: none;
}

.split-btn-dropdown.open {
    display: block;
}

.split-btn-option {
    display: block;
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: none;
    text-align: left;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.1s;
}

.split-btn-option:hover {
    background-color: var(--primary-light);
}

.split-btn-option.active {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 500;
}

.split-btn-option:first-child {
    border-radius: var(--radius) var(--radius) 0 0;
}

.split-btn-option:last-child {
    border-radius: 0 0 var(--radius) var(--radius);
}

.split-btn-wrapper {
    position: relative;
    width: 100%;
}

/* --- File Name Input (inline style) --- */
.export-filename {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.export-filename input {
    width: 140px;
    padding: 6px 10px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--panel-bg);
}

.export-filename input:focus {
    border-color: var(--primary);
    outline: none;
}

/* --- Color Picker Styles --- */
.color-picker-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.color-picker-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex: 1;
}

.color-picker-input {
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    cursor: pointer;
    background: transparent;
}

.color-picker-input::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-picker-input::-webkit-color-swatch {
    border: none;
    border-radius: 2px;
}

.color-picker-input::-moz-color-swatch {
    border: none;
    border-radius: 2px;
}

.color-hex-input {
    flex: 1;
    font-family: monospace;
    text-transform: uppercase;
}

/* --- Gradient Controls --- */
.gradient-controls {
    margin-top: var(--space-sm);
    padding: var(--space-md);
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.gradient-controls.hidden {
    display: none;
}

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

.gradient-row:last-child {
    margin-bottom: 0;
}

.gradient-preview {
    height: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin-top: var(--space-sm);
}

/* --- Settings Tabs --- */
.settings-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.settings-tab {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}

.settings-tab:hover {
    color: var(--text-main);
}

.settings-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.settings-panel {
    display: none;
}

.settings-panel.active {
    display: block;
}

/* --- Dynamic Inputs (for WiFi, vCard, etc.) --- */
.dynamic-inputs {
    margin-top: var(--space-md);
}

.dynamic-inputs.hidden {
    display: none;
}

.input-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

/* --- Logo Upload --- */
.logo-upload-area {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius);
    padding: var(--space-md);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s;
}

.logo-upload-area:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.logo-upload-area input[type="file"] {
    display: none;
}

.logo-upload-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.logo-preview {
    display: none;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.logo-preview.visible {
    display: flex;
}

.logo-preview-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: #fafbfc;
}

.logo-preview-info {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* --- Slider with Value Display --- */
.slider-with-value {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.slider-with-value input[type="range"] {
    flex: 1;
}

.slider-with-value .slider-value {
    min-width: 40px;
    text-align: right;
    font-family: monospace;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* --- QR Tool Responsive --- */
@media (max-width: 900px) {
    .split-container {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .split-sidebar {
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        order: 2;
    }

    .split-preview {
        min-height: 400px;
        order: 1;
        padding: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .input-group-row {
        grid-template-columns: 1fr;
    }

    .gradient-row {
        grid-template-columns: 1fr;
    }

    .settings-tab {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-xs);
    }

    .export-controls {
        max-width: 100%;
    }
}

/* ============================================
   CODE TO PDF TOOL STYLES
   ============================================ */

/* Code Input Textarea */
.code-textarea {
    font-family: 'Fira Code', 'JetBrains Mono', 'Source Code Pro', Consolas, monospace;
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
    min-height: 200px;
    tab-size: 4;
    white-space: pre;
}

/* PDF Preview Area */
.pdf-preview-area {
    background: #525659;
    display: flex;
    flex-direction: column;
    padding: 0;
    align-items: stretch;
    justify-content: stretch;
}

.pdf-preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 0;
    background: #525659;
}

.pdf-preview-frame {
    width: 100%;
    height: 100%;
    border: none;
    background: #525659;
}

.pdf-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #4a5568;
    color: #fff;
    font-size: var(--font-size-sm);
    gap: var(--space-sm);
    z-index: 10;
}

.pdf-loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Legacy preview styles (keep for compatibility) */
.code-preview-area {
    background: #cbd5e0;
    overflow: auto;
    align-items: flex-start;
    justify-content: center;
}

.code-preview-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    overflow: auto;
    max-height: calc(100vh - 180px);
    position: relative;
}

/* Responsive */
@media (max-width: 900px) {
    .pdf-preview-container {
        min-height: 400px;
    }
}

/* ===========================================
   TIME TOOLS STYLES
   =========================================== */

/* Time Tool Tabs */
.time-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--border-color);
    padding: 0 var(--space-sm);
}

.time-tab {
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: -2px;
}

.time-tab:hover {
    color: var(--text-main);
    background-color: var(--bg-color);
}

.time-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Time Panels */
.time-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.time-panel.active {
    display: block;
}

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

/* Time Display Card */
.time-display-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-xl);
    max-width: 600px;
    margin: 0 auto;
}

.time-display {
    font-size: 64px;
    font-weight: 700;
    text-align: center;
    font-variant-numeric: tabular-nums;
    color: var(--text-main);
    margin-bottom: var(--space-xl);
    letter-spacing: 2px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

.timer-alarm-blink {
    animation: alarmBlink 1s ease-in-out infinite;
}

@keyframes alarmBlink {
    0%, 49% {
        color: var(--danger);
        opacity: 1;
    }
    50%, 100% {
        color: var(--danger);
        opacity: 0.3;
    }
}

/* Time Controls */
.time-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.time-input-group {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.time-input-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.time-input-field label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 600;
    text-align: center;
}

.time-input-field input {
    width: 80px;
    padding: var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: var(--font-size-lg);
    text-align: center;
    font-weight: 600;
}

.time-button-group {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Timer Presets */
.timer-presets {
    margin-top: var(--space-md);
}

.preset-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    text-align: center;
}

.preset-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-preset {
    min-width: 60px;
}

/* Lap Times */
.lap-times {
    margin-top: var(--space-lg);
}

.lap-times h3 {
    font-size: var(--font-size-md);
    color: var(--text-main);
    margin-bottom: var(--space-md);
    text-align: center;
}

.lap-times-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 300px;
    overflow-y: auto;
}

.lap-time-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-color);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.lap-number {
    font-weight: 600;
    color: var(--text-main);
    font-size: var(--font-size-sm);
}

.lap-time {
    font-weight: 700;
    color: var(--text-main);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: var(--font-size-base);
}

.split-time {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

/* World Clock */
.worldclock-container {
    max-width: 800px;
    margin: 0 auto;
}

.worldclock-search {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.timezone-search-wrapper {
    flex: 1;
    position: relative;
}

.worldclock-search input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: var(--font-size-base);
}

.timezone-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.timezone-dropdown.show {
    display: block;
}

.timezone-dropdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.15s ease;
}

.timezone-dropdown-item:last-child {
    border-bottom: none;
}

.timezone-dropdown-item:hover,
.timezone-dropdown-item.selected {
    background-color: var(--primary-light);
}

.tz-name {
    font-weight: 500;
    color: var(--text-main);
    font-size: var(--font-size-base);
}

.tz-offset {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

.worldclock-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-md);
}

.worldclock-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    transition: box-shadow 0.2s ease, transform 0.1s ease;
    cursor: pointer;
}

.worldclock-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.worldclock-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.worldclock-name {
    font-weight: 600;
    font-size: var(--font-size-md);
    color: var(--text-main);
}

.worldclock-time {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-xs);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

.worldclock-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.worldclock-offset {
    font-size: var(--font-size-xs);
    color: var(--text-light);
}

/* Big Clock View */
.big-clock-view {
    animation: fadeIn 0.3s ease;
}

.big-clock-controls {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.big-clock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-xl);
}

/* Fullscreen mode */
.big-clock-view.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    background: var(--panel-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.big-clock-view.fullscreen .big-clock-controls {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    margin: 0;
}

.big-clock-view.fullscreen .back-btn {
    display: none;
}

.big-clock-view.fullscreen .big-clock-container {
    border: none;
    background: transparent;
    width: 100%;
    height: 100%;
    max-width: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 0;
}

.big-clock-view.fullscreen .big-clock-city {
    font-size: 48px;
}

.big-clock-view.fullscreen .big-clock-time {
    font-size: 180px;
}

.big-clock-view.fullscreen .big-clock-date {
    font-size: 32px;
}

.big-clock-view.fullscreen .big-clock-offset {
    font-size: var(--font-size-lg);
}

.big-clock-city {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.big-clock-time {
    font-size: 120px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-lg);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    letter-spacing: 4px;
    text-align: center;
    line-height: 1;
}

.big-clock-date {
    font-size: 24px;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    text-align: center;
}

.big-clock-offset {
    font-size: var(--font-size-md);
    color: var(--text-light);
    text-align: center;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

/* Responsive Time Tools */
@media (max-width: 768px) {
    .time-display {
        font-size: 48px;
    }
    
    .time-display-card {
        padding: var(--space-lg);
    }
    
    .time-input-field input {
        width: 70px;
        font-size: var(--font-size-base);
    }
    
    .worldclock-list {
        grid-template-columns: 1fr;
    }
    
    .time-tabs {
        overflow-x: auto;
    }
    
    .time-tab {
        white-space: nowrap;
        padding: var(--space-sm) var(--space-md);
    }
    
    .big-clock-city {
        font-size: 24px;
    }
    
    .big-clock-time {
        font-size: 72px;
        letter-spacing: 2px;
    }
    
    .big-clock-date {
        font-size: 18px;
    }
    
    .big-clock-container {
        padding: var(--space-lg);
        min-height: 300px;
    }
}

/* ============================================
   Unit Converter Tool
   ============================================ */

.converter-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.converter-swap {
    display: flex;
    justify-content: center;
    margin: var(--space-md) 0;
}

.swap-btn {
    font-size: var(--font-size-lg);
    padding: 8px 16px;
}

.converter-formula {
    padding: var(--space-md);
    background: var(--bg-color);
    border-radius: var(--radius);
    margin-top: var(--space-md);
}

.formula-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.digital-info {
    padding: var(--space-sm);
    background: var(--primary-light);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
}

.digital-info p {
    margin: 0 0 var(--space-xs) 0;
}

.digital-info p:last-child {
    margin-bottom: 0;
}

/* Converter Display (Right Panel) */
.converter-display {
    width: 100%;
    max-width: 600px;
}

.converter-result-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-xl);
    text-align: center;
    margin-bottom: var(--space-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.result-from,
.result-to {
    padding: var(--space-md);
}

.result-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-main);
    display: block;
    font-variant-numeric: tabular-nums;
}

.result-unit {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    display: block;
    margin-top: var(--space-xs);
}

.result-equals {
    font-size: 36px;
    color: var(--text-light);
    padding: var(--space-sm) 0;
}

.all-units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-md);
}

.unit-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    text-align: center;
}

.unit-value {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
    word-break: break-all;
}

.unit-name {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ============================================
   Time Calculator Tool
   ============================================ */

.field-hint {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.form-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    font-weight: 400;
    margin-bottom: 0;
}

.radio-label input[type="radio"] {
    margin: 0;
}

.duration-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

/* Time Calculator Display */
.time-calc-display {
    width: 100%;
    max-width: 600px;
}

.time-result-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.result-title {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.result-main {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.result-number {
    font-size: 72px;
    font-weight: 700;
    color: var(--text-main);
    display: block;
    font-variant-numeric: tabular-nums;
}

.result-label {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    display: block;
}

.result-date {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-main);
}

.result-breakdown {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-color);
    border-radius: var(--radius);
}

.breakdown-item {
    text-align: center;
}

.breakdown-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.breakdown-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.result-conversions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.result-conversions p {
    margin: 0;
    padding: var(--space-sm);
    background: var(--bg-color);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
}

.result-dates {
    padding: var(--space-md);
    background: var(--bg-color);
    border-radius: var(--radius);
}

.result-dates p {
    margin: 0 0 var(--space-xs) 0;
    font-size: var(--font-size-sm);
}

.result-dates p:last-child {
    margin-bottom: 0;
}

/* World Clock Converter Display */
.worldclock-result {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.wc-from,
.wc-to {
    text-align: center;
    flex: 1;
}

.wc-city {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.wc-time {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
}

.wc-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.wc-arrow {
    font-size: 32px;
    color: var(--text-light);
}

.wc-offset-info {
    padding: var(--space-md);
    background: var(--bg-color);
    border-radius: var(--radius);
}

.wc-offset-info p {
    margin: 0 0 var(--space-xs) 0;
    font-size: var(--font-size-sm);
}

.wc-offset-info p:last-child {
    margin-bottom: 0;
}

.note {
    color: var(--warning);
    margin-top: var(--space-sm);
}

.error {
    color: var(--danger);
}

/* Responsive Time Calculator */
@media (max-width: 768px) {
    .duration-inputs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .result-number {
        font-size: 48px;
    }
    
    .breakdown-value {
        font-size: 24px;
    }
    
    .result-breakdown {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .worldclock-result {
        flex-direction: column;
    }
    
    .wc-arrow {
        transform: rotate(90deg);
    }
    
    .wc-time {
        font-size: 36px;
    }
}