/* Base styles */
:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0284c7;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-code-preview: #c7c18a;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --rounded-sm: 0.125rem;
    --rounded: 0.25rem;
    --rounded-md: 0.375rem;
    --rounded-lg: 0.5rem;
    --rounded-full: 9999px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
}

/* Layout */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.app-header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.app-content {
    background-color: white;
    border-radius: var(--rounded-lg);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

/* Section headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-gray-200);
    padding-bottom: 0.75rem;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

/* Color palette */
.color-palette-container,
.font-sizes-container {
    margin-bottom: 2rem;
}

.color-palette-container h3,
.font-sizes-container h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-800);
}

.color-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.color-item {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded);
    overflow: hidden;
    transition:
        transform 0.2s,
        box-shadow 0.2s;
}

.color-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.color-preview {
    height: 80px;
    cursor: pointer;
}

.color-info {
    padding: 0.75rem;
    background-color: var(--color-gray-50);
}

.color-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.color-value {
    font-family: monospace;
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

.color-slug {
    font-family: monospace;
    color: var(--color-gray-500);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.color-actions {
    display: flex;
    justify-content: flex-end;
    padding: 0.5rem;
    border-top: 1px solid var(--color-gray-200);
}

.color-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-gray-500);
    padding: 0.25rem;
    border-radius: var(--rounded);
}

.color-action-btn:hover {
    color: var(--color-danger);
    background-color: var(--color-gray-100);
}

/* Buttons */
.add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--rounded);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

/* Typography settings */
.font-sizes-container {
    margin-top: 1.5rem;
}

.font-size-list {
    display: grid;
    gap: 1rem;
}

.font-size-item {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded);
    padding: 0.75rem;
    background-color: white;
}

.font-size-preview {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.heading-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.heading-preview {
    font-weight: 600;
}

.font-size-input {
    flex: 1;
}

.font-size-input input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-family: monospace;
}

/* JSON Preview */
.code-preview {
    background-color: var(--color-gray-900);
    color: var(--color-code-preview);
    padding: 1rem;
    border-radius: var(--rounded);
    overflow: auto;
    max-height: 400px;
}

.code-preview pre {
    font-family: monospace;
    white-space: pre-wrap;
    word-break: break-all;
}

.file-actions {
    display: flex;
    gap: 0.75rem;
}

.save-btn,
.download-btn,
.upload-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--rounded);
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.save-btn,
.download-json-btn {
    background-color: var(--color-success);
    color: white;
}

.upload-btn {
    background-color: var(--color-secondary);
    color: white;
}

.save-btn:hover,
.download-btn:hover,
.upload-btn:hover {
    opacity: 0.9;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease;
}

.modal-content {
    background-color: white;
    border-radius: var(--rounded-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    overflow: hidden;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
    transform: scale(0.95);
    opacity: 1;
}

.modal.active .modal-content {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    padding: 1rem;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-500);
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem;
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Color picker */
.color-picker-container {
    display: grid;
    gap: 1rem;
}

.color-picker-area {
    display: grid;
    gap: 0.75rem;
}

.color-picker {
    width: 100%;
    height: 200px;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded);
    background-color: #ff0000;
    position: relative;
    cursor: crosshair;
    box-shadow: var(--shadow);
    touch-action: none;
    user-select: none;
    overflow: hidden;
}

/* White gradient: left (white) to right (pure hue) = saturation */
.color-picker:after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, #ffffff 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
}

/* Black gradient: bottom (black) to top (transparent) = value/brightness */
.color-picker:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, #000000 100%);
    z-index: 1;
    pointer-events: none;
}

.color-picker-cursor {
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.3),
        0 0 3px rgba(0, 0, 0, 0.3);
}

/* Hue slider */
.hue-slider-container {
    width: 100%;
}

.hue-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 16px;
    border-radius: 8px;
    background: linear-gradient(to right, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    outline: none;
    cursor: pointer;
}

.hue-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-gray-400);
    cursor: pointer;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
}

.hue-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-gray-400);
    cursor: pointer;
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
}

.color-input-container,
.color-name-container,
.block-input-container {
    display: grid;
    gap: 0.5rem;
}

.color-input-container input,
.color-name-container input {
    padding: 0.625rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-size: 0.875rem;
    width: 100%;
    transition: border-color 0.2s ease;
}

.color-input-container input:focus,
.color-name-container input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.1);
}

.block-input-container input {
    padding: 0.625rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-size: 0.875rem;
}

/* Color format toggle */
.color-format-container {
    display: grid;
    gap: 0.5rem;
}

.color-format-container label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.color-format-toggle {
    display: flex;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    overflow: hidden;
}

.format-btn {
    flex: 1;
    padding: 0.5rem 1rem;
    border: none;
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition:
        background-color 0.2s,
        color 0.2s;
    text-align: center;
}

.format-btn:first-child {
    border-right: 1px solid var(--color-gray-300);
}

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

.format-btn:hover:not(.active) {
    background-color: var(--color-gray-200);
}

/* RGBA inputs */
.rgba-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 0.5rem;
}

.rgba-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.rgba-field label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-align: center;
}

.rgba-field input {
    padding: 0.5rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-size: 0.8125rem;
    text-align: center;
    width: 100%;
    font-family: monospace;
}

.rgba-field input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.1);
}

.rgba-preview-text {
    margin-top: 0.5rem;
    padding: 0.375rem 0.625rem;
    background-color: var(--color-gray-100);
    border-radius: var(--rounded);
    font-family: monospace;
    font-size: 0.8125rem;
    color: var(--color-gray-700);
    text-align: center;
}

/* Opacity slider */
.opacity-container {
    display: grid;
    gap: 0.5rem;
}

.opacity-container label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.opacity-slider-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.opacity-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%);
    outline: none;
    cursor: pointer;
    position: relative;
}

.opacity-slider::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 4px;
    background-image: linear-gradient(45deg, #ccc 25%, transparent 25%), linear-gradient(-45deg, #ccc 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #ccc 75%), linear-gradient(-45deg, transparent 75%, #ccc 75%);
    background-size: 8px 8px;
    background-position:
        0 0,
        0 4px,
        4px -4px,
        -4px 0px;
    z-index: -1;
}

.opacity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-gray-400);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.opacity-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--color-gray-400);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.opacity-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    min-width: 3rem;
    text-align: right;
    font-family: monospace;
}

/* Color preview swatch */
.color-preview-swatch {
    width: 100%;
    height: 48px;
    border-radius: var(--rounded);
    border: 1px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(45deg, #e0e0e0 25%, transparent 25%), linear-gradient(-45deg, #e0e0e0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e0e0e0 75%), linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
    background-size: 12px 12px;
    background-position:
        0 0,
        0 6px,
        6px -6px,
        -6px 0px;
}

.color-preview-swatch .swatch-color {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.cancel-btn {
    padding: 0.5rem 1rem;
    background-color: var(--color-gray-200);
    color: var(--color-gray-800);
    border: none;
    border-radius: var(--rounded);
    font-weight: 500;
    cursor: pointer;
}

.save-color-btn,
.add-block-btn {
    padding: 0.5rem 1rem;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--rounded);
    font-weight: 500;
    cursor: pointer;
}

/* Block-specific color palettes */
.block-palettes-container {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.block-palette-card {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded-lg);
    padding: 1rem;
    background-color: var(--color-gray-50);
    transition: box-shadow 0.2s;
}

.block-palette-card:hover {
    box-shadow: var(--shadow-md);
}

.block-palette-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-gray-200);
}

.block-palette-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    font-family: monospace;
}

.block-remove-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-gray-400);
    padding: 0.25rem;
    border-radius: var(--rounded);
    transition:
        color 0.2s,
        background-color 0.2s;
}

.block-remove-btn:hover {
    color: var(--color-danger);
    background-color: var(--color-gray-100);
}

.block-color-list {
    margin-bottom: 1rem;
}

.block-empty-msg {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    font-style: italic;
    padding: 0.5rem 0;
}

.block-add-color-btn {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
}

/* Block color rows (Text / Background) */
.block-color-rows {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.block-color-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded);
    background-color: white;
    cursor: pointer;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

.block-color-row:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.1);
}

.block-color-swatch {
    width: 36px;
    height: 36px;
    border-radius: var(--rounded);
    border: 1px solid var(--color-gray-200);
    flex-shrink: 0;
}

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

.block-color-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.125rem;
}

.block-color-value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-800);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Block property remove button */
.block-prop-remove-btn {
    background: none;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--rounded);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition:
        color 0.15s,
        background-color 0.15s;
}

.block-prop-remove-btn:hover {
    color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.1);
}

/* Add property dropdown */
.block-add-property {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--color-gray-200);
}

.block-property-select {
    flex: 1;
    padding: 0.375rem 0.5rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-size: 0.8125rem;
    color: var(--color-gray-600);
    background-color: white;
    cursor: pointer;
}

.block-property-select:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.1);
}

.block-add-prop-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    flex-shrink: 0;
}

/* Global color popup for block selection */
.global-color-popup {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 100%;
    margin-bottom: 0.5rem;
    background-color: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--rounded-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem;
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
}

.global-color-popup-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-500);
    margin-bottom: 0.5rem;
    padding-bottom: 0.375rem;
    border-bottom: 1px solid var(--color-gray-100);
}

.global-color-swatch-grid {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.global-color-swatch {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem;
    border-radius: var(--rounded);
    cursor: pointer;
    transition: background-color 0.15s;
}

.global-color-swatch:hover {
    background-color: var(--color-gray-100);
}

.swatch-dot {
    width: 28px;
    height: 28px;
    border-radius: var(--rounded);
    border: 1px solid var(--color-gray-200);
    flex-shrink: 0;
}

.swatch-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.swatch-dot-none {
    background: repeating-linear-gradient(45deg, #e0e0e0, #e0e0e0 5px, #f5f5f5 5px, #f5f5f5 10px);
    position: relative;
}

.swatch-dot-none::after {
    content: "✕";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #999;
    font-size: 14px;
}

.swatch-label-none {
    color: var(--color-gray-400) !important;
}

/* Add block inline form */
.add-block-container {
    margin-bottom: 1rem;
}

.add-block-inline {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.add-block-inline input {
    flex: 1;
    padding: 0.625rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--rounded);
    font-size: 0.875rem;
    font-family: monospace;
    transition: border-color 0.2s ease;
}

.add-block-inline input:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.1);
}

.add-block-inline .add-btn {
    white-space: nowrap;
    flex-shrink: 0;
}

/* Separator */
.separator {
    margin: 2rem 0;
    border-top: 1px solid var(--color-gray-200);
}