/* ============================================
   JSON Viewer - SURITD TOOLS Design System
   Styling aligned with epub-file-viewer
   Blue theme - light mode default, dark via [data-theme="dark"]
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
    --json-transition: 0.25s;

    /* Primary - blue (file viewers) */
    --json-primary: #3399cc;
    --json-primary-light: #e0f0f8;
    --json-primary-dark: #2a7fa8;
    --json-accent: #e64e4e;
    --json-success: #339966;
    --json-success-light: #d1fae5;
    --json-warning: #d97706;
    --json-danger: #b91c1c;
    --json-danger-light: #fee2e2;
    --json-purple: #6d28d9;
    --json-purple-light: #ede9fe;

    /* Surfaces */
    --json-bg: #f7fafc;
    --json-bg-elevated: #ffffff;
    --json-bg-subtle: #f0f7fb;
    --json-bg-tertiary: #e1eff7;
    --json-text: #1f2937;
    --json-text-secondary: #374151;
    --json-text-muted: #6b7280;
    --json-border: #e5e7eb;
    --json-border-strong: #d1d5db;

    --json-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --json-shadow-md: 0 2px 6px rgba(0, 0, 0, 0.06);
    --json-shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.08);

    --json-radius-sm: 6px;
    --json-radius-md: 9px;
    --json-radius-lg: 12px;
    --json-radius-xl: 14px;
    --json-radius-full: 9999px;

    /* JSON syntax colors */
    --json-key: #6d28d9;
    --json-string: #0f766e;
    --json-number: #2563eb;
    --json-boolean: #b45309;
    --json-null: #6b7280;
    --json-bracket: #374151;

    /* Code view */
    --json-code-bg: #1e293b;
    --json-code-gutter: #0f172a;
    --json-code-gutter-text: #64748b;
    --json-code-gutter-border: #334155;
    --json-code-text: #e2e8f0;
}

/* Dark Mode */
[data-theme="dark"] {
    --json-primary: #5db8e8;
    --json-primary-light: rgba(93, 184, 232, 0.15);
    --json-primary-dark: #3399cc;
    --json-accent: #f87171;
    --json-success: #4ade80;
    --json-success-light: rgba(74, 222, 128, 0.15);
    --json-warning: #fbbf24;
    --json-danger: #f87171;
    --json-danger-light: rgba(248, 113, 113, 0.15);
    --json-purple: #a78bfa;
    --json-purple-light: rgba(167, 139, 250, 0.15);

    --json-bg: #0f1419;
    --json-bg-elevated: #1a2129;
    --json-bg-subtle: #232b35;
    --json-bg-tertiary: #2d3744;
    --json-text: #e5e7eb;
    --json-text-secondary: #cbd5e1;
    --json-text-muted: #94a3b8;
    --json-border: #2d3744;
    --json-border-strong: #3d4a5c;

    --json-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --json-shadow-md: 0 2px 6px rgba(0, 0, 0, 0.4);
    --json-shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.5);

    /* JSON syntax colors - dark */
    --json-key: #c4b5fd;
    --json-string: #6ee7b7;
    --json-number: #93c5fd;
    --json-boolean: #fdba74;
    --json-null: #9ca3af;
    --json-bracket: #94a3b8;

    /* Code view - dark */
    --json-code-bg: #0f172a;
    --json-code-gutter: #020617;
    --json-code-gutter-text: #475569;
    --json-code-gutter-border: #1e293b;
    --json-code-text: #e2e8f0;
}

/* Base */
* { box-sizing: border-box; }

body {
    color: var(--json-text);
    line-height: 1.6;
}

/* Container */
.tool-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 15px 40px;
}

/* Header */
.tool-header {
    text-align: center;
    margin-bottom: 24px;
}

.tool-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 12px;
}

.tool-icon-inline {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    color: var(--json-primary);
}

.tool-title {
    font-size: 1.9rem;
    font-weight: 700;
    margin: 0;
    color: var(--json-primary);
    line-height: 1.2;
}

.tool-description {
    font-size: 1.05rem;
    color: var(--json-text-secondary);
    max-width: 800px !important;
    margin: 0 auto;
    line-height: 1.7;
    text-align: center;
}

.tool-description a {
    color: var(--json-primary);
    font-weight: 600;
    text-decoration: none;
}

.tool-description a:hover {
    text-decoration: underline;
}

/* Main Tool Area */
.tool-main {
    background: var(--json-bg-elevated);
    border-radius: var(--json-radius-lg);
    box-shadow: var(--json-shadow-sm);
    overflow: visible !important;
    border: 1px solid var(--json-border);
}

.tool-main > section:first-child,
.file-info-bar {
    border-top-left-radius: var(--json-radius-lg);
    border-top-right-radius: var(--json-radius-lg);
}

.tool-main > section:last-child {
    border-bottom-left-radius: var(--json-radius-lg);
    border-bottom-right-radius: var(--json-radius-lg);
}

/* Upload Section */
.jfv-upload-section {
    padding: 24px;
}

.jfv-upload-area {
    border: 2px dashed var(--json-border-strong);
    border-radius: var(--json-radius-xl);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--json-transition), background var(--json-transition);
    background: var(--json-bg-subtle);
    position: relative;
    overflow: hidden;
    outline: none;
}

.jfv-upload-area::before,
.jfv-upload-area::after {
    display: none !important;
    content: none !important;
}

.jfv-upload-area:hover,
.jfv-upload-area:focus-visible,
.jfv-upload-area.dragover,
.jfv-upload-area.active {
    border-color: var(--json-primary);
    background: var(--json-primary-light);
}

.jfv-upload-content {
    position: relative;
    z-index: 1;
}

.jfv-upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 16px;
    background: var(--json-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.jfv-upload-icon svg {
    width: 32px;
    height: 32px;
    color: #ffffff;
    stroke: #ffffff;
}

.jfv-upload-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--json-text);
    margin: 0 0 6px;
}

.jfv-upload-subtitle {
    color: var(--json-text-muted);
    margin: 0 0 16px;
    font-size: 0.95rem;
}

.jfv-upload-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--json-success);
    font-weight: 500;
    font-size: 0.85rem;
}

.jfv-file-types {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.jfv-file-type-badge {
    background: var(--json-bg-elevated);
    border: 1px solid var(--json-border);
    color: var(--json-text-secondary);
    padding: 4px 12px;
    border-radius: var(--json-radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

/* Paste Section */
.jfv-paste-section {
    margin-top: 20px;
}

.jfv-paste-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.jfv-paste-divider::before,
.jfv-paste-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--json-border);
}

.jfv-paste-divider span {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--json-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.json-textarea {
    width: 100%;
    min-height: 160px;
    padding: 16px;
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    font-family: 'SF Mono', Consolas, Monaco, 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    background: var(--json-bg);
    color: var(--json-text);
    transition: border-color var(--json-transition);
}

.json-textarea:focus {
    outline: none;
    border-color: var(--json-primary);
}

.json-textarea::placeholder {
    color: var(--json-text-muted);
}

.jfv-paste-actions {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    flex-wrap: wrap;
}

/* Error Message */
.jfv-error-message {
    display: none;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 18px;
    background: var(--json-danger-light);
    border: 1px solid var(--json-danger);
    border-radius: var(--json-radius-md);
    color: var(--json-danger);
    margin-top: 18px;
}

.jfv-error-message.visible {
    display: flex;
}

.jfv-error-message svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.jfv-error-message .error-content {
    flex: 1;
    font-size: 0.9rem;
}

.jfv-error-message .error-main {
    font-weight: 600;
    margin-bottom: 4px;
}

.jfv-error-actions {
    display: none;
    gap: 8px;
    flex-wrap: wrap;
    margin: 8px 0;
}

.jfv-error-message .jfv-error-help {
    font-size: 0.82rem;
    opacity: 0.85;
}

.jfv-error-message .jfv-error-help a {
    color: var(--json-danger);
    text-decoration: underline;
    font-weight: 600;
}

.error-close {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--json-danger);
    opacity: 0.7;
    transition: opacity var(--json-transition);
    flex-shrink: 0;
}

.error-close:hover {
    opacity: 1;
}

/* Editor Section */
.editor-section {
    padding: 0;
}

/* File Info Bar */
.file-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    padding: 12px 20px;
    background: var(--json-bg-subtle);
    border-bottom: 1px solid var(--json-border);
}

.file-info-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.85rem;
    color: var(--json-text-muted);
}

.file-info-item svg {
    color: var(--json-primary);
    stroke: var(--json-primary);
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.validation-status {
    color: var(--json-success);
    font-weight: 600;
}

.validation-status svg {
    color: var(--json-success);
    stroke: var(--json-success);
}

.validation-status.invalid {
    color: var(--json-danger);
}

.validation-status.invalid svg {
    color: var(--json-danger);
    stroke: var(--json-danger);
}

/* Toolbar */
.viewer-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--json-bg-elevated);
    border-bottom: 1px solid var(--json-border);
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toolbar-center {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 200px;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* View Toggle */
.view-toggle {
    display: flex;
    gap: 4px;
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    padding: 4px;
    background: var(--json-bg);
}

.view-toggle button {
    padding: 8px 15px;
    border: none;
    border-radius: var(--json-radius-sm);
    background: transparent;
    color: var(--json-text-muted);
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--json-transition), color var(--json-transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.view-toggle button:hover {
    background: var(--json-bg-tertiary);
    color: var(--json-text);
}

.view-toggle button.active {
    background: var(--json-primary);
    color: #ffffff;
}

.view-toggle button svg {
    width: 16px;
    height: 16px;
}

/* Search Box */
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--json-bg);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    max-width: 350px;
    width: 100%;
    transition: border-color var(--json-transition);
}

.search-box:focus-within {
    border-color: var(--json-primary);
}

.search-box svg {
    color: var(--json-text-muted);
    stroke: var(--json-text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.88rem;
    color: var(--json-text);
    outline: none;
    min-width: 0;
}

.search-box input::placeholder {
    color: var(--json-text-muted);
}

.search-count {
    font-size: 0.75rem;
    color: var(--json-text-muted);
    white-space: nowrap;
}

.search-nav {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.search-nav button {
    background: none;
    border: none;
    padding: 2px;
    cursor: pointer;
    color: var(--json-text-muted);
    display: flex;
    align-items: center;
    border-radius: 4px;
    transition: background var(--json-transition), color var(--json-transition);
}

.search-nav button:hover {
    color: var(--json-primary);
    background: var(--json-primary-light);
}

/* Toolbar Buttons */
.toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--json-border);
    background: var(--json-bg-elevated);
    border-radius: var(--json-radius-md);
    cursor: pointer;
    transition: background var(--json-transition), border-color var(--json-transition), color var(--json-transition);
    color: var(--json-text-muted);
}

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

.toolbar-btn.active {
    background: var(--json-primary);
    border-color: var(--json-primary);
    color: #ffffff;
}

.toolbar-btn svg {
    width: 18px;
    height: 18px;
}

/* Options Bar */
.options-bar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 10px 20px;
    background: var(--json-bg);
    border-bottom: 1px solid var(--json-border);
    flex-wrap: wrap;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-group label {
    font-size: 0.85rem;
    color: var(--json-text-secondary);
    font-weight: 500;
}

.styled-select {
    padding: 7px 30px 7px 12px;
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-sm);
    background-color: var(--json-bg-elevated);
    font-size: 0.85rem;
    color: var(--json-text);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    transition: border-color var(--json-transition);
}

.styled-select:hover {
    border-color: var(--json-primary);
}

.styled-select:focus {
    outline: none;
    border-color: var(--json-primary);
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 16px !important;
    height: 16px !important;
    accent-color: var(--json-primary);
    border: 1px solid var(--json-border) !important;
    background: var(--json-bg-elevated) !important;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"]:checked {
    background: var(--json-primary) !important;
    border-color: var(--json-primary) !important;
}

.checkbox-group label {
    cursor: pointer;
    user-select: none;
}

/* Content Area */
.viewer-content {
    min-height: 450px;
    max-height: 65vh;
    overflow: hidden;
    border-bottom: 1px solid var(--json-border);
    position: relative;
}

/* Breadcrumb Path Bar */
.path-bar {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--json-bg-subtle);
    border-bottom: 1px solid var(--json-border);
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.8rem;
    color: var(--json-text-muted);
    min-height: 36px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.path-bar.visible {
    display: flex;
}

.path-bar svg {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    color: var(--json-primary);
    stroke: var(--json-primary);
}

.path-bar .path-text {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Tree Panel */
.tree-panel {
    height: 100%;
    overflow: auto;
    padding: 20px 24px;
    background: var(--json-bg-elevated);
}

.tree-container {
    font-family: 'SF Mono', Consolas, Monaco, 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Tree Node */
.tree-node {
    margin-left: 1.25rem;
    position: relative;
}

.tree-row {
    display: flex;
    align-items: flex-start;
    padding: 0.2rem 0.4rem;
    cursor: pointer;
    border-radius: var(--json-radius-sm);
    transition: background var(--json-transition);
}

.tree-row:hover {
    background: var(--json-primary-light);
}

.tree-row.search-match {
    background: var(--json-warning-light, rgba(217, 119, 6, 0.12));
}

.tree-row.search-current {
    background: var(--json-primary-light);
    outline: 2px solid var(--json-primary);
    outline-offset: -2px;
}

.tree-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin-right: 0.25rem;
    color: var(--json-text-muted);
    transition: transform var(--json-transition);
    flex-shrink: 0;
}

.tree-toggle.collapsed {
    transform: rotate(-90deg);
}

.tree-toggle svg {
    width: 14px;
    height: 14px;
}

.tree-toggle-placeholder {
    width: 20px;
    margin-right: 0.25rem;
    flex-shrink: 0;
}

.tree-key {
    color: var(--json-key);
    font-weight: 600;
    margin-right: 0.5rem;
}

.tree-colon {
    color: var(--json-text-muted);
    margin-right: 0.5rem;
}

.tree-value { word-break: break-word; }
.tree-value.string { color: var(--json-string); }
.tree-value.number { color: var(--json-number); }
.tree-value.boolean { color: var(--json-boolean); }
.tree-value.null { color: var(--json-null); font-style: italic; }

.tree-bracket {
    color: var(--json-bracket);
    font-weight: 600;
}

.tree-preview {
    color: var(--json-text-muted);
    font-size: 0.8rem;
    margin-left: 0.5rem;
}

.tree-children {
    overflow: hidden;
    transition: max-height var(--json-transition);
}

.tree-children.collapsed {
    display: none;
}

/* Type Badge */
.type-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.4rem;
    border-radius: var(--json-radius-sm);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-left: 0.5rem;
    flex-shrink: 0;
}

.type-badge.string { background: rgba(15, 118, 110, 0.12); color: var(--json-string); }
.type-badge.number { background: rgba(37, 99, 235, 0.12); color: var(--json-number); }
.type-badge.boolean { background: rgba(180, 83, 9, 0.12); color: var(--json-boolean); }
.type-badge.null { background: rgba(107, 114, 128, 0.12); color: var(--json-null); }
.type-badge.array { background: rgba(109, 40, 217, 0.12); color: var(--json-purple); }
.type-badge.object { background: rgba(51, 153, 204, 0.12); color: var(--json-primary); }

/* Code Panel */
.code-panel {
    height: 100%;
    overflow: auto;
    background: var(--json-code-bg);
}

.code-wrapper {
    display: flex;
    min-height: 100%;
}

.line-numbers {
    padding: 1.5rem 1rem;
    background: var(--json-code-gutter);
    color: var(--json-code-gutter-text);
    text-align: right;
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    user-select: none;
    border-right: 1px solid var(--json-code-gutter-border);
    flex-shrink: 0;
}

.code-content {
    flex: 1;
    padding: 1.5rem;
    margin: 0;
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--json-code-text);
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
}

/* Code syntax highlighting */
.code-content .json-key { color: #c4b5fd; }
.code-content .json-string { color: #6ee7b7; }
.code-content .json-number { color: #93c5fd; }
.code-content .json-boolean { color: #fdba74; }
.code-content .json-null { color: #9ca3af; font-style: italic; }
.code-content .json-bracket { color: #94a3b8; }

/* Table Panel */
.table-panel {
    height: 100%;
    overflow: auto;
    background: var(--json-bg-elevated);
}

.table-container {
    padding: 1.5rem;
    min-height: 100%;
}

.table-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--json-text-muted);
}

.table-message svg {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.table-message h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: var(--json-text-secondary);
}

.table-message p {
    margin: 0;
    font-size: 0.9rem;
}

/* JSON Table */
.json-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.json-table th {
    position: sticky;
    top: 0;
    background: var(--json-primary);
    color: #ffffff;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

.json-table th:first-child {
    border-radius: var(--json-radius-sm) 0 0 0;
}

.json-table th:last-child {
    border-radius: 0 var(--json-radius-sm) 0 0;
}

.json-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--json-border);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--json-text);
}

.json-table tr:hover td {
    background: var(--json-primary-light);
}

.json-table tr:nth-child(even) td {
    background: var(--json-bg);
}

.json-table tr:nth-child(even):hover td {
    background: var(--json-primary-light);
}

/* Table export bar */
.table-export-bar {
    display: flex;
    justify-content: flex-end;
    padding: 0.75rem 0;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    padding: 12px 20px;
    background: var(--json-bg-subtle);
    border-bottom: 1px solid var(--json-border);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.85rem;
    color: var(--json-text-muted);
}

.stat-item svg {
    color: var(--json-primary);
    stroke: var(--json-primary);
    width: 16px;
    height: 16px;
}

.stat-item strong {
    color: var(--json-text);
    font-weight: 700;
}

/* Action Bar */
.action-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 20px;
    justify-content: center;
    background: var(--json-bg-elevated);
}

/* Buttons */
.jfv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 9px 16px;
    border-radius: var(--json-radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--json-transition), border-color var(--json-transition), color var(--json-transition);
    border: 1px solid transparent;
    text-decoration: none;
    line-height: 1.2;
}

.jfv-btn svg {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
}

.jfv-btn-primary {
    background: var(--json-primary);
    color: #ffffff;
}

.jfv-btn-primary:hover {
    background: var(--json-primary-dark);
}

.jfv-btn-secondary {
    background: var(--json-bg-subtle);
    color: var(--json-text);
    border: 1px solid var(--json-border);
}

.jfv-btn-secondary:hover {
    border-color: var(--json-primary);
    color: var(--json-primary);
}

.jfv-btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--json-radius-sm);
}

.jfv-btn-sm svg {
    width: 14px;
    height: 14px;
}

.jfv-btn-danger {
    background: var(--json-danger);
    color: #ffffff;
}

.jfv-btn-danger:hover {
    filter: brightness(0.94);
}

.jfv-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Compare Mode */
.compare-section {
    display: none;
    padding: 24px;
}

.compare-section.visible {
    display: block;
}

.compare-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.compare-header h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--json-text);
}

.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.compare-grid > * {
    min-width: 0;
}

.compare-pane textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.8rem;
    line-height: 1.6;
    resize: vertical;
    background: var(--json-bg);
    color: var(--json-text);
}

.compare-pane textarea:focus {
    outline: none;
    border-color: var(--json-primary);
}

.compare-pane label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--json-text-secondary);
    margin-bottom: 0.5rem;
}

.compare-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--json-radius-md);
    background: var(--json-bg);
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.8rem;
    max-height: 300px;
    overflow: auto;
    border: 1px solid var(--json-border);
}

.diff-added {
    background: var(--json-success-light);
    color: var(--json-success);
    padding: 1px 4px;
    border-radius: 3px;
}

.diff-removed {
    background: var(--json-danger-light);
    color: var(--json-danger);
    padding: 1px 4px;
    border-radius: 3px;
    text-decoration: line-through;
}

.diff-line {
    padding: 2px 0;
}

/* Related Tools */
.jfv-related-tools {
    background: var(--json-bg-elevated);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-lg);
    padding: 14px 18px;
    margin-top: 24px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.jfv-related-tools h2 {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--json-text);
    margin: 0;
}

.jfv-related-tools h2 svg {
    color: var(--json-primary);
    stroke: var(--json-primary);
    width: 16px;
    height: 16px;
}

.jfv-related-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.jfv-related-pills a {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    background: var(--json-bg-subtle);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-full);
    color: var(--json-text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: background var(--json-transition), border-color var(--json-transition), color var(--json-transition);
}

.jfv-related-pills a:hover {
    background: var(--json-primary-light);
    border-color: var(--json-primary);
    color: var(--json-primary);
}

/* Info Sections */
.jfv-info-sections {
    display: grid;
    gap: 24px;
    margin-top: 24px;
}

.jfv-info-card {
    background: var(--json-bg-elevated);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-lg);
    padding: 28px 32px;
}

.jfv-info-card h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--json-text);
    margin: 0 0 18px;
}

.jfv-info-card h2 svg {
    color: var(--json-primary);
    stroke: var(--json-primary);
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.jfv-info-card p {
    color: var(--json-text-secondary);
    line-height: 1.7;
    margin: 0 0 12px;
    font-size: 0.95rem;
}

.jfv-info-card ul {
    margin: 0 0 12px;
    padding-left: 1.25rem;
    color: var(--json-text-secondary);
}

.jfv-info-card li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    font-size: 0.93rem;
}

.jfv-info-card li:last-child {
    margin-bottom: 0;
}

.jfv-info-card li strong {
    color: var(--json-text);
}

.jfv-info-card code {
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.85em;
    background: var(--json-bg-subtle);
    border: 1px solid var(--json-border);
    border-radius: 5px;
    padding: 1px 5px;
    color: var(--json-text);
}

/* Steps List */
.jfv-steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: step;
}

.jfv-steps-list li {
    position: relative;
    padding-left: 3.5rem;
    padding-bottom: 1.25rem;
    margin-left: 1rem;
    counter-increment: step;
    color: var(--json-text-secondary);
    line-height: 1.7;
}

.jfv-steps-list li:last-child {
    padding-bottom: 0;
}

.jfv-steps-list li::before {
    content: counter(step);
    position: absolute;
    left: -1rem;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--json-primary);
    color: #ffffff;
    border-radius: var(--json-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.jfv-steps-list li strong {
    color: var(--json-text);
}

.jfv-steps-list li a {
    color: var(--json-primary);
    text-decoration: none;
    font-weight: 600;
}

.jfv-steps-list li a:hover {
    text-decoration: underline;
}

/* Features Grid */
.jfv-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.jfv-features-grid > * {
    min-width: 0;
}

.jfv-feature-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--json-bg-subtle);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    padding: 18px;
}

.jfv-feature-icon {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--json-primary-light);
    color: var(--json-primary);
}

.jfv-feature-icon svg {
    width: 20px;
    height: 20px;
    color: var(--json-primary);
    stroke: var(--json-primary);
}

/* Single-color icons - override legacy color variants */
.jfv-feature-icon.blue,
.jfv-feature-icon.green,
.jfv-feature-icon.purple,
.jfv-feature-icon.red {
    background: var(--json-primary-light);
    color: var(--json-primary);
}

.feature-content h3 {
    margin: 0 0 6px;
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--json-text);
}

.feature-content p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--json-text-secondary);
    line-height: 1.55;
}

.feature-content a {
    color: var(--json-primary);
    text-decoration: none;
    font-weight: 600;
}

.feature-content a:hover {
    text-decoration: underline;
}

/* Syntax Grid */
.syntax-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    margin-top: 8px;
}

.syntax-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--json-bg-subtle);
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    font-size: 0.875rem;
    color: var(--json-text-secondary);
    transition: border-color var(--json-transition), color var(--json-transition);
}

.syntax-badge:hover {
    border-color: var(--json-primary);
    color: var(--json-primary);
}

.type-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.syntax-badge.string .type-dot { background: var(--json-string); }
.syntax-badge.number .type-dot { background: var(--json-number); }
.syntax-badge.boolean .type-dot { background: var(--json-boolean); }
.syntax-badge.null .type-dot { background: var(--json-null); }
.syntax-badge.array .type-dot { background: var(--json-purple); }
.syntax-badge.object .type-dot { background: var(--json-primary); }

/* Internal links in descriptions */
.jfv-info-card p a,
.jfv-info-card .faq-answer a {
    color: var(--json-primary);
    text-decoration: none;
    font-weight: 600;
}

.jfv-info-card p a:hover,
.jfv-info-card .faq-answer a:hover {
    text-decoration: underline;
}

/* FAQ */
.faq-list {
    display: grid;
    gap: 10px;
}

.faq-item {
    border: 1px solid var(--json-border);
    border-radius: var(--json-radius-md);
    overflow: hidden;
    background: var(--json-bg-subtle);
}

.faq-question {
    width: 100%;
    padding: 14px 18px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--json-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    transition: color var(--json-transition);
    line-height: 1.4;
}

.faq-question:hover {
    color: var(--json-primary);
}

.faq-question svg {
    color: var(--json-primary);
    stroke: var(--json-primary);
    transition: transform var(--json-transition);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 18px 16px;
    background: transparent;
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-answer p {
    margin: 0;
    color: var(--json-text-secondary);
    line-height: 1.7;
    font-size: 0.93rem;
}

/* Keyboard shortcuts hint */
.shortcuts-hint {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--json-border);
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--json-text-muted);
}

kbd {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--json-border);
    border-radius: 4px;
    background: var(--json-bg-subtle);
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.75rem;
    color: var(--json-text-secondary);
}

/* Toast Notification */
.jfv-toast-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 11px 22px;
    background: var(--json-success);
    color: #ffffff;
    border-radius: var(--json-radius-full);
    box-shadow: var(--json-shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: transform var(--json-transition), opacity var(--json-transition);
    z-index: 9500;
    font-weight: 600;
    font-size: 0.88rem;
}

.jfv-toast-notification.visible {
    transform: translateY(0);
    opacity: 1;
}

.jfv-toast-notification svg {
    color: #ffffff;
    stroke: #ffffff;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* Responsive */
@media (max-width: 900px) {
    .viewer-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        justify-content: center;
    }

    .toolbar-center {
        order: 3;
    }

    .search-box {
        max-width: none;
    }

    .viewer-content {
        max-height: none;
    }

    .jfv-features-grid {
        grid-template-columns: 1fr;
    }

    .options-bar {
        justify-content: center;
    }

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

@media (max-width: 768px) {
    .tool-container {
        padding: 15px 10px 30px;
    }

    .jfv-upload-section {
        padding: 18px;
    }

    .jfv-upload-area {
        padding: 32px 16px;
    }

    .viewer-toolbar {
        padding: 12px 14px;
    }

    .options-bar {
        padding: 10px 14px;
        gap: 14px;
    }

    .tree-panel,
    .table-container {
        padding: 16px;
    }

    .stats-bar {
        gap: 14px;
        padding: 12px 14px;
    }

    .action-bar {
        flex-direction: column;
        padding: 18px;
    }

    .jfv-btn {
        width: 100%;
    }

    .file-info-bar {
        justify-content: center;
    }

    .jfv-paste-actions {
        flex-direction: column;
    }

    .jfv-paste-actions .jfv-btn {
        width: 100%;
    }

    .path-bar {
        padding: 8px 14px;
    }
}

@media (max-width: 480px) {
    .tool-title {
        font-size: 1.6rem;
    }

    .tool-title-row {
        flex-direction: column;
        gap: 10px;
    }

    .file-info-bar {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .view-toggle {
        width: 100%;
    }

    .view-toggle button {
        flex: 1;
        justify-content: center;
    }

    .toolbar-right {
        width: 100%;
        justify-content: space-between;
    }

    .stats-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .jfv-feature-item {
        flex-direction: column;
    }

    .syntax-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .shortcuts-hint {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Print Styles */
@media print {
    .jfv-upload-section,
    .viewer-toolbar,
    .options-bar,
    .action-bar,
    .stats-bar,
    .jfv-info-sections,
    .jfv-toast-notification,
    .path-bar {
        display: none !important;
    }

    .tool-main {
        box-shadow: none;
        border: none;
    }

    .editor-section {
        display: block !important;
    }

    .tree-panel,
    .code-panel {
        max-height: none;
        overflow: visible;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}