/* ================================================
   JSON Viewer - Phosphor Terminal Theme
   A sophisticated dark-first aesthetic inspired by
   vintage CRT phosphor displays meets modern minimalism
   ================================================ */

/* Google Fonts - loaded in HTML */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Outfit:wght@300;400;500;600&display=swap');

/* CSS Variables for theming */
:root {
    /* Phosphor color palette */
    --bg-primary: #0a0a0f;
    --bg-secondary: #0d0d14;
    --bg-tertiary: #13131c;
    --bg-editor: #0c0c12;
    --bg-elevated: #16161f;

    --text-primary: #e8e6e3;
    --text-secondary: #8a8a8a;
    --text-muted: #4a4a4a;

    --border-color: #1f1f2a;
    --border-glow: rgba(255, 191, 0, 0.1);

    /* Phosphor amber accent */
    --accent-color: #ffbf00;
    --accent-glow: rgba(255, 191, 0, 0.4);
    --accent-hover: #ffd033;
    --accent-dim: #a67c00;

    --success-color: #00ff88;
    --success-glow: rgba(0, 255, 136, 0.3);
    --error-color: #ff4757;
    --error-glow: rgba(255, 71, 87, 0.3);
    --warning-color: #ffa502;

    --diff-added: rgba(0, 255, 136, 0.1);
    --diff-removed: rgba(255, 71, 87, 0.1);
    --diff-added-text: #00ff88;
    --diff-removed-text: #ff6b7a;

    /* Syntax highlighting - neon palette */
    --syntax-string: #00ff88;
    --syntax-number: #00d4ff;
    --syntax-boolean: #ff6b9d;
    --syntax-null: #c792ea;
    --syntax-key: #ffbf00;
    --syntax-bracket: #6a6a7a;

    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px var(--accent-glow);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --header-height: 64px;
    --tabs-height: 48px;

    /* Fonts */
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light theme - refined cream palette */
[data-theme="light"] {
    --bg-primary: #faf9f7;
    --bg-secondary: #f5f4f2;
    --bg-tertiary: #eae9e7;
    --bg-editor: #ffffff;
    --bg-elevated: #ffffff;

    --text-primary: #1a1a1a;
    --text-secondary: #6b6b6b;
    --text-muted: #9a9a9a;

    --border-color: #e0deda;
    --border-glow: rgba(180, 140, 0, 0.15);

    --accent-color: #b48c00;
    --accent-glow: rgba(180, 140, 0, 0.25);
    --accent-hover: #c9a000;
    --accent-dim: #8a6b00;

    --success-color: #00a858;
    --error-color: #d63031;

    --diff-added: rgba(0, 168, 88, 0.12);
    --diff-removed: rgba(214, 48, 49, 0.12);
    --diff-added-text: #00875a;
    --diff-removed-text: #c0392b;

    --syntax-string: #00875a;
    --syntax-number: #0077b6;
    --syntax-boolean: #d63384;
    --syntax-null: #7c3aed;
    --syntax-key: #b48c00;
    --syntax-bracket: #6b6b6b;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

/* Reset and base styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    letter-spacing: -0.01em;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.015;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: 10000;
}

/* App container */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 24px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    margin: 0 -24px;
    position: relative;
}

/* Subtle glow line under header */
.header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--accent-color) 20%,
        var(--accent-color) 80%,
        transparent 100%);
    opacity: 0.3;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-color);
    text-shadow: 0 0 20px var(--accent-glow);
    letter-spacing: -0.05em;
}

.logo h1 {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Icon button */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid transparent;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    text-decoration: none;
}

.icon-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
    border-color: var(--border-color);
}

.theme-icon {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.icon-btn:hover .theme-icon {
    transform: rotate(15deg);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    padding: 12px 0;
    background: var(--bg-primary);
    margin: 0 -24px;
    padding-left: 24px;
    padding-right: 24px;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    position: relative;
    padding: 10px 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
}

.tab:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.tab.active {
    color: var(--accent-color);
    background: var(--bg-tertiary);
}

/* Active tab indicator */
.tab.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent-color);
    border-radius: 1px;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* Main content */
.main {
    flex: 1;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
}

/* Tab content */
.tab-content {
    display: none;
    flex-direction: column;
    flex: 1;
    gap: 16px;
    animation: fadeIn 0.2s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Toolbar */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

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

/* Status Badge */
.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: default;
    transition: all 0.2s ease;
}

.status-badge-icon {
    font-size: 0.875rem;
    line-height: 1;
}

.status-badge-text {
    white-space: nowrap;
}

.status-badge.valid {
    background: var(--diff-added);
    border-color: var(--success-color);
    color: var(--success-color);
}

.status-badge.valid .status-badge-icon {
    animation: pulse 2s ease-in-out infinite;
}

.status-badge.invalid {
    background: var(--diff-removed);
    border-color: var(--error-color);
    color: var(--error-color);
}

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

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 4px;
}

/* Ghost button variant */
.btn.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}

.btn.btn-ghost:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-box:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.search-icon {
    position: absolute;
    left: 10px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 160px;
    padding: 8px 10px 8px 32px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    outline: none;
}

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

.search-count {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-muted);
    padding-right: 8px;
    white-space: nowrap;
    min-width: 36px;
    text-align: right;
}

.search-count:empty {
    display: none;
}

.search-nav {
    display: flex;
    border-left: 1px solid var(--border-color);
}

.search-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.search-nav-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.search-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.search-nav-btn:first-child {
    border-radius: 0;
}

.search-nav-btn:last-child {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Search highlight */
.search-match {
    background: rgba(255, 165, 2, 0.35);
    color: inherit;
    border-radius: 2px;
    padding: 1px 2px;
    margin: -1px -2px;
}

.search-match.current {
    background: var(--accent-color);
    color: #0a0a0f;
    box-shadow: 0 0 6px var(--accent-glow);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.btn:hover {
    background: var(--bg-elevated);
    border-color: var(--text-muted);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.btn.primary {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #0a0a0f;
    font-weight: 600;
}

.btn.primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: 0 0 16px var(--accent-glow);
}

.btn.accent {
    background: transparent;
    border-color: var(--accent-dim);
    color: var(--accent-color);
}

.btn.accent:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #0a0a0f;
    box-shadow: 0 0 16px var(--accent-glow);
}

.btn-small {
    padding: 5px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: var(--font-sans);
}

.btn-small:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

/* Checkbox label */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-color);
    cursor: pointer;
}

/* Editor container */
.editor-container {
    flex: 1;
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.editor-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-editor);
    box-shadow: var(--shadow-md);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.editor-wrapper:focus-within {
    border-color: var(--accent-dim);
    box-shadow: var(--shadow-md), 0 0 0 3px var(--border-glow);
}

/* Line numbers */
.line-numbers {
    padding: 18px 14px;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    text-align: right;
    user-select: none;
    border-right: 1px solid var(--border-color);
    min-width: 54px;
    overflow: hidden;
    white-space: pre;
}

/* JSON Editor textarea */
.json-editor {
    flex: 1;
    width: 100%;
    padding: 18px;
    border: none;
    background: transparent;
    color: transparent;
    caret-color: var(--accent-color);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    overflow: auto;
    z-index: 1;
    position: relative;
}

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

/* Keep textarea text invisible during selection */
.json-editor::selection {
    color: transparent;
    background: var(--accent-color);
}

/* Highlighted code overlay */
.highlighted-code {
    position: absolute;
    top: 0;
    left: 54px;
    right: 0;
    bottom: 0;
    padding: 18px;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    overflow: auto;
    z-index: 2;
    color: var(--text-primary);
    pointer-events: none;
}

/* Fold buttons are clickable */
.fold-btn {
    pointer-events: auto;
}

/* Edit mode - textarea on top for editing */
.edit-mode .json-editor {
    z-index: 3;
    color: var(--text-primary);
    background: var(--bg-editor);
}

.edit-mode .highlighted-code {
    opacity: 0;
    pointer-events: none;
}

/* Syntax highlighting classes */
.json-string { color: var(--syntax-string); }
.json-number { color: var(--syntax-number); }
.json-boolean { color: var(--syntax-boolean); }
.json-null { color: var(--syntax-null); }
.json-key { color: var(--syntax-key); }
.json-bracket { color: var(--syntax-bracket); }

/* Fold buttons */
.fold-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
    cursor: pointer;
    user-select: none;
    color: var(--text-muted);
    opacity: 0.5;
    transition: opacity 0.15s ease, color 0.15s ease, transform 0.15s ease;
    pointer-events: auto;
    margin-right: 4px;
    font-size: 0.75em;
    vertical-align: middle;
}

.fold-btn:hover {
    opacity: 1;
    color: var(--accent-color);
    transform: scale(1.2);
}

.folded-placeholder {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.85em;
    background: var(--bg-tertiary);
    padding: 0 6px;
    border-radius: 3px;
    margin: 0 2px;
}

.json-error {
    background: var(--diff-removed);
    text-decoration: wavy underline var(--error-color);
}

/* Diff container */
.diff-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    flex: 1;
    min-height: 300px;
}

.diff-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-editor);
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease;
}

.diff-panel:focus-within {
    border-color: var(--accent-dim);
}

.diff-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.diff-editor {
    flex: 1;
    padding: 14px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    resize: none;
    outline: none;
}

.diff-editor::placeholder {
    color: var(--text-muted);
}

/* Diff result */
.diff-result {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.diff-result.hidden {
    display: none;
}

.diff-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.diff-result-header h3 {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.diff-count {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-color);
    padding: 4px 10px;
    background: rgba(255, 191, 0, 0.1);
    border: 1px solid var(--accent-dim);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.diff-output {
    padding: 16px;
    max-height: 300px;
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.diff-line {
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    border-left: 3px solid transparent;
}

.diff-line.added {
    background: var(--diff-added);
    color: var(--diff-added-text);
    border-left-color: var(--success-color);
}

.diff-line.removed {
    background: var(--diff-removed);
    color: var(--diff-removed-text);
    border-left-color: var(--error-color);
}

.diff-line.unchanged {
    color: var(--text-muted);
}

.diff-path {
    color: var(--text-secondary);
    font-weight: 600;
    margin-right: 8px;
}

/* Convert container */
.convert-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 16px;
    align-items: stretch;
    flex: 1;
    min-height: 300px;
}

.convert-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-editor);
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease;
}

.convert-panel:focus-within {
    border-color: var(--accent-dim);
}

.convert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.convert-editor {
    flex: 1;
    padding: 14px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    resize: none;
    outline: none;
}

.convert-editor::placeholder {
    color: var(--text-muted);
}

.convert-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-color);
    padding: 0 8px;
    font-family: var(--font-mono);
    text-shadow: 0 0 12px var(--accent-glow);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 520px;
    overflow: hidden;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.modal-header h2 {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.modal-close:hover {
    background: var(--bg-primary);
    color: var(--error-color);
}

.modal-body {
    padding: 22px;
}

.modal-body p {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.share-url-container {
    display: flex;
    gap: 10px;
}

.share-url-input {
    flex: 1;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.15s ease;
}

.share-url-input:focus {
    outline: none;
    border-color: var(--accent-dim);
}

.share-note {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 14px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    padding: 14px 28px;
    background: var(--bg-elevated);
    color: var(--accent-color);
    border: 1px solid var(--accent-dim);
    border-radius: var(--radius-lg);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg), 0 0 20px var(--accent-glow);
    z-index: 1100;
    animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toast.hidden {
    display: none;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(16px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0) scale(1);
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .app {
        padding: 0 16px;
    }

    .header {
        padding: 0 16px;
        margin: 0 -16px;
    }

    .logo h1 {
        font-size: 1rem;
    }

    .tabs {
        padding: 10px 16px;
        margin: 0 -16px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .tabs::-webkit-scrollbar {
        display: none;
    }

    .tab {
        padding: 10px 18px;
        font-size: 0.875rem;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 14px;
    }

    .toolbar-left {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

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

    .toolbar-divider {
        display: none;
    }

    .toolbar-group {
        justify-content: center;
    }

    .search-box {
        width: 100%;
    }

    .search-input {
        width: 100%;
        flex: 1;
    }

    .btn {
        padding: 10px 14px;
        font-size: 0.8125rem;
    }

    .btn.btn-ghost {
        padding: 10px 12px;
    }

    .editor-container {
        min-height: 300px;
    }

    .line-numbers {
        min-width: 44px;
        padding: 14px 10px;
        font-size: 0.75rem;
    }

    .json-editor {
        padding: 14px;
        font-size: 0.75rem;
    }

    .highlighted-code {
        left: 44px;
        padding: 14px;
        font-size: 0.75rem;
    }

    /* Diff - stack vertically on mobile */
    .diff-container {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .diff-panel {
        min-height: 180px;
    }

    /* Convert - stack vertically on mobile */
    .convert-container {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .convert-arrow {
        transform: rotate(90deg);
        padding: 10px 0;
    }

    .convert-panel {
        min-height: 140px;
    }

    .status-badge {
        order: -1;
        width: 100%;
        justify-content: center;
    }

    .modal-content {
        margin: 16px;
    }

    .share-url-container {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header-actions {
        gap: 4px;
    }

    .icon-btn {
        width: 36px;
        height: 36px;
    }

    .toolbar-left {
        width: 100%;
    }

    .toolbar-group {
        width: 100%;
        justify-content: stretch;
    }

    .toolbar-group .btn {
        flex: 1;
    }

    .btn {
        flex: 1;
        min-width: 0;
    }

    .toast {
        left: 16px;
        right: 16px;
        transform: none;
        text-align: center;
    }

    @keyframes toastIn {
        from {
            opacity: 0;
            transform: translateY(16px) scale(0.95);
        }
        to {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--text-muted) var(--bg-tertiary);
}

/* Selection styling */
::selection {
    background: var(--accent-color);
    color: #0a0a0f;
}

/* Print styles */
@media print {
    .header, .tabs, .toolbar {
        display: none;
    }

    .editor-wrapper {
        border: none;
    }

    body::before {
        display: none;
    }
}

/* ================================================
   Additional Micro-interactions & Polish
   ================================================ */

/* Button press effect */
.btn:active,
.btn-small:active {
    transform: translateY(1px) scale(0.98);
}

/* Status icon pulse - moved to status-badge */

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Subtle focus ring for accessibility */
.btn:focus-visible,
.tab:focus-visible,
.icon-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Editor cursor blink styling */
.json-editor {
    caret-color: var(--accent-color);
}

/* Smooth color transitions for syntax highlighting */
.json-string,
.json-number,
.json-boolean,
.json-null,
.json-key,
.json-bracket {
    transition: color 0.15s ease;
}

/* Logo hover effect */
.logo:hover .logo-icon {
    text-shadow: 0 0 30px var(--accent-glow), 0 0 60px var(--accent-glow);
}

/* Header gradient animation on hover */
.header:hover::after {
    opacity: 0.5;
}

/* Diff line hover effect */
.diff-line:hover {
    filter: brightness(1.1);
}

/* Convert arrow animation */
.convert-arrow {
    transition: transform 0.2s ease, text-shadow 0.2s ease;
}

.convert-container:hover .convert-arrow {
    text-shadow: 0 0 20px var(--accent-glow);
}

/* Keyboard shortcut styling in placeholder */
.json-editor::placeholder {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.8;
}

/* Error shake animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.status-badge.invalid {
    animation: shake 0.4s ease-out;
}

/* Smooth theme transition */
body,
.header,
.tabs,
.toolbar,
.editor-wrapper,
.diff-panel,
.convert-panel,
.modal-content,
.status-badge,
.toast {
    transition: background-color 0.2s ease,
                border-color 0.2s ease,
                color 0.2s ease,
                box-shadow 0.2s ease;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}