/* ========================================
   CSS VARIABLES & THEME
   ======================================== */
:root {
    /* Colors - Brutalist Terminal Theme */
    --color-bg: #0a0e14;
    --color-bg-elevated: #151a23;
    --color-bg-input: #1a1f2e;
    --color-surface: #1e2533;
    --color-border: #2d3548;
    
    /* Accent Colors */
    --color-primary: #00ff9f;
    --color-primary-dark: #00cc7f;
    --color-secondary: #ff006e;
    --color-tertiary: #00d4ff;
    
    /* Text */
    --color-text: #e6edf3;
    --color-text-muted: #8b949e;
    --color-text-dim: #6e7681;
    
    /* Status */
    --color-success: #00ff9f;
    --color-error: #ff006e;
    --color-warning: #ffb800;
    
    /* Fonts */
    --font-display: 'Unbounded', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(0, 255, 159, 0.3);
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-mono);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0, 255, 159, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
    background: var(--color-bg-elevated);
    border-bottom: 2px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-bracket {
    color: var(--color-primary);
    font-size: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.main-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(0, 255, 159, 0.1);
}

.nav-link.coming-soon {
    opacity: 0.5;
    cursor: not-allowed;
}

.badge {
    background: var(--color-warning);
    color: var(--color-bg);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 700;
    margin-left: 0.5rem;
}

.premium-badge {
    color: var(--color-tertiary);
    border: 1px solid var(--color-tertiary);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.glitch {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
    animation: glitch-text 3s infinite;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--color-secondary);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--color-tertiary);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(10px, 9999px, 31px, 0); }
    20% { clip: rect(85px, 9999px, 140px, 0); }
    40% { clip: rect(20px, 9999px, 90px, 0); }
    60% { clip: rect(60px, 9999px, 120px, 0); }
    80% { clip: rect(40px, 9999px, 80px, 0); }
    100% { clip: rect(70px, 9999px, 100px, 0); }
}

@keyframes glitch-text {
    0%, 90%, 100% { transform: translate(0); }
    92% { transform: translate(-2px, 2px); }
    94% { transform: translate(2px, -2px); }
    96% { transform: translate(-2px, 0); }
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--color-text-muted);
    font-weight: 600;
    font-family: var(--font-mono);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-dim);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   CONTROLS
   ======================================== */
.tool-container {
    padding: var(--spacing-xl) 0;
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
}

.control-group {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-icon {
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg);
    box-shadow: 0 0 20px rgba(0, 255, 159, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 255, 159, 0.5);
}

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

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 2px solid var(--color-border);
}

.btn-ghost:hover {
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

.btn-premium {
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-primary));
    color: var(--color-bg);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.4);
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s ease;
}

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

/* Select Input */
.indent-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.label-text {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.select-input {
    background: var(--color-bg-input);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.select-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 159, 0.1);
}

/* ========================================
   STATUS BAR
   ======================================== */
.status-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-dim);
    animation: pulse-status 2s ease-in-out infinite;
}

.status-bar.success .status-indicator {
    background: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

.status-bar.error .status-indicator {
    background: var(--color-error);
    box-shadow: 0 0 10px var(--color-error);
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

#statusText {
    flex: 1;
    color: var(--color-text-muted);
}

.char-count {
    color: var(--color-text-dim);
    font-size: 0.85rem;
}

/* ========================================
   EDITOR AREA
   ======================================== */
.editor-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.editor-panel {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-title {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--color-primary);
    letter-spacing: 0.1em;
}

.valid-badge {
    background: var(--color-success);
    color: var(--color-bg);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.valid-badge.hidden {
    display: none;
}

.json-editor,
.json-output {
    flex: 1;
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.6;
    min-height: 400px;
    max-height: 600px;
    overflow: auto;
}

.json-editor {
    background: var(--color-bg-input);
    color: var(--color-text);
    border: none;
    resize: none;
    width: 100%;
}

.json-editor:focus {
    outline: none;
}

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

.json-output {
    background: var(--color-bg-input);
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--color-text);
}

/* JSON Syntax Highlighting */
.json-output .json-key {
    color: var(--color-tertiary);
}

.json-output .json-string {
    color: var(--color-success);
}

.json-output .json-number {
    color: var(--color-warning);
}

.json-output .json-boolean {
    color: var(--color-secondary);
}

.json-output .json-null {
    color: var(--color-text-dim);
}

/* ========================================
   HISTORY SECTION
   ======================================== */
.history-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.history-header {
    margin-bottom: var(--spacing-lg);
}

.history-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
}

.history-icon {
    color: var(--color-primary);
    font-size: 1.8rem;
}

.premium-tag {
    background: linear-gradient(135deg, var(--color-tertiary), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: var(--spacing-sm);
    border: 2px solid var(--color-tertiary);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    -webkit-text-fill-color: var(--color-tertiary);
}

.history-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-muted);
}

.history-empty p {
    margin-bottom: var(--spacing-sm);
}

.history-empty-sub {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.history-list {
    display: grid;
    gap: var(--spacing-md);
}

.history-item {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.history-item:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    background: var(--color-bg-elevated);
    border-top: 2px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-family: var(--font-display);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-section a {
    display: block;
    color: var(--color-text-muted);
    text-decoration: none;
    margin-bottom: var(--spacing-xs);
    transition: color 0.2s ease;
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: var(--color-text);
}

.footer-section p {
    color: var(--color-text-dim);
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-dim);
    font-size: 0.85rem;
}

/* ========================================
   TOAST NOTIFICATION
   ======================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--color-surface);
    color: var(--color-text);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast.hidden {
    display: none;
}

@keyframes slideIn {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 968px) {
    .editor-wrapper {
        grid-template-columns: 1fr;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-group {
        width: 100%;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .main-nav {
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    .site-header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   REGEX-SPECIFIC STYLES
   ======================================== */

/* Pattern Input Section */
.pattern-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.section-icon {
    color: var(--color-primary);
    font-size: 1.4rem;
}

.pattern-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: border-color 0.2s ease;
}

.pattern-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 159, 0.1);
}

.regex-delimiter {
    color: var(--color-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.regex-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    outline: none;
    padding: var(--spacing-sm);
}

.regex-input::placeholder {
    color: var(--color-text-dim);
}

.flags-input {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-tertiary);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    padding: var(--spacing-sm) var(--spacing-md);
    width: 80px;
    text-align: center;
    outline: none;
}

.flags-input:focus {
    border-color: var(--color-tertiary);
}

/* Flags Section */
.flags-section {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.flag-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    user-select: none;
}

.flag-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.flag-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.flag-label strong {
    color: var(--color-primary);
    font-family: var(--font-mono);
}

/* Pattern Library */
.pattern-library {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.library-content {
    margin-top: var(--spacing-md);
}

.library-content.hidden {
    display: none;
}

.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.library-item {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    font-family: var(--font-mono);
}

.library-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.library-item strong {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.library-item code {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    overflow-x: auto;
}

/* Test Section */
.test-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

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

.test-controls {
    display: flex;
    gap: var(--spacing-md);
}

.test-input {
    width: 100%;
    min-height: 200px;
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s ease;
}

.test-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 159, 0.1);
}

.test-input::placeholder {
    color: var(--color-text-dim);
}

/* Results Section */
.results-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

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

.highlighted-output {
    background: var(--color-bg-input);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.8;
    min-height: 200px;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--color-text);
}

.match-highlight {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 700;
    position: relative;
}

.match-highlight::after {
    content: attr(data-index);
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--color-secondary);
    color: var(--color-bg);
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 700;
}

/* Matches List */
.matches-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.matches-header {
    margin-bottom: var(--spacing-md);
}

.matches-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.matches-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
}

.match-item {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    font-family: var(--font-mono);
}

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

.match-index {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

.match-position {
    color: var(--color-text-dim);
    font-size: 0.85rem;
}

.match-text {
    color: var(--color-text);
    font-size: 0.95rem;
    padding: var(--spacing-sm);
    background: var(--color-bg-input);
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.match-groups {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.match-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
}

.group-label {
    color: var(--color-tertiary);
    font-weight: 700;
}

.group-value {
    color: var(--color-text-muted);
}

/* Explanation Section */
.explanation-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.explanation-header {
    margin-bottom: var(--spacing-md);
}

.explanation-content {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.explanation-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
}

.explanation-empty p {
    margin-bottom: var(--spacing-sm);
}

.explanation-empty-sub {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

/* Reference Section */
.reference-section {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.reference-header {
    margin-bottom: var(--spacing-lg);
}

.reference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.reference-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.reference-card h4 {
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.reference-card ul {
    list-style: none;
}

.reference-card li {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.reference-card code {
    background: var(--color-bg-input);
    color: var(--color-primary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    white-space: nowrap;
}

/* Match Count */
.match-count {
    color: var(--color-primary);
    font-weight: 700;
}

/* Responsive */
@media (max-width: 968px) {
    .library-grid,
    .reference-grid {
        grid-template-columns: 1fr;
    }
    
    .test-header,
    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .flags-section {
        flex-direction: column;
    }
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Support Link & Footer Additions */
.support-link {
    color: var(--color-secondary) !important;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    margin-top: var(--spacing-xs);
}

.footer-tagline a {
    color: var(--color-primary);
    text-decoration: none;
    transition: border-color 0.2s ease;
    border-bottom: 1px solid transparent;
}

.footer-tagline a:hover {
    border-bottom-color: var(--color-primary);
}