/* ===== NEUMORPHISM DESIGN SYSTEM ===== */
:root {
    /* Neumorphism Base Colors */
    --neu-base: #e6e6e6;
    --neu-base-dark: #d1d1d1;
    --neu-base-light: #f5f5f5;
    --neu-background: #e6e6e6;
    
    /* Neumorphism Shadows */
    --neu-shadow-light: #ffffff;
    --neu-shadow-dark: #bebebe;
    --neu-shadow-inset-light: #ffffff;
    --neu-shadow-inset-dark: #cccccc;
    
    /* Enhanced Color Palette */
    --primary: #667eea;
    --primary-dark: #5a6fd8;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #4ade80;
    --warning: #fbbf24;
    --error: #f87171;
    --info: #60a5fa;
    
    /* Text Colors */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Neumorphic Shadows */
    --shadow-neu-flat: 
        6px 6px 12px var(--neu-shadow-dark),
        -6px -6px 12px var(--neu-shadow-light);
    
    --shadow-neu-pressed: 
        inset 6px 6px 12px var(--neu-shadow-inset-dark),
        inset -6px -6px 12px var(--neu-shadow-inset-light);
    
    --shadow-neu-raised: 
        8px 8px 16px var(--neu-shadow-dark),
        -8px -8px 16px var(--neu-shadow-light);
    
    --shadow-neu-floating: 
        12px 12px 24px var(--neu-shadow-dark),
        -12px -12px 24px var(--neu-shadow-light);
    
    --shadow-neu-subtle: 
        3px 3px 6px var(--neu-shadow-dark),
        -3px -3px 6px var(--neu-shadow-light);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

*::before,
*::after {
    box-sizing: inherit;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--neu-background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ===== NEUMORPHIC COMPONENTS ===== */
.neu-card {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neu-flat);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.neu-card:hover {
    box-shadow: var(--shadow-neu-raised);
    transform: translateY(-2px);
}

.neu-card-pressed {
    box-shadow: var(--shadow-neu-pressed);
    transform: translateY(1px);
}

.neu-button {
    background: var(--neu-base);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-flat);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    overflow: hidden;
}

.neu-button:hover {
    box-shadow: var(--shadow-neu-raised);
    transform: translateY(-1px);
}

.neu-button:active {
    box-shadow: var(--shadow-neu-pressed);
    transform: translateY(1px);
}

.neu-button-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 
        6px 6px 12px rgba(102, 126, 234, 0.3),
        -6px -6px 12px rgba(255, 255, 255, 0.8);
}

.neu-button-primary:hover {
    box-shadow: 
        8px 8px 16px rgba(102, 126, 234, 0.4),
        -8px -8px 16px rgba(255, 255, 255, 0.9);
}

.neu-input {
    background: var(--neu-base);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-pressed);
    padding: var(--space-4) var(--space-5);
    font-family: var(--font-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    width: 100%;
    transition: var(--transition-normal);
}

.neu-input:focus {
    outline: none;
    box-shadow: 
        inset 6px 6px 12px var(--neu-shadow-inset-dark),
        inset -6px -6px 12px var(--neu-shadow-inset-light),
        0 0 0 3px rgba(102, 126, 234, 0.1);
}

.neu-select {
    background: var(--neu-base);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-flat);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-normal);
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--space-3) center;
    background-repeat: no-repeat;
    background-size: 1rem;
    padding-right: var(--space-10);
}

.neu-select:hover {
    box-shadow: var(--shadow-neu-raised);
}

.neu-select:focus {
    outline: none;
    box-shadow: 
        6px 6px 12px var(--neu-shadow-dark),
        -6px -6px 12px var(--neu-shadow-light),
        0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ===== HEADER STYLES ===== */
.header {
    background: var(--neu-background);
    padding: var(--space-6) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-8);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.header-icon {
    font-size: 2.5rem;
    color: var(--primary);
    padding: var(--space-4);
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neu-flat);
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.5px;
}

.header-stats {
    display: flex;
    gap: var(--space-6);
}

.stat-item {
    text-align: center;
    padding: var(--space-5);
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neu-flat);
    min-width: 100px;
    transition: var(--transition-normal);
}

.stat-item:hover {
    box-shadow: var(--shadow-neu-raised);
    transform: translateY(-2px);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    padding: var(--space-12) 0;
}

/* ===== CONTROL PANEL ===== */
.control-panel {
    background: var(--neu-base);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    margin-bottom: var(--space-12);
    box-shadow: var(--shadow-neu-floating);
    position: relative;
}

.control-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.panel-header h2 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.panel-header i {
    color: var(--primary);
    padding: var(--space-3);
    background: var(--neu-base);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-subtle);
}

.control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
}

.control-card {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-neu-flat);
    transition: var(--transition-normal);
    position: relative;
}

.control-card:hover {
    box-shadow: var(--shadow-neu-raised);
    transform: translateY(-3px);
}

.control-card h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.control-card h3 i {
    color: var(--primary);
    padding: var(--space-2);
    background: var(--neu-base);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-neu-subtle);
}

/* ===== FORMS ===== */
.add-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.input-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== KEYWORDS DISPLAY ===== */
.keywords-display {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.keyword-tag {
    background: var(--neu-base);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: var(--shadow-neu-subtle);
    transition: var(--transition-fast);
    position: relative;
}

.keyword-tag:hover {
    box-shadow: var(--shadow-neu-flat);
    transform: translateY(-1px);
}

.keyword-tag::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    opacity: 0.1;
}

/* ===== FILTER CONTROLS ===== */
.filter-controls {
    display: grid;
    gap: var(--space-4);
}

/* ===== ARTICLES SECTION ===== */
.articles-section {
    background: var(--neu-base);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-neu-floating);
    position: relative;
}

.articles-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--primary), var(--accent));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
    gap: var(--space-5);
}

.section-header h2 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.section-header h2 i {
    color: var(--primary);
    padding: var(--space-3);
    background: var(--neu-base);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-subtle);
}

.view-controls {
    display: flex;
    gap: var(--space-1);
    background: var(--neu-base);
    padding: var(--space-1);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-neu-pressed);
}

.view-btn {
    padding: var(--space-3);
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-btn.active,
.view-btn:hover {
    background: var(--neu-base);
    color: var(--primary);
    box-shadow: var(--shadow-neu-flat);
}

/* ===== ARTICLES GRID ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-8);
}

.articles-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* ===== ARTICLE CARD ===== */
.article-card {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-neu-flat);
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.article-card:hover::before {
    transform: scaleX(1);
}

.article-card:hover {
    box-shadow: var(--shadow-neu-raised);
    transform: translateY(-4px);
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-4);
    gap: var(--space-4);
}

.article-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.article-meta div {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.article-meta i {
    width: 16px;
    color: var(--primary);
    opacity: 0.7;
}

.article-actions {
    display: flex;
    gap: var(--space-2);
}

.action-btn {
    padding: var(--space-2) var(--space-3);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-neu-subtle);
    background: var(--neu-base);
    color: var(--text-primary);
}

.action-btn:hover {
    box-shadow: var(--shadow-neu-flat);
    transform: translateY(-1px);
}

.action-btn:active {
    box-shadow: var(--shadow-neu-pressed);
    transform: translateY(1px);
}

.relevance-btn.relevant {
    color: var(--success);
}

.relevance-btn.irrelevant {
    color: var(--text-muted);
}

.delete-btn {
    color: var(--error);
}

.article-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    line-height: 1.4;
    font-weight: 600;
}

.article-snippet {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    background: var(--neu-base);
    color: var(--text-primary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 500;
    box-shadow: var(--shadow-neu-subtle);
    position: relative;
}

.tag::before {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    right: 1px;
    bottom: 1px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    opacity: 0.1;
}

.language-tag::before {
    background: linear-gradient(135deg, var(--secondary), var(--accent));
}

.source-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.8rem;
    transition: var(--transition-fast);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-neu-subtle);
    background: var(--neu-base);
}

.source-link:hover {
    box-shadow: var(--shadow-neu-flat);
    transform: translateY(-1px);
}

/* ===== LOADING & EMPTY STATES ===== */
.loading-state,
.empty-state {
    text-align: center;
    padding: var(--space-16);
    color: var(--text-muted);
}

.loading-spinner {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: var(--space-6);
    padding: var(--space-6);
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neu-flat);
    display: inline-block;
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: var(--space-6);
    padding: var(--space-8);
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neu-pressed);
    display: inline-block;
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    font-family: var(--font-heading);
    font-weight: 600;
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(230, 230, 230, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--space-8);
}

.modal-content {
    background: var(--neu-base);
    border-radius: var(--radius-xl);
    max-width: 800px;
    margin: 5% auto;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-neu-floating);
    position: relative;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-8);
    border-bottom: 1px solid var(--neu-base-dark);
}

.modal-header h3 {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
}

.modal-close {
    background: var(--neu-base);
    border: none;
    font-size: 1.2rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-3);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-neu-flat);
}

.modal-close:hover {
    color: var(--text-primary);
    box-shadow: var(--shadow-neu-raised);
}

.modal-body {
    padding: var(--space-8);
}

.modal-article-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.modal-meta {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-neu-pressed);
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.meta-item strong {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.meta-item span {
    color: var(--text-primary);
    font-weight: 500;
}

.modal-snippet,
.modal-keywords {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-neu-flat);
}

.modal-snippet h4,
.modal-keywords h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    font-size: 1.1rem;
    font-weight: 600;
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.modal-actions {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
    flex-wrap: wrap;
}

.modal-actions .neu-button {
    flex: 1;
    min-width: 140px;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: var(--space-8);
    right: var(--space-8);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.toast {
    background: var(--neu-base);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-neu-floating);
    min-width: 320px;
    animation: slideInRight 0.3s ease;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--success);
}

.toast.error::before {
    background: var(--error);
}

.toast.warning::before {
    background: var(--warning);
}

.toast.info::before {
    background: var(--info);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-6);
    }
    
    .header-stats {
        justify-content: center;
    }
    
    .logo-text h1 {
        font-size: 1.5rem;
    }
    
    .control-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal {
        padding: var(--space-4);
    }
    
    .modal-content {
        margin: 2% auto;
        max-height: 95vh;
    }
    
    .toast-container {
        top: var(--space-4);
        right: var(--space-4);
        left: var(--space-4);
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--space-8) 0;
    }
    
    .control-panel,
    .articles-section {
        padding: var(--space-6);
    }
    
    .article-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .article-actions {
        justify-content: flex-end;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.neu-button:focus,
.neu-input:focus,
.neu-select:focus {
    outline: none;
    box-shadow: 
        6px 6px 12px var(--neu-shadow-dark),
        -6px -6px 12px var(--neu-shadow-light),
        0 0 0 3px rgba(102, 126, 234, 0.3);
}

.article-card:focus {
    outline: none;
    box-shadow: 
        8px 8px 16px var(--neu-shadow-dark),
        -8px -8px 16px var(--neu-shadow-light),
        0 0 0 3px rgba(102, 126, 234, 0.3);
}

/* High contrast support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --text-muted: #666666;
        --neu-base: #ffffff;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }

.bg-neu { background: var(--neu-base); }
.shadow-neu { box-shadow: var(--shadow-neu-flat); }
.shadow-neu-raised { box-shadow: var(--shadow-neu-raised); }
.shadow-neu-pressed { box-shadow: var(--shadow-neu-pressed); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }