/* ADE - Automated Document Environment Styles */

:root {
    /* Color Palette - Industrial Blueprint Aesthetic */
    --bg-primary: #0a0e14;
    --bg-secondary: #0d1219;
    --bg-tertiary: #111820;
    --bg-card: #141b24;
    --bg-hover: #1a232e;
    
    --accent-primary: #00d4aa;
    --accent-secondary: #00a8ff;
    --accent-warning: #ffb800;
    --accent-error: #ff4757;
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    
    --border-color: #21262d;
    --border-accent: #30363d;
    
    /* Grid Lines */
    --grid-color: rgba(0, 212, 170, 0.03);
    
    /* Typography */
    --font-display: 'Outfit', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    
    /* Animation Timing - Micro-interactions */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Animation Durations */
    --duration-quick: 100ms;
    --duration-normal: 200ms;
    --duration-slow: 400ms;
    --duration-enter: 300ms;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* Grid Background Pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* App Container */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
}

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

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    animation: pulse 2s ease-in-out infinite;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-left: var(--space-sm);
    padding-left: var(--space-sm);
    border-left: 1px solid var(--border-color);
}

.nav {
    display: flex;
    gap: var(--space-sm);
    position: relative;
}

.nav-btn {
    position: relative;
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: color var(--duration-normal) var(--ease-out-expo),
                background var(--duration-normal) var(--ease-out-expo),
                border-color var(--duration-normal) var(--ease-out-expo);
}

/* Animated underline indicator */
.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 1px;
    transform: translateX(-50%);
    transition: width var(--duration-normal) var(--ease-out-expo);
}

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

.nav-btn:hover::after {
    width: 30%;
}

.nav-btn.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
    border-color: rgba(0, 212, 170, 0.3);
}

.nav-btn.active::after {
    width: 60%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--space-xl);
}

.view {
    display: none;
    animation: viewEnter var(--duration-enter) var(--ease-out-expo);
}

.view.active {
    display: block;
}

@keyframes viewEnter {
    from { 
        opacity: 0; 
        transform: translateY(12px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

/* View content stagger for children */
.view.active > * {
    animation: contentFadeUp var(--duration-slow) var(--ease-out-expo) backwards;
}

.view.active > *:nth-child(1) { animation-delay: 0ms; }
.view.active > *:nth-child(2) { animation-delay: 50ms; }
.view.active > *:nth-child(3) { animation-delay: 100ms; }

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

/* Upload View */
.upload-container {
    max-width: 600px;
    margin: 0 auto;
}

.upload-zone {
    border: 2px dashed var(--border-accent);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
    background: var(--bg-card);
    position: relative;
}

.upload-zone:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.05);
    box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.1);
}

.upload-zone.drag-over {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.08);
    transform: scale(1.02);
    box-shadow: 0 0 0 6px rgba(0, 212, 170, 0.15);
    animation: dragPulse 1s ease-in-out infinite;
}

@keyframes dragPulse {
    0%, 100% { box-shadow: 0 0 0 6px rgba(0, 212, 170, 0.15); }
    50% { box-shadow: 0 0 0 10px rgba(0, 212, 170, 0.08); }
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    color: var(--accent-primary);
    transition: transform var(--duration-normal) var(--ease-out-back);
}

.upload-icon svg {
    width: 100%;
    height: 100%;
    transition: transform var(--duration-normal) var(--ease-out-back);
}

/* Upload icon hover animation - gentle float */
.upload-zone:hover .upload-icon svg {
    animation: iconFloat 2s ease-in-out infinite;
}

.upload-zone.drag-over .upload-icon svg {
    animation: iconBounce 0.6s var(--ease-out-back) infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-10px) scale(1.05); }
}

.upload-zone h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.upload-formats {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Processing Status */
.processing-status {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.status-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-accent);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Double-ring spinner variant */
.spinner-double {
    width: 24px;
    height: 24px;
    position: relative;
}

.spinner-double::before,
.spinner-double::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 2px solid transparent;
}

.spinner-double::before {
    inset: 0;
    border-top-color: var(--accent-primary);
    animation: spin 0.8s linear infinite;
}

.spinner-double::after {
    inset: 4px;
    border-bottom-color: var(--accent-secondary);
    animation: spin 0.6s linear infinite reverse;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Skeleton loader utility */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 0%,
        var(--bg-hover) 50%,
        var(--bg-secondary) 100%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.progress-bar {
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width var(--duration-enter) var(--ease-out-expo);
    position: relative;
}

/* Progress bar shimmer effect */
.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%
    );
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Progress complete pulse */
.progress-fill[style*="100%"] {
    animation: progressComplete 0.5s var(--ease-out-back);
}

@keyframes progressComplete {
    0% { transform: scaleY(1); }
    50% { transform: scaleY(1.5); }
    100% { transform: scaleY(1); }
}

/* Result Card */
.result-card {
    margin-top: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    animation: resultCardEnter var(--duration-slow) var(--ease-out-expo);
}

@keyframes resultCardEnter {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.result-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(0, 212, 170, 0.1);
    border-bottom: 1px solid var(--border-color);
    animation: resultHeaderGlow 0.6s var(--ease-out-expo) 0.2s backwards;
}

@keyframes resultHeaderGlow {
    from {
        background: rgba(0, 212, 170, 0.3);
    }
    to {
        background: rgba(0, 212, 170, 0.1);
    }
}

.result-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1rem;
}

.result-icon.success {
    background: var(--accent-primary);
    color: var(--bg-primary);
    animation: successIconPop var(--duration-slow) var(--ease-out-back) 0.1s backwards;
}

@keyframes successIconPop {
    from {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    to {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.result-header h3 {
    font-weight: 600;
}

.result-details {
    padding: var(--space-lg);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.detail-value {
    font-weight: 500;
}

.detail-value.mono {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--accent-secondary);
}

.detail-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--space-md) 0;
}

.classification-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.class-item {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    transition: border-color var(--duration-normal) var(--ease-out-expo),
                background var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-normal) var(--ease-out-expo);
    animation: classItemEnter var(--duration-slow) var(--ease-out-expo) backwards;
}

/* Staggered entrance for classification items */
.class-item:nth-child(1) { animation-delay: 0.15s; }
.class-item:nth-child(2) { animation-delay: 0.2s; }
.class-item:nth-child(3) { animation-delay: 0.25s; }
.class-item:nth-child(4) { animation-delay: 0.3s; }
.class-item:nth-child(5) { animation-delay: 0.35s; }
.class-item:nth-child(6) { animation-delay: 0.4s; }
.class-item:nth-child(7) { animation-delay: 0.45s; }
.class-item:nth-child(8) { animation-delay: 0.5s; }
.class-item:nth-child(9) { animation-delay: 0.55s; }
.class-item:nth-child(10) { animation-delay: 0.6s; }

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

/* Hover effect for editable classification items */
.class-item:not(.readonly):hover {
    background: var(--bg-hover);
    border-color: var(--border-accent);
}

.class-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.class-value {
    font-weight: 600;
    color: var(--accent-primary);
}

/* Readonly Classification Fields (ISO 19650 Container Identification) */
.class-item.readonly {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.class-item.readonly .class-label {
    color: var(--text-muted);
}

.readonly-value {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    color: var(--text-secondary);
    opacity: 0.85;
}

/* Section Dividers for Classification Grid */
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
    margin: var(--space-xs) 0;
}

.section-divider.full-width {
    grid-column: 1 / -1;
    margin: var(--space-sm) 0;
}

/* Classification Section Label */
.classification-section-label {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-xs) 0;
    margin-top: var(--space-xs);
}

.classification-section-label.full-width {
    grid-column: 1 / -1;
}

.result-summary {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.result-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.keyword-tag {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 168, 255, 0.1);
    border: 1px solid rgba(0, 168, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-secondary);
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-quick) var(--ease-out-back);
    animation: keywordTagEnter var(--duration-slow) var(--ease-out-back) backwards;
}

/* Staggered entrance for keyword tags */
.keyword-tag:nth-child(1) { animation-delay: 0.4s; }
.keyword-tag:nth-child(2) { animation-delay: 0.45s; }
.keyword-tag:nth-child(3) { animation-delay: 0.5s; }
.keyword-tag:nth-child(4) { animation-delay: 0.55s; }
.keyword-tag:nth-child(5) { animation-delay: 0.6s; }
.keyword-tag:nth-child(6) { animation-delay: 0.65s; }
.keyword-tag:nth-child(7) { animation-delay: 0.7s; }
.keyword-tag:nth-child(8) { animation-delay: 0.75s; }

@keyframes keywordTagEnter {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(4px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.keyword-tag:hover {
    background: rgba(0, 168, 255, 0.2);
    border-color: rgba(0, 168, 255, 0.5);
    transform: translateY(-2px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-quick) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

/* Button ripple effect base */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn:active::before {
    width: 200%;
    height: 200%;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    width: 100%;
    margin-top: var(--space-lg);
    box-shadow: 0 2px 8px rgba(0, 212, 170, 0.2);
}

.btn-primary:hover {
    background: #00e6b8;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 212, 170, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 212, 170, 0.2);
}

/* Button disabled state */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled:hover {
    transform: none;
}

/* Browse View */
.browse-container {
    max-width: 1000px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow-x: auto;
    animation: breadcrumbEnter var(--duration-slow) var(--ease-out-expo);
}

@keyframes breadcrumbEnter {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.crumb {
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo);
    white-space: nowrap;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    position: relative;
}

.crumb:hover {
    color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.crumb::after {
    content: '/';
    margin-left: var(--space-sm);
    color: var(--text-muted);
    transition: color var(--duration-normal) var(--ease-out-expo);
}

.crumb:hover::after {
    color: var(--accent-primary);
}

.crumb:last-child {
    color: var(--text-primary);
    background: rgba(0, 212, 170, 0.05);
}

.crumb:last-child::after {
    display: none;
}

.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-md);
}

.folder-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-normal) var(--ease-out-back),
                box-shadow var(--duration-normal) var(--ease-out-expo);
    animation: folderItemEnter var(--duration-slow) var(--ease-out-expo) backwards;
}

/* Staggered entrance for folder items */
.folder-item:nth-child(1) { animation-delay: 0ms; }
.folder-item:nth-child(2) { animation-delay: 30ms; }
.folder-item:nth-child(3) { animation-delay: 60ms; }
.folder-item:nth-child(4) { animation-delay: 90ms; }
.folder-item:nth-child(5) { animation-delay: 120ms; }
.folder-item:nth-child(6) { animation-delay: 150ms; }
.folder-item:nth-child(7) { animation-delay: 180ms; }
.folder-item:nth-child(8) { animation-delay: 210ms; }
.folder-item:nth-child(9) { animation-delay: 240ms; }
.folder-item:nth-child(10) { animation-delay: 270ms; }
.folder-item:nth-child(11) { animation-delay: 300ms; }
.folder-item:nth-child(12) { animation-delay: 330ms; }

@keyframes folderItemEnter {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.folder-item:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(0, 212, 170, 0.2);
}

.folder-item:active {
    transform: translateY(-2px);
}

.folder-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    transition: transform var(--duration-normal) var(--ease-out-back);
}

.folder-icon-wrapper {
    position: relative;
    display: inline-block;
}

.folder-count-badge {
    position: absolute;
    top: -4px;
    right: -8px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
    line-height: 1.4;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.folder-item:hover .folder-count-badge {
    transform: scale(1.1);
    box-shadow: 0 3px 6px rgba(0, 212, 170, 0.4);
}

.folder-item:hover .folder-icon {
    transform: scale(1.1);
}

.folder-item.directory .folder-icon {
    color: var(--accent-warning);
}

.folder-item.file .folder-icon {
    color: var(--accent-secondary);
}

.folder-item.directory:hover .folder-icon {
    color: #ffc933;
}

.folder-item.file:hover .folder-icon {
    color: #33b8ff;
}

.folder-name {
    font-size: 0.875rem;
    text-align: center;
    word-break: break-word;
}

.folder-size {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Search View */
.search-container {
    max-width: 800px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

#search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
}

#search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15),
                0 4px 12px rgba(0, 0, 0, 0.2);
}

#search-input::placeholder {
    color: var(--text-muted);
    transition: opacity var(--duration-normal) var(--ease-out-expo);
}

#search-input:focus::placeholder {
    opacity: 0.5;
}

.search-btn {
    padding: var(--space-md);
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--bg-primary);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-quick) var(--ease-out-expo);
}

.search-btn:hover {
    background: #00e6b8;
    transform: scale(1.05);
}

.search-btn:active {
    transform: scale(0.95);
}

.search-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--duration-normal) var(--ease-out-expo);
}

.search-btn:hover svg {
    transform: scale(1.1);
}

/* Search button loading state */
.search-btn.loading svg {
    animation: searchSpin 0.8s linear infinite;
}

@keyframes searchSpin {
    to { transform: rotate(360deg); }
}

.search-filters {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.search-filters select {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
}

.search-filters select:hover {
    border-color: var(--border-accent);
    background: var(--bg-hover);
}

.search-filters select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15);
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
    animation: emptyStateFade var(--duration-slow) var(--ease-out-expo);
}

@keyframes emptyStateFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

.search-result-item {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-normal) var(--ease-out-back),
                box-shadow var(--duration-normal) var(--ease-out-expo);
    animation: searchResultEnter var(--duration-slow) var(--ease-out-expo) backwards;
}

/* Staggered cascade for search results */
.search-result-item:nth-child(1) { animation-delay: 0ms; }
.search-result-item:nth-child(2) { animation-delay: 50ms; }
.search-result-item:nth-child(3) { animation-delay: 100ms; }
.search-result-item:nth-child(4) { animation-delay: 150ms; }
.search-result-item:nth-child(5) { animation-delay: 200ms; }
.search-result-item:nth-child(6) { animation-delay: 250ms; }
.search-result-item:nth-child(7) { animation-delay: 300ms; }
.search-result-item:nth-child(8) { animation-delay: 350ms; }
.search-result-item:nth-child(9) { animation-delay: 400ms; }
.search-result-item:nth-child(10) { animation-delay: 450ms; }

@keyframes searchResultEnter {
    from {
        opacity: 0;
        transform: translateX(-12px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.search-result-item:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
    transform: translateX(4px);
    box-shadow: -4px 0 0 var(--accent-primary),
                0 4px 16px rgba(0, 0, 0, 0.2);
}

.result-file-icon {
    font-size: 2rem;
    color: var(--accent-secondary);
    transition: transform var(--duration-normal) var(--ease-out-back);
}

.search-result-item:hover .result-file-icon {
    transform: scale(1.1);
}

.result-content {
    flex: 1;
}

.result-filename {
    font-weight: 600;
    margin-bottom: var(--space-xs);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.result-path {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.result-tags {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tag {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.search-result-item:hover .tag {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.result-score {
    display: flex;
    align-items: center;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

/* Footer */
.footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Classification Editor (Editable Dropdowns) */
.class-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
}

.class-select:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.class-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15),
                0 0 0 1px rgba(0, 212, 170, 0.4);
    animation: selectFocusPulse 0.3s var(--ease-out-expo);
}

@keyframes selectFocusPulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
    100% { box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15), 0 0 0 1px rgba(0, 212, 170, 0.4); }
}

.class-item.full-width {
    grid-column: 1 / -1;
}

/* Save Correction Container */
.save-correction-container {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: rgba(0, 168, 255, 0.05);
    border: 1px solid rgba(0, 168, 255, 0.2);
    border-radius: var(--radius-md);
}

.correction-reason {
    margin-bottom: var(--space-md);
}

.correction-reason input,
.correction-reason-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    transition: all var(--duration-normal) var(--ease-out-expo),
                box-shadow var(--duration-normal) var(--ease-out-expo);
}

.correction-reason input:focus,
.correction-reason-input:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(0, 168, 255, 0.15),
                0 0 0 1px rgba(0, 168, 255, 0.4);
}

.correction-reason input::placeholder,
.correction-reason-input::placeholder {
    color: var(--text-muted);
    transition: opacity var(--duration-normal) var(--ease-out-expo);
}

.correction-reason input:focus::placeholder,
.correction-reason-input:focus::placeholder {
    opacity: 0.5;
}

.save-correction-container .btn-secondary {
    background: var(--accent-secondary);
    color: var(--bg-primary);
    width: 100%;
}

.save-correction-container .btn-secondary:hover {
    background: #00b8ff;
}

.save-correction-container .btn-secondary:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.correction-message {
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    text-align: center;
    animation: messageSlideDown var(--duration-slow) var(--ease-out-back);
}

@keyframes messageSlideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.correction-message:empty {
    display: none;
}

.correction-message.success {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    color: var(--accent-primary);
    animation: messageSlideDown var(--duration-slow) var(--ease-out-back),
               successPulse 0.5s var(--ease-out-expo) 0.2s;
}

@keyframes successPulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
    100% { box-shadow: 0 0 0 8px rgba(0, 212, 170, 0); }
}

.correction-message.error {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    color: var(--accent-error);
    animation: messageSlideDown var(--duration-slow) var(--ease-out-back),
               errorShake 0.4s var(--ease-out-expo) 0.1s;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    animation: overlayFadeIn var(--duration-enter) var(--ease-out-expo);
}

@keyframes overlayFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(4px);
    }
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    animation: modalSlideIn var(--duration-enter) var(--ease-out-back);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(255, 255, 255, 0.05);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-normal) var(--ease-out-back);
    z-index: 1;
}

.modal-close:hover {
    background: var(--accent-error);
    border-color: var(--accent-error);
    color: white;
    transform: rotate(90deg);
}

.modal-close:active {
    transform: rotate(90deg) scale(0.9);
}

.modal-header {
    padding: var(--space-lg);
    padding-right: calc(var(--space-lg) + 40px);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    animation: modalHeaderSlide var(--duration-slow) var(--ease-out-expo) 0.1s backwards;
}

@keyframes modalHeaderSlide {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header h2 {
    font-size: 1rem;
    font-family: var(--font-mono);
    color: var(--accent-secondary);
    word-break: break-all;
}

.modal-body {
    padding: var(--space-lg);
    max-height: 70vh;
    overflow-y: auto;
    animation: modalBodyFade var(--duration-slow) var(--ease-out-expo) 0.15s backwards;
}

@keyframes modalBodyFade {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Document Details in Modal */
.modal-doc-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.doc-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.doc-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.doc-value {
    font-weight: 500;
}

.doc-value.mono {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-secondary);
}

.doc-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--space-sm) 0;
}

.modal-doc-info h3 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-edit-toggle {
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-expo),
                transform var(--duration-quick) var(--ease-out-expo);
}

.btn-edit-toggle:hover {
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
    background: rgba(0, 168, 255, 0.1);
    transform: translateY(-1px);
}

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

.doc-classification-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.doc-class-item {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.doc-class-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.doc-class-value {
    font-weight: 600;
    color: var(--accent-primary);
}

.doc-classification-grid.edit-mode .doc-class-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-accent);
}

.modal-edit-actions {
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.modal-edit-buttons {
    display: flex;
    gap: var(--space-md);
}

.modal-edit-buttons .btn {
    flex: 1;
    margin-top: 0;
}

.modal-edit-buttons .btn-secondary {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.modal-edit-buttons .btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.doc-summary {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.doc-actions {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.doc-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
    margin: var(--space-md) 0;
}

/* Loading state */
.loading {
    text-align: center;
    color: var(--text-muted);
    padding: var(--space-xl);
    animation: loadingPulse 1.5s ease-in-out infinite;
}

@keyframes loadingPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Loading state with shimmer effect */
.loading::before {
    content: '';
    display: block;
    width: 24px;
    height: 24px;
    margin: 0 auto var(--space-md);
    border: 2px solid var(--border-accent);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.error {
    text-align: center;
    color: var(--accent-error);
    padding: var(--space-xl);
    animation: errorFadeIn var(--duration-slow) var(--ease-out-expo);
}

@keyframes errorFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Search result item cursor */
.search-result-item {
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .classification-grid {
        grid-template-columns: 1fr;
    }
    
    .search-filters {
        flex-direction: column;
    }
    
    .folder-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .doc-classification-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-edit-buttons {
        flex-direction: column;
    }
}