/**
 * Vibe Driver - TRON-Inspired Neon Aesthetic
 * Dark theme with electric cyan, neon glows, animated gradients
 */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* === CSS Custom Properties === */
:root {
    /* TRON Colors - Electric Cyan/Blue */
    --bg-primary: #050508;
    --bg-secondary: #0a0a0f;
    --bg-tertiary: #101018;
    --bg-card: rgba(10, 15, 25, 0.85);
    --bg-glass: rgba(0, 240, 255, 0.02);
    --bg-hover: rgba(0, 240, 255, 0.08);

    --text-primary: #e8f4f8;
    --text-secondary: #8ba4b0;
    --text-muted: #4a6070;

    /* TRON Electric Cyan */
    --accent: #00f0ff;
    --accent-secondary: #6366f1;
    --accent-dim: rgba(0, 240, 255, 0.15);
    --accent-glow: rgba(0, 240, 255, 0.6);
    --neon-blue: #00d4ff;
    --neon-purple: #a855f7;

    --success: #00ff9f;
    --warning: #ffc107;
    --error: #ff3366;

    --border: rgba(0, 240, 255, 0.12);
    --border-light: rgba(0, 240, 255, 0.25);
    --border-glow: rgba(0, 240, 255, 0.5);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Typography - Tech/Futuristic */
    --font-display: 'Orbitron', 'Rajdhani', sans-serif;
    --font-family: 'Rajdhani', 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

    /* Borders & Shadows */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 30px var(--accent-glow), 0 0 60px rgba(0, 240, 255, 0.3);
    --shadow-neon: 0 0 10px var(--accent), 0 0 20px var(--accent-glow), 0 0 40px rgba(0, 240, 255, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

body {
    font-family: var(--font-family);
    font-weight: 500;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated gradient background with grid lines */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.03) 50%, transparent 100%),
        radial-gradient(ellipse at 20% 0%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 240, 255, 0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
    animation: pulseBackground 8s ease-in-out infinite;
}

/* Subtle grid overlay for TRON effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
    opacity: 0.5;
}

@keyframes pulseBackground {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

a:hover {
    opacity: 0.8;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

/* Neon text effect for headings */
.neon-text {
    text-shadow: 0 0 10px var(--accent-glow), 0 0 20px var(--accent-glow);
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

/* === Layout === */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Backdrop (mobile) */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.sidebar-backdrop.active {
    opacity: 1;
}

@media (max-width: 768px) {
    .sidebar-backdrop {
        display: block;
        pointer-events: none;
    }
    .sidebar-backdrop.active {
        pointer-events: auto;
    }
}

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent) 0%, #0088ff 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-lg);
}

.nav-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: var(--space-sm) var(--space-md);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-xs);
}

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

.nav-item.active {
    background: var(--accent-dim);
    color: var(--accent);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border);
}

.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* === Header === */
.header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-title {
    font-size: 1.25rem;
    font-weight: 600;
}

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

/* === Content Area === */
.content {
    flex: 1;
    padding: var(--space-xl);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* === Cards === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    border-color: var(--border-light);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.1), inset 0 0 30px rgba(0, 240, 255, 0.02);
}

.card:hover::before {
    opacity: 1;
}

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

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

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

/* === Stats Cards === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.accent {
    color: var(--accent);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--neon-blue) 100%);
    color: var(--bg-primary);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--accent);
}

.btn-primary:hover {
    box-shadow: var(--shadow-neon);
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--neon-blue) 0%, var(--accent) 100%);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-danger {
    background: rgba(255, 68, 102, 0.2);
    color: var(--error);
    border: 1px solid rgba(255, 68, 102, 0.3);
}

.btn-danger:hover {
    background: rgba(255, 68, 102, 0.3);
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--space-lg) var(--space-xl);
    font-size: 1rem;
}

.btn-icon {
    padding: var(--space-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* === Forms === */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

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

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

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

/* === Chat Interface === */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 80px);
    max-height: 800px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.message {
    max-width: 80%;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    line-height: 1.5;
}

.message-user {
    background: var(--accent);
    color: var(--bg-primary);
    align-self: flex-end;
    border-bottom-right-radius: var(--radius-sm);
}

.message-assistant {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    align-self: flex-start;
    border-bottom-left-radius: var(--radius-sm);
}

.message-assistant pre {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: var(--space-sm) 0;
}

/* Copyable values */
.copyable {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 4px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.9em;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.copyable:hover {
    background: rgba(0, 240, 255, 0.2);
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.copyable .copy-icon {
    width: 14px;
    height: 14px;
    opacity: 0.6;
    flex-shrink: 0;
}

.copyable:hover .copy-icon {
    opacity: 1;
}

.copyable.copied {
    background: rgba(0, 255, 159, 0.2);
    border-color: var(--success);
    color: var(--success);
}

.copyable.copied::after {
    content: 'Copied!';
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: var(--bg-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: var(--font-family);
    white-space: nowrap;
    animation: fadeInOut 1.5s ease;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateX(-50%) translateY(5px); }
    15% { opacity: 1; transform: translateX(-50%) translateY(0); }
    85% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(-5px); }
}

.message-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    cursor: pointer;
}

.message-image:hover {
    opacity: 0.9;
}

.message-file-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: var(--space-sm);
}

.chat-input-container {
    padding: var(--space-lg);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.chat-file-preview {
    max-width: 900px;
    margin: 0 auto var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.chat-file-preview-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.chat-file-preview-content img {
    max-width: 120px;
    object-fit: cover;
}

#chatFilePreviewInfo {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

#chatFilePreviewName {
    font-size: 0.9rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

.chat-attach-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

.chat-attach-btn.has-file {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
}

.chat-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    min-height: 48px;
    max-height: 120px;
}

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

.chat-send-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    color: var(--bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.chat-send-btn:hover {
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--space-md);
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-4px); opacity: 1; }
}

/* === Vehicle Cards === */
.vehicle-card {
    display: flex;
    flex-direction: column;
    gap: 0;
    cursor: pointer;
    padding: 0;
    overflow: hidden;
}

.vehicle-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-neon);
}

.vehicle-card .vehicle-stats,
.vehicle-card .vehicle-actions {
    padding: 0 var(--space-lg);
    margin: 0;
}

.vehicle-card .vehicle-stats {
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

.vehicle-card .vehicle-actions {
    padding-bottom: var(--space-lg);
}

.vehicle-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-dim);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.vehicle-info h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.vehicle-meta {
    display: flex;
    gap: var(--space-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.vehicle-stats {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

.vehicle-stat {
    flex: 1;
    text-align: center;
}

.vehicle-stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.vehicle-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

/* === Vehicle Photo Styles === */
.vehicle-photo-container {
    position: relative;
    width: 100%;
    height: 180px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
    cursor: pointer;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.vehicle-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base), filter var(--transition-base);
}

.vehicle-card:hover .vehicle-photo {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.vehicle-photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(0, 240, 255, 0.05) 100%);
}

.vehicle-photo-btn {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.vehicle-photo-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    box-shadow: var(--shadow-neon);
}

.vehicle-details {
    padding: var(--space-md);
    cursor: pointer;
}

.vehicle-name {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
}

.vehicle-color-badge {
    display: inline-block;
    padding: 2px 10px;
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--accent);
    margin-top: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
    gap: var(--space-md);
}

/* === Document List === */
.document-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.document-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.document-item:hover {
    background: var(--bg-hover);
}

.document-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.document-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Maintenance Timeline === */
.timeline {
    position: relative;
    padding-left: var(--space-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-xl) + 4px);
    top: 6px;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

.timeline-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.timeline-content {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.timeline-title {
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.timeline-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

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

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

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

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

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-top: 1px solid var(--border);
}

/* === Upload Zone === */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    color: var(--text-muted);
}

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

.upload-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Empty States === */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    color: var(--text-muted);
    opacity: 0.5;
}

.empty-title {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.empty-text {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* === Tabs === */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.tab {
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

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

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* === Badge === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-default {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-accent {
    background: var(--accent-dim);
    color: var(--accent);
}

.badge-success {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 170, 0, 0.2);
    color: var(--warning);
}

/* === Loading === */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 2000;
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: slideIn var(--transition-base);
}

.toast-success {
    border-color: var(--success);
}

.toast-error {
    border-color: var(--error);
}

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

/* === Auth Page === */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.auth-card {
    width: 100%;
    max-width: 400px;
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-logo h1 {
    font-size: 1.75rem;
    margin-top: var(--space-md);
}

.auth-logo p {
    color: var(--text-secondary);
    margin-top: var(--space-sm);
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--space-lg);
}

.auth-tab {
    flex: 1;
    padding: var(--space-md);
    text-align: center;
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-tab:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.auth-tab:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

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

/* === Vehicle Selector === */
.vehicle-selector {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.vehicle-selector:hover {
    border-color: var(--accent);
}

.vehicle-selector-info {
    flex: 1;
    min-width: 0;
}

.vehicle-selector-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.vehicle-selector-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Responsive === */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .content {
        padding: var(--space-md);
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .message {
        max-width: 90%;
    }

    .header {
        padding: var(--space-md);
    }

    .mobile-menu-btn {
        display: flex;
    }
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* === Selection === */
::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

/* === Focus visible === */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* === Page specific === */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* === Utility === */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.mt-md {
    margin-top: var(--space-md);
}

.mt-lg {
    margin-top: var(--space-lg);
}

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

.mb-lg {
    margin-bottom: var(--space-lg);
}