/* =========================================================================
   OZ AutoPlacas — Design System
   ========================================================================= 
   Glassmorphism + Dark/Light theme + Responsive
   ========================================================================= */

/* =========================================================================
   Google Fonts
   ========================================================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* =========================================================================
   CSS Custom Properties
   ========================================================================= */
:root {
    /* Colors — Dark Theme (default) */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2235;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);
    --bg-glass-strong: rgba(255, 255, 255, 0.1);
    --bg-input: rgba(255, 255, 255, 0.06);
    --bg-input-focus: rgba(255, 255, 255, 0.1);

    --text-primary: #f0f4f8;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --accent-primary: #3b82f6;
    --accent-primary-hover: #2563eb;
    --accent-primary-glow: rgba(59, 130, 246, 0.3);
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #06b6d4;
    --info-bg: rgba(6, 182, 212, 0.1);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-primary-glow);

    --glass-blur: blur(20px);
    --glass-border: 1px solid var(--border-color);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;
    --header-height: 70px;
}

/* =========================================================================
   Light Theme
   ========================================================================= */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.6);
    --bg-glass-hover: rgba(255, 255, 255, 0.8);
    --bg-glass-strong: rgba(255, 255, 255, 0.9);
    --bg-input: rgba(0, 0, 0, 0.04);
    --bg-input-focus: rgba(0, 0, 0, 0.06);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #f8fafc;

    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 0, 0, 0.15);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

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

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

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

/* Animated background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

[data-theme="light"] body::before {
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.04) 0%, transparent 50%);
}

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

a:hover {
    color: var(--accent-primary-hover);
}

img { max-width: 100%; height: auto; }

/* =========================================================================
   Layout
   ========================================================================= */
.oz-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.oz-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.oz-main {
    flex: 1;
    padding: 40px 0;
}

/* =========================================================================
   Header
   ========================================================================= */
.oz-header {
    height: var(--header-height);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background var(--transition-normal);
}

.oz-header .oz-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.oz-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.oz-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 0.85rem;
}

.oz-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.oz-nav-link {
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.oz-nav-link:hover,
.oz-nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass-hover);
}

/* Theme toggle */
.oz-theme-toggle {
    width: 40px;
    height: 40px;
    border: var(--glass-border);
    border-radius: var(--border-radius-sm);
    background: var(--bg-glass);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.oz-theme-toggle:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: var(--border-color-hover);
}

/* =========================================================================
   Cards (Glassmorphism)
   ========================================================================= */
.oz-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.oz-card:hover {
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-md);
}

.oz-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.oz-card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* =========================================================================
   Forms
   ========================================================================= */
.oz-form-group {
    margin-bottom: 20px;
}

.oz-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.oz-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all var(--transition-fast);
    outline: none;
}

.oz-input:focus {
    background: var(--bg-input-focus);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

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

.oz-input-error {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 3px var(--danger-bg) !important;
}

/* Plate input — styled like Brazilian plate */
.oz-plate-input-wrapper {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.oz-plate-input {
    width: 100%;
    padding: 20px 24px;
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: var(--bg-glass-strong);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    outline: none;
}

.oz-plate-input:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.oz-plate-input.valid {
    border-color: var(--success);
    box-shadow: 0 0 0 3px var(--success-bg);
}

.oz-plate-input.invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px var(--danger-bg);
}

.oz-plate-format {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* =========================================================================
   Buttons
   ========================================================================= */
.oz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
    outline: none;
    position: relative;
    overflow: hidden;
}

.oz-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0);
    transition: background var(--transition-fast);
}

.oz-btn:hover::after {
    background: rgba(255, 255, 255, 0.1);
}

.oz-btn:active {
    transform: scale(0.98);
}

.oz-btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

.oz-btn-primary:hover {
    background: var(--accent-gradient-hover);
    box-shadow: var(--shadow-glow);
    color: white;
}

.oz-btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: var(--glass-border);
}

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

.oz-btn-danger {
    background: var(--danger);
    color: white;
}

.oz-btn-success {
    background: var(--success);
    color: white;
}

.oz-btn-sm {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

.oz-btn-lg {
    padding: 16px 32px;
    font-size: 1.0625rem;
    border-radius: var(--border-radius);
}

.oz-btn-full {
    width: 100%;
}

.oz-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* =========================================================================
   Result Card
   ========================================================================= */
.oz-result {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.oz-result-header {
    background: var(--accent-gradient);
    padding: 24px 32px;
    color: white;
}

.oz-result-brand-model {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.oz-result-plate {
    font-family: var(--font-mono);
    font-size: 1rem;
    opacity: 0.85;
    margin-top: 4px;
}

.oz-result-body {
    padding: 24px 32px;
}

.oz-result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.oz-result-row:last-child {
    border-bottom: none;
}

.oz-result-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.oz-result-value {
    font-weight: 600;
    color: var(--text-primary);
}

.oz-result-footer {
    padding: 16px 32px;
    background: var(--bg-glass);
    border-top: var(--glass-border);
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

/* =========================================================================
   Alerts & Messages
   ========================================================================= */
.oz-alert {
    padding: 16px 20px;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.oz-alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 1px;
}

.oz-alert-success {
    background: var(--success-bg);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.oz-alert-warning {
    background: var(--warning-bg);
    border-color: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.oz-alert-danger {
    background: var(--danger-bg);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.oz-alert-info {
    background: var(--info-bg);
    border-color: rgba(6, 182, 212, 0.2);
    color: var(--info);
}

/* =========================================================================
   Loader / Spinner
   ========================================================================= */
.oz-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.oz-spinner-lg {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

.oz-loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.oz-loading-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.oz-loading-card {
    background: var(--bg-glass-strong);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

/* =========================================================================
   Tables
   ========================================================================= */
.oz-table-wrapper {
    overflow-x: auto;
    border-radius: var(--border-radius);
    border: var(--glass-border);
}

.oz-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.oz-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-glass);
    border-bottom: var(--glass-border);
    white-space: nowrap;
}

.oz-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.oz-table tr:last-child td {
    border-bottom: none;
}

.oz-table tr:hover td {
    background: var(--bg-glass);
}

/* =========================================================================
   Badge
   ========================================================================= */
.oz-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.oz-badge-success { background: var(--success-bg); color: var(--success); }
.oz-badge-warning { background: var(--warning-bg); color: var(--warning); }
.oz-badge-danger  { background: var(--danger-bg);  color: var(--danger); }
.oz-badge-info    { background: var(--info-bg);    color: var(--info); }

/* =========================================================================
   Checkbox
   ========================================================================= */
.oz-checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.oz-checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--accent-primary);
    flex-shrink: 0;
}

/* =========================================================================
   Footer
   ========================================================================= */
.oz-footer {
    padding: 24px 0;
    border-top: var(--glass-border);
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.oz-footer a {
    color: var(--text-secondary);
}

.oz-footer a:hover {
    color: var(--accent-primary);
}

.oz-footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.oz-footer-disclaimer {
    max-width: 600px;
    margin: 12px auto 0;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--text-muted);
    opacity: 0.8;
}

/* =========================================================================
   Animations
   ========================================================================= */
@keyframes spin {
    to { transform: rotate(360deg); }
}

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

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

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

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

.oz-animate-in {
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.oz-animate-fade {
    animation: fadeIn 0.3s ease both;
}

/* Stagger animation for lists */
.oz-stagger > * {
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.oz-stagger > *:nth-child(1) { animation-delay: 0ms; }
.oz-stagger > *:nth-child(2) { animation-delay: 60ms; }
.oz-stagger > *:nth-child(3) { animation-delay: 120ms; }
.oz-stagger > *:nth-child(4) { animation-delay: 180ms; }
.oz-stagger > *:nth-child(5) { animation-delay: 240ms; }

/* =========================================================================
   Stat Cards (Dashboard)
   ========================================================================= */
.oz-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.oz-stat-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--border-radius);
    padding: 20px 24px;
    transition: all var(--transition-normal);
}

.oz-stat-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.oz-stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
}

.oz-stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.oz-stat-change {
    font-size: 0.75rem;
    margin-top: 4px;
    font-weight: 600;
}

.oz-stat-change.positive { color: var(--success); }
.oz-stat-change.negative { color: var(--danger); }

/* =========================================================================
   Pagination
   ========================================================================= */
.oz-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
}

.oz-pagination a,
.oz-pagination span {
    padding: 8px 14px;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.oz-pagination a {
    color: var(--text-secondary);
    background: var(--bg-glass);
    border: var(--glass-border);
}

.oz-pagination a:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.oz-pagination .active {
    background: var(--accent-gradient);
    color: white;
    border: none;
}

/* =========================================================================
   Utility
   ========================================================================= */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.hidden { display: none !important; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .oz-container {
        padding: 0 16px;
    }

    .oz-main {
        padding: 24px 0;
    }

    .oz-card {
        padding: 20px;
        border-radius: var(--border-radius);
    }

    .oz-plate-input {
        font-size: 1.5rem;
        padding: 16px 20px;
    }

    .oz-result-header {
        padding: 20px 24px;
    }

    .oz-result-body {
        padding: 16px 24px;
    }

    .oz-result-brand-model {
        font-size: 1.25rem;
    }

    .oz-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .oz-stat-value {
        font-size: 1.5rem;
    }

    .oz-nav {
        gap: 4px;
    }

    .oz-nav-link {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .oz-footer-links {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .oz-plate-input {
        font-size: 1.25rem;
        letter-spacing: 0.1em;
    }

    .oz-stats-grid {
        grid-template-columns: 1fr;
    }

    .oz-result-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .oz-btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }
}

/* =========================================================================
   Print
   ========================================================================= */
@media print {
    body::before { display: none; }
    .oz-header, .oz-footer, .oz-theme-toggle, .oz-btn { display: none; }
    .oz-card { box-shadow: none; border: 1px solid #ddd; }
    .oz-result { break-inside: avoid; }
}