/* AccountAunt Main Stylesheet */
/* Brand Guidelines: /docs/brandbook.md */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Brand Colors */
    --color-primary: #007bff;
    --color-primary-hover: #0056b3;
    --color-primary-light: #e7f3ff;

    /* Neutral Colors */
    --color-background: #f5f5f5;
    --color-surface: #ffffff;
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-border: #dee2e6;

    /* Success States */
    --color-success: #28a745;
    --color-success-bg: #d4edda;
    --color-success-text: #155724;

    /* Error States */
    --color-error: #dc3545;
    --color-error-bg: #f8d7da;
    --color-error-text: #721c24;

    /* Warning States */
    --color-warning: #ffc107;
    --color-warning-bg: #fff3cd;
    --color-warning-text: #856404;

    /* Info States */
    --color-info: #17a2b8;
    --color-info-bg: #d1ecf1;
    --color-info-text: #0c5460;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-h1: 2rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --font-size-h4: 1rem;
    --font-size-base: 1rem;
    --font-size-small: 0.875rem;
    --font-size-tiny: 0.75rem;
    --line-height-tight: 1.25;
    --line-height-base: 1.5;
    --line-height-loose: 1.75;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 800px;
    --container-lg: 1024px;
    --container-xl: 1280px;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-background);
}

/* Typography */
h1 {
    font-size: var(--font-size-h1);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Layout Components */
.navbar {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
}

.navbar-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
}

.nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    text-decoration: none;
}

.nav-link.active {
    background-color: var(--color-primary);
    color: white;
}

.container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg) var(--spacing-2xl);
}

.container-md {
    max-width: var(--container-md);
}

/* Card Component */
.card {
    background: var(--color-surface);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    margin-bottom: 0;
}

/* Grid Layouts */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.stat-value {
    font-size: var(--font-size-h1);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Button Components */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    color: white;
}

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

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

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

.btn-danger:hover {
    background-color: #c82333;
}

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-warning-text);
}

.btn-warning:hover {
    background-color: #e0a800;
    color: var(--color-warning-text);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-small);
}

/* Badge Components */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--font-size-tiny);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

.badge-error {
    background-color: var(--color-error-bg);
    color: var(--color-error-text);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.badge-info {
    background-color: var(--color-info-bg);
    color: var(--color-info-text);
}

/* Table Components */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
}

.table th {
    background-color: #f8f9fa;
    padding: 12px 16px;
    text-align: left;
    font-weight: var(--font-weight-medium);
    border-bottom: 2px solid var(--color-border);
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
}

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

.table tbody tr {
    transition: background-color 0.15s ease;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
    cursor: pointer;
}

.table-clickable tbody tr:hover {
    background-color: var(--color-primary-light);
}

/* Form Components */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    font-size: var(--font-size-small);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* Alert Components */
.alert {
    padding: var(--spacing-md);
    border-radius: 4px;
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
    border-left: 4px solid var(--color-success);
}

.alert-error {
    background-color: var(--color-error-bg);
    color: var(--color-error-text);
    border-left: 4px solid var(--color-error);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background-color: var(--color-info-bg);
    color: var(--color-info-text);
    border-left: 4px solid var(--color-info);
}

/* Flash Messages (BEM naming: .flash__element--modifier) */
.flash-messages {
    margin-bottom: var(--spacing-lg);
}

.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid;
    animation: slideDown 0.3s ease;
}

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

.flash__message {
    flex-grow: 1;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
}

.flash__close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    padding: 0;
    margin-left: var(--spacing-md);
    transition: opacity 0.2s ease;
}

.flash__close:hover {
    opacity: 1;
}

.flash--success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
    border-left-color: var(--color-success);
}

.flash--error {
    background-color: var(--color-error-bg);
    color: var(--color-error-text);
    border-left-color: var(--color-error);
}

.flash--warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    border-left-color: var(--color-warning);
}

.flash--info {
    background-color: var(--color-info-bg);
    color: var(--color-info-text);
    border-left-color: var(--color-info);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.pagination a:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    text-decoration: none;
}

.pagination .active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

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

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-small {
    font-size: var(--font-size-small);
}

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

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* Loading State */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* Focus Indicators (Accessibility) */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced Motion (Accessibility) */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .navbar-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .navbar-nav {
        flex-direction: column;
        width: 100%;
    }

    .nav-link {
        text-align: center;
    }

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

    .container {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }
}

/* Detail View Specific Styles */
.detail-section {
    margin-bottom: var(--spacing-xl);
}

.detail-row {
    display: flex;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.detail-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    width: 200px;
    flex-shrink: 0;
}

.detail-value {
    color: var(--color-text-primary);
    flex-grow: 1;
    word-break: break-word;
}

.code-block {
    background-color: #f6f8fa;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--spacing-md);
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: var(--font-size-small);
}

.json-viewer {
    white-space: pre-wrap;
    word-wrap: break-word;
}