/**
 * Main Styles
 * Global styles, layout, and theme variables
 */

/* CSS Custom Properties (Variables) */
:root {
    --primary-color: #4a90e2;
    --primary-hover: #357abd;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;

    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-muted: #6c757d;

    --blunder-color: #dc3545;
    --mistake-color: #fd7e14;
    --inaccuracy-color: #ffc107;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
}

/* Header */
.app-header {
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--primary-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--box-shadow);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.app-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

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

.engine-status {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    margin-left: var(--spacing-sm);
}

.engine-status.ready {
    color: var(--success-color);
}

.engine-status.error {
    color: var(--error-color);
}

/* Navigation */
.main-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-tab {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    border-radius: 0;
}

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

.nav-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 500;
}

/* Page Sections */
.page-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Main Content */
.app-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Card Component */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

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

.section-header h2 {
    margin-bottom: 0;
}

.table-info {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-primary {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-secondary {
    color: #fff;
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: #5a6268;
    border-color: #545b62;
}

.btn-export {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-export:hover:not(:disabled) {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-import {
    color: #fff;
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-import:hover:not(:disabled) {
    background-color: #218838;
    border-color: #1e7e34;
}

.btn-icon {
    padding: 0.25rem 0.5rem;
    font-size: 1rem;
    background-color: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn-edit {
    color: var(--primary-color);
    margin-right: 0.25rem;
}

.btn-edit:hover {
    color: var(--primary-hover);
    background-color: rgba(74, 144, 226, 0.1);
}

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

.btn-delete:hover {
    color: #c82333;
    background-color: rgba(220, 53, 69, 0.1);
}

/* Notifications */
.notification-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.notification {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    font-size: 0.875rem;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease-in-out;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.notification-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.notification-info {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

/* Help Text */
.help-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Filters */
.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 120px;
}

.filter-group label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
}

.filter-group select {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    background-color: var(--card-bg);
    cursor: pointer;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* Multi-select dropdown */
.multi-select {
    position: relative;
    min-width: 120px;
}

.multi-select-trigger {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    background-color: var(--card-bg);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 1.5rem;
    position: relative;
}

.multi-select-trigger::after {
    content: '\25BC';
    font-size: 0.6rem;
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.multi-select.open .multi-select-trigger {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.multi-select-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    min-width: 150px;
    max-height: 200px;
    overflow-y: auto;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    z-index: 100;
    margin-top: 2px;
}

.multi-select.open .multi-select-dropdown {
    display: block;
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 0.4rem 0.6rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color 0.15s ease;
}

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

.checkbox-item input[type="checkbox"] {
    margin-right: 0.5rem;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .app-header h1 {
        font-size: 1.5rem;
    }

    .app-main {
        padding: var(--spacing-md);
    }

    .card {
        padding: var(--spacing-md);
    }

    .notification-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        max-width: none;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-rotate 0.75s linear infinite;
}

@keyframes spinner-rotate {
    100% {
        transform: rotate(360deg);
    }
}

/* Games Table Styles */
#games-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

#games-table th,
#games-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
}

#games-table thead {
    background-color: var(--bg-color);
    border-bottom: 2px solid var(--border-color);
}

#games-table th {
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
}

#games-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

#games-table tbody tr:hover {
    background-color: #f8f9fa;
}

#games-table th.col-count,
#games-table td.col-count {
    text-align: center;
    width: 90px;
    padding: var(--spacing-md) var(--spacing-lg);
}

.count-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 1.5rem;
}

.count-blunder {
    background-color: var(--blunder-color);
    color: #fff;
}

.count-mistake {
    background-color: var(--mistake-color);
    color: #fff;
}

.count-inaccuracy {
    background-color: var(--inaccuracy-color);
    color: #212529;
}

.elo {
    color: var(--text-muted);
    font-size: 0.85em;
}