/*
 * REFACTORED ELO RANKING SYSTEM - PART 3
 * Complete CSS and JavaScript Files
 */

/* ============================================================================
   FILE: assets/css/style.css
   PURPOSE: Complete application styling
   ============================================================================ */

/* CSS Variables */
:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --text-dark: #333;
    --text-muted: #666;
    --text-light: #999;
    
    --border-color: #e0e0e0;
    --border-radius: 8px;
    --box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    --box-shadow-lg: 0 10px 30px rgba(0,0,0,0.2);
    
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-dark);
    line-height: 1.6;
    background: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
}

.navbar-brand a {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.navbar-menu a {
    color: var(--text-dark);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: background 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: #f0f0f0;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    box-shadow: var(--box-shadow-lg);
    border-radius: var(--border-radius);
    min-width: 200px;
    margin-top: var(--spacing-xs);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 12px var(--spacing-md);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 0;
}

.dropdown-menu a:hover {
    background: #f0f0f0;
}

/* Flash Messages */
.flash-message {
    padding: 15px;
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
    animation: slideDown 0.3s ease;
}

.flash-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid var(--success-color);
}

.flash-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--danger-color);
}

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

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-lg) 0;
}

/* Footer */
.footer {
    background: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--text-muted);
    margin-top: var(--spacing-lg);
    box-shadow: 0 -2px 5px rgba(0,0,0,0.05);
}

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

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-dark);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea {
    resize: vertical;
}

small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.875em;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: normal;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s, transform 0.2s;
    box-shadow: var(--box-shadow);
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

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

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

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

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

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
}

.button-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* Filter Section */
.filter-section {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-md);
}

.filter-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-group > .form-group {
    flex: 1;
    min-width: 200px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-top: var(--spacing-md);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: #f5f5f5;
    font-weight: 600;
    color: var(--text-dark);
}

.data-table tr:hover {
    background: #f9f9f9;
}

.rank {
    font-weight: bold;
    color: var(--primary-color);
}

.rating {
    font-size: 1.2em;
    font-weight: 600;
}

/* Cards */
.match-card,
.profile-card,
.sport-section {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-md);
}

.match-card {
    border-left: 4px solid var(--primary-color);
    position: relative;
}

.match-date {
    font-size: 0.85em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.match-result {
    margin-top: var(--spacing-sm);
    font-size: 0.95em;
}

.winner {
    color: var(--success-color);
    font-weight: 600;
}

.loser {
    color: var(--danger-color);
}

.match-notes {
    font-size: 0.85em;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    font-style: italic;
}

/* Badges */
.sport-badge,
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 600;
    margin-right: var(--spacing-sm);
}

.sport-tennis {
    background: #fef3c7;
    color: #92400e;
}

.sport-padel {
    background: #dbeafe;
    color: #1e40af;
}

.sport-pickleball {
    background: #dcfce7;
    color: #166534;
}

.badge-admin {
    background: #dbeafe;
    color: #1e40af;
}

.badge-user {
    background: #f3f4f6;
    color: #6b7280;
}

.badge-active {
    background: #d1fae5;
    color: #065f46;
}

.badge-inactive {
    background: #fee2e2;
    color: #991b1b;
}

/* Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: var(--spacing-md);
}

.quick-stat-card {
    background: white;
    padding: 15px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--box-shadow);
}

.quick-stat-value {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary-color);
}

.quick-stat-label {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.stats-card {
    background: var(--bg-gradient);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2em;
    font-weight: bold;
    display: block;
}

.stat-label {
    font-size: 0.9em;
    opacity: 0.9;
}

/* Player Search */
.player-select-wrapper {
    position: relative;
}

.player-search {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    margin-bottom: var(--spacing-xs);
}

.player-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.player-dropdown.active {
    display: block;
}

.player-option {
    padding: 10px;
    cursor: pointer;
    transition: background 0.2s;
}

.player-option:hover {
    background: #f0f0f0;
}

/* Doubles Fields */
.doubles-fields {
    display: none;
}

/* Action Buttons */
.match-actions {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2em;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.action-btn:hover {
    opacity: 1;
}

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

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

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--box-shadow-lg);
}

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

.close-modal {
    background: none;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-note {
    background: #f0f0f0;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    font-size: 0.9em;
    color: var(--text-muted);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.modal-actions button {
    flex: 1;
}

/* Auth Pages */
.auth-page {
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-md);
}

.auth-card,
.setup-container {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--box-shadow-lg);
}

.auth-card h1,
.setup-container h1 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.auth-card h2,
.setup-container h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.auth-links {
    text-align: center;
    margin-top: var(--spacing-md);
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Profile Page */
.profile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.profile-info {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.profile-info p {
    margin-bottom: var(--spacing-sm);
}

/* Arrange Match */
.created-match-card {
    margin-top: var(--spacing-md);
}

.success-card {
    background: var(--bg-gradient);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.success-card h3 {
    margin: 0 0 15px 0;
    color: white;
}

.share-link-box {
    background: rgba(255,255,255,0.2);
    padding: 15px;
    border-radius: var(--border-radius);
    margin: 15px 0;
    word-break: break-all;
}

.share-link-box input {
    width: 100%;
    background: white;
    border: none;
    padding: 10px;
    border-radius: 4px;
    font-family: monospace;
}

.upcoming-section {
    margin-top: var(--spacing-lg);
}

/* Alerts */
.alert {
    padding: 12px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid var(--success-color);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--danger-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid var(--info-color);
}

/* Code Example */
.code-example {
    background: #f5f5f5;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.code-example code {
    font-family: monospace;
    font-size: 0.9em;
}

/* Page Description */
.page-description {
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

/* Rating Changes */
.rating-change {
    font-size: 0.9em;
    padding: 2px 6px;
    border-radius: 4px;
}

.rating-up {
    color: var(--success-color);
    background: #d1fae5;
}

.rating-down {
    color: var(--danger-color);
    background: #fee2e2;
}

/* Form Indicators */
.form-indicator {
    display: inline-block;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin: 0 2px;
}

.form-win {
    background: var(--success-color);
}

.form-loss {
    background: var(--danger-color);
}

/* Streak Badges */
.streak-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: var(--border-radius);
    font-weight: 600;
    margin-left: var(--spacing-sm);
}

.streak-positive {
    background: #d1fae5;
    color: #065f46;
}

.streak-negative {
    background: #fee2e2;
    color: #991b1b;
}

/* Types Grid */
.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.type-card {
    background: #f5f5f5;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-align: center;
}

/* Chart Container */
#rating-chart-container {
    margin-top: var(--spacing-md);
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: #f9f9f9;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .filter-group {
        flex-direction: column;
    }
    
    .filter-group > .form-group {
        min-width: 100%;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .data-table {
        font-size: 0.9em;
    }
    
    .match-actions {
        position: static;
        float: right;
        margin-bottom: var(--spacing-sm);
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn-small {
        width: 100%;
    }
    
    .profile-grid {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 600px) {
    .data-table thead {
        display: none;
    }
    
    .data-table,
    .data-table tbody,
    .data-table tr,
    .data-table td {
        display: block;
    }
    
    .data-table tr {
        background: white;
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        margin-bottom: 15px;
        padding: 12px;
    }
    
    .data-table td {
        text-align: right;
        padding: 8px 0;
        border: none;
        position: relative;
        display: flex;
        justify-content: space-between;
    }
    
    .data-table td::before {
        content: attr(data-label);
        font-weight: bold;
        text-transform: uppercase;
        font-size: 0.75em;
        color: var(--text-muted);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }

/*
 * =============================================================================
 * END OF CSS - Continue to JavaScript in next section
 * =============================================================================
 */