/* ============================================
   Baseball League Engine - Design System
   ============================================
   This is the SINGLE SOURCE OF TRUTH for all styling.
   Page-specific CSS should ONLY contain layout unique to that page.
   ============================================ */

/* ============================================
   1. CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Brand Colors */
    --color-primary: #667eea;
    --color-primary-hover: #5568d3;
    --color-secondary: #6c757d;
    --color-secondary-hover: #5a6268;
    --color-danger: #dc3545;
    --color-danger-hover: #c82333;
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-info: #2196f3;
    
    /* Neutral Colors */
    --color-bg: #f5f5f5;
    --color-bg-card: #ffffff;
    --color-bg-muted: #fafafa;
    --color-bg-table-header: #eef1fb;
    --color-bg-table-alt: #fdfdff;
    
    /* Text Colors */
    --color-text: #333333;
    --color-text-muted: #666666;
    --color-text-light: #888888;
    --color-text-heading: #1f2937;
    --color-text-table-header: #5f6380;
    
    /* Border Colors */
    --color-border: #e0e0e0;
    --color-border-light: #e5e7eb;
    --color-border-table: #e0e2ea;
    
    /* Alert Colors */
    --alert-error-bg: #f8d7da;
    --alert-error-text: #721c24;
    --alert-error-border: #f5c6cb;
    --alert-success-bg: #d4edda;
    --alert-success-text: #155724;
    --alert-success-border: #c3e6cb;
    --alert-warning-bg: #fff3cd;
    --alert-warning-text: #856404;
    --alert-warning-border: #ffeaa7;
    --alert-info-bg: #e3f2fd;
    --alert-info-text: #0c5460;
    --alert-info-border: #bee5eb;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-pill: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.7rem;
    --font-size-sm: 0.75rem;
    --font-size-base: 0.875rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    
    /* Page Layout */
    --page-max-width: 1800px;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

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

a:hover {
    text-decoration: underline;
}

/* ============================================
   3. Layout Components
   ============================================ */
.page-container {
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.container {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

/* ============================================
   4. Page Header
   ============================================ */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.page-header h1 {
    margin: 0;
    color: var(--color-text-heading);
    font-size: var(--font-size-2xl);
}

.page-header .actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Meta info row (for league/team info) */
.meta-info {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

.meta-info span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   5. Buttons
   ============================================ */
.btn {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-sm);
}

/* ============================================
   6. Tab Navigation
   ============================================ */
.tab-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border-light);
}

.tab-link {
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    color: #4b5563;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.tab-link:hover {
    color: var(--color-text-heading);
    text-decoration: none;
}

.tab-link.active {
    color: var(--color-text-heading);
    border-color: var(--color-primary);
}

/* ============================================
   7. Sections
   ============================================ */
.section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.section h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-heading);
}

/* Remove border when section follows tabs */
.tab-nav ~ .section {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

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

.section-heading h2 {
    margin: 0;
}

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

/* ============================================
   8. Data Tables
   ============================================ */
table.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

table.data-table thead {
    background: var(--color-bg-table-header);
}

table.data-table th,
table.data-table td {
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--color-border-table);
    font-size: var(--font-size-base);
    text-align: left;
}

table.data-table th {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-sm);
    color: var(--color-text-table-header);
    font-weight: 600;
}

table.data-table tbody tr:nth-child(even) {
    background: var(--color-bg-table-alt);
}

table.data-table th.rank,
table.data-table td.rank {
    text-align: center;
    width: 48px;
    min-width: 48px;
}

.numeric {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Historical rows (for standings showing historical data) */
.historical-row {
    transform: translateY(-4px);
}

.historical-row td {
    font-size: var(--font-size-sm);
    color: #5e6c84;
    border-top: none;
    padding: 0.15rem 0.75rem 0.3rem 0.75rem;
    line-height: 1.1;
}

table.data-table tbody tr:has(+ .historical-row) td {
    padding-bottom: 0.2rem;
}

/* ============================================
   9. Status Badges
   ============================================ */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.active {
    background: var(--color-success);
    color: white;
}

.status-badge.paused {
    background: var(--color-warning);
    color: white;
}

.status-badge.completed {
    background: #9e9e9e;
    color: white;
}

.status-badge.not_started {
    background: #e0e0e0;
    color: #666;
}

.status-badge.in_progress {
    background: var(--color-success);
    color: white;
}

/* Game status variant */
.game-status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
}

.game-status-badge.not_started {
    background: #e0e0e0;
    color: #666;
}

.game-status-badge.in_progress {
    background: var(--color-success);
    color: white;
}

.game-status-badge.completed {
    background: var(--color-info);
    color: white;
}

.game-status-badge.cancelled {
    background: var(--color-danger);
    color: white;
}

.game-status-badge.error {
    background: var(--color-warning);
    color: white;
}

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

.alert-error {
    background: var(--alert-error-bg);
    color: var(--alert-error-text);
    border: 1px solid var(--alert-error-border);
}

.alert-success {
    background: var(--alert-success-bg);
    color: var(--alert-success-text);
    border: 1px solid var(--alert-success-border);
}

.alert-warning {
    background: var(--alert-warning-bg);
    color: var(--alert-warning-text);
    border: 1px solid var(--alert-warning-border);
}

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

/* Info banner (for current date, etc.) */
.info-banner {
    background: var(--alert-info-bg);
    border-left: 4px solid var(--color-info);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-radius: var(--radius-sm);
}

.info-banner-label {
    color: #1976d2;
    font-size: var(--font-size-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.info-banner-value {
    color: var(--color-text);
    font-size: 1.1rem;
    font-weight: 600;
}

/* ============================================
   11. Cards
   ============================================ */
.card {
    border: 1px solid var(--color-border-table);
    border-radius: var(--radius-lg);
    background: var(--color-bg-table-alt);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-table);
    background: var(--color-bg-table-header);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #3a4061;
}

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

/* Grid layouts for cards */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-lg);
    font-family: inherit;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   13. Empty States
   ============================================ */
.empty-state {
    padding: var(--spacing-lg);
    text-align: center;
    color: #777;
    font-size: var(--font-size-base);
    background: #f8f9fb;
    border: 1px dashed #ccd3e0;
    border-radius: var(--radius-md);
}

.empty-state h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   14. Schedule Display
   ============================================ */
.schedule-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.schedule-table thead {
    background: var(--color-bg-table-header);
}

.schedule-table th,
.schedule-table td {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--color-border-table);
    font-size: var(--font-size-base);
    text-align: left;
}

.schedule-table th {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-sm);
    color: var(--color-text-table-header);
}

.schedule-table tbody tr:nth-child(even) {
    background: var(--color-bg-table-alt);
}

.schedule-table .time-cell {
    width: 120px;
    min-width: 120px;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    color: #374151;
    font-weight: 600;
}

.schedule-table .team {
    display: inline-block;
    font-weight: 600;
    color: var(--color-text-heading);
    text-decoration: none;
}

.schedule-table .team:hover {
    text-decoration: underline;
}

.schedule-table .team.highlight {
    color: #2d3a8c;
}

.schedule-table .badge {
    display: inline-block;
    margin-left: var(--spacing-sm);
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    background: #ffb74d;
    color: #4e2600;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.schedule-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: #6b7280;
    background: #f8f9fb;
    border: 1px dashed #ccd3e0;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
}

/* Month selector for schedule */
.schedule-month-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.schedule-month-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-text);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.schedule-month-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.schedule-month-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* ============================================
   15. Lineup/Roster Components
   ============================================ */
.lineup-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.lineup-card {
    border: 1px solid var(--color-border-table);
    border-radius: var(--radius-lg);
    background: var(--color-bg-table-alt);
    box-shadow: var(--shadow-sm);
}

.lineup-card header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-table);
    background: var(--color-bg-table-header);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #3a4061;
}

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

.lineup-card table th,
.lineup-card table td {
    padding: var(--spacing-sm) 0.75rem;
    border-top: 1px solid var(--color-border-table);
    font-size: 0.85rem;
}

.lineup-card table select {
    width: 100%;
    padding: 0.4rem 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    background: white;
    color: var(--color-text-heading);
}

.lineup-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

.roster-summary {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    color: #374151;
}

.roster-status-label {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #3a4061;
}

.roster-status-label.inactive {
    color: #6b7280;
}

/* ============================================
   16. Modals
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: var(--color-bg-card);
    margin: 2% auto;
    padding: var(--spacing-xl);
    border: 1px solid #888;
    width: 95%;
    max-width: 1200px;
    max-height: 90vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

/* ============================================
   17. Loading Spinner
   ============================================ */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

/* ============================================
   18. Standings-Specific Styles
   ============================================ */
.standings-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.standings-league h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-heading);
}

.standings-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.standings-table thead {
    background: var(--color-bg-table-header);
}

.standings-table th,
.standings-table td {
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--color-border-table);
    font-size: var(--font-size-base);
    text-align: left;
}

.standings-table th {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-sm);
    color: var(--color-text-table-header);
}

.standings-table tbody tr:nth-child(even) {
    background: var(--color-bg-table-alt);
}

.division-row {
    background: var(--color-bg-table-header) !important;
}

.division-row td {
    font-weight: 700;
    color: #3a4061;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: var(--font-size-sm);
}

.division-spacer td {
    height: 1rem;
    padding: 0;
    border: none;
}

.standings-header-row th {
    font-size: var(--font-size-sm);
}

.standings-team-name a {
    color: inherit;
    text-decoration: none;
}

.standings-team-name a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* Run differential colors */
.run-diff-positive {
    color: var(--color-success);
}

.run-diff-negative {
    color: var(--color-danger);
}

.run-diff-neutral {
    color: var(--color-text-muted);
}

/* ============================================
   19. Stats Tables (League Stats)
   ============================================ */
.league-stats-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.league-stats-table thead {
    background: var(--color-bg-table-header);
}

.league-stats-table th,
.league-stats-table td {
    padding: 0.4rem 0.5rem;
    border-top: 1px solid var(--color-border-table);
    font-size: var(--font-size-sm);
    text-align: left;
}

.league-stats-table th {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-xs);
    color: var(--color-text-table-header);
}

.league-stats-table tbody tr:nth-child(even) {
    background: var(--color-bg-table-alt);
}

.league-stats-team {
    display: flex;
    flex-direction: column;
}

.league-stats-team a {
    font-weight: 600;
    color: var(--color-text-heading);
}

.league-stats-team-links {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.league-stats-team-links a {
    color: var(--color-primary);
    font-weight: normal;
}

.league-stats-team-links .separator {
    margin: 0 var(--spacing-xs);
}

.league-stats-empty {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-muted);
}

/* Stats panel switcher */
.stats-panel-selector {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.stats-panel-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-text);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.stats-panel-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.stats-panel-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.stats-panel {
    display: none;
}

.stats-panel.active {
    display: block;
}

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

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

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden {
    display: none !important;
}

.inline-form {
    display: inline;
}

.ml-1 { margin-left: var(--spacing-sm); }
.ml-2 { margin-left: var(--spacing-md); }

/* Card body padding adjustment */
.card .card-body {
    padding: var(--spacing-md);
}