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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --highlight-color: #fef3c7;
    --highlight-border: #f59e0b;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.main-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.nav-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-color);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.nav-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

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

main {
    margin-bottom: 3rem;
}

.dashboard {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.welcome-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.welcome-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.action-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
}

.action-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.action-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.action-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-box {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.content-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.content-section h2 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.form-horizontal {
    display: flex;
    flex-direction: column;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

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

.data-table tbody tr:hover {
    background: var(--bg-color);
}

.data-table code {
    background: var(--bg-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.success-message {
    background: #d1fae5;
    color: #065f46;
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--success-color);
}

.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--danger-color);
}

.no-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.no-data a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.no-data a:hover {
    text-decoration: underline;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-card {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 450px;
    width: 100%;
}

.login-card h1 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.login-footer {
    margin-top: 1.5rem;
    text-align: center;
}

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

.login-footer a:hover {
    text-decoration: underline;
}

.filter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-grid input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.roster-container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.roster-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 3px solid var(--primary-color);
}

.roster-header h1 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.roster-header h2 {
    font-size: 1.5rem;
    color: var(--text-muted);
    font-weight: 500;
}

.roster-section {
    margin-bottom: 3rem;
}

.roster-section h3 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.roster-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.roster-card {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.2s;
    position: relative;
}

.roster-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.roster-card.highlighted {
    background: var(--highlight-color);
    border-color: var(--highlight-border);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.roster-photo {
    width: 100%;
    height: 200px;
    margin-bottom: 1rem;
    border-radius: 6px;
    overflow: hidden;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.roster-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.no-photo {
    font-size: 4rem;
    opacity: 0.3;
}

.roster-info {
    text-align: center;
}

.roster-jersey {
    position: absolute;
    bottom: 0.25rem;
    left: 0.25rem;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    line-height: 1;
    z-index: 10;
}

.roster-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
}

.roster-detail {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.roster-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: transform 0.2s;
}

.btn-icon:hover {
    transform: scale(1.2);
}

.sample-data {
    background: var(--bg-color);
    padding: 1.5rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.sample-data h3 {
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.sample-data pre {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.help-text {
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 1rem;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.photo-item {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.2s;
}

.photo-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.photo-preview {
    width: 100%;
    height: 200px;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.no-photo-preview {
    color: var(--text-muted);
    font-size: 1rem;
}

.photo-info {
    padding: 1rem;
    text-align: center;
}

.photo-info strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

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

footer {
    background: var(--card-bg);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .main-nav {
        flex-direction: column;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .roster-grid {
        grid-template-columns: 1fr;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
}

@media print {
    .main-nav,
    .filter-form,
    .roster-actions,
    footer,
    .btn,
    header {
        display: none !important;
    }
    
    .roster-container {
        box-shadow: none;
        padding: 0;
    }
}