:root {
    --admin-bg: #f4f6f8;
    --admin-card: #ffffff;
    --admin-text: #1f2937;
    --admin-muted: #6b7280;
    --admin-primary: #d62828;
    --admin-primary-hover: #b51f1f;
    --admin-border: #e5e7eb;
    --admin-success: #10b981;
    --admin-error: #ef4444;
    --admin-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --radius: 6px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--admin-bg);
    color: var(--admin-text);
    line-height: 1.5;
}

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

a:hover {
    text-decoration: underline;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s;
}

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

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

.btn-secondary {
    background-color: #fff;
    color: var(--admin-text);
    border: 1px solid var(--admin-border);
}

.btn-secondary:hover {
    background-color: #f9fafb;
    text-decoration: none;
}

.btn-icon {
    font-size: 0.85rem;
    color: var(--admin-error);
}

.btn-icon:hover {
    text-decoration: underline;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--admin-primary);
}

.alert {
    border-radius: var(--radius);
    padding: 12px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Login */
.admin-login {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 360px;
    padding: 16px;
}

.login-card {
    background: var(--admin-card);
    border-radius: var(--radius);
    box-shadow: var(--admin-shadow);
    padding: 28px;
}

.login-card h1 {
    margin: 0 0 20px;
    font-size: 1.4rem;
    text-align: center;
}

/* Admin layout */
.admin-header {
    background: var(--admin-card);
    border-bottom: 1px solid var(--admin-border);
    box-shadow: var(--admin-shadow);
}

.admin-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-header h1 {
    margin: 0;
    font-size: 1.2rem;
}

.admin-nav {
    display: flex;
    gap: 16px;
    align-items: center;
}

.admin-nav a {
    color: var(--admin-text);
    font-size: 0.95rem;
}

.admin-nav a.logout {
    color: var(--admin-error);
}

.admin-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px;
}

.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.badge {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
}

.table-responsive {
    overflow-x: auto;
    background: var(--admin-card);
    border-radius: var(--radius);
    box-shadow: var(--admin-shadow);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--admin-border);
    white-space: nowrap;
}

.data-table th {
    background: #f9fafb;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.data-table tbody tr:hover {
    background: #f9fafb;
}

.sort-link {
    color: var(--admin-text);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.col-checkbox {
    width: 40px;
    text-align: center;
}

.col-actions {
    width: 80px;
    text-align: center;
}

.empty-state {
    text-align: center;
    color: var(--admin-muted);
    padding: 40px;
}

/* Toggle switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #d1d5db;
    border-radius: 24px;
    transition: 0.2s;
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: 0.2s;
}

.toggle input:checked + .toggle-slider {
    background-color: var(--admin-success);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* Pagination */
.pagination {
    display: flex;
    gap: 6px;
    margin-top: 20px;
    justify-content: center;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 10px;
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    color: var(--admin-text);
    font-size: 0.9rem;
}

.pagination a.active,
.pagination a:hover {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
    text-decoration: none;
}

.pairing-toolbar .toolbar-left {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.pairing-toolbar .btn {
    font-size: 0.85rem;
    padding: 8px 14px;
}

.pairing-toolbar .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.is-open {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--admin-card);
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 420px;
    z-index: 1001;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--admin-border);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.1rem;
}

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid var(--admin-border);
}

/* Matches grid */
.card-empty {
    background: var(--admin-card);
    border-radius: var(--radius);
    box-shadow: var(--admin-shadow);
    padding: 40px;
    text-align: center;
    color: var(--admin-muted);
}

.matches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.match-card {
    background: var(--admin-card);
    border-radius: var(--radius);
    box-shadow: var(--admin-shadow);
    padding: 16px;
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--admin-border);
}

.match-number {
    font-weight: 600;
    font-size: 0.9rem;
}

.match-fighters {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    text-align: center;
}

.fighter {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.fighter strong {
    font-size: 1rem;
}

.fighter span {
    font-size: 0.85rem;
    color: var(--admin-muted);
}

.fighter .team {
    font-size: 0.8rem;
    color: var(--admin-primary);
}

.vs {
    font-weight: 700;
    color: var(--admin-muted);
    font-size: 0.9rem;
}

/* Drag and drop */
.data-table tbody tr.dragging {
    opacity: 0.5;
    background: #f3f4f6;
}

.data-table tbody tr.drag-over {
    border-top: 2px solid var(--admin-primary);
}

.data-table tbody tr {
    cursor: grab;
}

.data-table tbody tr:active {
    cursor: grabbing;
}