/* Admin Panel Styles */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 220px;
    background: var(--card);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    flex-shrink: 0;
}
.admin-sidebar .sidebar-logo {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}
.admin-sidebar .sidebar-logo img { height: 24px; }
.admin-sidebar .sidebar-logo span {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav { list-style: none; }
.sidebar-nav li {
    padding: 10px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}
.sidebar-nav li:hover { color: var(--text-primary); background: var(--input-bg); }
.sidebar-nav li.active {
    color: var(--text-primary);
    background: var(--input-bg);
    border-left-color: var(--trendai-red);
    font-weight: 600;
}

.admin-main {
    flex: 1;
    padding: 24px 32px;
    overflow-y: auto;
}
.admin-top-bar {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 8px;
}
.admin-main h1 {
    font-size: 20px;
    margin-bottom: 20px;
}

/* Admin Tables */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.admin-table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}
.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.admin-table tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* Action Buttons */
.action-group { display: flex; gap: 6px; flex-wrap: wrap; }
.action-group .btn-sm { white-space: nowrap; }
.editable { cursor: pointer; border-bottom: 1px dashed var(--text-muted); padding-bottom: 1px; }
.editable:hover { border-bottom-color: var(--trendai-amber); color: var(--trendai-amber); }

/* Admin Panels */
.admin-panel { display: none; }
.admin-panel.active { display: block; }

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.settings-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
}
.settings-card h3 {
    font-size: 14px;
    margin-bottom: 16px;
    color: var(--trendai-red);
}

/* Submission log */
.submission-correct { color: var(--success); font-weight: 600; }
.submission-incorrect { color: var(--error); }

/* Stats row */
.stats-row {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    min-width: 140px;
}
.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}
.stat-card .stat-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* Challenge Config Cards */
.challenge-config-card {
    background: var(--card);
    border: 1px solid var(--trendai-amber);
    border-radius: 8px;
    margin-bottom: 16px;
}
.challenge-config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}
.challenge-config-body {
    padding: 16px 20px;
}
.challenge-config-body textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    resize: vertical;
    line-height: 1.5;
}
.challenge-config-body textarea:focus {
    outline: none;
    border-color: var(--trendai-red);
}
.challenge-config-body input[type="number"] {
    padding: 8px 12px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
}

/* Mobile admin */
@media (max-width: 768px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 12px 0;
    }
    .sidebar-nav { display: flex; overflow-x: auto; gap: 0; }
    .sidebar-nav li {
        padding: 8px 14px;
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
        font-size: 13px;
    }
    .sidebar-nav li.active { border-bottom-color: var(--trendai-red); border-left-color: transparent; }
    .admin-main { padding: 16px; }
    .admin-table { font-size: 12px; }
    .stats-row { gap: 8px; }
    .settings-grid { grid-template-columns: 1fr; }
}