/* Admin dashboard. Internal tool, kept on its original dark look.
   Split out of the old styles.css when the user-facing screens moved to naura.css. */
#admin-screen {
    --bg-primary: #000000;
    --bg-secondary: #1c1c1e;
    --bg-tertiary: #2c2c2e;
    --bg-elevated: #3a3a3c;
    --glass-bg: rgba(28, 28, 30, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent-blue: #0a84ff;
    --accent-blue-hover: #409cff;
    --accent-green: #30d158;
    --accent-red: #ff453a;
    --accent-orange: #ff9f0a;
    --accent-purple: #bf5af2;
    --text-primary: rgba(255, 255, 255, 0.92);
    --text-secondary: rgba(255, 255, 255, 0.64);
    --text-tertiary: rgba(255, 255, 255, 0.38);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
}

/* ========== Admin Dashboard ========== */

#admin-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 200;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

#admin-screen.hidden {
    display: none;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.admin-header-btn {
    padding: 8px 18px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.admin-header-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Stats Cards */
.admin-stats {
    display: flex;
    gap: 16px;
}

.admin-stat-card {
    flex: 1;
    background: var(--glass-bg);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* Student Table */
.admin-table-wrap {
    background: var(--glass-bg);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    overflow-x: auto;
    box-shadow: var(--shadow-md);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.admin-table th {
    text-align: left;
    padding: 12px 16px;
    color: var(--text-tertiary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--glass-border);
}

.admin-table td {
    padding: 14px 16px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.admin-table tr:hover td {
    background: rgba(255,255,255,0.03);
}

.admin-actions {
    display: flex;
    gap: 8px;
}

.admin-action-btn {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--accent-blue);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.admin-action-btn:hover {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

.admin-empty {
    text-align: center;
    color: var(--text-tertiary);
    padding: 24px;
    font-size: 14px;
}

.admin-empty.hidden {
    display: none;
}

/* Detail Panel */
#admin-detail-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
}

#admin-detail-panel.hidden {
    display: none;
}

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

.admin-detail-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.admin-detail-body {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-msg-user, .admin-msg-assistant {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 14px;
    line-height: 1.5;
}

.admin-msg-user {
    background: rgba(10, 132, 255, 0.15);
    border-left: 3px solid var(--accent-blue);
}

.admin-msg-assistant {
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--text-tertiary);
}

.admin-memory-item {
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-purple);
}

.admin-memory-date {
    font-size: 12px;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 4px;
}

.admin-memory-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Admin responsive */
@media (max-width: 768px) {
    #admin-screen {
        padding: 16px;
        gap: 16px;
    }

    .admin-stats {
        flex-direction: column;
        gap: 10px;
    }

    .admin-stat-card {
        flex-direction: row;
        justify-content: space-between;
        padding: 16px 20px;
    }

    .stat-value {
        font-size: 24px;
    }

    .admin-table {
        font-size: 13px;
    }

    .admin-table th, .admin-table td {
        padding: 10px 12px;
    }

    #review-btn {
        right: 100px;
        padding: 6px 10px;
        font-size: 12px;
    }
}