* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #0077b6;
    --primary-dark: #005f8a;
    --whatsapp: #25D366;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    --dark: #2c3e50;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --table-header-bg: #f1f5f9;
    --hover-row: #fef9e3;
    --shadow: 0 10px 25px -5px rgba(0,0,0,0.05), 0 8px 10px -6px rgba(0,0,0,0.02);
}
.dark-mode {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --light-bg: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --table-header-bg: #0f172a;
    --hover-row: #334155;
    --shadow: 0 10px 25px -5px rgba(0,0,0,0.3);
}
body {
    font-family: 'Tajawal', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-main);
    padding: 20px;
    transition: background 0.3s, color 0.2s;
}
.container { max-width: 1600px; margin: 0 auto; }
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}
.logo-area h1 { font-size: 1.5rem; font-weight: 800; }
.logo-area i { color: var(--primary); margin-left: 8px; }
.actions-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.btn {
    padding: 8px 16px;
    border-radius: 40px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Tajawal', sans-serif;
}
.btn-primary { background: var(--primary); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-main); }
.btn-success { background: var(--success); color: white; }
.sound-select {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 6px 12px;
    font-family: 'Tajawal', sans-serif;
    color: var(--text-main);
    cursor: pointer;
    font-size: 0.8rem;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px,1fr));
    gap: 15px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 18px;
    border-right: 6px solid var(--primary);
    box-shadow: var(--shadow);
}
.stat-value { font-size: 2rem; font-weight: 800; }
.filters-panel {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
}
.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: flex-end;
}
.filter-group { flex: 1; min-width: 160px; }
.filter-group label { display: block; font-size: 0.7rem; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; }
.form-control {
    width: 100%;
    padding: 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text-main);
    font-family: 'Tajawal', sans-serif;
}
.status-filter-buttons {
    margin-top: 15px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}
.status-tab {
    background: #e2e8f0;
    color: #1e293b;
}
.dark-mode .status-tab { background: #334155; color: #f1f5f9; }
.status-tab.active { background: var(--primary); color: white; }
.table-wrapper {
    background: var(--card-bg);
    border-radius: 20px;
    overflow-x: auto;
    box-shadow: var(--shadow);
    min-height: 450px;
    contain: layout;
}
table { width: 100%; border-collapse: collapse; min-width: 1000px; }
th, td { transition: none; }
th {
    background: var(--table-header-bg);
    padding: 15px 12px;
    text-align: right;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}
td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
tr:hover { background: var(--hover-row); }
.checkin-btn {
    background: var(--success);
    border: none;
    border-radius: 30px;
    width: 36px;
    height: 36px;
    color: white;
    cursor: pointer;
    font-size: 1.2rem;
}
.whatsapp-btn { color: var(--whatsapp); font-size: 1.5rem; text-decoration: none; margin-right: 8px; }
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    flex-wrap: wrap;
}
.page-btn {
    padding: 8px 14px;
    border-radius: 30px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    cursor: pointer;
}
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.modal {
    display: none;
    position: fixed;
    top:0; left:0;
    width:100%; height:100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
    z-index: 2000;
}
.modal-content {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 25px;
    width: 500px;
    max-width: 90%;
}
.loader {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid #ccc;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.toast-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    z-index: 3000;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease-out;
}
@keyframes slideDown {
    from { top: -50px; opacity: 0; }
    to { top: 20px; opacity: 1; }
}
@media (max-width: 768px) {
    body { padding: 10px; }
    .stat-value { font-size: 1.5rem; }
}