body {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    color: #0f172a;
    font-family: 'Noto Sans Thai', 'Segoe UI', Tahoma, sans-serif;
    min-height: 100vh;
}

.main-shell {
    max-width: 1400px;
    margin: 32px auto;
    padding: 0 16px;
}

.topbar {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border: none;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(79, 70, 229, 0.1);
}

.page-title {
    letter-spacing: 0.02em;
    color: #ffffff;
    font-size: 1.5rem;
}

.card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.calendar-wrap {
    min-height: 700px;
}

#calendar {
    width: 100%;
    min-height: 700px;
}

.fc-toolbar-title {
    font-weight: 700;
    color: #0f172a;
    font-size: 1.25rem;
}

.fc-button,
.fc-button-primary {
    background: #4f46e5 !important;
    border-color: #4f46e5 !important;
    color: #ffffff !important;
    min-height: 38px !important;
    padding: 0.55rem 0.85rem !important;
    font-weight: 600 !important;
    border-radius: 10px !important;
    transition: all 0.2s ease !important;
}

.fc-button:hover,
.fc-button-primary:hover,
.fc-button-active {
    background: #4338ca !important;
    border-color: #4338ca !important;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3) !important;
}

.fc-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.fc-toolbar-chunk {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.fc .fc-toolbar-title {
    margin: 0 8px;
    font-size: 1.15rem;
}

.fc-theme-standard td,
.fc-theme-standard th,
.fc-scrollgrid,
.fc-col-header-cell,
.fc-daygrid-day {
    border-color: #e5e7eb !important;
}

.fc-daygrid-day-number,
.fc-col-header-cell-cushion,
.fc-timegrid-axis-cushion,
.fc-event-title,
.fc-event-time {
    color: #0f172a !important;
}

.fc-col-header-cell:nth-child(1) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(2) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(3) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(4) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(5) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(6) {
    background: #eef2ff;
}

.fc-col-header-cell:nth-child(7) {
    background: #eef2ff;
}

.fc-daygrid-day-frame,
.fc-timegrid-slot,
.fc-timegrid-bg,
.fc-timegrid-body,
.fc-scroller {
    background: #ffffff;
}

.fc-event {
    border: none !important;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 3px 6px;
}

.form-label {
    color: #1e293b;
    font-weight: 600;
}

.form-control,
.form-select,
.form-control:focus,
.form-select:focus {
    border-radius: 12px;
    padding: 0.8rem 0.9rem;
    box-shadow: none;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #0f172a;
    transition: all 0.2s ease;
}

.form-control::placeholder {
    color: #94a3b8;
}

.form-control:focus,
.form-select:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn {
    border-radius: 12px;
    padding: 0.7rem 1.2rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #4f46e5;
    border: 1px solid #4f46e5;
    color: #ffffff;
}

.btn-primary:hover {
    background: #4338ca;
    border-color: #4338ca;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-light {
    background: #ffffff;
    color: #0f172a;
    border: 1px solid #e2e8f0;
}

.btn-light:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #0f172a;
}

.btn-outline-secondary {
    color: #64748b;
    border-color: #cbd5e1;
}

.btn-outline-secondary:hover {
    background: #f1f5f9;
    border-color: #94a3b8;
    color: #1e293b;
}

.input-group-text {
    border-radius: 12px 0 0 12px;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: #475569;
    font-weight: 500;
}

.modal-content {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: #0f172a;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.modal-header {
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: #ffffff;
}

.modal-header .modal-title {
    font-weight: 600;
    color: #ffffff;
}

.alert {
    border-radius: 12px;
    border: 1px solid;
    font-weight: 500;
}

.alert-success {
    background: #f0fdf4;
    border-color: #86efac;
    color: #166534;
}

.alert-danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-info {
    background: #f0f9ff;
    border-color: #bae6fd;
    color: #0c4a6e;
}

@media (max-width: 768px) {
    .main-shell {
        padding: 0 8px;
    }

    .topbar {
        border-radius: 12px;
    }

    .calendar-wrap {
        min-height: 560px;
    }

    .fc-toolbar {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .fc-toolbar-chunk {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
        width: 100%;
    }

    .fc .fc-toolbar-title {
        font-size: 1rem;
        width: 100%;
        text-align: center;
    }

    .fc-button,
    .fc-button-primary {
        flex: 1 1 auto;
        min-width: 70px;
    }
}

/* Badge Styling */
.badge {
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}