:root {
    --primary: #4361ee;
    --secondary: #3a0ca3;
    --accent: #7209b7;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #4cc9f0;
    --warning: #f72585;
    --primary-hover: #5a75f0;
    --secondary-hover: #4b1cb3;
    --accent-hover: #831cc7;
    --success-hover: #66d4f5;
    --warning-hover: #ff3b95;
    --gray: #6c757d;
    --gray-hover: #7d8689;
}

.cs-container {
    width: 100%;
    max-width: 900px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    box-sizing: border-box;
    padding: 20px;
}

.cs-container header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    padding: 20px;
    text-align: center;
    border-radius: 10px 10px 0 0;
}

.cs-container h1 {
    font-size: 24px;
    margin: 0;
}

.cs-container .description {
    font-size: 14px;
    opacity: 0.9;
    margin: 5px 0 0;
}

#cs-calendar {
    padding: 15px;
    background: #ffffff;
    border-radius: 8px;
}

#cs-calendar .fc-toolbar-title {
    color: #000000 !important;
}

.fc {
    color: var(--dark) !important;
    background: #ffffff !important;
    font-size: 14px;
}

.fc-daygrid-day-number {
    color: var(--dark) !important;
    background: transparent !important;
    padding: 8px !important;
}

.fc-col-header-cell {
    color: #ffffff !important;
    background: var(--primary) !important;
    padding: 8px !important;
}

.fc-col-header {
    background: var(--primary) !important;
}

.fc-daygrid-day {
    background: #ffffff !important;
    border: 1px solid #dddddd !important;
    cursor: pointer;
}

.fc-daygrid-day:hover {
    background: #f1f3f5 !important;
}

.fc-day-today {
    background: var(--primary) !important;
    border: 1px solid var(--primary) !important;
}

.fc-day-today .fc-daygrid-day-number {
    color: #ffffff !important;
    background: transparent !important;
}

.fc-event {
    background: var(--secondary) !important;
    border: 1px solid var(--secondary) !important;
    color: #ffffff !important;
    font-size: 12px;
    padding: 2px 5px;
    cursor: pointer;
}

@media (min-width: 601px) {
    .fc-scroller {
        overflow: hidden !important;
    }
    #cs-calendar .fc-daygrid {
        max-height: 600px;
    }
    #cs-calendar {
        max-width: 850px;
    }
}

@media (max-width: 600px) {
    .cs-container {
        height: auto !important;
        min-height: 700px !important;
        max-height: 700px !important;
        overflow: visible !important;
        padding-bottom: 0 !important;
        margin-bottom: 0 !important;
        box-sizing: border-box !important;
    }
    #cs-calendar {
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        overflow: visible !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .fc-scroller,
    .fc-scroller-harness,
    .fc-daygrid,
    .fc-daygrid-body {
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        overflow: visible !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .cs-container,
    .cs-container *,
    #cs-calendar,
    #cs-calendar * {
        max-height: none !important;
        height: auto !important;
        overflow: visible !important;
    }
    .fc-view-harness {
        height: auto !important;
        max-height: none !important;
        overflow: visible !important;
    }
}

.fc-button {
    background: var(--primary) !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: 5px !important;
    padding: 8px 12px !important;
    margin: 0 4px !important;
    transition: background 0.3s, transform 0.2s;
    font-size: 14px !important;
}

.fc-button:hover {
    background: var(--primary-hover) !important;
    color: #ffffff !important;
    transform: translateY(-2px);
}

.fc-button-group .fc-button {
    margin: 0 4px !important;
}

.fc-header-toolbar {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    gap: 4px;
    padding: 10px 0;
}

.fc-toolbar-chunk {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 1 auto;
    gap: 4px;
}

.fc-button .fc-icon {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

.fc-button {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 40px !important;
    font-size: 16px !important;
    font-weight: bold !important;
}

.fc-button .fc-button-content {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

@media (max-width: 600px) {
    .fc-header-toolbar {
        flex-wrap: nowrap;
        justify-content: center;
        gap: 1px;
        padding: 8px 4px;
        margin-left: 0;
        overflow-x: hidden;
    }
    .fc-toolbar-chunk {
        gap: 1px;
        flex: 0 1 auto;
    }
    .fc-button {
        padding: 6px 8px !important;
        font-size: 12px !important;
        margin: 0 1px !important;
    }
    .fc-button-group .fc-button {
        margin: 0 1px !important;
    }
    .fc-toolbar-title {
        font-size: 14px !important;
        margin: 0 1px !important;
        color: #000000 !important;
        height: 24px !important;
        line-height: 24px !important;
    }
}

#cs-booking-modal, #cs-success-modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #ffffff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    width: 90%;
    max-width: 400px;
    box-sizing: border-box;
    animation: fadeIn 0.3s ease-in-out;
}

#cs-booking-modal h3 {
    font-size: 18px !important;
    white-space: nowrap !important;
    color: #000000 !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translate(-50%, -60%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

#cs-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
}

.cs-form-group {
    margin-bottom: 15px;
}

.cs-form-group label {
    display: block;
    font-weight: 500;
    color: var(--dark);
    font-size: 14px;
    margin-bottom: 5px;
}

.cs-form-group input,
.cs-form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #cccccc;
    border-radius: 6px;
    font-size: 14px;
    background: #ffffff;
    color: var(--dark);
    box-sizing: border-box;
}

.cs-timezone-search {
    width: 100%;
    padding: 10px;
    border: 1px solid #cccccc;
    border-radius: 6px;
    font-size: 14px;
    background: #ffffff;
    color: var(--dark);
    box-sizing: border-box;
}

.cs-timezone-search:focus {
    border-color: var(--primary);
    box-shadow: 0 0 5px rgba(67, 97, 238, 0.5);
    outline: none;
}

.ui-autocomplete {
    max-height: 200px;
    overflow-y: auto;
    overflow-x: hidden;
    border: 1px solid #cccccc;
    border-radius: 6px;
    background: #ffffff;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    z-index: 1001;
}

.ui-menu-item {
    padding: 8px 12px;
    font-size: 14px;
    color: var(--dark);
    cursor: pointer;
}

.ui-menu-item:hover {
    background: var(--light);
}

.cs-container button,
.cs-settings-container button {
    padding: 10px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    box-sizing: border-box;
    color: #ffffff !important;
}

.cs-book-btn {
    background: var(--primary);
    padding: 12px 20px;
    color: #ffffff !important;
}

.cs-book-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.cs-close-btn {
    background: var(--gray);
    margin-top: 10px;
    padding: 12px 20px;
    color: #ffffff !important;
}

.cs-close-btn:hover {
    background: var(--gray-hover);
    transform: translateY(-2px);
}

.cs-save-settings-btn {
    background: var(--primary);
}

.cs-save-settings-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.cs-test-email-btn {
    background: var(--accent);
}

.cs-test-email-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.cs-add-time-btn {
    background: var(--success);
}

.cs-add-time-btn:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
}

.cs-remove-time-btn,
.cs-remove-slot-btn,
.cs-delete-booking-btn {
    background: var(--warning);
}

.cs-remove-time-btn:hover,
.cs-remove-slot-btn:hover,
.cs-delete-booking-btn:hover {
    background: var(--warning-hover);
    transform: translateY(-2px);
}

.cs-duplicate-slot-btn {
    background: var(--accent);
}

.cs-duplicate-slot-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

@media (max-width: 600px) {
    .cs-book-btn,
    .cs-close-btn,
    .cs-save-settings-btn,
    .cs-test-email-btn,
    .cs-duplicate-slot-btn,
    .cs-delete-booking-btn {
        padding: 14px 24px;
        font-size: 16px;
        color: #ffffff !important;
    }
}

#cs-booking-message,
.cs-settings-message,
#cs-success-message {
    margin-top: 10px;
    font-size: 14px;
    color: var(--dark);
}

.cs-error {
    color: var(--warning);
    background: #ffeef3;
    padding: 10px;
    border-radius: 5px;
    margin-top: 10px;
    box-sizing: border-box;
}

.cs-settings-container {
    width: 100%;
    max-width: 900px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    box-sizing: border-box;
}

.cs-settings-container h2 {
    font-size: 22px;
    color: var(--dark);
    margin-bottom: 15px;
}

.cs-slot-entry {
    border: 1px solid #dddddd;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    background: var(--light);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.cs-slot-entry label {
    font-size: 14px;
    color: var(--dark);
    margin-right: 10px;
}

.cs-slot-entry input[type="date"],
.cs-slot-entry input[type="time"] {
    flex: 1;
    min-width: 120px;
    max-width: 150px;
    margin-right: 10px;
}

.cs-time-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.cs-time-slot {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cs-add-time-btn,
.cs-remove-time-btn,
.cs-remove-slot-btn,
.cs-duplicate-slot-btn,
.cs-delete-booking-btn {
    padding: 8px 12px;
    font-size: 14px;
    margin: 0;
    flex-shrink: 0;
}

.cs-slot-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cs-bookings-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.cs-bookings-table th,
.cs-bookings-table td {
    border: 1px solid #dddddd;
    padding: 10px;
    text-align: left;
}

.cs-bookings-table th {
    background: var(--primary);
    color: #ffffff;
}

.cs-notification-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-end;
    margin-bottom: 15px;
}

.cs-notification-group .cs-form-group {
    flex: 1;
    min-width: 200px;
    margin-bottom: 0;
}

.cs-button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cs-save-settings-btn {
    flex: 1;
    min-width: 150px;
}

.cs-test-email-btn {
    flex: 1;
    min-width: 150px;
}

@media (max-width: 600px) {
    .cs-container,
    .cs-settings-container {
        margin: 10px;
        padding: 15px;
    }

    .cs-container h1,
    .cs-settings-container h2 {
        font-size: 20px;
    }

    .cs-slot-entry {
        flex-direction: column;
        align-items: flex-start;
    }

    .cs-slot-entry input[type="date"],
    .cs-slot-entry input[type="time"] {
        max-width: 100%;
        margin-bottom: 10px;
    }

    .fc-daygrid-day-number,
    .fc-col-header-cell {
        font-size: 12px !important;
        padding: 6px !important;
    }

    .fc-daygrid-day {
        height: auto !important;
    }

    #cs-booking-modal, #cs-success-modal {
        width: 95%;
        padding: 15px;
    }

    .cs-bookings-table {
        font-size: 12px;
    }

    .cs-notification-group {
        flex-direction: column;
        align-items: stretch;
    }

    .cs-button-group {
        flex-direction: column;
        gap: 10px;
    }

    .cs-slot-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}