/* UTC Date Picker Styles - Bootstrap Theme */
.utc-date-picker {
    position: relative;
    display: inline-block;
    width: 100%;
}

.utc-date-picker .input-group {
    width: 100%;
}

.utc-date-picker .form-control.invalid-date {
    border-color: #d9534f;
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
}

.utc-date-picker .form-control.invalid-date:focus {
    border-color: #d43f3a;
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px rgba(217,83,79,.6);
}

.utc-calendar-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1050;
    background: white;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
    padding: 4px;
    margin-top: 2px;
    width: 280px;
}

.utc-calendar-dropdown .calendar-header {
    padding: 5px 0;
    margin-bottom: 5px;
    position: relative;
    height: 30px;
}

.utc-calendar-dropdown .calendar-header .btn-link {
    padding: 0 8px;
    color: #333;
    text-decoration: none;
}

.utc-calendar-dropdown .calendar-header .btn-link:hover {
    color: #23527c;
}

.utc-calendar-dropdown .calendar-header strong {
    font-size: 14px;
    line-height: 30px;
}

.utc-calendar-dropdown .calendar-header .calendar-selectors {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.utc-calendar-dropdown .calendar-header .month-selector,
.utc-calendar-dropdown .calendar-header .year-selector {
    padding: 2px 4px;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-size: 13px;
    font-weight: 600;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.utc-calendar-dropdown .calendar-header .month-selector {
    min-width: 110px;
}

.utc-calendar-dropdown .calendar-header .year-selector {
    min-width: 70px;
}

.utc-calendar-dropdown .calendar-header .month-selector:hover,
.utc-calendar-dropdown .calendar-header .year-selector:hover {
    border-color: #23527c;
}

.utc-calendar-dropdown .calendar-header .month-selector:focus,
.utc-calendar-dropdown .calendar-header .year-selector:focus {
    outline: none;
    border-color: #5bc0de;
    box-shadow: 0 0 4px rgba(91, 192, 222, 0.5);
}

.utc-calendar-dropdown .calendar-table {
    width: 100%;
    margin: 0;
    border-collapse: separate;
    border-spacing: 2px;
}

.utc-calendar-dropdown .calendar-table th {
    text-align: center;
    font-weight: normal;
    font-size: 12px;
    color: #999;
    padding: 4px;
    width: 14.2857%;
}

.utc-calendar-dropdown .calendar-table td {
    text-align: center;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 13px;
    background: white;
    color: #333;
    transition: all 0.2s ease;
}

.utc-calendar-dropdown .calendar-table td:hover:not(.disabled) {
    background-color: #eee;
}

.utc-calendar-dropdown .calendar-table td.other-month {
    color: #999;
    background: transparent;
}

.utc-calendar-dropdown .calendar-table td.selected {
    background-color: #5bc0de;
    color: white;
}

.utc-calendar-dropdown .calendar-table td.selected:hover {
    background-color: #46b8da;
}

.utc-calendar-dropdown .calendar-table td.today {
    background-color: #fcf8e3;
    font-weight: bold;
}

.utc-calendar-dropdown .calendar-table td.today.selected {
    background-color: #5bc0de;
}

.utc-calendar-dropdown .calendar-table td.disabled {
    color: #ccc;
    cursor: not-allowed;
    background-color: #f5f5f5;
}

.utc-calendar-dropdown .calendar-table td.disabled:hover {
    background-color: #f5f5f5;
}

.utc-calendar-dropdown .calendar-footer {
    padding: 5px;
    margin-top: 5px;
    border-top: 1px solid #eee;
}

.utc-calendar-dropdown .calendar-footer .btn {
    margin-right: 5px;
}

.utc-calendar-dropdown .calendar-footer .btn.pull-right {
    margin-right: 0;
    margin-left: 5px;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .utc-calendar-dropdown {
        width: 260px;
    }
    
    .utc-calendar-dropdown .calendar-table td {
        padding: 4px 6px;
        font-size: 12px;
    }
}

/* Dark theme support (optional) */
@media (prefers-color-scheme: dark) {
    .utc-calendar-dropdown {
        background: #2b2b2b;
        border-color: #444;
    }

    .utc-calendar-dropdown .calendar-table td {
        background: #2b2b2b;
        color: #e0e0e0;
    }

    .utc-calendar-dropdown .calendar-table td:hover:not(.disabled) {
        background-color: #3a3a3a;
    }

    .utc-calendar-dropdown .calendar-table td.other-month {
        color: #666;
    }

    .utc-calendar-dropdown .calendar-table td.disabled {
        background-color: #1a1a1a;
        color: #555;
    }

    .utc-calendar-dropdown .calendar-header .btn-link {
        color: #e0e0e0;
    }

    .utc-calendar-dropdown .calendar-footer {
        border-top-color: #444;
    }

    .utc-calendar-dropdown .calendar-header .month-selector,
    .utc-calendar-dropdown .calendar-header .year-selector {
        background: #2b2b2b;
        color: #e0e0e0;
        border-color: #444;
    }

    .utc-calendar-dropdown .calendar-header .month-selector:hover,
    .utc-calendar-dropdown .calendar-header .year-selector:hover {
        border-color: #5bc0de;
    }
}