/* Calendar day cells */
.cal-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.cal-day:hover:not(.cal-disabled):not(.cal-empty) {
    background: #E6F7F5;
    color: #0D9488;
}

.cal-day.cal-selected {
    background: #0D9488;
    color: white;
}

.cal-day.cal-disabled {
    color: #d1d5db;
    cursor: default;
}

.cal-day.cal-empty {
    cursor: default;
}

.cal-day.cal-today:not(.cal-selected) {
    border: 2px solid #0D9488;
}

/* Slot buttons */
.slot-btn.slot-selected {
    border-color: #0D9488;
    background: #E6F7F5;
    color: #0D9488;
}

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}