.calendar {
        background: #333;
        padding: 20px;
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        max-width: 360px;
        width: 90%;
        margin: 0 auto;
    }

    .header {
        display: flex;
        justify-content: space-between;
        margin-bottom: 10px;
        align-items: center;
    }

    .header button {
        border: none;
        background: #e5e7eb;
        padding: 6px 10px;
        border-radius: 6px;
        cursor: pointer;
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 4px;
    }

    .dow {
        text-align: center;
        font-size: 12px;
        color: #6b7280;
    }

    .day {
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 6px;
        background: #f9fafb;
        font-size: 14px;
    }

    .busy {
        background: #fecaca !important;
        color: #7f1d1d;
        font-weight: 600;
    }

    .free {
        background: #dcfce7 !important;
        color: #065f46;
        font-weight: 600;
    }

    .outside {
        opacity: 0.3;
    }