/* 디지털 시계 프라이버시 스크린 */
#flip-clock-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #424448 0%, #324466 50%, #acb6c4 100%);
    z-index: 999999;
    display: none;
    justify-content: center;
    align-items: center;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    animation: fadeIn 0.3s ease-in-out;
}

#flip-clock-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.flip-clock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.flip-clock-date {
    color: rgba(255, 255, 255, 0.9);
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 3px;
    text-align: center;
    margin-bottom: 20px;
}

.flip-clock-time {
    display: flex;
    gap: 20px;
    align-items: center;
}

.flip-clock-ampm {
    color: rgba(255, 255, 255, 0.9);
    font-size: 100px;
    font-weight: 500;
    margin-left: 20px;
    line-height: 1;
    font-family: 'Helvetica Neue', 'Arial', sans-serif;
    user-select: none;
    align-self: flex-end;
}

.flip-clock-separator {
    color: rgba(255, 255, 255, 0.9);
    font-size: 180px;
    font-weight: 500;
    line-height: 1;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0.3;
    }
}

.flip-clock-digit-group {
    display: flex;
    gap: 5px;
}

.flip-clock-number {
    font-size: 200px;
    font-weight: 500;
    color: #ffffff;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    user-select: none;
    line-height: 1;
    font-family: 'Helvetica Neue', 'Arial', sans-serif;
    display: inline-block;
}

.flip-clock-hint {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    font-weight: 300;
    text-align: center;
    margin-top: 40px;
    letter-spacing: 1px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* 반응형 디자인 */
@media (max-width: 1200px) {
    .flip-clock-number {
        font-size: 150px;
    }

    .flip-clock-separator {
        font-size: 130px;
    }

    .flip-clock-ampm {
        font-size: 75px;
        margin-left: 15px;
    }
}

@media (max-width: 768px) {
    .flip-clock-number {
        font-size: 100px;
    }

    .flip-clock-separator {
        font-size: 90px;
    }

    .flip-clock-date {
        font-size: 22px;
    }

    .flip-clock-time {
        gap: 10px;
    }

    .flip-clock-digit-group {
        gap: 3px;
    }

    .flip-clock-ampm {
        font-size: 50px;
        margin-left: 10px;
    }
}

@media (max-width: 480px) {
    .flip-clock-number {
        font-size: 70px;
    }

    .flip-clock-separator {
        font-size: 60px;
    }

    .flip-clock-date {
        font-size: 18px;
    }

    .flip-clock-digit-group {
        gap: 2px;
    }

    .flip-clock-ampm {
        font-size: 35px;
        margin-left: 5px;
    }
}