body {
    margin: 0;
    padding: 20px;
    background-color: #f5f5f7;
    color: #1d1d1f;
    font-family: "Geist", -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.container {
    position: relative;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8vh;
    margin-bottom: 15vh;
}

.logo {
    width: 120px;
    height: 120px;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    -webkit-user-drag: none;
}

.timer {
    display: flex;
    gap: 40px;
}

.time-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.time-unit span:first-child {
    font-size: 6rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
    color: #727272;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.05));
}

.label {
    font-size: 0.75rem;
    margin-top: 15px;
    letter-spacing: 0.15em;
    font-weight: 500;
    color: #86868b;
    text-transform: uppercase;
}

.ai-container {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 35px;
    width: 88vw;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.ai-container.visible {
    opacity: 1;
}

.ai-label {
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    font-weight: 600;
    color: #86868b;
    text-transform: uppercase;
    background: rgba(0, 0, 0, 0.04);
    padding: 6px 10px;
    border-radius: 6px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.ai-brand {
    font-weight: 600;
    color: inherit;
}

.ai-response {
    font-size: 0.9rem;
    color: #727272;
    line-height: 1.5;
    font-weight: 400;
    text-align: center;
    letter-spacing: -0.01em;
}

.ai-response p {
    margin: 0;
}

.loading-message {
    font-style: italic;
    background: linear-gradient(to right, #727272 0%, #d1d1d6 50%, #727272 100%);
    background-size: 200% auto;
    color: #727272;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
    to {
        background-position: -200% center;
    }
}

@media (max-width: 768px) {
    .container {
        gap: 40px;
    }
    
    .timer {
        gap: 30px;
    }
    
    .time-unit span:first-child {
        font-size: 3rem;
    }

    .ai-container {
        margin-top: 25px;
        width: 90vw;
    }

    .ai-response {
        font-size: 0.85rem;
        line-height: 1.45;
    }
}

@media (max-width: 480px) {
    .logo {
        width: 60px;
        height: 60px;
    }

    .timer {
        gap: 15px;
    }
    
    .time-unit span:first-child {
        font-size: 2rem;
    }
    
    .label {
        font-size: 0.6rem;
    }
}

@media (max-width: 350px) {
    .time-unit {
        padding: 0 5px;
    }
    
    .time-unit span:first-child {
        font-size: 1.5rem;
    }
    
    .label {
        font-size: 0.5rem;
    }
}