* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        height: 100dvh;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .color-container {
        flex: 1;
        display: flex;
        flex-direction: column;
        transition: all 0.3s ease;
    }

    .color-section {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        transition: background-color 0.5s ease;
    }

    .color-label {
        position: absolute;
        left: 20px;
        top: 20px;
        background: rgba(0, 0, 0, 0.7);
        color: white;
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 3dvw;
        font-weight: 600;
        letter-spacing: 0.5px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }

    .color-label.great {
        background: rgba(34, 197, 94, 0.9);
    }

    .color-label.good {
        background: rgba(54, 69, 79, 0.9);
    }

    .color-label.bad {
        background: rgba(239, 68, 68, 0.9);
    }

    .color-info {
        background: rgba(255, 255, 255, 0.6);
        backdrop-filter: blur(10px);
        padding: 16px 20px;
        border-radius: 15px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        text-align: center;
    }

    .color-name {
        font-size: 3dvw;
        font-weight: 600;
        color: #333;
        text-transform: uppercase;
        /* margin-bottom: 8px; */
    }

    .color-hex {
        font-size: 1rem;
        color: #666;
        font-family: 'Courier New', monospace;
        letter-spacing: 1px;
    }

    .info-panel {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        padding: 20px;
        text-align: center;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 20px;
    }

    .date-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }


    .date-info {
        font-size: 3dvw;
        opacity: 0.9;
    }

    .date-info-container {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .date-display {
        font-size: 4.5dvw;
        font-weight: 700;
        margin-top: 8px;
        margin-bottom: 8px;
    }

    .element-info {
        font-size: 3dvw;
        opacity: 0.9;
    }

    .refresh-button {
        background: transparent;
        border: none;
        color: white;
        width: 4dvw;
        height: 4dvw;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
        opacity: 0.9;
    }

    .refresh-button:hover {
        opacity: 1;
        transform: rotate(180deg);
    }

    .refresh-button:active {
        transform: rotate(360deg);
    }

    .refresh-icon {
        width: 4dvw;
        height: 4dvw;
    }


    .nav-button {
        position: absolute;
        background: rgba(255, 255, 255, 0.2);
        border: 2px solid rgba(255, 255, 255, 0.3);
        color: white;
        width: 45px;
        height: 45px;
        border-radius: 50%;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

    .nav-button.prev {
        left: 20px;
    }

    .nav-button.next {
        right: 20px;
    }

    .nav-button:hover {
        background: rgba(255, 255, 255, 0.3);
        transform: scale(1.1);
    }

    .nav-button:active {
        transform: scale(0.95);
    }

    .arrow-icon {
        width: 20px;
        height: 20px;
    }

    @media (min-width: 768px) {
        .color-container {
            flex-direction: row;
        }
    }

    .install-prompt {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        background: white;
        padding: 15px 25px;
        border-radius: 10px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        display: none;
        z-index: 1000;
    }

    .install-prompt button {
        background: #667eea;
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 1rem;
        margin-left: 10px;
    }

    .install-prompt button:hover {
        background: #5568d3;
    }