body {
    margin: 0;
    height: 100vh;
    background: #3f4f63;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', sans-serif;
}
.color-picker {
    width: 320px;
    height: 500px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    border-radius: 12px;
    padding: 20px 24px;
    text-align: center;
}

.preview {
    width: 100%;
    height: 120px;
    border-radius: 8px;
    background: #10b981;
    margin-bottom: 16px;
    transition: background 0.2s ease;
    border: 1px solid #e5e7eb;
}

.hex-box {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 16px;
    color: #111827;
    cursor: pointer;
    user-select: none;
    margin-bottom: 14px;
}

.hex-box small {
    color: #6b7280;
    font-size: 12px;
}

input[type="color"] {
    width: 100%;
    height: 50px;
    border: none;
    border-radius: 6px;
    background: none;
    padding: 0;
    cursor: pointer;
}

.tooltip {
    font-size: 12px;
    color: #10b981;
    margin-top: 6px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tooltip.show {
    opacity: 1;
}