:root {
    --color-bg-primary: #F9FAFB;
    --color-bg-secondary: #FFFFFF;
    --color-text-primary: #1F2937;
    --color-text-secondary: #6B7280;
    --color-border: #D1D5DB;
    --color-accent-primary: #7C3AED;
    --color-accent-hover: #6D28D9;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.form-container {
    background-color: var(--color-bg-secondary);
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    max-width: 448px;
    width: 100%;
}

#userInput {
    background-color: var(--color-bg-secondary);
    width: 100%;
    padding: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 16px;
    color: var(--color-text-primary);
    outline: none;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

#userInput:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

#userInput::placeholder {
    color: var(--color-text-secondary);
}

#btn {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--color-accent-primary);
    color: #FFFFFF;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

#btn:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 10px -1px rgba(0, 0, 0, 0.15), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
}

#btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.5);
}

#resetbtn {
    margin-top: 16px;
    padding: 8px 16px;
    background-color: #E5E7EB;
    color: var(--color-text-primary);
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    align-self: flex-start;
}

#resetbtn:hover {
    background-color: #D1D5DB;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.08);
}

#resetbtn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(156, 163, 175, 0.5);
}