:root {
    --background-color: #f4f7f6;
    --card-background: #ffffff;
    --text-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --accent-color: #2563eb;
    --input-border: #d1d5db;
    --input-focus: #2563eb;
}

body {
    margin: 0;
    padding: 2rem 1rem;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
}

.form-container {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    width: 100%;
    max-width: 500px;
}

h1 {
    margin-top: 0;
    font-size: 1.875rem;
    font-weight: 700;
    color: #111827;
}

p {
    color: #6b7280;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #374151;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea {
    resize: vertical;
}

.submit-button {
    width: 100%;
    padding: 0.875rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 1rem;
}

.submit-button:hover {
    background-color: #1d4ed8;
}

.comments-container {
    width: 100%;
    max-width: 500px;
    margin-top: 3rem;
    padding: 2.5rem;
    background: var(--card-background);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    box-sizing: border-box;
}

@media (max-width: 480px) {
    .form-container, .comments-container {
        padding: 1.5rem;
    }
}