:root {
    --bg-color: #f0f2f5;
    --text-color: #1a1a1a;
    --header-shadow: rgba(0, 0, 0, 0.1);
    --container-shadow: rgba(0, 0, 0, 0.05);
    --bg-gradient: radial-gradient(circle at top left, #ffffff, #e0e0e0);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --header-shadow: rgba(0, 0, 0, 0.5);
    --container-shadow: rgba(0, 0, 0, 0.4);
    --bg-gradient: radial-gradient(circle at top left, #2c3e50, #000000);
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-color);
    background-image: var(--bg-gradient);
    margin: 0;
    color: var(--text-color);
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    text-align: center;
    padding: 2rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px 0 var(--container-shadow);
}

h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 0 4px 15px var(--header-shadow);
}

.form-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input, textarea {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #6a11cb;
}

button[type="submit"] {
    padding: 12px;
    border-radius: 8px;
    border: none;
    background: linear-gradient(145deg, #6a11cb, #2575fc);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s ease;
}

button[type="submit"]:hover {
    transform: translateY(-2px);
}

.comments-section {
    margin-top: 4rem;
    padding: 2rem;
    border-top: 1px solid rgba(128, 128, 128, 0.2);
    min-width: 100%;
    text-align: left;
}