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

:root {
    --bg-primary: #f5f5f5;
    --bg-secondary: white;
    --text-primary: #333;
    --text-secondary: #555;
    --text-heading: #222;
    --border-color: #ddd;
    --border-light: #eee;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --shadow: rgba(0, 0, 0, 0.1);
    --error-bg: #f8d7da;
    --error-text: #721c24;
    --error-border: #f5c6cb;
    --success-bg: #d4edda;
    --success-text: #155724;
    --success-border: #c3e6cb;
    --info-bg: #f0f0f0;
    --info-border: #e0e0e0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --text-primary: #e0e0e0;
        --text-secondary: #b0b0b0;
        --text-heading: #f0f0f0;
        --border-color: #444;
        --border-light: #333;
        --accent-color: #4a9eff;
        --accent-hover: #3a8eef;
        --shadow: rgba(0, 0, 0, 0.3);
        --error-bg: #4a1f1f;
        --error-text: #ffb3ba;
        --error-border: #6a2f2f;
        --success-bg: #1f3a1f;
        --success-text: #b3ffb3;
        --success-border: #2f4a2f;
        --info-bg: #3a3a3a;
        --info-border: #4a4a4a;
    }
}

.info-box {
    margin-top: 2em;
    padding: 1em;
    background-color: var(--info-bg);
    border: 1px solid var(--info-border);
    border-radius: 4px;
}

.info-box p {
    text-align: left;
}

.info-box form {
    margin-top: 1em;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow);
}

h1 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-heading);
    text-align: center;
}

h2 {
    font-size: 22px;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--text-heading);
    text-align: center;
}

p {
    margin-bottom: 15px;
    text-align: center;
}

.subscribe-form,
.manage-form,
.unsubscribe-section form {
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
    text-align: center;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="email"],
input[type="text"] {
    width: 100%;
    max-width: 400px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    text-align: center;
}

input[type="email"]:focus,
input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-color);
}

.checkbox label {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: normal;
}

.checkbox input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

.error {
    background-color: var(--error-bg);
    color: var(--error-text);
    padding: 12px;
    border-radius: 4px;
    border: 1px solid var(--error-border);
    margin-bottom: 20px;
}

.success {
    background-color: var(--success-bg);
    color: var(--success-text);
    padding: 12px;
    border-radius: 4px;
    border: 1px solid var(--success-border);
    margin-bottom: 20px;
    text-align: left;
}

.manage-link {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.manage-link a {
    color: var(--accent-color);
    text-decoration: none;
}

.manage-link a:hover {
    text-decoration: underline;
}

.unsubscribe-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--border-light);
}

.success-message {
    text-align: center;
}

.success-message h1 {
    margin-bottom: 20px;
}

.success-message p {
    font-size: 18px;
    margin-bottom: 30px;
}

.content {
    text-align: center;
    padding: 40px 0;
}

.content p {
    font-size: 18px;
}

.cf-turnstile {
    margin: 10px 0;
}

@media (max-width: 640px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }
}