/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    line-height: 1.6;
    color: #111827;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid #f3f4f6;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

/* Main content */
.main-content {
    padding: 4rem 0;
}

.content-container {
    max-width: 42rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.main-heading {
    font-size: 3rem;
    font-weight: 700;
    color: #111827;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.body-content {
    font-size: 1.125rem;
    color: #6b7280;
    line-height: 1.75;
    margin-bottom: 3rem;
}

.body-content p {
    margin-bottom: 1.5rem;
}

.body-content p:last-child {
    margin-bottom: 0;
}

/* Form styles */
.email-form {
    margin-top: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.email-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1.125rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    background-color: #ffffff;
    transition: all 0.2s ease;
}

.email-input:focus {
    outline: none;
    border-color: #111827;
    box-shadow: 0 0 0 3px rgba(17, 24, 39, 0.1);
}

.submit-button {
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    background-color: #111827;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.submit-button:hover {
    background-color: #1f2937;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Form messages */
.form-message {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    display: block;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
    display: block;
}

/* Responsive design */
@media (max-width: 768px) {
    .main-heading {
        font-size: 2.5rem;
    }
    
    .content-container {
        padding: 0 1rem;
    }
    
    .body-content {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .main-heading {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 2rem 0;
    }
}