/* Base styles */
:root {
    --primary-color: #2EB1BC;
    --dark-gray: #333333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    background-color: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: #ffffff;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--dark-gray);
}

/* Form styles */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

select, input[type="date"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    background-color: var(--white);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.button-group {
    display: flex;
    gap: 10px;
}

.style-button {
    flex: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    background-color: var(--white);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.style-button.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

#calculate-button {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

#calculate-button:hover {
    background-color: #259aa5;
}

/* Result styles */
#result {
    margin-top: 30px;
    padding: 25px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    text-align: center;
}

.result-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

#result h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-gray);
}

#follow-up-date {
    color: var(--primary-color);
    font-weight: 700;
}

#result-explanation {
    margin-bottom: 20px;
    font-size: 1rem;
    line-height: 1.6;
}

.cta-button {
    padding: 14px 24px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.cta-button:hover {
    background-color: #259aa5;
}

/* Email template styles */
#email-template {
    margin-top: 30px;
    padding: 25px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
}

#email-template h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.email-container {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
}

.email-header {
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
    margin-bottom: 15px;
}

.email-body {
    white-space: pre-line;
    line-height: 1.6;
}

.secondary-button {
    padding: 10px 20px;
    background-color: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.secondary-button:hover {
    background-color: #f0f9fa;
}

/* Utility classes */
.hidden {
    display: none;
}

/* Responsive styles */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.7rem;
    }
    
    .button-group {
        flex-direction: column;
    }
}