:root {
    --primary-color: #002366; /* آبی کاربنی */
    --secondary-color: #FF7F00; /* نارنجی */
    --accent-color: #004080; /* سایه آبی */
    --background-color: #F4F4F4;
    --white-color: #FFFFFF;
    --text-color: #333333;
    --light-gray-color: #DDDDDD;
    --font-family: 'Vazirmatn', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--white-color);
    color: var(--text-color);
    line-height: 1.6;
    direction: rtl;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
}

header p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background-color: var(--background-color);
    padding: 3rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.hero .subtitle {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 2rem;
}

.hero img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white-color);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
    background-color: #e67300;
    transform: translateY(-3px);
}

/* Details Section */
.details {
    padding: 4rem 0;
}

.details h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--white-color);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-top: 5px solid var(--secondary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-card h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card ul {
    list-style: none;
    padding-right: 0;
}

.feature-card ul li {
    margin-bottom: 0.8rem;
    padding-right: 1.5rem;
    position: relative;
}

.feature-card ul li::before {
    content: '✔';
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    right: 0;
    top: 1px;
}

/* Investment Plan Section */
.investment-plan {
    background-color: var(--background-color);
    padding: 4rem 0;
}

.investment-plan h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.plan-box {
    background-color: var(--white-color);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--light-gray-color);
}

.plan-box p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.costs {
    margin-bottom: 2rem;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--light-gray-color);
}

.cost-item:last-child {
    border-bottom: none;
}

.cost-title {
    font-weight: 500;
    color: var(--text-color);
}

.cost-value {
    font-weight: 700;
    color: var(--primary-color);
}

.note {
    background-color: #fffbe6;
    border-right: 5px solid var(--secondary-color);
    padding: 1rem;
    border-radius: 5px;
    font-size: 0.95rem;
}

/* Registration Form Section */
.registration-form {
    padding: 4rem 0;
}

.registration-form h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.registration-form > .container > p {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem auto;
    color: #555;
}

#registration-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white-color);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--light-gray-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.checkbox-group input[type="checkbox"] {
    flex-shrink: 0;
    margin-left: 10px;
    margin-top: 5px;
    width: 18px;
    height: 18px;
}

.checkbox-group label {
    font-size: 0.9rem;
    cursor: pointer;
}

.submit-button {
    width: 100%;
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 15px;
    border: none;
    border-radius: 5px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-button:hover {
    background-color: var(--accent-color);
}

#form-message {
    text-align: center;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-weight: 500;
    display: none; /* Initially hidden */
}

#form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

#form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}


/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white-color);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

footer p {
    margin: 0;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .cost-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .cost-value {
        margin-top: 0.5rem;
    }
}