:root {
    --primary: #2fc6f6;
    --primary-dark: #1baedb;
    --dark: #2c3e50;
    --light: #f8f9fa;
    --text: #333;
    --white: #ffffff;
    --footer-bg: #3a3b4e;
    --link-purple-light: #bca0ff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

/* --- Навигация (Header) --- */
.navbar {
    background: var(--dark);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--primary); }

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.8rem;
    cursor: pointer;
}

/* --- Главный экран (Hero) --- */
.hero {
    background: var(--dark);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
    border-bottom: 5px solid var(--primary);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
    overflow-wrap: break-word; /* Экстренный перенос длинных слов */
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 40px auto;
    opacity: 0.9;
}

.hero .btn {
    font-size: 1.2rem;
    padding: 15px 40px;
}

/* --- Секции контента --- */
.section { padding: 60px 0; }
.section-light { background: var(--white); }
.section-gray { background: var(--light); }
.section-primary { background: var(--primary); color: var(--white); text-align: center; }

.section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--dark);
    text-align: center;
}
.section-primary .section-title { color: var(--white); margin-bottom: 20px; }

/* --- Сетки и Карточки --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

.card h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

/* --- Кнопки --- */
.btn {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 10px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}
.btn:hover:not(:disabled) { background: var(--primary-dark); }
.btn:disabled { background: #95a5a6; cursor: not-allowed; opacity: 0.8; }
.btn-dark { background: var(--dark); }
.btn-dark:hover { background: #1a252f; }

/* --- Модальные окна (Форма и Документы) --- */
.modal-overlay {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.7);
}

.modal-container {
    background-color: var(--dark);
    margin: 5vh auto;
    padding: 25px;
    width: 95%;
    max-width: 500px; 
    max-height: 90vh;
    overflow-y: auto; 
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    color: var(--white);
}

.modal-container.iframe-mode {
    background-color: #fff;
    max-width: 900px;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    line-height: 1;
}
.modal-close:hover { color: var(--white); }
.iframe-mode .modal-close { color: #666; }
.iframe-mode .modal-close:hover { color: #000; }

.modal-iframe {
    width: 100%;
    flex-grow: 1;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-height: 70vh;
}

/* --- Форма внутри модалки --- */
.modal-form-content h2 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input[type="text"], input[type="tel"] {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    width: 100%;
}
input:invalid:focus { border-color: #e74c3c; outline: none; }

.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    text-align: left;
    font-size: 0.95rem;
    color: #e0e6ed;
    gap: 10px;
    line-height: 1.4;
}
.checkbox-wrapper input {
    width: 18px; height: 18px; margin-top: 2px; cursor: pointer; flex-shrink: 0;
}
.checkbox-wrapper a {
    color: var(--link-purple-light);
    text-decoration: none;
    font-weight: 600;
}
.checkbox-wrapper a:hover { text-decoration: underline; }

/* --- Подвал --- */
main { flex: 1; }
footer {
    background-color: var(--footer-bg);
    color: #ffffff;
    padding: 40px 0;
    font-size: 0.95rem;
    margin-top: auto;
}
.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
footer a { color: #ffffff; text-decoration: none; transition: opacity 0.3s; }
footer a:hover { opacity: 0.8; text-decoration: underline; }
.footer-right a { display: block; margin-bottom: 5px; cursor: pointer; text-align: right; }

/* --- Мобильная адаптивность --- */
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0;
        width: 100%;
        background: var(--dark);
        padding: 20px 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.2);
    }
    .nav-links.active { display: flex; }
    
    /* Адаптация главного экрана (Hero) */
    .hero { padding: 40px 15px; }
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 1rem; margin-bottom: 30px; }
    .hero .btn { font-size: 1.1rem; padding: 12px 30px; }
    
    .section { padding: 40px 0; }
    .section-title { font-size: 1.6rem; margin-bottom: 25px; }
    
    .footer-container { flex-direction: column; text-align: center; gap: 20px; }
    .footer-right a { text-align: center; }
}