/* Базовые стили */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: #0f172a;
    color: #e2e8f0;
    line-height: 1.6;
}

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

section {
    padding: 80px 0;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #fff;
}

/* Навигация */
header {
    background-color: #1e293b;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #38bdf8;
}

nav a {
    color: #94a3b8;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.3s;
}

nav a:hover {
    color: #fff;
}

.btn-nav {
    background-color: #38bdf8;
    color: #0f172a;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
}

.btn-nav:hover {
    background-color: #7dd3fc;
}

/* Главный экран */
.hero {
    padding-top: 150px;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    text-align: center;
}

.hero-container h1 {
    font-size: 3.5rem;
    color: #fff;
    margin-bottom: 20px;
}

.hero-container p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto 40px;
}

.btn-main {
    display: inline-block;
    background-color: #38bdf8;
    color: #0f172a;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn-main:hover {
    background-color: #7dd3fc;
}

/* Сетка карточек услуг */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: #1e293b;
    padding: 40px 30px;
    border-radius: 12px;
    border: 1px solid #334155;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 15px;
    color: #fff;
}

/* Преимущества */
.advantages {
    background-color: #1e293b;
}

.adv-item {
    background-color: #0f172a;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #38bdf8;
    font-size: 1.1rem;
}

/* Форма контактов */
.contact-container {
    max-width: 600px;
    text-align: center;
}

.contact-container p {
    margin-bottom: 30px;
    color: #94a3b8;
}

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

input, textarea {
    width: 100%;
    padding: 14px;
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 6px;
    color: #fff;
    font-size: 1rem;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #38bdf8;
}

.status-msg {
    margin-top: 20px;
    font-weight: bold;
}

/* Подвал */
footer {
    background-color: #0f172a;
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid #1e293b;
    color: #64748b;
    font-size: 0.9rem;
}

/* Адаптивность для мобильных */
@media (max-width: 768px) {
    .hero-container h1 { font-size: 2.2rem; }
    nav { display: none; } /* Для полноценного мобильного меню нужен бургер */
    section { padding: 50px 0; }
}