@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap');

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



body {
    /* font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; */
    font-family: 'Roboto', 'Arimo',  sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

/* Навигация */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

/* Главная секция */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* Кнопки */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    font-weight: bold;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #229954;
}

/* О нас */
.about {
    background-color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.about-content {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.about-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 2rem;
    border-radius: 8px;
    flex: 0 1 300px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* Возможности */
.features {
    background-color: #ecf0f1;
    padding: 4rem 2rem;
}

.features h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.features h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem 0;
    color: #2c3e50;
}

/* Списки */
.list-container {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.list-column {
    background: white;
    padding: 1.5rem;
    border-radius: 5px;
    flex: 0 1 250px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.list-column h4 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.list-column ul,
.list-column ol {
    margin-left: 1.5rem;
}

.list-column li {
    margin-bottom: 0.5rem;
}

/* Таблица */
.data-table {
    width: 100%;
    max-width: 600px;
    margin: 1.5rem auto;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    overflow: hidden;
}

.data-table thead {
    background-color: #3498db;
    color: white;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.data-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.data-table tbody tr:hover {
    background-color: #ecf0f1;
}

/* Цветовая палитра */
.color-palette {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.color-box {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.color-box:hover {
    transform: scale(1.1);
}

.color-box.primary {
    background-color: #3498db;
}

.color-box.secondary {
    background-color: #2c3e50;
}

.color-box.success {
    background-color: #27ae60;
}

.color-box.warning {
    background-color: #f39c12;
}

.color-box.danger {
    background-color: #e74c3c;
}

/* Форма */
.contact {
    background-color: white;
    padding: 4rem 2rem;
}

.contact h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.form {
    max-width: 500px;
    margin: 0 auto;
    background-color: #f9f9f9;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea,
.form-group select {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.form-group.checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-group.checkbox label {
    margin-bottom: 0;
}

.form .btn {
    margin-right: 1rem;
}

/* Подвал */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .about-content {
        flex-direction: column;
    }

    .list-container {
        flex-direction: column;
    }

    .color-palette {
        gap: 0.5rem;
    }

    .color-box {
        width: 80px;
        height: 80px;
    }
}