/**
 * СТИЛИ КОМПОНЕНТОВ
 * Переиспользуемые компоненты: header, footer, buttons, features, modal
 */

/* ========================================
   HEADER И НАВИГАЦИЯ
======================================== */
.header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.header-contact {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.contact-item a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.contact-item a:hover {
    opacity: 0.8;
}

.nav-menu {
    width: 100%;
    margin-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-list a {
 /**   color: white; */
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: width 0.3s;
}

.nav-list a:hover::after {
    width: 100%;
}

/* ========================================
   БУРГЕР-МЕНЮ ДЛЯ МОБИЛЬНЫХ
======================================== */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    position: relative;
}

.burger-menu span {
    display: block;
    width: 28px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.burger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
}

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   ПРЕИМУЩЕСТВА (GRID)
======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    gap: 2.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    border-left: 4px solid var(--primary-blue);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-blue), #3b82f6);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    margin-bottom: 1rem;
}

.feature-card p {
    font-size: 0.95rem;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   МОДАЛЬНОЕ ОКНО
======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex !important;
}

.modal-content {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    border-radius: 20px;
    max-width: 400px;
    width: 90%;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    position: relative;
}

.modal-header {
    margin-bottom: 2rem;
}

.modal-header h3 {
    margin: 0 0 1rem 0;
    color: white;
    font-size: 1.75rem;
    font-weight: 700;
}

.modal-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    color: white;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    transition: box-shadow 0.3s;
}

.form-group input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.form-group input::placeholder {
    color: #9ca3af;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: #f97316;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
}

.btn-submit:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.diploma-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   АДАПТИВНОСТЬ КОМПОНЕНТОВ
======================================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

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

    .burger-menu {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--primary-blue-dark);
        padding: 5rem 2rem 2rem;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        z-index: 1000;
        overflow-y: auto;
    }

    .nav-menu.active {
        right: 0;
    }

    .modal-content {
        padding: 2rem;
        max-width: 95%;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}