/* Мобильные стили */
@media (max-width: 991.98px) {
    /* Навигация */
    .navbar {
        padding: 1rem;
    }

    .navbar-collapse {
        background: var(--surface);
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        padding: 1.5rem;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    }

    .navbar-collapse.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .navbar-nav {
        gap: 0.75rem;
    }

    .nav-item {
        width: 100%;
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.3s ease;
    }

    .navbar-collapse.show .nav-item {
        opacity: 1;
        transform: translateY(0);
    }

    .nav-item:nth-child(1) { transition-delay: 0.1s; }
    .nav-item:nth-child(2) { transition-delay: 0.2s; }
    .nav-item:nth-child(3) { transition-delay: 0.3s; }
    .nav-item:nth-child(4) { transition-delay: 0.4s; }
    .nav-item:nth-child(5) { transition-delay: 0.5s; }

    .nav-button,
    .nav-button-primary {
        width: 100%;
        justify-content: center;
        padding: 1rem;
    }

    /* Бургер меню */
    .navbar-toggler {
        width: 44px;
        height: 44px;
        padding: 0;
        border: none;
        background: var(--surface);
        border-radius: 12px;
        position: relative;
        border: 1px solid var(--border);
        overflow: hidden;
    }

    .navbar-toggler::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(45deg, var(--primary), var(--accent));
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .navbar-toggler:hover::before {
        opacity: 0.1;
    }

    .burger-icon {
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 6px;
        position: relative;
        z-index: 1;
    }

    .burger-icon span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text);
        transition: all 0.3s ease;
        transform-origin: center;
    }

    .navbar-toggler.active .burger-icon span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

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

    .navbar-toggler.active .burger-icon span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Hero секция */
    .hero-section {
        padding: 8rem 0 4rem;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.25rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-features {
        justify-content: center;
        padding: 0 1rem;
    }

    /* Секции */
    .section-header {
        padding: 0 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    /* Карточки тарифов */
    .pricing-section .row {
        margin: 0;
        padding: 0 1rem;
    }

    .pricing-section .col-md-4 {
        padding: 0.75rem;
        width: 100%;
    }

    .pricing-card {
        margin: 0;
        height: auto;
        position: relative;
        background: var(--surface);
        border: 1px solid var(--border);
        padding: 2rem 1.5rem;
    }

    .pricing-card.featured {
        transform: none;
        margin: 1rem 0;
        border-color: var(--primary);
    }

    .pricing-header {
        margin-bottom: 1.5rem;
    }

    .pricing-icon {
        margin-bottom: 1rem;
    }

    .price {
        margin: 1.5rem 0;
    }

    .pricing-features {
        margin-bottom: 1.5rem;
    }

    .pricing-features li {
        margin-bottom: 0.75rem;
    }

    .pricing-card .btn {
        width: 100%;
        padding: 1rem;
        margin-top: 1rem;
    }

    /* Другие карточки */
    .feature-card,
    .support-card {
        margin-bottom: 1.5rem;
        height: auto;
    }

    /* Модальные окна */
    .modal-container {
        margin: 1rem;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-header {
        padding: 1.5rem;
    }

    .modal-body {
        padding: 1.5rem;
    }

    /* Уведомления */
    .notification {
        left: 1rem;
        right: 1rem;
        transform: translateY(-100%);
    }

    .notification.show {
        transform: translateY(0);
    }
}

/* Дополнительные стили для маленьких экранов */
@media (max-width: 575.98px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .feature-icon,
    .pricing-icon,
    .support-icon {
        width: 50px;
        height: 50px;
    }

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

    .footer {
        padding: 3rem 1rem 2rem;
    }

    .footer-links,
    .footer-contacts {
        text-align: center;
    }

    .footer-links a,
    .footer-contacts li {
        justify-content: center;
    }
}

/* Стили для состояния открытого меню */
body.menu-open {
    overflow: hidden;
}

/* Анимации для мобильного меню */
@keyframes menuFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.navbar-collapse.show .nav-item {
    animation: menuFadeIn 0.3s ease forwards;
}