/* ===========================
   Современные CSS анимации
   =========================== */

/* Hover эффекты для кнопок */
.btn, .btn-primary, .btn-secondary, .btn-success {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* Ripple effect при клике */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Hover для карточек услуг */
.service-card, .social-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover, .social-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

/* Fade-in анимация для элементов при прокрутке */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Анимация для language switcher */
.lang-link {
    position: relative;
    transition: all 0.2s ease;
}

.lang-link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff6300;
    transition: width 0.3s ease;
}

.lang-link:hover::after,
.lang-link.active::after {
    width: 100%;
}

.lang-link:hover {
    transform: scale(1.1);
}

/* Pulse анимация для важных элементов */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 99, 0, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(255, 99, 0, 0);
    }
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* Slide-in анимация для модальных окон */
@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal.fade .modal-dialog {
    animation: slideInUp 0.3s ease-out;
}

/* Shimmer эффект для загрузки */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #f8f8f8 50%,
        #f0f0f0 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}