/* ============================================
   Beijing Longweitengda Property Management Co., Ltd.
   Animations and Effects Stylesheet
   ============================================ */

/* Fade In Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Scale Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Rotate Animations */
@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg);
    }
    to {
        opacity: 1;
        transform: rotate(0deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Slide Animations */
@keyframes slideInFromLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

/* Gradient Animations */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 102, 204, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 102, 204, 0.6);
    }
}

/* Text Reveal Animation */
@keyframes textReveal {
    from {
        clip-path: inset(0 100% 0 0);
    }
    to {
        clip-path: inset(0 0 0 0);
    }
}

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

/* Counter Animation */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Wave Animation for SVG */
@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(20deg);
    }
    75% {
        transform: rotate(-20deg);
    }
}

/* Morph Animation */
@keyframes morph {
    0%, 100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }
    50% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
    }
}

/* Scroll Reveal Classes */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s ease;
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Stagger Animation Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }
.stagger-7 { transition-delay: 0.7s; }
.stagger-8 { transition-delay: 0.8s; }

/* Hero Animations */
.hero-title {
    animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
}

/* Service Cards Animation */
.service-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

/* Icon Animations */
.service-icon {
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    animation: pulse 0.6s ease infinite;
}

/* Background Shapes Animation */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.bg-shape-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.bg-shape-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    top: 60%;
    right: -5%;
    animation-delay: 2s;
}

.bg-shape-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* Counter Animation for Stats */
.stat-number {
    opacity: 0;
    transform: translateY(20px);
}

.stat-number.animated {
    animation: countUp 0.8s ease forwards;
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    animation: glow 1.5s ease infinite;
}

/* Parallax Effect */
.parallax {
    transition: transform 0.1s ease-out;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 102, 204, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Typing Animation */
.typing-effect {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typing 3s steps(40) 1s forwards, blink 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

.ripple:active::after {
    animation: ripple-effect 0.6s ease-out;
}

@keyframes ripple-effect {
    0% {
        transform: scale(0) translate(-50%, -50%);
        opacity: 1;
    }
    100% {
        transform: scale(100) translate(-50%, -50%);
        opacity: 0;
    }
}

/* Magnetic Effect */
.magnetic {
    transition: transform 0.3s ease;
}

/* Smooth Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator svg {
    width: 30px;
    height: 30px;
    fill: var(--text-light);
}

/* Progress Bar Animation */
.progress-bar {
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 1s ease;
}

.progress-bar.animated {
    width: 100%;
}

/* Card Flip Animation */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.flip-card-back {
    transform: rotateY(180deg);
}

/* Marquee Animation */
@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.marquee {
    animation: marquee 20s linear infinite;
}

/* Particle Animation */
.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 4s ease-in-out infinite;
}

/* Line Draw Animation */
.line-draw {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 3s ease forwards;
}

@keyframes drawLine {
    to {
        stroke-dashoffset: 0;
    }
}

/* Zoom In Animation */
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Swing Animation */
@keyframes swing {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(15deg);
    }
    75% {
        transform: rotate(-15deg);
    }
}

/* Tada Animation */
@keyframes tada {
    0%, 100% {
        transform: scale(1);
    }
    10%, 20% {
        transform: scale(0.9) rotate(-3deg);
    }
    30%, 50%, 70%, 90% {
        transform: scale(1.1) rotate(3deg);
    }
    40%, 60%, 80% {
        transform: scale(1.1) rotate(-3deg);
    }
}

/* Active State Animations */
.nav-item::after {
    transition: width 0.3s ease;
}

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

/* Image Hover Zoom */
.image-zoom {
    overflow: hidden;
}

.image-zoom img {
    transition: transform 0.5s ease;
}

.image-zoom:hover img {
    transform: scale(1.1);
}

/* Text Gradient Animation */
.gradient-text {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Button Loading State */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Modal Animations */
.modal {
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    transform: scale(0.9) translateY(-20px);
    transition: all 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

/* Tooltip Animation */
.tooltip {
    position: relative;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    padding: 8px 12px;
    background: var(--text-dark);
    color: white;
    font-size: 0.85rem;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.tooltip:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Notification Badge Animation */
.badge {
    animation: tada 1s ease;
}

/* Page Transition */
.page-transition {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

/* Number Counter */
.counter {
    font-variant-numeric: tabular-nums;
}

/* Smooth Number Transition */
.number-transition {
    transition: all 0.5s ease;
}