/* Animations and Enhanced Styling */

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.8);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Apply animations to elements */

.logo {
    animation: fadeInDown 0.8s ease-out;
}

.title {
    animation: fadeInDown 1s ease-out 0.2s both;
}

.subtitle {
    animation: fadeInDown 1s ease-out 0.4s both;
}

.description {
    animation: fadeInUp 1s ease-out 0.6s both;
}

.message {
    animation: slideInLeft 1s ease-out 0.8s both;
}

.safety-banner {
    animation: slideInRight 1s ease-out 1s both;
}

.selection-card {
    animation: fadeInUp 1s ease-out;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.selection-card:nth-child(1) {
    animation-delay: 1.2s;
}

.selection-card:nth-child(2) {
    animation-delay: 1.4s;
}

.selection-card:hover {
    animation: glow 2s ease-in-out infinite;
}

.card-button {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card-button:hover {
    animation: bounce 0.6s ease-in-out;
}

.card-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s ease;
}

.card-button:hover::before {
    left: 100%;
}

/* Enhanced hover effects */

.selection-card {
    position: relative;
    overflow: hidden;
}

.selection-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.selection-card:hover::before {
    opacity: 1;
}

/* Smooth transitions */

* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Loading animation */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    border-top-color: #667eea;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Tooltip animation */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Smooth scroll behavior */

html {
    scroll-behavior: smooth;
}

/* Enhanced focus states for accessibility */

button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Gradient text effect */

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Icon animations */

.icon-bounce {
    animation: bounce 1s ease-in-out infinite;
}

.icon-spin {
    animation: spin 2s linear infinite;
}

.icon-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Card flip effect */

.flip-card {
    background-color: transparent;
    width: 100%;
    height: 100%;
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    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 {
    background-color: #667eea;
    color: white;
    transform: rotateY(180deg);
}

/* Stagger animation for lists */

.stagger-item {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

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

/* Responsive animations */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Enhanced button effects */

.btn-primary, .btn-secondary, .card-button {
    position: relative;
    overflow: hidden;
}

.btn-primary::after, .btn-secondary::after, .card-button::after {
    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-primary:active::after, .btn-secondary:active::after, .card-button:active::after {
    width: 300px;
    height: 300px;
}

/* Fade in on scroll */

.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Parallax effect */

.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Enhanced link hover effects */

a {
    position: relative;
    text-decoration: none;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

a:hover::after {
    width: 100%;
}