/* ============================================
   ANIMATIONS & MICRO-INTERACTIONS
   Premium animations for enhanced UX
   ============================================ */

/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(99, 102, 241, 0.5),
                    0 0 10px rgba(99, 102, 241, 0.3),
                    0 0 15px rgba(99, 102, 241, 0.2);
    }
    50% {
        box-shadow: 0 0 10px rgba(99, 102, 241, 0.8),
                    0 0 20px rgba(99, 102, 241, 0.5),
                    0 0 30px rgba(99, 102, 241, 0.3);
    }
}

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--surface) 0%,
        var(--border-color) 50%,
        var(--surface) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius);
}

.skeleton-card {
    height: 200px;
    margin-bottom: 1rem;
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
    width: 100%;
}

.skeleton-text:last-child {
    width: 60%;
}

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

.spinner-small {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

/* Tool Card Animations */
.tool-card {
    animation: fadeInUp 0.5s ease-out;
    animation-fill-mode: both;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s ease;
}

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

/* Stagger animation delays */
.tool-card:nth-child(1) { animation-delay: 0.05s; }
.tool-card:nth-child(2) { animation-delay: 0.1s; }
.tool-card:nth-child(3) { animation-delay: 0.15s; }
.tool-card:nth-child(4) { animation-delay: 0.2s; }
.tool-card:nth-child(5) { animation-delay: 0.25s; }
.tool-card:nth-child(6) { animation-delay: 0.3s; }
.tool-card:nth-child(7) { animation-delay: 0.35s; }
.tool-card:nth-child(8) { animation-delay: 0.4s; }

/* Hero Animations */
.hero {
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

.hero-title {
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    animation: fadeInUp 1s ease-out;
}

.hero-description {
    animation: fadeInUp 1.2s ease-out;
}

.stat {
    animation: scaleIn 0.6s ease-out;
    animation-fill-mode: both;
}

.stat:nth-child(1) { animation-delay: 0.2s; }
.stat:nth-child(2) { animation-delay: 0.3s; }
.stat:nth-child(3) { animation-delay: 0.4s; }
.stat:nth-child(4) { animation-delay: 0.5s; }

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

.btn-ripple::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-ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Modal Animations */
.tool-modal {
    backdrop-filter: blur(10px);
}

.tool-modal.active .modal-content {
    animation: scaleIn 0.3s ease-out;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--surface);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    animation: slideInRight 0.3s ease-out;
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 400px;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

.toast-exit {
    animation: slideInRight 0.3s ease-out reverse;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-hover);
    cursor: pointer;
    transition: var(--transition);
    z-index: 1000;
    animation: float 3s ease-in-out infinite;
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: var(--text-primary);
    color: var(--surface);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    white-space: nowrap;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.2s, transform 0.2s;
}

.tooltip.show {
    opacity: 1;
    transform: translateY(0);
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--text-primary);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    animation: scaleIn 0.3s ease-out;
}

.badge-new {
    background: var(--success-color);
    color: white;
    animation: pulse 2s infinite;
}

.badge-popular {
    background: var(--accent-color);
    color: var(--text-primary);
}

.badge-premium {
    background: var(--primary-gradient);
    color: white;
}

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

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

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

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

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

/* Particle Background */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 10s infinite ease-in-out;
}

/* Glassmorphism */
.glass {
    background: var(--glass-background);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Neon Glow Effect */
.neon {
    animation: glow 2s ease-in-out infinite;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 4px;
}

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

/* Print Styles */
@media print {
    .skeleton,
    .spinner,
    .toast,
    .fab,
    .tooltip {
        display: none !important;
    }
}