{# ============================================
     ANIMATIONS CSS
     ============================================ #}

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

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Slide In From Left */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide In From Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Shimmer Loading Effect */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

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

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

/* ============================================
     ANIMATION CLASSES
     ============================================ */

/* Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Staggered Animation Delays */
.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

/* Fade In Up */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Fade In */
.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Slide In Left */
.slide-in-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

/* Slide In Right */
.slide-in-right {
    animation: slideInRight 0.6s ease-out forwards;
}

/* Scale In */
.scale-in {
    animation: scaleIn 0.4s ease-out forwards;
}

/* ============================================
     HOVER EFFECTS
     ============================================ */

/* Card Hover Effect */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.15);
}

/* Button Hover Effect */
.btn-hover {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-hover::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;
}

.btn-hover:hover::before {
    left: 100%;
}

/* Icon Hover Effect */
.icon-hover {
    transition: transform 0.3s ease, color 0.3s ease;
}

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

/* Link Underline Animation */
.link-underline {
    position: relative;
    text-decoration: none;
}

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

.link-underline:hover::after {
    width: 100%;
}

/* ============================================
     LOADING STATES
     ============================================ */

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(13, 148, 136, 0.2);
    border-top-color: #0d9488;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    margin-bottom: 16px;
    width: 60%;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

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

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ============================================
     SUCCESS/ERROR STATES
     ============================================ */

/* Success Checkmark Animation */
.checkmark {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: block;
    stroke-width: 2;
    stroke: #22c55e;
    stroke-miterlimit: 10;
    box-shadow: inset 0 0 0 #22c55e;
    animation: fill 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
}

.checkmark__circle {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    stroke-width: 2;
    stroke-miterlimit: 10;
    stroke: #22c55e;
    fill: none;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark__check {
    transform-origin: 50% 50%;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.8s forwards;
}

@keyframes stroke {
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes scale {
    0%, 100% {
        transform: none;
    }
    50% {
        transform: scale3d(1.1, 1.1, 1);
    }
}

@keyframes fill {
    100% {
        box-shadow: inset 0 0 0 30px #22c55e;
    }
}

/* Error Shake Animation */
.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% {
        transform: translate3d(-1px, 0, 0);
    }
    20%, 80% {
        transform: translate3d(2px, 0, 0);
    }
    30%, 50%, 70% {
        transform: translate3d(-4px, 0, 0);
    }
    40%, 60% {
        transform: translate3d(4px, 0, 0);
    }
}

/* Success Fade In */
.success-fade-in {
    animation: successFadeIn 0.5s ease-out forwards;
}

@keyframes successFadeIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
     UTILITY ANIMATIONS
     ============================================ */

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

/* Focus Visible (for accessibility) */
:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

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