/* ==========================================
   Animations & Keyframes
   Modern micro-animations for enhanced UX
   ========================================== */

/* ==========================================
   1. Entrance Animations
   ========================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@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 slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(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);
    }
}

/* ==========================================
   2. Background Animations
   ========================================== */

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

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

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

    to {
        transform: rotate(360deg);
    }
}

/* ==========================================
   3. Interaction Animations
   ========================================== */

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-15px);
    }

    60% {
        transform: translateY(-7px);
    }
}

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

    100% {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 20px hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.4);
    }

    50% {
        box-shadow: 0 0 40px hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.8);
    }
}

/* ==========================================
   4. Loading Animations
   ========================================== */

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

    to {
        transform: rotate(360deg);
    }
}

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

    to {
        transform: rotate(360deg);
    }
}

@keyframes dotsLoading {

    0%,
    20% {
        color: transparent;
        text-shadow: 0.25em 0 0 transparent, 0.5em 0 0 transparent;
    }

    40% {
        color: currentColor;
        text-shadow: 0.25em 0 0 transparent, 0.5em 0 0 transparent;
    }

    60% {
        text-shadow: 0.25em 0 0 currentColor, 0.5em 0 0 transparent;
    }

    80%,
    100% {
        text-shadow: 0.25em 0 0 currentColor, 0.5em 0 0 currentColor;
    }
}

/* ==========================================
   5. Utility Animation Classes
   ========================================== */

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-down {
    animation: fadeInDown 0.6s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.4s ease-out;
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

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

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-spin-slow {
    animation: spinSlow 3s linear infinite;
}

/* ==========================================
   6. Gradient Animation Backgrounds
   ========================================== */

.bg-gradient-animated {
    background: linear-gradient(-45deg,
            hsl(230, 95%, 58%),
            hsl(280, 85%, 60%),
            hsl(340, 90%, 55%),
            hsl(230, 95%, 58%));
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

/* ==========================================
   7. Loading Spinner
   ========================================== */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* ==========================================
   8. Staggered Animations
   ========================================== */

.stagger-animation>* {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.stagger-animation>*:nth-child(1) {
    animation-delay: 0.1s;
}

.stagger-animation>*:nth-child(2) {
    animation-delay: 0.2s;
}

.stagger-animation>*:nth-child(3) {
    animation-delay: 0.3s;
}

.stagger-animation>*:nth-child(4) {
    animation-delay: 0.4s;
}

.stagger-animation>*:nth-child(5) {
    animation-delay: 0.5s;
}

/* ==========================================
   9. Hover Effects
   ========================================== */

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-glow {
    transition: box-shadow var(--transition-base);
}

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

/* ==========================================
   10. Focus Visible Animations
   ========================================== */

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    transition: outline-offset var(--transition-fast);
}

/* ==========================================
   11. Transition Utilities
   ========================================== */

.transition-all {
    transition: all var(--transition-base);
}

.transition-colors {
    transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.transition-transform {
    transition: transform var(--transition-base);
}

.transition-opacity {
    transition: opacity var(--transition-base);
}

/* ==========================================
   12. Smooth Scroll
   ========================================== */

html {
    scroll-behavior: smooth;
}

/* ==========================================
   13. Reduced Motion
   ========================================== */

@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;
    }
}