/* ==========================================
   SOLVERO.DE - ANIMATIONS & TRANSITIONS
   Smooth Animationen für alle Interaktionen
   ========================================== */

/* ==========================================
   KEYFRAME ANIMATIONS
   ========================================== */

/* Yin-Yang Rotation */
@keyframes rotateYinyang {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Fade 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 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);
    }
}

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

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

@keyframes slideInUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

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

@keyframes scaleUp {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.1);
    }
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* Bounce Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Shake Animation */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Rotate Animations */
@keyframes rotate360 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes flip {
    from {
        transform: perspective(400px) rotateY(0);
    }
    to {
        transform: perspective(400px) rotateY(180deg);
    }
}

/* Draw Line Animation */
@keyframes drawLine {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

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

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

/* Typewriter Effect */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blinkCursor {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--black);
    }
}

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

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

/* Fade Animations */
.animate-fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-fade-in-down {
    animation: fadeInDown var(--transition-slow) ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft var(--transition-slow) ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight var(--transition-slow) ease-out;
}

/* Slide Animations */
.animate-slide-in-left {
    animation: slideInLeft var(--transition-slow) ease-out;
}

.animate-slide-in-right {
    animation: slideInRight var(--transition-slow) ease-out;
}

.animate-slide-in-up {
    animation: slideInUp var(--transition-slow) ease-out;
}

.animate-slide-in-down {
    animation: slideInDown var(--transition-slow) ease-out;
}

/* Scale Animations */
.animate-scale-in {
    animation: scaleIn var(--transition-slow) ease-out;
}

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

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

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

.animate-rotate {
    animation: rotate360 1s linear infinite;
}

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

/* Animation Delays */
.animate-delay-1 {
    animation-delay: 0.1s;
}

.animate-delay-2 {
    animation-delay: 0.2s;
}

.animate-delay-3 {
    animation-delay: 0.3s;
}

.animate-delay-4 {
    animation-delay: 0.4s;
}

.animate-delay-5 {
    animation-delay: 0.5s;
}

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

/* Underline Hover */
.hover-underline {
    position: relative;
}

.hover-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width var(--transition-base);
}

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

/* Background Slide Hover */
.hover-bg-slide {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.hover-bg-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--black);
    transition: left var(--transition-base);
    z-index: -1;
}

.hover-bg-slide:hover::before {
    left: 0;
}

/* Scale Hover */
.hover-scale {
    transition: transform var(--transition-base);
}

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

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

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Glow Effect */
.hover-glow {
    transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
    box-shadow: 0 0 20px var(--black-30);
}

/* Tilt Effect */
.hover-tilt {
    transition: transform var(--transition-base);
}

.hover-tilt:hover {
    transform: perspective(1000px) rotateX(5deg) rotateY(5deg);
}

/* ==========================================
   SCROLL ANIMATIONS (controlled by JS)
   ========================================== */

.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity var(--transition-slow),
                transform var(--transition-slow);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.scroll-reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity var(--transition-slow),
                transform var(--transition-slow);
}

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

.scroll-reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity var(--transition-slow),
                transform var(--transition-slow);
}

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

.scroll-reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity var(--transition-slow),
                transform var(--transition-slow);
}

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

/* ==========================================
   LOADING ANIMATIONS
   ========================================== */

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-900);
    border-top-color: var(--black);
    border-radius: 50%;
    animation: rotate360 0.8s linear infinite;
}

.loading-dots span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--black);
    border-radius: 50%;
    margin: 0 4px;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

/* Progress Bar Animation */
.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--gray-900);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--black);
    transition: width var(--transition-base);
}

.progress-bar-animated .progress-bar-fill {
    animation: shimmer 2s infinite;
    background: linear-gradient(
        90deg,
        var(--black) 0%,
        var(--gray-500) 50%,
        var(--black) 100%
    );
    background-size: 200% 100%;
}

/* ==========================================
   CARD FLIP ANIMATION
   ========================================== */

.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform var(--transition-slow);
    transform-style: preserve-3d;
}

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

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

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

/* ==========================================
   TRANSITION UTILITIES
   ========================================== */

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

.transition-fast {
    transition-duration: var(--transition-fast);
}

.transition-slow {
    transition-duration: var(--transition-slow);
}

.transition-elastic {
    transition-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.transition-none {
    transition: none !important;
}

/* ==========================================
   STAGGER ANIMATIONS (for lists)
   ========================================== */

.stagger-fade-in > *:nth-child(1) {
    animation: fadeInUp var(--transition-slow) ease-out 0.1s both;
}

.stagger-fade-in > *:nth-child(2) {
    animation: fadeInUp var(--transition-slow) ease-out 0.2s both;
}

.stagger-fade-in > *:nth-child(3) {
    animation: fadeInUp var(--transition-slow) ease-out 0.3s both;
}

.stagger-fade-in > *:nth-child(4) {
    animation: fadeInUp var(--transition-slow) ease-out 0.4s both;
}

.stagger-fade-in > *:nth-child(5) {
    animation: fadeInUp var(--transition-slow) ease-out 0.5s both;
}

.stagger-fade-in > *:nth-child(6) {
    animation: fadeInUp var(--transition-slow) ease-out 0.6s both;
}

/* ==========================================
   PARALLAX EFFECTS (controlled by JS)
   ========================================== */

.parallax {
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* ==========================================
   IMAGE ANIMATIONS
   ========================================== */

.image-zoom-container {
    overflow: hidden;
}

.image-zoom {
    transition: transform var(--transition-slow);
}

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

.image-fade-in {
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.image-fade-in.loaded {
    opacity: 1;
}

/* Greyscale to Color Effect */
.image-grayscale {
    filter: grayscale(100%);
    transition: filter var(--transition-base);
}

.image-grayscale:hover {
    filter: grayscale(0%);
}

/* ==========================================
   TEXT ANIMATIONS
   ========================================== */

.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: fadeInUp var(--transition-base) ease-out forwards;
}

/* Typewriter Effect */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--black);
    white-space: nowrap;
    margin: 0 auto;
    letter-spacing: 0.15em;
    animation:
        typing 3.5s steps(40, end),
        blinkCursor 0.75s step-end infinite;
}

/* ==========================================
   RESPONSIVE ANIMATIONS
   ========================================== */

@media (max-width: 768px) {
    /* Reduce animation complexity on mobile for performance */
    .parallax {
        transform: none !important;
    }

    .hover-tilt:hover {
        transform: none;
    }

    /* Faster animations on mobile */
    .flip-card-inner {
        transition-duration: var(--transition-base);
    }
}

/* ==========================================
   ACCESSIBILITY - RESPECT 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;
    }

    .animate-pulse,
    .animate-bounce,
    .animate-float,
    .animate-rotate {
        animation: none !important;
    }

    .scroll-reveal,
    .scroll-reveal-left,
    .scroll-reveal-right,
    .scroll-reveal-scale {
        opacity: 1 !important;
        transform: none !important;
    }
}