/**
 * Premium Animations & Micro-Interactions
 * Scroll-reveal, parallax, particle effects, loading states
 * @package SampreShan_Child
 */

/* === SCROLL REVEAL SYSTEM === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal--left {
    transform: translateX(-30px);
}

.reveal--left.is-visible {
    transform: translateX(0);
}

.reveal--right {
    transform: translateX(30px);
}

.reveal--right.is-visible {
    transform: translateX(0);
}

.reveal--scale {
    transform: scale(0.92);
}

.reveal--scale.is-visible {
    transform: scale(1);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }
.reveal--delay-5 { transition-delay: 0.5s; }

/* === STAGGERED CHILDREN REVEAL === */
.stagger-children > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger-children.is-visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.is-visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.is-visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.is-visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.is-visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.is-visible > *:nth-child(6) { transition-delay: 0.3s; }

.stagger-children.is-visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* === PARALLAX LAYERS === */
.parallax-container {
    perspective: 1000px;
    overflow: hidden;
}

.parallax-layer {
    will-change: transform;
    transition: transform 0.1s linear;
}

.parallax-layer--back { transform: translateZ(-200px) scale(1.2); }
.parallax-layer--mid { transform: translateZ(-100px) scale(1.1); }
.parallax-layer--front { transform: translateZ(0); }

/* === FLOATING ELEMENTS === */
.float {
    animation: float 6s ease-in-out infinite;
}

.float--slow { animation-duration: 8s; }
.float--fast { animation-duration: 4s; }

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

/* === MORPHING BORDER === */
.morph {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
    50% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
}

/* === GRADIENT TEXT ANIMATION === */
.text-gradient-animated {
    background: linear-gradient(135deg, #FF9933, #E0851A, #1E3A8A, #FF9933);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: gradient-shift 6s ease infinite;
}

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

/* === GLOW PULSE === */
.glow-pulse {
    animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 153, 51, 0.4); }
    50% { box-shadow: 0 0 20px 8px rgba(255, 153, 51, 0); }
}

/* === TYPING EFFECT === */
.typing {
    overflow: hidden;
    border-right: 2px solid var(--saffron-500);
    white-space: nowrap;
    animation: typing 3s steps(40) 1s forwards, blink 0.75s step-end infinite;
    width: 0;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

/* === CARD TILT ON HOVER === */
.tilt-card {
    transition: transform 0.3s ease;
    transform-style: preserve-3d;
}

.tilt-card:hover {
    transform: perspective(1000px) rotateX(2deg) rotateY(2deg) translateY(-4px);
}

/* === RIPPLE BUTTON === */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgba(255,255,255,0.3) 10%, transparent 10%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10);
    opacity: 0;
    transition: transform 0.5s, opacity 0.8s;
}

.btn-ripple:active::after {
    transform: scale(0);
    opacity: 0.3;
    transition: 0s;
}

/* === LOADING SPINNER === */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--saffron-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* === PULSE DOT === */
.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.5; }
}

/* === NOISE TEXTURE OVERLAY === */
.noise-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 1;
}

/* === GRADIENT TEXT SHIFT === */
@keyframes sampreshan-gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* === PARTICLE FLOAT (hero) === */
@keyframes sampreshan-particle-float {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translate(var(--tx, 60px), var(--ty, -300px)) rotate(720deg); opacity: 0; }
}

/* === MORPH BORDER === */
@keyframes sampreshan-morph {
    0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
    50% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
}

/* === FLOAT (gentle) === */
@keyframes sampreshan-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* === PULSE (gentle) === */
@keyframes sampreshan-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.92; }
}

/* === BOUNCE (gentle) === */
@keyframes sampreshan-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

/* === SPIN === */
@keyframes sampreshan-spin {
    to { transform: rotate(360deg); }
}

/* === SHIMMER (progress bars) === */
@keyframes sampreshan-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* === GLOW PULSE (icons) === */
@keyframes sampreshan-glow {
    0%, 100% { filter: drop-shadow(0 0 0 rgba(255, 153, 51, 0)); }
    50% { filter: drop-shadow(0 0 12px rgba(255, 153, 51, 0.5)); }
}

/* === BOUNCE SUBTLE (reactions) === */
@keyframes sampreshan-bounce-subtle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* === SLIDE UP (hero entrance) === */
@keyframes sampreshan-slide-up {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === SLIDE DOWN (hero entrance) === */
@keyframes sampreshan-slide-down {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === GLASS SHIMMER === */
.glass-shimmer {
    position: relative;
    overflow: hidden;
}

.glass-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    animation: glass-shimmer 3s ease-in-out infinite;
}

@keyframes glass-shimmer {
    0% { left: -100%; }
    100% { left: 200%; }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
    .reveal,
    .stagger-children > *,
    .float,
    .morph,
    .text-gradient-animated,
    .glow-pulse,
    .typing,
    .tilt-card,
    .glass-shimmer,
    .spinner,
    .pulse-dot,
    .home-hero__particle,
    .home-hero__title .text-gradient,
    .home-hero__art,
    .home-hero__art::before {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}