/* Yaan Batho - Advanced Animations */
/* Inspired by ui.aceternity.com, animista.net, brittanychiang.com */

/* ============================================
   SCROLL-TRIGGERED ANIMATIONS (GSAP-powered)
   ============================================ */

/* Fade-in from below with stagger (for project cards) */
.fade-in-up {
    opacity: 0;
    transform: translateY(60px);
}

.fade-in-up.visible {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

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

/* Text reveal animation (for headings) */
.reveal-text {
    position: relative;
    overflow: hidden;
}

.reveal-text::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    transform-origin: left;
    animation: revealText 1.2s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

@keyframes revealText {
    to {
        transform: scaleX(0);
        transform-origin: right;
    }
}

/* ============================================
   PARALLAX EFFECT
   ============================================ */

.parallax-container {
    position: relative;
    overflow: hidden;
}

.parallax-layer {
    will-change: transform;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================
   HERO ANIMATIONS
   ============================================ */

/* Typewriter effect for tagline */
.typewriter {
    display: inline-block;
    overflow: hidden;
    border-right: 3px solid var(--accent-red);
    white-space: nowrap;
    animation: 
        typing 3.5s steps(40, end) forwards,
        blink-caret 0.75s step-end infinite;
}

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

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--accent-red); }
}

/* Floating particles in hero */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    animation: float linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(100px);
        opacity: 0;
    }
}

/* Stagger particle animation timings */
.particle:nth-child(1) { left: 10%; animation-duration: 8s; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; animation-duration: 12s; animation-delay: 2s; }
.particle:nth-child(3) { left: 30%; animation-duration: 10s; animation-delay: 4s; }
.particle:nth-child(4) { left: 40%; animation-duration: 15s; animation-delay: 1s; }
.particle:nth-child(5) { left: 50%; animation-duration: 11s; animation-delay: 3s; }
.particle:nth-child(6) { left: 60%; animation-duration: 14s; animation-delay: 5s; }
.particle:nth-child(7) { left: 70%; animation-duration: 9s; animation-delay: 2.5s; }
.particle:nth-child(8) { left: 80%; animation-duration: 13s; animation-delay: 4.5s; }
.particle:nth-child(9) { left: 90%; animation-duration: 16s; animation-delay: 1.5s; }
.particle:nth-child(10) { left: 95%; animation-duration: 12s; animation-delay: 3.5s; }

/* ============================================
   GLASS MORPHISM NAVBAR (scroll effect)
   ============================================ */

header {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

header.scrolled {
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

header.scrolled::after {
    opacity: 0.8;
}

/* ============================================
   CARD HOVER ANIMATIONS
   ============================================ */

/* Animated gradient glow on hover */
.card {
    position: relative;
    overflow: hidden;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle,
        rgba(255, 0, 64, 0.15) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
}

.card:hover::after {
    opacity: 1;
    animation: rotateGlow 3s linear infinite;
}

@keyframes rotateGlow {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Card lift with smooth shadow transition */
.card {
    transition: 
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.4s ease,
        border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-12px) scale(1.02);
}

/* ============================================
   STATS COUNTER SECTION
   ============================================ */

.stats-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, rgba(17, 17, 17, 0.8), rgba(10, 10, 10, 0.9));
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.03),
        transparent
    );
    animation: shimmer 3s infinite;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 20px;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.stat-item.visible {
    opacity: 1;
    transform: scale(1);
}

.stat-number {
    font-size: clamp(40px, 6vw, 60px);
    font-family: var(--font-heading);
    font-weight: 900;
    background: linear-gradient(135deg, #FFFFFF 0%, var(--accent-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    display: block;
    position: relative;
}

.stat-label {
    font-size: 14px;
    color: rgba(237, 237, 237, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ============================================
   MAGNETIC CURSOR EFFECT
   ============================================ */

.magnetic {
    position: relative;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.magnetic:hover {
    z-index: 10;
}

/* Custom cursor */
.custom-cursor {
    width: 20px;
    height: 20px;
    border: 2px solid var(--accent-red);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0;
    mix-blend-mode: difference;
    box-shadow: 0 0 20px rgba(255, 0, 64, 0.6);
}

.custom-cursor.active {
    opacity: 1;
}

.custom-cursor.hover {
    transform: scale(2);
    background: rgba(255, 0, 64, 0.2);
}

.custom-cursor-follower {
    width: 8px;
    height: 8px;
    background: var(--accent-red);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transition: transform 0.15s ease;
    opacity: 0;
    box-shadow: 0 0 15px rgba(255, 0, 64, 0.8);
}

.custom-cursor-follower.active {
    opacity: 1;
}

/* ============================================
   PAGE TRANSITION / LOADING ANIMATION
   ============================================ */

.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
}

.page-transition-content {
    text-align: center;
}

.loader {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--accent-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    box-shadow: 0 0 30px rgba(255, 0, 64, 0.3);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader-text {
    font-family: var(--font-heading);
    font-size: 14px;
    letter-spacing: 0.2em;
    color: rgba(237, 237, 237, 0.6);
    animation: pulse 1.5s ease-in-out infinite;
}

/* ============================================
   SCROLL PROGRESS BAR
   ============================================ */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-red), #FF6B9D);
    z-index: 9999;
    transition: width 0.1s ease;
    box-shadow: 0 0 20px rgba(255, 0, 64, 0.8);
}

/* ============================================
   SMOOTH REVEAL ANIMATIONS (on scroll)
   ============================================ */

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Stagger delays for multiple elements */
.reveal-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.reveal-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.reveal-on-scroll:nth-child(3) { transition-delay: 0.3s; }
.reveal-on-scroll:nth-child(4) { transition-delay: 0.4s; }
.reveal-on-scroll:nth-child(5) { transition-delay: 0.5s; }
.reveal-on-scroll:nth-child(6) { transition-delay: 0.6s; }

/* ============================================
   HOVER TILT EFFECT (for cards)
   ============================================ */

.tilt-card {
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.tilt-card:hover {
    transform: perspective(1000px) rotateX(var(--rotate-x, 0deg)) rotateY(var(--rotate-y, 0deg));
}

/* ============================================
   GRADIENT TEXT ANIMATION
   ============================================ */

.animated-gradient-text {
    background: linear-gradient(
        90deg,
        #FFFFFF 0%,
        var(--accent-red) 50%,
        #FFFFFF 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s linear infinite;
}

@keyframes gradientShift {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* ============================================
   BOUNCE ARROW (for CTAs)
   ============================================ */

.bounce-arrow {
    display: inline-block;
    animation: bounce 2s infinite;
}

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

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    /* Disable complex animations on mobile for performance */
    .custom-cursor,
    .custom-cursor-follower {
        display: none !important;
    }
    
    .particle {
        animation-duration: 20s !important; /* Slower on mobile */
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .tilt-card:hover {
        transform: none;
    }
}

/* ============================================
   PREFERS REDUCED MOTION
   ============================================ */

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