/* ==========================================
   IZZAD.STUDIO - ANIMATIONS STYLESHEET
   Scroll-triggered & Microinteractions
   ========================================== */

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

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In from Left */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fade In from Right */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale In Animation */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Pulse (for hero indicator) */
@keyframes scrollPulse {
    0%, 100% {
        opacity: 0;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(10px);
    }
}

/* Spinner Animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Color Reveal Animation (Gradient Sweep) */
@keyframes colorReveal {
    from {
        clip-path: circle(0% at 50% 50%);
    }
    to {
        clip-path: circle(150% at 50% 50%);
    }
}

/* Slide Up Animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Hero Title Fade In */
.hero__title {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

/* Hero Subtitle with Delay */
.hero__subtitle {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.6s forwards;
}

/* Hero CTA with Longer Delay */
.hero__cta {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.9s forwards;
}

/* ==========================================
   SCROLL-TRIGGERED ANIMATIONS
   ========================================== */

/* Base state for elements that will animate on scroll */
.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Slide from left on scroll */
.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Slide from right on scroll */
.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale up on scroll */
.scale-in-scroll {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in-scroll.visible {
    opacity: 1;
    transform: scale(1);
}

/* Staggered animation for grid items */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Delay variations for staggered items */
.stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-item:nth-child(4) { transition-delay: 0.4s; }
.stagger-item:nth-child(5) { transition-delay: 0.5s; }
.stagger-item:nth-child(6) { transition-delay: 0.6s; }
.stagger-item:nth-child(7) { transition-delay: 0.7s; }
.stagger-item:nth-child(8) { transition-delay: 0.8s; }

/* ==========================================
   GALLERY ANIMATIONS
   ========================================== */

/* Gallery Item Hover - Enhanced with subtle float */
.gallery-item {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover {
    transform: translateY(-12px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
}

/* Color Reveal Effect - Smooth gradient reveal */
.gallery-item__image-color {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover .gallery-item__image-color {
    opacity: 1;
}

/* Interlude section fade in */
.interlude__text {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1),
                transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.interlude__text.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   MODAL ANIMATIONS
   ========================================== */

/* Modal Enter Animation */
.modal[aria-hidden="false"] {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal__content {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modal Body Content Fade In */
.modal__body > * {
    opacity: 0;
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

/* ==========================================
   CAROUSEL ANIMATIONS
   ========================================== */

/* Smooth slide transition */
.carousel__track {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Carousel image fade in when loaded */
.carousel__image {
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel__image.loaded {
    opacity: 1;
}

/* Carousel button hover effect */
.carousel__button {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel__button:hover {
    transform: translateY(-50%) scale(1.1);
}

.carousel__button:active {
    transform: translateY(-50%) scale(0.95);
}

/* ==========================================
   FORM ANIMATIONS
   ========================================== */

/* Input Focus Animation */
.form-input {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus {
    transform: scale(1.01);
}

/* Label Float Animation (if implementing floating labels) */
.form-group {
    position: relative;
}

.form-label-float {
    position: absolute;
    top: 1rem;
    left: 1rem;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus + .form-label-float,
.form-input:not(:placeholder-shown) + .form-label-float {
    top: -0.5rem;
    left: 0.5rem;
    font-size: 0.75rem;
    background-color: white;
    padding: 0 0.25rem;
}

/* Submit Button Ripple Effect */
.form-submit {
    position: relative;
    overflow: hidden;
}

.form-submit::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.form-submit:active::after {
    width: 300px;
    height: 300px;
}

/* Success Message Animation */
.form-success {
    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   NAVIGATION ANIMATIONS
   ========================================== */

/* Nav hide on scroll down, show on scroll up */
.nav.nav--hidden {
    transform: translateY(-100%);
}

.nav.nav--visible {
    transform: translateY(0);
}

/* ==========================================
   ABOUT SECTION ANIMATIONS
   ========================================== */

/* Team member image hover effect */
.team-member__image-wrapper {
    transition: filter 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.team-member:hover .team-member__image-wrapper {
    transform: scale(1.05);
}

/* ==========================================
   PROCESS SECTION ANIMATIONS
   ========================================== */

/* Process step hover with subtle color hint */
.process-step {
    position: relative;
    overflow: hidden;
}

.process-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.process-step:hover::before {
    left: 100%;
}

/* ==========================================
   PARALLAX EFFECTS (Optional)
   ========================================== */

/* Subtle parallax for hero section */
.hero__container {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Applied via JavaScript for smooth parallax */
.parallax-layer {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Skeleton loader for images */
.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
}

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

/* Image lazy load fade in */
.lazy-image {
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.lazy-image.loaded {
    opacity: 1;
}

/* ==========================================
   MICROINTERACTIONS
   ========================================== */

/* Link underline effect */
.link-underline {
    position: relative;
    display: inline-block;
}

.link-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: currentColor;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Button press effect */
.button-press {
    transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.button-press:active {
    transform: scale(0.97);
}

/* ==========================================
   ACCESSIBILITY - REDUCED MOTION
   ========================================== */

/* Respect user's motion preferences */
@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;
    }
    
    .hero__scroll-line {
        animation: none;
    }
    
    .parallax-layer {
        transform: none !important;
    }
}

/* ==========================================
   PERFORMANCE OPTIMIZATIONS
   ========================================== */

/* Force GPU acceleration for smooth animations */
.portfolio-item,
.modal__content,
.carousel__track,
.process-step {
    will-change: transform;
}

/* Remove will-change after animation completes (set via JS) */
.animation-complete {
    will-change: auto;
}