/* ========== SMOOTH EXPERIENCE ENHANCED ==========
 * Ultra-smooth performance for all devices
 * - Skeleton screens for instant visual feedback
 * - GPU acceleration for smooth animations
 * - Low-end device detection and optimization
 * - Progressive image loading
 * =============================================== */

/* ========== CSS VARIABLES ========== */
:root {
    --skeleton-bg: #f0f0f0;
    --skeleton-shine: #e8e8e8;
    --skeleton-animation-duration: 1.5s;
    --transition-smooth: cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========== SKELETON SCREENS ========== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--skeleton-bg) 25%,
        var(--skeleton-shine) 50%,
        var(--skeleton-bg) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading var(--skeleton-animation-duration) ease-in-out infinite;
    border-radius: 4px;
}

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

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text:last-child {
    width: 80%;
}

.skeleton-image {
    aspect-ratio: 16/9;
    width: 100%;
}

.skeleton-card {
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* ========== PROGRESSIVE IMAGE LOADING ========== */
.image-wrapper {
    position: relative;
    overflow: hidden;
    background: var(--skeleton-bg);
}

.image-wrapper img {
    opacity: 0;
    transition: opacity 0.4s var(--transition-smooth);
}

.image-wrapper img.loaded {
    opacity: 1;
}

.image-wrapper img.loading {
    filter: blur(10px);
    transform: scale(1.05);
}

/* ========== GPU ACCELERATION UTILITIES ========== */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: transform;
}

.gpu-layer {
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

/* ========== SMOOTH REVEAL ANIMATIONS ========== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s var(--transition-smooth), 
                transform 0.5s var(--transition-bounce);
}

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

.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.4s var(--transition-smooth), 
                transform 0.4s var(--transition-bounce);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.5s var(--transition-smooth), 
                transform 0.5s var(--transition-bounce);
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.5s var(--transition-smooth), 
                transform 0.5s var(--transition-bounce);
}

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

/* Staggered children animation */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s var(--transition-smooth), 
                transform 0.4s var(--transition-bounce);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(7) { transition-delay: 480ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(8) { transition-delay: 560ms; opacity: 1; transform: translateY(0); }

/* ========== SMOOTH SCROLL ENHANCEMENTS ========== */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .reveal, .reveal-scale, .reveal-left, .reveal-right {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ========== INSTANT FEEDBACK ========== */
.instant-feedback {
    position: relative;
    overflow: hidden;
}

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

.instant-feedback:active::after {
    width: 200%;
    height: 200%;
}

/* ========== CONTENT VISIBILITY FOR PERFORMANCE ========== */
.content-section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

/* ========== LOW-END DEVICE OPTIMIZATIONS ========== */
.low-end-device .reveal,
.low-end-device .reveal-scale,
.low-end-device .reveal-left,
.low-end-device .reveal-right {
    opacity: 1;
    transform: none;
    transition: none;
}

.low-end-device .skeleton {
    animation: none;
    background: var(--skeleton-bg);
}

.low-end-device .stagger-children > * {
    opacity: 1;
    transform: none;
    transition: none;
}

/* ========== HERO SECTION SMOOTHNESS ========== */
.hero-video-container {
    position: relative;
    overflow: hidden;
}

.hero-video-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.4));
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* ========== CARD HOVER SMOOTHNESS ========== */
.smooth-card {
    transition: transform 0.3s var(--transition-bounce),
                box-shadow 0.3s var(--transition-smooth);
    will-change: transform;
}

.smooth-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

/* ========== BUTTON SMOOTHNESS ========== */
.smooth-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s var(--transition-bounce);
    will-change: transform;
}

.smooth-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.smooth-btn:hover::before {
    left: 100%;
}

.smooth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(138, 162, 67, 0.3);
}

.smooth-btn:active {
    transform: translateY(0);
}

/* ========== LOADING STATES ========== */
.loading-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========== SCROLLBAR SMOOTHNESS ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
    transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: #8AA243;
}

/* ========== IMAGE LOADING TRANSITIONS ========== */
img {
    transition: opacity 0.3s ease, filter 0.3s ease;
}

img[data-src] {
    opacity: 0;
}

img[data-src].loaded {
    opacity: 1;
}

/* ========== MODAL SMOOTHNESS ========== */
.modal-overlay {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--transition-smooth),
                visibility 0.3s var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    transition: transform 0.4s var(--transition-bounce),
                opacity 0.3s var(--transition-smooth);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
}

/* ========== PARALLAX SMOOTHNESS ========== */
.parallax-container {
    overflow: hidden;
    position: relative;
}

.parallax-element {
    will-change: transform;
    transform: translateZ(0);
}

/* ========== MOBILE TOUCH OPTIMIZATIONS ========== */
@media (hover: none) and (pointer: coarse) {
    .smooth-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    .smooth-btn:hover {
        transform: none;
        box-shadow: none;
    }
    
    .smooth-btn:active {
        transform: scale(0.98);
    }
}

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