/* ========================================
   MOTION DESIGN SYSTEM
   Premium scroll & cursor-reactive effects
   GPU-accelerated, accessibility-first
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES - Motion Config
   ======================================== */
:root {
    --motion-duration-fast: 200ms;
    --motion-duration-normal: 400ms;
    --motion-duration-slow: 600ms;
    --motion-duration-slower: 800ms;
    
    --motion-ease-out: cubic-bezier(0.33, 1, 0.68, 1);
    --motion-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --motion-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --motion-ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    --parallax-intensity: 0.15;
    --cursor-glow-size: 400px;
    --cursor-glow-opacity: 0.08;
    --magnetic-strength: 0.3;
}

/* ========================================
   REDUCED MOTION - Accessibility First
   ======================================== */
@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;
    }
    
    .motion-reveal,
    .motion-parallax,
    .motion-fade,
    [data-motion] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    
    .cursor-glow,
    .cursor-dot {
        display: none !important;
    }
    
    .motion-magnetic {
        transform: none !important;
    }
}

/* ========================================
   SCROLL REVEAL ANIMATIONS
   Bi-directional fade + translate
   ======================================== */

[data-motion="fade-up"] {
    opacity: 0;
    transform: translateY(40px);
    transition: 
        opacity var(--motion-duration-slow) var(--motion-ease-out),
        transform var(--motion-duration-slow) var(--motion-ease-out);
    will-change: opacity, transform;
}

[data-motion="fade-up"].motion-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-motion="fade-down"] {
    opacity: 0;
    transform: translateY(-40px);
    transition: 
        opacity var(--motion-duration-slow) var(--motion-ease-out),
        transform var(--motion-duration-slow) var(--motion-ease-out);
    will-change: opacity, transform;
}

[data-motion="fade-down"].motion-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-motion="fade-left"] {
    opacity: 0;
    transform: translateX(-60px);
    transition: 
        opacity var(--motion-duration-slow) var(--motion-ease-out),
        transform var(--motion-duration-slow) var(--motion-ease-out);
    will-change: opacity, transform;
}

[data-motion="fade-left"].motion-visible {
    opacity: 1;
    transform: translateX(0);
}

[data-motion="fade-right"] {
    opacity: 0;
    transform: translateX(60px);
    transition: 
        opacity var(--motion-duration-slow) var(--motion-ease-out),
        transform var(--motion-duration-slow) var(--motion-ease-out);
    will-change: opacity, transform;
}

[data-motion="fade-right"].motion-visible {
    opacity: 1;
    transform: translateX(0);
}

[data-motion="fade"] {
    opacity: 0;
    transition: opacity var(--motion-duration-slow) var(--motion-ease-out);
    will-change: opacity;
}

[data-motion="fade"].motion-visible {
    opacity: 1;
}

[data-motion="scale-up"] {
    opacity: 0;
    transform: scale(0.9);
    transition: 
        opacity var(--motion-duration-slow) var(--motion-ease-out),
        transform var(--motion-duration-slow) var(--motion-ease-spring);
    will-change: opacity, transform;
}

[data-motion="scale-up"].motion-visible {
    opacity: 1;
    transform: scale(1);
}

[data-motion="zoom-in"] {
    opacity: 0;
    transform: scale(0.95);
    transition: 
        opacity var(--motion-duration-normal) var(--motion-ease-out),
        transform var(--motion-duration-normal) var(--motion-ease-out);
    will-change: opacity, transform;
}

[data-motion="zoom-in"].motion-visible {
    opacity: 1;
    transform: scale(1);
}

/* Staggered delays for grid items */
[data-motion-delay="1"] { transition-delay: 100ms; }
[data-motion-delay="2"] { transition-delay: 200ms; }
[data-motion-delay="3"] { transition-delay: 300ms; }
[data-motion-delay="4"] { transition-delay: 400ms; }
[data-motion-delay="5"] { transition-delay: 500ms; }
[data-motion-delay="6"] { transition-delay: 600ms; }

/* ========================================
   PARALLAX LAYERS
   Depth illusion with GPU acceleration
   ======================================== */

[data-parallax] {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

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

.parallax-bg {
    position: absolute;
    inset: -20%;
    will-change: transform;
    transform: translateZ(0);
}

/* ========================================
   SCROLL PROGRESS INDICATOR
   ======================================== */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 9999;
    pointer-events: none;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary, #0D6D4A) 0%, var(--primary-light, #10B981) 100%);
    transform-origin: left;
    transform: scaleX(0);
    will-change: transform;
}

/* ========================================
   NAVBAR SCROLL BEHAVIOR
   Hide on scroll down, reveal on scroll up
   ======================================== */

.navbar {
    transition: 
        transform var(--motion-duration-normal) var(--motion-ease-out),
        box-shadow var(--motion-duration-normal) var(--motion-ease-out),
        background-color var(--motion-duration-normal) var(--motion-ease-out);
    will-change: transform;
}

.navbar.nav-hidden {
    transform: translateX(-50%) translateY(-120%);
}

.navbar.nav-shadow {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ========================================
   CURSOR GLOW EFFECT
   Soft radial gradient following cursor
   ======================================== */

.cursor-glow {
    position: fixed;
    width: var(--cursor-glow-size);
    height: var(--cursor-glow-size);
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(13, 109, 74, var(--cursor-glow-opacity)) 0%,
        rgba(13, 109, 74, 0.04) 30%,
        transparent 70%
    );
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--motion-duration-normal) var(--motion-ease-out);
    will-change: transform, opacity;
    mix-blend-mode: normal;
}

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

/* Hide on touch devices */
@media (hover: none) and (pointer: coarse) {
    .cursor-glow {
        display: none !important;
    }
}

/* ========================================
   MAGNETIC HOVER EFFECTS
   Buttons/cards attract toward cursor
   ======================================== */

.motion-magnetic {
    transition: transform var(--motion-duration-fast) var(--motion-ease-out);
    will-change: transform;
}

/* ========================================
   HOVER MICRO-ANIMATIONS
   Subtle, premium interactions
   ======================================== */

.motion-hover-lift {
    transition: 
        transform var(--motion-duration-normal) var(--motion-ease-out),
        box-shadow var(--motion-duration-normal) var(--motion-ease-out);
}

.motion-hover-lift:hover {
    transform: translateY(-6px);
    box-shadow: 
        0 20px 40px -10px rgba(0, 0, 0, 0.1),
        0 10px 20px -5px rgba(0, 0, 0, 0.04);
}

.motion-hover-scale {
    transition: transform var(--motion-duration-normal) var(--motion-ease-spring);
}

.motion-hover-scale:hover {
    transform: scale(1.03);
}

.motion-hover-glow {
    transition: box-shadow var(--motion-duration-normal) var(--motion-ease-out);
}

.motion-hover-glow:hover {
    box-shadow: 0 0 40px rgba(13, 109, 74, 0.2);
}

/* Text underline reveal */
.motion-underline {
    position: relative;
    display: inline-block;
}

.motion-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary, #0D6D4A), var(--primary-light, #10B981));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--motion-duration-normal) var(--motion-ease-out);
}

.motion-underline:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Icon rotate on hover */
.motion-icon-rotate {
    transition: transform var(--motion-duration-normal) var(--motion-ease-spring);
    display: inline-block;
}

.motion-icon-rotate:hover,
*:hover > .motion-icon-rotate {
    transform: rotate(15deg) scale(1.1);
}

/* Icon scale on hover */
.motion-icon-scale {
    transition: transform var(--motion-duration-normal) var(--motion-ease-spring);
    display: inline-block;
}

.motion-icon-scale:hover,
*:hover > .motion-icon-scale {
    transform: scale(1.2);
}

/* ========================================
   CARD DEPTH EFFECT
   3D tilt on hover
   ======================================== */

.motion-tilt {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform var(--motion-duration-fast) var(--motion-ease-out);
    will-change: transform;
}

.motion-tilt-inner {
    transform: translateZ(20px);
}

/* ========================================
   SECTION TRANSITIONS
   Smooth section entry animations
   ======================================== */

.section-animate {
    position: relative;
}

.section-animate::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary, #0D6D4A), transparent);
    transition: width var(--motion-duration-slower) var(--motion-ease-out);
}

.section-animate.motion-visible::before {
    width: 100%;
}

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

.motion-image-reveal {
    position: relative;
    overflow: hidden;
}

.motion-image-reveal::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--bg, #FAFBFC);
    transform: scaleX(1);
    transform-origin: right;
    transition: transform var(--motion-duration-slower) var(--motion-ease-in-out);
    will-change: transform;
}

.motion-image-reveal.motion-visible::after {
    transform: scaleX(0);
}

.motion-image-reveal img {
    transform: scale(1.2);
    transition: transform var(--motion-duration-slower) var(--motion-ease-out);
    transition-delay: 200ms;
}

.motion-image-reveal.motion-visible img {
    transform: scale(1);
}

/* ========================================
   COUNTER ANIMATIONS
   Number count-up effect styling
   ======================================== */

.motion-counter {
    font-variant-numeric: tabular-nums;
}

/* ========================================
   LOADING STATES
   Skeleton shimmer effect
   ======================================== */

.motion-skeleton {
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, 
        var(--bg-alt, #F1F5F9) 0%, 
        var(--surface, #FFFFFF) 50%, 
        var(--bg-alt, #F1F5F9) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* ========================================
   PERFORMANCE HINTS
   GPU layer promotion for smooth animations
   ======================================== */

.motion-gpu {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Contain paint for better performance */
.motion-contain {
    contain: layout style paint;
}

/* ========================================
   LOW POWER MODE ADJUSTMENTS
   Scale down effects on battery saver
   ======================================== */

@media (prefers-reduced-data: reduce) {
    [data-parallax] {
        transform: none !important;
    }
    
    .cursor-glow {
        display: none !important;
    }
}

/* ========================================
   PRINT STYLES
   Disable all motion for print
   ======================================== */

@media print {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
    
    [data-motion],
    .motion-reveal {
        opacity: 1 !important;
        transform: none !important;
    }
    
    .cursor-glow,
    .scroll-progress {
        display: none !important;
    }
}