/**
 * TriconCore - CSS Animations
 *
 * Scroll-triggered animations, hover effects, loading states,
 * and accessibility-aware motion handling.
 */

/* ==========================================================================
   Base State for Animated Elements
   ========================================================================== */

.animate-on-scroll {
    opacity: 0;
    will-change: opacity, transform;
}

.animate-on-scroll.animate-in {
    will-change: auto;
}

/* ==========================================================================
   Animation Types
   ========================================================================== */

/* Fade Up: translateY(30px) -> translateY(0), opacity 0 -> 1 */
.fade-up {
    transform: translateY(30px);
}

.fade-up.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Fade In: opacity 0 -> 1 */
.fade-in {
    opacity: 0;
}

.fade-in.animate-in {
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

/* Fade Left: translateX(-30px) -> translateX(0), opacity 0 -> 1 */
.fade-left {
    transform: translateX(-30px);
}

.fade-left.animate-in {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Fade Right: translateX(30px) -> translateX(0), opacity 0 -> 1 */
.fade-right {
    transform: translateX(30px);
}

.fade-right.animate-in {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Scale In: scale(0.95) -> scale(1), opacity 0 -> 1 */
.scale-in {
    transform: scale(0.95);
}

.scale-in.animate-in {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

/* Slide Up: translateY(50px) -> translateY(0), opacity 0 -> 1 */
.slide-up {
    transform: translateY(50px);
}

.slide-up.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

/* ==========================================================================
   Stagger Delays
   ========================================================================== */

.delay-1 {
    transition-delay: 100ms;
}

.delay-2 {
    transition-delay: 200ms;
}

.delay-3 {
    transition-delay: 300ms;
}

.delay-4 {
    transition-delay: 400ms;
}

.delay-5 {
    transition-delay: 500ms;
}

.delay-6 {
    transition-delay: 600ms;
}

/* ==========================================================================
   Hover Animations
   ========================================================================== */

/* Hover Lift: translateY(-5px) with increased shadow */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Hover Scale: scale(1.03) */
.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Hover Glow: subtle box-shadow glow using accent color */
.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(var(--accent-color-rgb, 59, 130, 246), 0.3);
}

/* ==========================================================================
   Loading Animation
   ========================================================================== */

.pulse-loader {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: currentColor;
    animation: pulse-loader 1.4s ease-in-out infinite;
}

@keyframes pulse-loader {
    0%,
    100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==========================================================================
   Link Underline Effect
   ========================================================================== */

.link-underline {
    position: relative;
    text-decoration: none;
}

.link-underline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: currentColor;
    transition: width 0.3s ease;
}

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

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }

    .animate-on-scroll.animate-in {
        transition: none;
    }

    .fade-up,
    .fade-in,
    .fade-left,
    .fade-right,
    .scale-in,
    .slide-up {
        opacity: 1;
        transform: none;
    }

    .fade-up.animate-in,
    .fade-in.animate-in,
    .fade-left.animate-in,
    .fade-right.animate-in,
    .scale-in.animate-in,
    .slide-up.animate-in {
        transition: none;
    }

    .delay-1,
    .delay-2,
    .delay-3,
    .delay-4,
    .delay-5,
    .delay-6 {
        transition-delay: 0ms;
    }

    .hover-lift,
    .hover-scale {
        transition: none;
    }

    .hover-lift:hover {
        transform: none;
        box-shadow: none;
    }

    .hover-scale:hover {
        transform: none;
    }

    .hover-glow {
        transition: none;
    }

    .pulse-loader {
        animation: none;
        opacity: 1;
    }

    .link-underline::after {
        transition: none;
        width: 100%;
    }
}