/* =============================================
   ANIMATIONS & SCROLL EFFECTS
   ============================================= */

/* Fade Up Animation */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Service Card Hover Effects */
.service-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Why Card - clean border highlight on hover */

/* Counter Animation */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Truck Animation for About Section */
@keyframes driveTruck {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Typing effect for hero */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Gradient border animation */
@keyframes gradientBorder {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Smooth entrance for modals */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Ripple effect on buttons */
.btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Parallax-like effects */
.hero-bg {
    transition: transform 0.1s ease-out;
}

/* Smooth scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-50);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray);
}

/* Selection color */
::selection {
    background: rgba(27, 77, 142, 0.2);
    color: var(--dark);
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Smooth image loading */
img {
    transition: opacity 0.3s ease;
}

img[loading="lazy"] {
    opacity: 0;
}

img.loaded {
    opacity: 1;
}

/* Card tilt effect on hover (subtle) */
.service-card:hover {
    transform: translateY(-8px);
}

.why-card:hover {
    transform: translateY(-6px);
}

/* Nav link underline animation */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - 32px);
}

/* Stagger children animation */
.services-grid .service-card:nth-child(1) { transition-delay: 0s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(4) { transition-delay: 0.3s; }

.why-grid .why-card:nth-child(1) { transition-delay: 0s; }
.why-grid .why-card:nth-child(2) { transition-delay: 0.1s; }
.why-grid .why-card:nth-child(3) { transition-delay: 0.15s; }
.why-grid .why-card:nth-child(4) { transition-delay: 0.2s; }
.why-grid .why-card:nth-child(5) { transition-delay: 0.25s; }
.why-grid .why-card:nth-child(6) { transition-delay: 0.3s; }

/* Form focus animations */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    transform: translateY(-1px);
}

/* Loading shimmer for dynamic content */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.shimmer {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Hero parallax shapes movement */
@media (prefers-reduced-motion: no-preference) {
    .shape-1 { animation: float 20s ease-in-out infinite; }
    .shape-2 { animation: float 15s ease-in-out infinite reverse; }
    .shape-3 { animation: float 10s ease-in-out infinite 2s; }
}

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

    .fade-up {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}