/* ==========================================================================
   ANIMATION INITIAL STATES & KEYFRAMES
   ========================================================================== */

/* --- Page Loader --- */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    z-index: 9999;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

body.gsap-ready .page-loader {
    display: flex;
}

.loader-text {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 0.2em;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    text-align: center;
}

body.gsap-ready .loader-text {
    animation: loader-title-enter 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes loader-title-enter {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.loader-bar {
    width: 200px;
    height: 2px;
    background-color: var(--color-surface);
    overflow: hidden;
}

.loader-progress {
    width: 0%;
    height: 100%;
    background-color: var(--color-primary);
}

@media (max-width: 600px) {
    .page-loader {
        height: 100vh;
        height: 100dvh;
        padding: 1rem;
    }

    .loader-text {
        box-sizing: border-box;
        width: 100%;
        max-width: 100%;
        padding-inline: 0.5rem;
        font-size: clamp(1.25rem, 7vw, 1.75rem);
        letter-spacing: 0.12em;
        line-height: 1.3;
    }
}

/* --- GSAP Reveal Initial States --- */
body.gsap-ready .reveal-text {
    opacity: 0;
    transform: translateY(40px);
}

body.gsap-ready .reveal-image {
    opacity: 0;
    transform: scale(0.95);
}

/* Classes for scroll animations */
body.gsap-ready .fade-up-text {
    opacity: 0;
    transform: translateY(50px);
}

/* --- Scroll Progress Bar --- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: transparent;
    z-index: 10000;
}

.scroll-progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--color-primary);
}

/* --- Reduced Motion Override --- */
@media (prefers-reduced-motion: reduce) {
    .loader-text {
        animation: none !important;
        opacity: 1;
        transform: none;
    }

    .reveal-text,
    .reveal-image,
    .fade-up-text {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* --- Button Micro-Interactions --- */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn svg {
    transition: transform 0.3s ease;
}

.btn:hover svg {
    transform: translateX(4px);
}

/* --- Image Hover Scale --- */
.trust-img-card img,
.project-card img {
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.trust-img-card:hover img,
.project-card:hover img {
    transform: scale(1.05);
}

/* --- Navigation Link Underline --- */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-text);
    transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* --- Mobile Menu Button Animation --- */
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* --- Floating Animation for Decorative Elements --- */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.float-element {
    animation: float 6s ease-in-out infinite;
}

/* --- Stagger Delays for Lists --- */
.stagger-delay-1 { transition-delay: 0.1s; }
.stagger-delay-2 { transition-delay: 0.2s; }
.stagger-delay-3 { transition-delay: 0.3s; }
.stagger-delay-4 { transition-delay: 0.4s; }