/* 
   GNIT Premium Preloader Styles
   Aesthetic: Futuristic, Modern, Premium
*/

:root {
    --preloader-bg: radial-gradient(circle at center, #0a1e5e 0%, #050a1f 100%);
    --accent-gold: #f4a226;
    --accent-blue: #1e5fa8;
    --text-light: rgba(255, 255, 255, 0.9);
}

#premium-preloader {
    position: fixed;
    inset: 0;
    z-index: 100000;
    background: var(--preloader-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.8s cubic-bezier(0.65, 0, 0.35, 1), visibility 0.8s;
}

#premium-preloader.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    z-index: 2;
}

.preloader-logo-wrap {
    position: relative;
    width: 220px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease forwards 0.2s;
}

.preloader-logo-wrap img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 15px rgba(30, 95, 168, 0.4));
}

.preloader-text {
    color: var(--text-light);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    font-weight: 500;
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.6s;
}

/* Futuristic Loader */
.modern-loader {
    position: relative;
    width: 200px;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.4s;
}

.loader-bar {
    position: absolute;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-gold));
    box-shadow: 0 0 10px var(--accent-blue);
    animation: progress 2.5s cubic-bezier(0.1, 0, 0.2, 1) forwards;
}

/* Interactive Background Particles/Shapes */
.preloader-bg-decor {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(30, 95, 168, 0.1) 0%, transparent 70%);
    filter: blur(40px);
}

.bg-circle-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    left: -100px;
    animation: float 15s infinite alternate;
}

.bg-circle-2 {
    width: 500px;
    height: 500px;
    bottom: -150px;
    right: -150px;
    animation: float 20s infinite alternate-reverse;
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes progress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

@keyframes float {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(40px, 40px) scale(1.1); }
}

/* Transition revealing the page */
.reveal-curtain {
    position: absolute;
    inset: 0;
    background: #fff;
    transform: translateY(100%);
    z-index: 3;
}

/* Custom easing for page entrance */
body.preloader-active {
    overflow: hidden;
}

body.content-reveal #premium-preloader {
    transform: translateY(-100%);
}

@media (max-width: 480px) {
    .preloader-logo-wrap {
        width: 240px;
    }
    .preloader-text {
        font-size: 11px;
        letter-spacing: 2px;
    }
}

/* ============================================================
   Futuristic Page Interactions & Reveal
   These trigger after the preloader fades out
   ============================================================ */

/* Animate main content with a smooth upward slide */
body.page-loaded section, 
body.page-loaded .container:not(.nav-inner):not(.logo-bar-inner),
body.page-loaded footer {
    animation: contentReveal 1.2s cubic-bezier(0.2, 0, 0.2, 1) forwards;
}

/* Animate navigation elements with just opacity to avoid transform context issues 
   (which breaks position: fixed for mega-menus) */
body.page-loaded #top-info-bar,
body.page-loaded #logo-bar,
body.page-loaded #main-nav {
    animation: fadeInOnly 1s ease forwards;
}

@keyframes contentReveal {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInOnly {
    from { opacity: 0; }
    to { opacity: 1; }
}


/* Subtle Hover Glow for Cards/Buttons */
.btn-apply, .btn-admission, .footer-cta-actions a, .card, .mega-col ul li a {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

body.page-loaded .btn-apply:hover, 
body.page-loaded .btn-admission:hover {
    box-shadow: 0 0 20px rgba(30, 95, 168, 0.6);
    transform: translateY(-3px);
}

/* Futuristic Scroll Reveal helper class */
.futuristic-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.2, 0, 0.2, 1);
}

.futuristic-reveal.active {
    opacity: 1;
    transform: translateY(0);
}