/* ============================================
   GREENFIELD ENGLISH SCHOOL — CUSTOM STYLES
   ============================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: #ffffff; color: #1f2937; overflow-x: hidden; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #0aa164; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #0b7f52; }

/* Marquee */
.marquee-track { display: flex; animation: marquee 30s linear infinite; width: max-content; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Hero Overlay */
.hero-overlay { background: linear-gradient(135deg, rgba(10,161,100,0.85) 0%, rgba(15,18,37,0.9) 50%, rgba(9,11,24,0.95) 100%); }

/* Float */
.float-animation { animation: float 6s ease-in-out infinite; will-change: transform; }
@keyframes float { 0%, 100% { transform: translateY(0px); } 50% { transform: translateY(-12px); } }

/* ===== SCROLL REVEAL ===== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-60px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(60px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-right.active { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.85); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal-scale.active { opacity: 1; transform: scale(1); }

.stagger-children .reveal:nth-child(1) { transition-delay: 0ms; }
.stagger-children .reveal:nth-child(2) { transition-delay: 100ms; }
.stagger-children .reveal:nth-child(3) { transition-delay: 200ms; }
.stagger-children .reveal:nth-child(4) { transition-delay: 300ms; }
.stagger-children .reveal:nth-child(5) { transition-delay: 400ms; }
.stagger-children .reveal:nth-child(6) { transition-delay: 500ms; }

.counter-value { display: inline-block; }

/* ===== CARDS ===== */
.feature-card { transition: transform 0.4s cubic-bezier(0.16,1,0.3,1), box-shadow 0.4s ease; }
.feature-card:hover { transform: translateY(-8px); box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15); }
.facility-card { transition: transform 0.4s cubic-bezier(0.16,1,0.3,1), box-shadow 0.4s ease; }
.facility-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -12px rgba(0,0,0,0.18); }

/* ===== GALLERY — native aspect-ratio (supported in all modern browsers) ===== */
.gallery-item {
    overflow: hidden;
    border-radius: 1rem;
    cursor: pointer;
    position: relative;
    aspect-ratio: 1 / 1; /* Square by default */
}
.gallery-item.row-span-2 {
    aspect-ratio: 1 / 2; /* Tall items */
}
.gallery-item img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;  /* Never stretch — always crop to fit */
    object-position: center;
    transition: transform 0.7s cubic-bezier(0.16,1,0.3,1);
    will-change: transform;
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item .gallery-overlay { opacity: 0; transition: opacity 0.4s ease; }
.gallery-item:hover .gallery-overlay { opacity: 1; }

/* Lightbox */
.lightbox { opacity: 0; visibility: hidden; transition: opacity 0.4s ease, visibility 0.4s ease; }
.lightbox.open { opacity: 1; visibility: visible; }

/* Achievement Shine */
.achievement-card { position: relative; overflow: hidden; }
.achievement-card::before { content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); transition: left 0.6s ease; z-index: 1; }
.achievement-card:hover::before { left: 100%; }

/* ===== NAVIGATION ===== */
.nav-link { position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: #0aa164; transition: width 0.3s ease; }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* Mobile Menu */
.mobile-menu { transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.16,1,0.3,1); }
.mobile-menu.open { transform: translateX(0); }

/* Pulse */
.pulse-ring { animation: pulseRing 2s ease-out infinite; }
@keyframes pulseRing { 0% { transform: scale(1); opacity: 0.6; } 100% { transform: scale(1.4); opacity: 0; } }

/* Testimonial Slider */
.testimonial-track { transition: transform 0.6s cubic-bezier(0.16,1,0.3,1); }

/* Toast */
.toast { transform: translateY(100px); opacity: 0; transition: all 0.4s cubic-bezier(0.16,1,0.3,1); }
.toast.show { transform: translateY(0); opacity: 1; }

/* Back to Top */
.back-to-top { opacity: 0; visibility: hidden; transform: translateY(20px); transition: all 0.3s ease; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* Gradient Text */
.gradient-text { background: linear-gradient(135deg, #0aa164, #16c47d, #3dde9a); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* Section Divider */
.section-divider { width: 60px; height: 4px; background: linear-gradient(90deg, #0aa164, #3dde9a); border-radius: 2px; }

/* Sticky Header */
.header-scrolled { background: rgba(255,255,255,0.97) !important; box-shadow: 0 4px 30px rgba(0,0,0,0.08); backdrop-filter: blur(20px); }

/* Form Input Focus */
.form-input:focus { border-color: #0aa164; box-shadow: 0 0 0 3px rgba(10,161,100,0.1); }
.form-input.input-error { border-color: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }

/* Academic Tabs */
.tab-btn { transition: all 0.3s ease; }
.tab-btn.active { background: #0aa164; color: white; }

/* ===== TEXTAREA RESIZE ARROW ===== */
.textarea-resizable {
    resize: vertical;
    min-height: 80px;
    max-height: 200px;
}

/* ===== DESKTOP SIDE SOCIAL BAR ===== */
.side-social-bar {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 45;
    flex-direction: column;
    gap: 0;
    border-radius: 12px 0 0 12px;
    overflow: hidden;
    box-shadow: -4px 0 20px rgba(0,0,0,0.15);
}

.side-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.side-social-btn:last-child { border-bottom: none; }
.side-social-btn:hover { transform: scale(1.1); }

/* ===== TRANSITION DELAY UTILITIES (replaces inline style="transition-delay:Xms") ===== */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Print */
@media print {
    .no-print { display: none !important; }
    /* School contact info printed at top of page */
    body::before {
        content: "Greenfield English School  |  info@greenfieldschool.edu.in  |  +91 12345 67890";
        display: block;
        text-align: center;
        font-size: 11px;
        padding: 8px;
        border-bottom: 1px solid #ccc;
        margin-bottom: 16px;
        font-family: 'Inter', sans-serif;
    }
}

/* Mobile overrides */
@media (max-width: 640px) {
    .side-social-bar { display: none !important; }
}