/* ============================================================
   NiiTA – Main Stylesheet
   ============================================================ */

:root {
    --primary-color: #0D6EFD;
    --secondary-color: #FFFFFF;
    --accent-color: #EAF4FF;
    --dark-color: #1E293B;
    --text-muted: #64748B;
    --gradient-primary: linear-gradient(135deg, #0D6EFD 0%, #0a58ca 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-md: 12px;
    --radius-lg: 24px;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--secondary-color);
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ── Page Routing ── */
.page-view { display: none; animation: fadeInPage 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards; flex: 1; }
.page-view.active-page { display: block; }

@keyframes fadeInPage {
    from { opacity: 0; transform: translateY(15px); }
    to   { opacity: 1; transform: translateY(0); }
}

section { padding: 100px 5%; }
.page-content-padding { padding-top: 140px; }

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 28px; border-radius: 50px; font-weight: 600;
    font-size: 0.95rem; cursor: pointer; transition: var(--transition);
    gap: 8px; border: 2px solid transparent;
}
.btn-primary {
    background: var(--gradient-primary); color: var(--secondary-color);
    box-shadow: 0 4px 14px rgba(13, 110, 253, 0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(13, 110, 253, 0.6); }
.btn-outline { background: transparent; border-color: var(--secondary-color); color: var(--secondary-color); }
.btn-outline:hover { background: var(--secondary-color); color: var(--primary-color); transform: translateY(-3px); }

/* ── Section Title ── */
.section-title {
    text-align: center; font-size: 2.5rem; font-weight: 700;
    margin-bottom: 50px; position: relative;
}
.section-title::after {
    content: ''; display: block; width: 60px; height: 4px;
    background: var(--primary-color); margin: 15px auto 0; border-radius: 2px;
}

/* ── Navbar ── */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%;
    padding: 25px 5%; display: flex; justify-content: space-between;
    align-items: center; z-index: 1000; transition: var(--transition);
}
.navbar.solid-nav,
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 15px 5%;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}
.navbar.solid-nav .logo,
.navbar.solid-nav .nav-links a,
.navbar.scrolled .logo,
.navbar.scrolled .nav-links a { color: var(--dark-color); }

.logo {
    font-size: 1.5rem; font-weight: 700; color: var(--secondary-color);
    display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.logo-img { width: 32px; height: 32px; object-fit: contain; }

.nav-links { display: flex; gap: 35px; align-items: center; }
.nav-links a {
    color: var(--secondary-color); font-weight: 500; font-size: 0.95rem; position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -5px; left: 0;
    width: 0; height: 2px; background: var(--primary-color); transition: var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--primary-color) !important; }

/* WhatsApp — single button */
.wa-menu { color: #25D366 !important; font-weight: 600; }
.wa-menu:hover { color: #128C7E !important; }

/* WhatsApp — dropdown */
.wa-dropdown-wrapper { position: relative; display: inline-block; }
.wa-dropdown-btn {
    color: #25D366 !important;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    border: none;
    background: none;
    font-size: 0.95rem;
    font-family: 'Poppins', sans-serif;
    padding: 0;
}
.wa-dropdown-btn:hover { color: #128C7E !important; }
.wa-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-width: 220px;
    padding: 8px 0;
    z-index: 2000;
    border: 1px solid rgba(0,0,0,0.06);
    margin-top: 8px;
    animation: fadeInPage 0.25s ease;
}
.wa-dropdown-menu.open { display: block; }
.wa-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    color: var(--dark-color) !important;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s;
}
.wa-dropdown-menu a:hover { background: var(--accent-color); color: var(--primary-color) !important; }
.wa-dropdown-menu a i { color: #25D366; font-size: 1.1rem; }

.menu-btn { display: none; color: var(--secondary-color); font-size: 1.5rem; cursor: pointer; }
.navbar.solid-nav .menu-btn,
.navbar.scrolled .menu-btn { color: var(--dark-color); }

/* ── Language Switcher ── */
.lang-switcher {
    position: relative;
    display: inline-block;
}
.lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50px;
    padding: 6px 14px 6px 8px;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary-color);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}
.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}
.navbar.solid-nav .lang-btn,
.navbar.scrolled .lang-btn {
    background: rgba(13, 110, 253, 0.05);
    border-color: rgba(13, 110, 253, 0.15);
    color: var(--dark-color);
}
.navbar.solid-nav .lang-btn:hover,
.navbar.scrolled .lang-btn:hover {
    background: rgba(13, 110, 253, 0.1);
    border-color: var(--primary-color);
}

.lang-flag-container {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
    border: 1.5px solid rgba(255,255,255,0.8);
    transition: var(--transition);
}
.navbar.solid-nav .lang-flag-container,
.navbar.scrolled .lang-flag-container {
    border-color: rgba(13,110,253,0.3);
}
.lang-flag-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.15); /* slight zoom to crop rectangular flags into perfect circles */
}

.lang-chevron {
    font-size: 0.65rem;
    opacity: 0.8;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Language Change Transition ── */
[data-i18n], [data-i18n-id] {
    transition: opacity 0.15s ease;
}

.lang-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.05);
    min-width: 170px;
    padding: 8px;
    z-index: 3000;
    border: 1px solid rgba(255, 255, 255, 0.4);
    transform-origin: top right;
}
.lang-dropdown.open {
    display: block;
    animation: slideDownIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideDownIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 8px 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--dark-color);
    text-align: left;
    border-radius: 8px;
    transition: var(--transition);
}
.lang-option:hover {
    background: rgba(13, 110, 253, 0.08);
    color: var(--primary-color);
}
.lang-option:hover .lang-flag-container {
    transform: scale(1.1);
    border-color: var(--primary-color);
}
.lang-option.active {
    background: rgba(13, 110, 253, 0.12);
    color: var(--primary-color);
    font-weight: 600;
}
.lang-option.active .lang-flag-container {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(13, 110, 253, 0.25);
}


/* ── Hero ── */
.hero {
    position: relative; height: 100vh; display: flex;
    align-items: center; justify-content: center;
    text-align: center; color: var(--secondary-color); overflow: hidden;
}
.hero-slider {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
}
.hero-slide {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover; background-position: center;
    opacity: 0;
    transform: scale(1.05);
    transition: opacity 2.5s ease-in-out, transform 8s ease-out;
}
.hero-slide.active {
    opacity: 1;
    transform: scale(1.0);
}

/* Arrows */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--secondary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}
.hero-arrow:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
    border-color: var(--secondary-color);
    transform: translateY(-50%) scale(1.1);
}
.hero-arrow-prev {
    left: 30px;
}
.hero-arrow-next {
    right: 30px;
}

/* Dots Indicator */
.hero-dots {
    position: absolute;
    bottom: 35px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}
.hero-dot.active {
    background: var(--secondary-color);
    transform: scale(1.2);
}

.hero-content { max-width: 850px; padding: 0 20px; }
.hero h1 { font-size: 4rem; font-weight: 700; line-height: 1.2; margin-bottom: 20px; letter-spacing: -1px; }
.hero p { font-size: 1.25rem; margin-bottom: 40px; opacity: 0.9; font-weight: 300; }
.hero-ctas { display: flex; justify-content: center; gap: 20px; }

/* ── Stats ── */
.stats {
    background: var(--gradient-primary); color: var(--secondary-color);
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 30px; text-align: center; padding: 80px 5%;
}
.stat-item h3 { font-size: 3.5rem; font-weight: 700; margin-bottom: 5px; }
.stat-item p { font-size: 1.1rem; opacity: 0.9; font-weight: 500; }

/* ── About ── */
.about {
    display: flex; flex-direction: column; align-items: center;
    text-align: center; max-width: 1000px; margin: 0 auto;
    gap: 40px; background-color: var(--secondary-color); padding: 40px 20px;
}
.about-img { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); width: 100%; max-width: 800px; }
.about-img img { width: 100%; object-fit: cover; height: 400px; }
.about-content { width: 100%; max-width: 800px; }
.about-content h2 { font-size: 2.5rem; font-weight: 700; margin-bottom: 20px; color: var(--dark-color); }
.about-content .story { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 40px; }
.vision-mission { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; }
.vm-card {
    background: var(--accent-color);
    padding: 30px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    text-align: left;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.vm-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.vm-card h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    font-weight: 600;
}
.vm-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-line;
}

/* ── Programs ── */
.programs { background-color: var(--accent-color); }
.programs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; }
.program-card {
    background: var(--secondary-color); padding: 40px 30px;
    border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
    transition: var(--transition); position: relative; overflow: hidden;
}
.program-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
    background: var(--primary-color); transform: scaleX(0); transition: var(--transition);
}
.program-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.program-card:hover::before { transform: scaleX(1); }
.program-icon {
    width: 70px; height: 70px; background: var(--accent-color);
    border-radius: var(--radius-md); display: flex; align-items: center;
    justify-content: center; font-size: 1.8rem; color: var(--primary-color); margin-bottom: 25px;
}
.program-card h3 { font-size: 1.4rem; margin-bottom: 15px; }
.program-card p { color: var(--text-muted); }

/* ── Gallery ── */
.gallery-grid { columns: 3 300px; column-gap: 20px; }
.gallery-item {
    margin-bottom: 20px; break-inside: avoid; border-radius: var(--radius-md);
    overflow: hidden; position: relative; cursor: pointer; box-shadow: var(--shadow-sm);
}
.gallery-item img { width: 100%; transition: var(--transition); }
.gallery-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(13, 110, 253, 0.8); display: flex; align-items: center;
    justify-content: center; opacity: 0; transition: var(--transition);
    color: var(--secondary-color); font-size: 1.5rem;
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item:hover .gallery-overlay { opacity: 1; }

/* ── Lightbox ── */
.lightbox {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.95); z-index: 2000; display: flex;
    align-items: center; justify-content: center; opacity: 0;
    pointer-events: none; transition: var(--transition);
}
.lightbox.active { opacity: 1; pointer-events: auto; }
.lightbox-img { max-width: 85%; max-height: 85%; border-radius: var(--radius-md); transform: scale(0.9); transition: var(--transition); }
.lightbox.active .lightbox-img { transform: scale(1); }
.lightbox-close { position: absolute; top: 30px; right: 40px; color: var(--secondary-color); font-size: 2.5rem; cursor: pointer; }

/* ── Footer ── */
footer { background: #0F172A; color: #94A3B8; padding: 80px 5% 30px; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 50px; margin-bottom: 60px; }
.footer-col h3 { color: var(--secondary-color); font-size: 1.4rem; margin-bottom: 25px; }
.footer-col p { margin-bottom: 20px; }
.social-icons { display: flex; gap: 15px; }
.social-icons a {
    width: 40px; height: 40px; background: rgba(255, 255, 255, 0.05);
    border-radius: 50%; display: flex; align-items: center;
    justify-content: center; color: var(--secondary-color);
}
.social-icons a:hover { background: var(--primary-color); transform: translateY(-3px); }
.footer-links { display: flex; flex-direction: column; }
.footer-links li { margin-bottom: 12px; }
.footer-links a:hover { color: var(--secondary-color); padding-left: 5px; }
.contact-info li { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; }
.contact-info i { color: var(--primary-color); }
.copyright { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.05); font-size: 0.9rem; }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .hero h1 { font-size: 3rem; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .programs-grid { grid-template-columns: 1fr 1fr; }
    .vision-mission { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-ctas { flex-direction: column; align-items: center; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .programs-grid { grid-template-columns: 1fr; }
    .gallery-grid { columns: 2 200px; }
    .footer-grid { grid-template-columns: 1fr; }
    .nav-links {
        display: none; flex-direction: column;
        position: absolute; top: 100%; left: 0; right: 0;
        background: rgba(255, 255, 255, 0.98);
        padding: 20px 5%; gap: 15px; box-shadow: var(--shadow-md);
    }
    .nav-links.active { display: flex; }
    .nav-links a { color: var(--dark-color) !important; }
    .menu-btn { display: block; }
    .wa-dropdown-menu { right: auto; left: 0; }
}
@media (max-width: 480px) {
    .section-title { font-size: 1.8rem; }
    .stats { grid-template-columns: 1fr 1fr; }
    .gallery-grid { columns: 1; }
}