:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #0d9488;
    --bg-main: #ffffff;
    --bg-light: #f8fafc;
    --text-dark: #0f172a;
    --text-muted: #475569;
    --border: #e2e8f0;
    --card-bg: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --font-xs: clamp(0.75rem, 1vw, 0.85rem);
    --font-sm: clamp(0.85rem, 1.2vw, 0.95rem);
    --font-base: clamp(1rem, 1.5vw, 1.15rem);
    --font-lg: clamp(1.2rem, 2vw, 1.4rem);
    --font-xl: clamp(1.8rem, 3vw, 2.5rem);
    --font-xxl: clamp(2.5rem, 5vw, 3.8rem);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 15px 30px -5px rgba(0, 0, 0, 0.1);
    --shadow-premium: 0 20px 40px -5px rgba(37, 99, 235, 0.12);
    --transition-smooth: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-fast: 0.2s ease-in-out;
}

[data-theme="dark"] {
    --primary: #3b82f6;
    --bg-main: #0f172a;
    --bg-light: #1e293b;
    --text-dark: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --card-bg: #1e293b;
    --glass-bg: rgba(15, 23, 42, 0.85);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 15px 30px -5px rgba(0, 0, 0, 0.6);
    --shadow-premium: 0 20px 40px -5px rgba(0, 0, 0, 0.8);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--secondary); }
::selection { background: var(--secondary); color: white; }

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    font-family: 'Hind Siliguri', sans-serif; 
}

html, body { 
    max-width: 100vw; 
    overflow-x: hidden !important; 
    scroll-behavior: smooth; 
}

body { 
    background: var(--bg-main); 
    color: var(--text-dark); 
    line-height: 1.7; 
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-smooth), color var(--transition-smooth); 
}

body.menu-open, html.menu-open {
    overflow: hidden;
    height: 100%;
    position: relative;
}

#preloader { 
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; 
    background: var(--bg-main); z-index: 10000; 
    display: flex; justify-content: center; align-items: center; 
    transition: opacity var(--transition-smooth); 
}

.loader { 
    width: 45px; height: 45px; 
    border: 4px solid rgba(37, 99, 235, 0.1); border-top-color: var(--primary); 
    border-radius: 50%; 
    animation: spin 1s linear infinite; 
    will-change: transform;
}

@keyframes spin { to { transform: rotate(360deg); } }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.bg-light { background: var(--bg-light); transition: background-color var(--transition-smooth); }
.text-center { text-align: center; }
.z-index-top { z-index: 10; position: relative; }

h1, h2, h3, h4 { color: var(--text-dark); transition: color var(--transition-smooth); }
p { color: var(--text-muted); font-size: var(--font-base); transition: color var(--transition-smooth); }
a { text-decoration: none; transition: color var(--transition-fast), transform var(--transition-fast); cursor: pointer; }

.highlight { 
    background: linear-gradient(120deg, var(--primary), var(--secondary)); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
}

.btn-primary { 
    background: var(--primary); color: #fff !important; 
    padding: 12px 28px; border-radius: 8px; font-weight: 600; 
    display: inline-flex; align-items: center; gap: 8px; border: none; cursor: pointer; 
    will-change: transform, box-shadow;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast); 
}

.btn-primary:hover { 
    background: var(--primary-hover); 
    transform: translateY(-3px) translateZ(0);
    box-shadow: var(--shadow-md); 
}

.desktop-btn { animation: pulse-shadow 2s infinite; }

@keyframes pulse-shadow { 
    0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); } 
    70% { box-shadow: 0 0 0 15px rgba(37, 99, 235, 0); } 
    100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); } 
}

.btn-outline { 
    background: transparent; color: var(--text-dark) !important; 
    padding: 12px 28px; border-radius: 8px; font-weight: 600; 
    display: inline-flex; align-items: center; gap: 8px; 
    border: 2px solid var(--border); 
    transition: border-color var(--transition-fast), color var(--transition-fast); 
    cursor: pointer; 
}

.btn-outline:hover { border-color: var(--primary); color: var(--primary) !important; }

header { 
    position: fixed; top: 0; width: 100%; z-index: 1000; 
    background: var(--glass-bg); 
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); 
    border-bottom: 1px solid transparent;
    transition: padding var(--transition-smooth), height var(--transition-smooth), box-shadow var(--transition-smooth); 
}

.header-scrolled { padding: 5px 0; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--border); }

nav { display: flex; justify-content: space-between; align-items: center; height: 80px; transition: height var(--transition-smooth); }
.header-scrolled nav { height: 70px; }

.logo { font-size: var(--font-lg); font-weight: 700; display: flex; gap: 6px; align-items: center; }
.custom-logo { height: 42px; width: 42px; border-radius: 50%; object-fit: cover; border: 2px solid var(--bg-main); box-shadow: var(--shadow-sm); }
.logo .siam { color: var(--text-dark); transition: color var(--transition-smooth); }
.logo .shahariar { color: var(--primary); transition: color var(--transition-smooth); }

.nav-links { display: flex; list-style: none; gap: 30px; align-items: center; }
.nav-links a { color: var(--text-muted); font-weight: 600; font-size: var(--font-base); position: relative; padding-bottom: 5px; }
.nav-links a::after { 
    content: ''; position: absolute; width: 0; height: 3px; bottom: 0; left: 0; 
    background-color: var(--primary); border-radius: 2px;
    transition: width var(--transition-fast); 
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a:hover, .nav-links a.active { color: var(--text-dark); }

.nav-badge { 
    background: #ef4444; color: white; font-size: 0.7rem; 
    padding: 2px 8px; border-radius: 12px; position: absolute; 
    top: -15px; right: -20px; font-weight: 700; 
}

.theme-btn { font-size: 1.2rem; color: var(--text-dark); cursor: pointer; transition: transform var(--transition-fast), color var(--transition-fast); }
.theme-btn:hover { transform: rotate(30deg) scale(1.1); color: var(--primary); }

#particles-js { position: relative; width: 100%; background-color: var(--bg-light); overflow: hidden; transition: background-color var(--transition-smooth); }
#particles-js canvas { display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; }

.hero-content { display: flex; align-items: center; min-height: 100vh; padding-top: 80px; gap: 50px; }

.img-wrapper { 
    width: 90% !important; max-width: 400px !important; 
    margin: 0 auto 40px auto !important; 
    border-radius: 24px !important; 
    box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.2) !important; 
    position: relative; z-index: 1; overflow: hidden; 
}
.img-wrapper img { width: 100%; height: auto; display: block; object-fit: cover; }

.floating-box { 
    position: absolute; bottom: -20px !important; left: -20px; 
    width: 85% !important; 
    background: var(--card-bg); color: var(--text-dark); 
    padding: 15px 25px; border-radius: 12px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important; z-index: 2; 
    display: flex; align-items: center; gap: 10px; font-weight: 700; 
    transition: background-color var(--transition-smooth), color var(--transition-smooth); 
}
.floating-box i { color: #10b981; font-size: 1.2rem; }

.hero-text-area { flex: 1.2; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; background: rgba(37, 99, 235, 0.1); color: var(--primary); border-radius: 30px; font-weight: 700; font-size: var(--font-sm); margin-bottom: 20px; border: 1px solid var(--border); }
.hero h1 { font-size: var(--font-xxl); margin-bottom: 20px; font-weight: 700; line-height: 1.2; }
.hero-desc { font-size: var(--font-base); margin-bottom: 30px; max-width: 90%; }
.hero-buttons { display: flex; gap: 15px; margin-bottom: 30px; }
.quote { font-style: italic; border-left: 3px solid var(--primary); padding-left: 15px; font-size: var(--font-base); color: var(--text-muted); }
.hero-image { flex: 1; position: relative; display: flex; justify-content: center; }

.marquee-wrapper { background: var(--primary); color: white; padding: 12px 0; overflow: hidden; display: flex; align-items: center; }
.marquee { display: flex; white-space: nowrap; font-weight: 600; font-size: var(--font-base); animation: marquee 20s linear infinite; will-change: transform; }
.marquee span { padding-right: 50px; }

@keyframes marquee { 
    0% { transform: translate3d(0, 0, 0); } 
    100% { transform: translate3d(-50%, 0, 0); } 
}

section { padding: 90px 0; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-title { font-size: var(--font-xl); margin-bottom: 15px; position: relative; display: inline-block; }
.section-title::after { content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); width: 60px; height: 4px; background: var(--primary); border-radius: 2px; }

.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
.stat-card { 
    background: var(--card-bg); padding: 40px 20px; border-radius: 16px; border: 1px solid var(--border); 
    box-shadow: var(--shadow-sm); 
    will-change: transform, box-shadow;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth), background-color var(--transition-smooth); 
}
.stat-card:hover { transform: translateY(-8px) translateZ(0); box-shadow: var(--shadow-premium); border-color: var(--primary); }
.stat-card i { font-size: 2.5rem; color: var(--primary); margin-bottom: 15px; }
.stat-card h2 { font-size: var(--font-xl); display: inline-block; color: var(--text-dark); margin: 0; }
.stat-card span { font-size: var(--font-xl); font-weight: bold; color: var(--primary); }

.about-content { background: var(--card-bg); padding: 50px; border-radius: 20px; box-shadow: var(--shadow-md); border: 1px solid var(--border); font-size: var(--font-base); text-align: justify; transition: background-color var(--transition-smooth), border-color var(--transition-smooth); }

.courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.course-card { 
    background: var(--card-bg); padding: 40px 30px; border-radius: 16px; border: 1px solid var(--border); 
    display: flex; flex-direction: column; position: relative; 
    will-change: transform, box-shadow;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth), background-color var(--transition-smooth); 
}
.course-card:hover { transform: translateY(-8px) translateZ(0); box-shadow: var(--shadow-premium); border-color: var(--primary); }
.course-icon { 
    width: 65px; height: 65px; background: rgba(37, 99, 235, 0.1); color: var(--primary); 
    border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; margin-bottom: 25px; 
    transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast); 
}
.course-card:hover .course-icon { background: var(--primary); color: white; transform: scale(1.1); }
.course-card h3 { font-size: var(--font-lg); margin-bottom: 15px; color: var(--text-dark); }
.course-card p { margin-bottom: 25px; flex-grow: 1; color: var(--text-muted); }

.popular-badge { 
    position: absolute; top: 20px; right: 20px; background: linear-gradient(120deg, #f59e0b, #ef4444); color: white; 
    padding: 5px 15px; border-radius: 20px; font-size: var(--font-sm); font-weight: 700; 
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.3); z-index: 2; 
}

.masonry-gallery { columns: 3 320px; column-gap: 24px; width: 100%; }
.gallery-card { 
    background: var(--card-bg); border-radius: 16px; overflow: hidden; position: relative; margin-bottom: 24px; 
    break-inside: avoid; box-shadow: var(--shadow-sm); border: 1px solid var(--border); cursor: pointer; 
    will-change: transform, box-shadow;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth); 
}
.gallery-card img { 
    width: 100%; height: auto; display: block; filter: grayscale(15%) brightness(95%); 
    will-change: transform, filter;
    transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1), filter var(--transition-smooth); 
}
.card-overlay { 
    position: absolute; inset: 0; 
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, rgba(15, 23, 42, 0) 100%); 
    display: flex; justify-content: center; align-items: flex-end; padding: 30px; opacity: 0; 
    transition: opacity var(--transition-smooth); z-index: 2; 
}
.overlay-content h3, .overlay-content p, .overlay-content i { 
    transform: translateY(30px); opacity: 0; 
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease; 
}
.overlay-content h3 { transition-delay: 0.05s; color: #ffffff; font-size: var(--font-lg); }
.overlay-content p { transition-delay: 0.1s; color: rgba(248, 250, 252, 0.8) !important; font-size: var(--font-sm); }
.overlay-content i { 
    transition-delay: 0.15s; font-size: 1.3rem; color: white; background: var(--primary); 
    width: 45px; height: 45px; display: flex; justify-content: center; align-items: center; 
    border-radius: 50%; margin: 15px auto 0; box-shadow: var(--shadow-md); 
}

.gallery-card:hover { transform: translateY(-8px) translateZ(0); box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25); border-color: var(--primary); }
.gallery-card:hover img { transform: scale(1.06) rotate(0.5deg); filter: grayscale(0%) brightness(105%); }
.gallery-card:hover .card-overlay { opacity: 1; }
.gallery-card:hover .overlay-content h3, .gallery-card:hover .overlay-content p, .gallery-card:hover .overlay-content i { transform: translateY(0); opacity: 1; }

.gallery-card-hide { opacity: 0; transform: scale(0.9) translateY(40px); transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.gallery-card-show { opacity: 1; transform: scale(1) translateY(0); }

.lightbox { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); }
.lightbox-img { margin: auto; display: block; max-width: 90%; max-height: 85vh; border-radius: 8px; position: relative; top: 50%; transform: translateY(-50%); animation: zoomIn 0.3s ease; }
.close-btn { position: absolute; top: 20px; right: 35px; color: white; font-size: 40px; cursor: pointer; transition: color var(--transition-fast); z-index: 2001; }
.close-btn:hover { color: #ef4444; }

.contact-wrapper { 
    display: grid; grid-template-columns: 1fr 1fr; gap: 50px; 
    background: var(--card-bg); padding: 50px; border-radius: 20px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); 
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth); 
}
.contact-info h3 { font-size: var(--font-xl); margin-bottom: 20px; }
.contact-info p { margin-bottom: 15px; display: flex; align-items: center; gap: 10px; font-weight: 500; }
.contact-info i { color: var(--primary); font-size: 1.2rem; }
.social-links { display: flex; gap: 15px; margin-top: 30px; }
.social-links a { 
    width: 45px; height: 45px; background: rgba(37, 99, 235, 0.1); color: var(--primary); 
    display: flex; justify-content: center; align-items: center; border-radius: 50%; font-size: 1.2rem; 
    transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast); 
}
.social-links a:hover { background: var(--primary); color: white; transform: translateY(-3px) translateZ(0); }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.contact-form input, .contact-form textarea { 
    width: 100%; padding: 15px; border: 1px solid var(--border); border-radius: 8px; font-size: var(--font-base); 
    background: var(--bg-light); color: var(--text-dark); 
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-smooth), color var(--transition-smooth); 
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); background: var(--card-bg); }
.contact-form textarea { height: 150px; resize: vertical; }

footer { background: #0f172a; color: white; text-align: center; padding: 30px 0; }

.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1), transform 0.8s cubic-bezier(0.5, 0, 0, 1); will-change: opacity, transform; }
.reveal.active { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.2s; }
.page-transition { animation: fadeIn 0.6s ease forwards; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@keyframes zoomIn { from { transform: translateY(-50%) scale(0.8); opacity: 0; } to { transform: translateY(-50%) scale(1); opacity: 1; } }

[data-theme="dark"] div[style*="background: white"], 
[data-theme="dark"] section[style*="background: white"], 
[data-theme="dark"] section[style*="background: white;"] { 
    background: var(--bg-main) !important; color: var(--text-dark) !important; 
}

.premium-sub-card { 
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%); border-radius: 30px; padding: 70px 40px; text-align: center; 
    position: relative; overflow: hidden; box-shadow: 0 25px 50px -12px rgba(30, 58, 138, 0.5); border: 1px solid rgba(255, 255, 255, 0.1); 
}
.premium-sub-card h2 { color: white !important; font-size: var(--font-xxl); margin-bottom: 15px; font-weight: 700; letter-spacing: -1px; }
.premium-sub-card p { color: #cbd5e1 !important; font-size: var(--font-base); max-width: 550px; margin: 0 auto 40px; line-height: 1.6; }

form.premium-sub-form { display: flex; flex-direction: row !important; max-width: 550px; margin: 0 auto; background: white !important; padding: 8px !important; border-radius: 50px !important; box-shadow: 0 15px 35px rgba(0,0,0,0.2) !important; }
form.premium-sub-form input { flex: 1; padding: 15px 25px !important; border-radius: 40px !important; border: none !important; background: transparent !important; color: #0f172a !important; font-size: var(--font-base) !important; outline: none; box-shadow: none !important; }
form.premium-sub-form button { background: var(--primary) !important; color: white !important; border: none; font-weight: 700; padding: 0 35px !important; border-radius: 40px !important; cursor: pointer; transition: transform var(--transition-fast), box-shadow var(--transition-fast); box-shadow: 0 4px 15px rgba(37,99,235,0.4); font-size: var(--font-base); display: flex; align-items: center; gap: 8px; justify-content: center; width: auto !important; }
form.premium-sub-form button:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.6); }

.mobile-btn { display: none; }
.menu-toggle { display: none; flex-direction: column; gap: 6px; z-index: 1001; cursor: pointer; }
.menu-toggle span { width: 28px; height: 3px; background: var(--text-dark); border-radius: 3px; transition: transform var(--transition-smooth), opacity var(--transition-smooth), background-color var(--transition-smooth); }
.menu-toggle.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); background: #ef4444; }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); background: #ef4444; }

@media (max-width: 1100px) {
    .nav-links { gap: 15px; }
    .desktop-btn { padding: 10px 20px; font-size: 0.9rem; }
}

@media (max-width: 850px) {
    .hero-content { flex-direction: column; text-align: center; min-height: auto; padding: 160px 0 100px 0; gap: 30px; }
    .hero-buttons { justify-content: center; }
    .img-wrapper { width: 100%; max-width: 450px !important; margin: 0 auto; }
    .floating-box { left: 50%; transform: translateX(-50%); width: max-content; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .masonry-gallery { columns: 2 280px; }
}

@media (max-width: 768px) {
    * { cursor: auto !important; }
    .cursor-dot, .cursor-outline { display: none !important; }
    .menu-toggle { display: flex; }
    
    .nav-links { 
        position: fixed; top: 0; right: auto !important; left: 0 !important; width: 100%; height: 100vh; 
        background: rgba(15, 23, 42, 0.95); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
        flex-direction: column; justify-content: center; align-items: center; 
        padding: 0; box-shadow: none; transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important; gap: 35px; z-index: 1000;
        overflow-y: auto; 
        -webkit-overflow-scrolling: touch; 
    }
    
    .nav-links.active { transform: translateX(0); }
    .nav-links a { font-size: var(--font-xl); color: #f8fafc; font-weight: 700; }
    .nav-links a:hover, .nav-links a.active { color: #3b82f6; }
    .nav-links a::after { display: none; }
    
    .nav-badge { position: absolute; top: -10px; right: -35px; font-size: 0.75rem; }
    
    .desktop-btn { display: none; }
    .mobile-btn { display: flex; width: 80%; justify-content: center; margin-top: 20px; }
    
    .nav-links.active ~ .menu-toggle span { background: #ffffff; }
    
    .theme-btn { 
        color: #f8fafc !important; font-size: 1.6rem; margin-top: 15px; padding: 10px; 
        border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 50%; 
        width: 50px; height: 50px; display: flex; justify-content: center; align-items: center; 
        background: rgba(255, 255, 255, 0.05); 
    }
    .theme-btn:hover { color: #3b82f6 !important; background: rgba(255, 255, 255, 0.1); }
    
    .hero-content { min-height: auto; padding-top: 110px; padding-bottom: 40px; }
    .floating-box { bottom: -15px; width: 90%; justify-content: center; padding: 12px 15px; }
    
    section { padding: 60px 0; }
    .stats-grid, .courses-grid { grid-template-columns: 1fr; gap: 20px; }
    .course-card, .stat-card { padding: 25px 20px; }
    .about-content { padding: 30px 20px; }
    .contact-wrapper { padding: 30px 20px; gap: 30px; }
    
    .masonry-gallery { 
        display: flex !important; flex-direction: row !important; overflow-x: auto !important; 
        scroll-snap-type: x mandatory !important; scroll-behavior: smooth; gap: 15px !important; 
        padding-bottom: 20px; -webkit-overflow-scrolling: touch; scrollbar-width: none; 
    }
    .masonry-gallery::-webkit-scrollbar { display: none; }
    .gallery-card { 
        width: 280px !important; min-width: 280px !important; height: 340px !important; 
        scroll-snap-align: center !important; margin-bottom: 0 !important; flex-shrink: 0; 
        border-radius: 16px !important; transform: scale(0.88) !important; opacity: 0.5; 
    }
    .gallery-card img { height: 100% !important; width: 100% !important; object-fit: cover !important; }
    
    .gallery-card.active-snap { 
        transform: scale(1) !important; opacity: 1; 
        box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.4) !important; border-color: var(--primary) !important; z-index: 10; 
    }
    .gallery-card.active-snap img { filter: grayscale(0%) brightness(105%); }
    .gallery-card.active-snap .card-overlay { opacity: 1; }
    .gallery-card.active-snap .overlay-content h3, .gallery-card.active-snap .overlay-content p, .gallery-card.active-snap .overlay-content i { transform: translateY(0); opacity: 1; }
    
    div[style*="text-align: center; margin-bottom: 40px;"] { display: flex !important; flex-wrap: wrap !important; justify-content: center !important; gap: 10px !important; margin-bottom: 30px !important; }
    div[style*="text-align: center; margin-bottom: 40px;"] button { margin: 0 !important; flex: 1 1 calc(33% - 10px) !important; min-width: 110px; padding: 8px 10px !important; }
    
    .premium-sub-card { padding: 40px 20px; border-radius: 20px; }
    form.premium-sub-form { flex-direction: column !important; background: transparent !important; box-shadow: none !important; padding: 0 !important; gap: 15px !important; border-radius: 0 !important; }
    form.premium-sub-form input { background: white !important; border-radius: 12px !important; text-align: center; box-shadow: 0 4px 15px rgba(0,0,0,0.1) !important; }
    form.premium-sub-form button { border-radius: 12px !important; padding: 15px !important; width: 100% !important; }
}

@media (max-width: 380px) {
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons a { width: 100%; justify-content: center; }
}

#custom-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(37, 99, 235, 0.9);
    color: white;
    padding: 15px 25px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

#custom-toast.show {
    transform: translateX(0);
}