:root {
    --green-50: #f0fdf4; --green-100: #dcfce7; --green-200: #bbf7d0;
    --green-300: #86efac; --green-400: #4ade80; --green-500: #22c55e;
    --green-600: #16a34a; --green-700: #15803d; --green-800: #166534;
    --green-900: #14532d; --green-950: #052e16;
    --white: #ffffff; --off-white: #f8fafc;
    --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb;
    --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280;
    --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937;
    --gray-900: #111827;
    --red-500: #ef4444; --red-600: #dc2626;
    --orange-500: #f97316;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --shadow-green: 0 4px 14px rgba(34,197,94,0.25);
    --radius-sm: 6px; --radius: 10px; --radius-lg: 14px; --radius-xl: 20px;
    --radius-full: 9999px;
    --transition: all 0.2s ease;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
    font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
    background:var(--off-white);color:var(--gray-800);
    line-height:1.6;-webkit-font-smoothing:antialiased
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.container-sm{max-width:800px;margin:0 auto;padding:0 20px}

/* Navbar */
.navbar{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(34,197,94,0.1);padding:0;
    transition:var(--transition)
}
.navbar.scrolled{box-shadow:var(--shadow-md)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:1.4rem;font-weight:800;color:var(--gray-900)}
.logo i{font-size:1.6rem;color:var(--green-500)}
.logo span{color:var(--green-600)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{text-decoration:none;color:var(--gray-600);font-weight:500;font-size:.9rem;transition:var(--transition)}
.nav-links a:hover{color:var(--green-600)}
.btn{
    display:inline-flex;align-items:center;gap:8px;padding:10px 20px;
    border-radius:var(--radius-full);font-weight:600;font-size:.9rem;
    text-decoration:none;cursor:pointer;border:none;transition:var(--transition);
    white-space:nowrap
}
.btn-primary{background:var(--green-500);color:#fff}
.btn-primary:hover{background:var(--green-600);transform:translateY(-1px);box-shadow:var(--shadow-green)}
.btn-outline{background:transparent;border:2px solid var(--green-500);color:var(--green-600)}
.btn-outline:hover{background:var(--green-500);color:#fff}
.btn-white{background:#fff;color:var(--green-700);box-shadow:var(--shadow-sm)}
.btn-white:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.btn-lg{padding:14px 28px;font-size:1rem}
.btn-sm{padding:8px 16px;font-size:.8rem}
.btn-danger{background:var(--red-500);color:#fff}
.btn-danger:hover{background:var(--red-600)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.mobile-toggle span{width:24px;height:2.5px;background:var(--gray-700);border-radius:2px;transition:var(--transition)}

/* Hero */
.hero{padding:120px 0 80px;position:relative;overflow:hidden}
.hero::before{
    content:'';position:absolute;top:-300px;right:-300px;width:700px;height:700px;
    border-radius:50%;background:radial-gradient(circle,rgba(34,197,94,0.06) 0%,transparent 70%)
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;position:relative;z-index:1}
.hero-text h1{font-size:clamp(2.2rem,5vw,3.2rem);font-weight:900;line-height:1.15;color:var(--gray-900);margin-bottom:18px;letter-spacing:-1px}
.hero-text h1 .hl{color:var(--green-500)}
.hero-text p{font-size:1.1rem;color:var(--gray-500);margin-bottom:28px;max-width:460px;line-height:1.7}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{display:flex;justify-content:center}
.phone-mockup{
    width:260px;height:520px;background:var(--gray-900);border-radius:36px;
    padding:14px;box-shadow:0 0 0 6px var(--gray-800),0 0 0 8px var(--green-500),var(--shadow-xl)
}
.phone-screen{
    width:100%;height:100%;background:linear-gradient(160deg,#052e16,#166534);
    border-radius:24px;display:flex;flex-direction:column;align-items:center;
    justify-content:center;color:#fff
}
.phone-screen i{font-size:4.5rem;color:var(--green-400);margin-bottom:12px;animation:float 3s ease-in-out infinite}
.phone-screen span{font-size:.85rem;letter-spacing:2px;text-transform:uppercase;color:var(--green-300)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* Badge */
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--green-100);color:var(--green-700);padding:5px 12px;border-radius:var(--radius-full);font-size:.78rem;font-weight:600;margin-bottom:14px}
.badge-dot{width:7px;height:7px;background:var(--green-500);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* Sections */
.section{padding:80px 0}
.section-dark{background:var(--gray-900);color:#fff}
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:800;color:var(--gray-900);margin-bottom:10px;letter-spacing:-.5px}
.section-dark .section-header h2{color:#fff}
.section-header p{color:var(--gray-500);font-size:1.05rem}
.section-dark .section-header p{color:var(--gray-400)}

/* Cards */
.card{background:var(--white);border-radius:var(--radius-lg);padding:28px;border:1px solid var(--gray-100);transition:var(--transition)}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}

/* Download Cards */
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.download-card{background:var(--white);border-radius:var(--radius-xl);padding:36px 28px;text-align:center;border:2px solid var(--gray-100);transition:var(--transition);position:relative}
.download-card.featured{border-color:var(--green-500);box-shadow:var(--shadow-green);transform:scale(1.02)}
.download-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.download-card.featured:hover{transform:scale(1.02) translateY(-3px)}
.download-card .version-badge{
    position:absolute;top:-14px;left:50%;transform:translateX(-50%);
    background:var(--green-500);color:#fff;padding:5px 16px;
    border-radius:var(--radius-full);font-size:.78rem;font-weight:700
}
.download-card .free-badge{background:var(--gray-600)}
.download-card i{font-size:3rem;color:var(--green-500);margin-bottom:14px}
.download-card h3{font-size:1.3rem;font-weight:700;margin-bottom:6px}
.download-card .price{font-size:2.5rem;font-weight:900;color:var(--green-600);margin:12px 0 4px}
.download-card .price small{font-size:1rem;font-weight:500;color:var(--gray-400)}
.download-card .features{list-style:none;text-align:left;margin:20px 0}
.download-card .features li{padding:8px 0;font-size:.9rem;color:var(--gray-600);display:flex;align-items:center;gap:8px}
.download-card .features li i{font-size:.8rem;margin:0;color:var(--green-500)}
.download-card .features li.off{color:var(--gray-400)}
.download-card .features li.off i{color:var(--gray-300)}

/* Buy Page / Payment Gateway */
.gateway-container{max-width:550px;margin:0 auto}
.gateway-card{background:var(--white);border-radius:var(--radius-xl);padding:32px;border:1px solid var(--gray-100);box-shadow:var(--shadow-lg)}
.gateway-header{text-align:center;margin-bottom:24px}
.gateway-header h2{font-weight:800;font-size:1.5rem}
.gateway-amount{font-size:2.5rem;font-weight:900;color:var(--green-600);text-align:center;margin:16px 0}
.gateway-amount .original{font-size:1rem;color:var(--gray-400);text-decoration:line-through;margin-right:8px}
.crypto-options{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}
.crypto-opt{text-align:center;padding:14px 8px;border:2px solid var(--gray-200);border-radius:var(--radius);cursor:pointer;transition:var(--transition)}
.crypto-opt:hover{border-color:var(--green-300)}
.crypto-opt.active{border-color:var(--green-500);background:var(--green-50)}
.crypto-opt i{font-size:1.6rem;margin-bottom:6px;display:block}
.crypto-opt .name{font-size:.75rem;font-weight:600;color:var(--gray-600)}
.address-box{background:var(--gray-50);border-radius:var(--radius);padding:20px;text-align:center;margin:16px 0;border:1px dashed var(--green-300)}
.address-box .addr{font-family:'SF Mono','Courier New',monospace;font-size:.8rem;color:var(--gray-700);word-break:break-all;background:var(--white);padding:10px;border-radius:var(--radius-sm);margin:8px 0}
.qr-code{width:120px;height:120px;background:var(--white);margin:12px auto;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;border:1px solid var(--gray-200);font-size:4rem}
.timer{font-size:.85rem;color:var(--orange-500);font-weight:600;margin-top:8px}
.timer i{animation:spin 2s linear infinite}
@keyframes spin{100%{transform:rotate(360deg)}}
.status-bar{text-align:center;padding:16px;border-radius:var(--radius);margin:16px 0;font-weight:600;font-size:.9rem}
.status-pending{background:#fef3c7;color:#92400e}
.status-detecting{background:#dbeafe;color:#1e40af}
.status-processing{background:#e0e7ff;color:#3730a3}
.status-confirmed{background:var(--green-100);color:var(--green-700)}
.status-failed{background:#fee2e2;color:#991b1b}

/* Coupon */
.coupon-box{display:flex;gap:8px;margin:12px 0}
.coupon-box input{flex:1;padding:10px 14px;border:2px solid var(--gray-200);border-radius:var(--radius);font-family:inherit;font-size:.9rem}
.coupon-box input:focus{outline:none;border-color:var(--green-500)}
.coupon-discount{background:var(--green-50);color:var(--green-700);padding:8px 14px;border-radius:var(--radius);font-size:.85rem;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* Form */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;font-size:.85rem;color:var(--gray-700);margin-bottom:5px}
.form-group input,.form-group select{
    width:100%;padding:12px 14px;border:2px solid var(--gray-200);
    border-radius:var(--radius);font-size:.95rem;font-family:inherit;transition:var(--transition)
}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--green-500);box-shadow:0 0 0 3px rgba(34,197,94,0.08)}

/* Card input */
.card-input-wrapper{position:relative}
.card-input-wrapper input{padding-right:60px}
.card-type-indicator{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:1.4rem;opacity:.4;transition:var(--transition)}
.card-type-indicator.detected{opacity:1}

/* Video Library */
.video-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.video-filter{padding:8px 16px;border:2px solid var(--gray-200);border-radius:var(--radius-full);font-size:.85rem;font-weight:500;cursor:pointer;transition:var(--transition);background:var(--white);color:var(--gray-600)}
.video-filter:hover{border-color:var(--green-300)}
.video-filter.active{background:var(--green-500);color:#fff;border-color:var(--green-500)}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.video-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--gray-100);transition:var(--transition);cursor:pointer}
.video-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.video-thumb{position:relative;aspect-ratio:16/9;background:var(--gray-900);display:flex;align-items:center;justify-content:center;overflow:hidden}
.video-thumb video{width:100%;height:100%;object-fit:cover}
.video-play-btn{position:absolute;width:56px;height:56px;border-radius:50%;background:rgba(34,197,94,0.9);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.4rem;transition:var(--transition)}
.video-card:hover .video-play-btn{transform:scale(1.1)}
.video-info{padding:16px}
.video-info h4{font-weight:600;font-size:.95rem;margin-bottom:4px}
.video-info .meta{font-size:.8rem;color:var(--gray-500)}

/* Video Modal */
.modal{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.85);display:none;align-items:center;justify-content:center;padding:20px}
.modal.show{display:flex}
.modal-close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.2);color:#fff;border:none;cursor:pointer;font-size:1.2rem;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.modal-close:hover{background:rgba(255,255,255,0.3)}
.modal-content{width:100%;max-width:800px;border-radius:var(--radius-lg);overflow:hidden}
.modal-content video{width:100%;display:block;border-radius:var(--radius-lg)}

/* License Key Display */
.license-display{background:var(--green-50);border:2px solid var(--green-400);border-radius:var(--radius-lg);padding:24px;text-align:center;margin:20px 0}
.license-display .key{font-family:'SF Mono','Courier New',monospace;font-size:1.2rem;font-weight:700;color:var(--green-700);letter-spacing:1px}
.license-display i{font-size:3rem;color:var(--green-500);margin-bottom:12px}

/* Admin */
.admin-sidebar{width:240px;background:var(--gray-900);min-height:100vh;position:fixed;left:0;top:0;padding:20px;color:#fff}
.admin-main{margin-left:240px;padding:24px}
.admin-card{background:var(--white);border-radius:var(--radius-lg);padding:24px;border:1px solid var(--gray-100);margin-bottom:20px}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th{background:var(--gray-50);padding:12px 16px;text-align:left;font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.5px;color:var(--gray-600)}
.admin-table td{padding:12px 16px;border-bottom:1px solid var(--gray-100);font-size:.9rem}
.admin-table tr:hover td{background:var(--gray-50)}
.status-badge{padding:4px 10px;border-radius:var(--radius-full);font-size:.75rem;font-weight:600}
.status-active{background:var(--green-100);color:var(--green-700)}
.status-pending{background:#fef3c7;color:#92400e}
.status-expired{background:var(--gray-100);color:var(--gray-600)}

/* Toast */
.toast{
    position:fixed;top:20px;right:20px;z-index:9999;
    background:var(--white);border-radius:var(--radius);padding:14px 18px;
    box-shadow:var(--shadow-xl);display:flex;align-items:center;gap:10px;
    transform:translateX(120%);transition:transform .3s;min-width:280px;max-width:400px
}
.toast.show{transform:translateX(0)}
.toast-success{border-left:4px solid var(--green-500)}
.toast-error{border-left:4px solid var(--red-500)}

/* Footer */
.footer{background:var(--gray-900);color:var(--gray-300);padding:50px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:.95rem}
.footer-col a{color:var(--gray-400);text-decoration:none;font-size:.85rem;display:block;margin-bottom:8px;transition:var(--transition)}
.footer-col a:hover{color:var(--green-400)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:20px;text-align:center;font-size:.8rem;color:var(--gray-500)}

/* Responsive */
@media(max-width:768px){
    .hero-grid{grid-template-columns:1fr;text-align:center}
    .hero-text p{margin:0 auto 24px}
    .hero-btns{justify-content:center}
    .phone-mockup{width:200px;height:400px}
    .mobile-toggle{display:flex}
    .nav-links{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--white);flex-direction:column;padding:80px 24px 24px;gap:16px;box-shadow:var(--shadow-xl);transition:right .3s}
    .nav-links.open{right:0}
    .admin-sidebar{display:none}
    .admin-main{margin-left:0}
    .crypto-options{grid-template-columns:repeat(2,1fr)}
}

/* Blockchain confirmation animation */
.status-detecting {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}
.status-detecting i {
    animation: spin 1.5s linear infinite;
}
.confirmation-progress {
    width: 100%;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}
.confirmation-progress .bar {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 2px;
    transition: width 0.5s ease;
}

/* Blockchain confirmation animation */
.status-detecting {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}
.status-detecting i {
    animation: spin 1.5s linear infinite;
}
.confirmation-progress {
    width: 100%;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}
.confirmation-progress .bar {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 2px;
    transition: width 0.5s ease;
}