:root {
    --bg-primary: #020202;
    --bg-secondary: #080808;
    --bg-accent: rgba(255, 255, 255, 0.02);
    --accent-color: #00ffa3;
    --accent-glow: rgba(0, 255, 163, 0.15);
    --accent-blue: #00d4ff;
    --danger-color: #ff4757;
    --warning-color: #feca57;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(10, 10, 10, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-premium: 0 20px 40px rgba(0,0,0,0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent-color);
}

.btn-primary {
    background: var(--accent-color);
    color: #000;
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, rgba(0, 255, 163, 0.05) 0%, transparent 50%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/hero.png');
    background-size: cover;
    background-position: center;
    opacity: 0.4;
    z-index: -1;
    filter: brightness(0.5);
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 255, 163, 0.08);
    border: 1px solid rgba(0, 255, 163, 0.15);
    color: var(--accent-color);
    padding: 0.5rem 1.2rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}



.how-step {
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #00d4ff);
    color: #000;
    font-size: 1.3rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
    box-shadow: 0 0 25px rgba(0, 255, 163, 0.2);
}



.section-title {
    margin-bottom: 3rem;
    text-align: center;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.card {
    background: linear-gradient(145deg, rgba(15, 15, 15, 0.6), rgba(5, 5, 5, 0.8));
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card:hover {
    border-color: var(--accent-color);
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 255, 163, 0.05);
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 163, 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.card:hover::after {
    opacity: 1;
}

.card-tag {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-tag::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-color);
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    line-height: 1.7;
    flex-grow: 1;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.price {
    font-weight: 700;
    font-size: 1.1rem;
}


.btn-buy {
    padding: 0.6rem 1.3rem;
    font-size: 0.85rem;
    position: relative;
    z-index: 2;
}

.btn-buy:hover {
    box-shadow: 0 0 25px rgba(0, 255, 163, 0.25);
}



.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.payment-modal-box {
    background: linear-gradient(160deg, #0a0a0a 0%, #050510 100%);
    border: 1px solid rgba(0, 255, 163, 0.1);
    border-radius: 24px;
    width: 100%;
    max-width: 480px;
    padding: 2.5rem;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
    position: relative;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5), 0 0 80px rgba(0,255,163,0.03);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .payment-modal-box {
    transform: scale(1) translateY(0);
}

.close-modal {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    z-index: 10;
}

.close-modal:hover {
    background: rgba(255,255,255,0.05);
    color: var(--danger-color);
}

.modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-header h2 {
    font-size: 1.6rem;
    margin-bottom: 0.4rem;
}

.modal-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1.3rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-select {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 0.9rem 1rem;
    border-radius: 10px;
    color: #fff;
    outline: none;
    transition: var(--transition);
    font-size: 0.9rem;
    font-family: inherit;
}

.form-group input:focus,
.form-select:focus {
    border-color: var(--accent-color);
    background: rgba(0, 255, 163, 0.03);
    box-shadow: 0 0 0 3px rgba(0, 255, 163, 0.05);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    cursor: pointer;
}

.form-select option {
    background: #0a0a0a;
    color: #fff;
    padding: 0.5rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
    padding: 1rem;
    font-size: 1rem;
    border-radius: 12px;
    margin-top: 0.5rem;
}

.modal-security-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 1.2rem;
    opacity: 0.7;
}

.modal-hint {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 1.2rem;
    line-height: 1.6;
    opacity: 0.8;
}



.payment-info-box {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.2rem;
}

.payment-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.88rem;
}

.payment-info-row:last-child {
    border-bottom: none;
}

.payment-info-row span {
    color: var(--text-secondary);
}

.timer-text {
    color: var(--warning-color) !important;
    font-family: 'Inter', monospace;
    font-variant-numeric: tabular-nums;
}


.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    margin-top: 1.5rem;
    padding: 0.8rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.02);
    font-size: 0.85rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-dot.status-waiting {
    background: var(--warning-color);
    animation: blink 1.5s ease-in-out infinite;
}

.status-dot.status-pending {
    background: var(--accent-blue);
    animation: blink 0.8s ease-in-out infinite;
}

.status-dot.status-completed {
    background: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    animation: none;
}

.status-dot.status-expired {
    background: var(--danger-color);
    animation: none;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}


.pulse-icon {
    animation: pulseIcon 2s ease-in-out infinite;
    color: var(--warning-color);
}

@keyframes pulseIcon {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}



.success-icon-glow {
    color: var(--accent-color);
    filter: drop-shadow(0 0 20px rgba(0, 255, 163, 0.4));
    animation: successPulse 2s ease-in-out infinite;
}

@keyframes successPulse {
    0%, 100% { filter: drop-shadow(0 0 20px rgba(0, 255, 163, 0.4)); }
    50% { filter: drop-shadow(0 0 40px rgba(0, 255, 163, 0.6)); }
}

.success-info {
    text-align: center;
    padding: 1.5rem;
    background: rgba(0, 255, 163, 0.04);
    border: 1px solid rgba(0, 255, 163, 0.1);
    border-radius: 14px;
}

.success-info p {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.downloads-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.downloads-info strong {
    color: var(--accent-color);
}

.btn-download-glow {
    background: linear-gradient(135deg, #00ffa3, #00d4ff);
    font-size: 1.05rem;
    font-weight: 700;
    box-shadow: 0 0 25px rgba(0, 255, 163, 0.2);
}

.btn-download-glow:hover {
    box-shadow: 0 0 40px rgba(0, 255, 163, 0.35);
    transform: translateY(-3px);
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: particleFall 2.5s ease-out forwards;
    pointer-events: none;
    z-index: 100;
}

@keyframes particleFall {
    0% { transform: translateY(-20px) scale(1); opacity: 1; }
    100% { transform: translateY(400px) scale(0); opacity: 0; }
}



.error-toast {
    position: fixed;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 71, 87, 0.95);
    color: #fff;
    padding: 0.9rem 2rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 3000;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(255, 71, 87, 0.3);
    white-space: nowrap;
}

.error-toast.show {
    bottom: 30px;
}



footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--accent-color);
}


.payment-methods {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.payment-methods i {
    font-size: 1.3rem;
    color: var(--accent-color);
    opacity: 0.7;
    transition: var(--transition);
}

.payment-methods i:hover {
    opacity: 1;
}

.crypto-badge {
    background: rgba(0, 255, 163, 0.08);
    border: 1px solid rgba(0, 255, 163, 0.12);
    color: var(--accent-color);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
}



@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate {
    animation: fadeIn 0.8s ease forwards;
}



@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .payment-modal-box {
        margin: 1rem;
        padding: 1.8rem;
        max-height: 95vh;
        border-radius: 18px;
    }
    
    .modal-header h2 {
        font-size: 1.3rem;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .payment-methods {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .container { padding: 0 1rem; }
    
    .card {
        padding: 1.5rem;
    }
    
    .card-meta {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .card-meta .btn-buy {
        width: 100%;
        justify-content: center;
    }
}