/* 999PAY Styles - Following 999DEX Design Language */

:root {
    --primary: #8b5cf6;
    --secondary: #06b6d4;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-border: rgba(139, 92, 246, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #4c1d95 50%, #0f172a 100%);
    color: #ffffff;
    min-height: 100vh;
    line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #1e293b;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, #7c3aed, #0891b2);
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--dark-border);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: bold;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: #e2e8f0;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

/* Buttons - Using 999DEX Design System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;                        /* Standard button height (WCAG AAA) */
    padding: 0 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn:active:not(:disabled) {
    transform: scale(0.95);
    transition-duration: 150ms;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--primary);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(139, 92, 246, 0.3);
    border-color: rgba(139, 92, 246, 0.5);
}

/* Button Sizes */
.btn-sm {
    height: 40px;
    font-size: 14px;
    padding: 0 12px;
}

.btn-lg {
    height: 48px;
    font-size: 18px;
    padding: 0 24px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #a78bfa, #ec4899, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

/* Feature Grid */
.features {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;                          /* 2rem standardized */
    margin-top: 48px;                   /* 3rem standardized */
}

.feature-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--dark-border);
    border-radius: 16px;                /* 1rem = 16px standardized */
    padding: 32px;                      /* 2rem = 32px standardized */
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-4px);        /* Consistent with token cards */
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.3);
}

.feature-card:active {
    transform: translateY(-2px);
    transition-duration: 150ms;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 12px;                /* Slightly smaller for icons */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;                    /* 2rem = 32px */
    margin-bottom: 24px;                /* 1.5rem = 24px */
}

.feature-card h3 {
    font-size: 24px;                    /* 1.5rem = 24px */
    font-weight: 700;
    margin-bottom: 16px;                /* 1rem = 16px */
    color: #f1f5f9;
}

.feature-card p {
    font-size: 16px;
    color: #cbd5e1;
    line-height: 1.7;
}

/* Section */
.section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Contract Display */
.contract-info {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--dark-border);
    border-radius: 1rem;
    padding: 2rem;
    margin: 3rem auto;
    max-width: 900px;
}

.contract-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.contract-item:last-child {
    border-bottom: none;
}

.contract-label {
    font-weight: 600;
    color: #cbd5e1;
}

.contract-address {
    font-family: 'Courier New', monospace;
    color: var(--secondary);
    font-size: 0.9rem;
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 12px;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--primary);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.copy-btn:hover {
    background: rgba(139, 92, 246, 0.3);
    border-color: rgba(139, 92, 246, 0.5);
    transform: scale(1.02);
}

.copy-btn:active {
    transform: scale(0.98);
}

/* Footer */
footer {
    border-top: 1px solid var(--dark-border);
    padding: 3rem 2rem;
    margin-top: 4rem;
    text-align: center;
    color: #94a3b8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .nav-links {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Status Badge */
.status-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-badge.live {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid #10b981;
}

.status-badge.coming-soon {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid #f59e0b;
}