@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Fira+Code:wght@400;500;600&display=swap');

:root {
    --bg-primary: #060709;
    --bg-secondary: #0d0f12;
    --bg-glass: rgba(13, 15, 18, 0.65);
    --bg-glass-active: rgba(26, 29, 36, 0.8);
    --border-glass: rgba(255, 215, 0, 0.12);
    --border-glass-hover: rgba(255, 215, 0, 0.3);
    
    --accent-gold: #ffd700;
    --accent-gold-dark: #b8860b;
    --accent-gold-light: #ffea70;
    --accent-gold-rgb: 255, 215, 0;
    --gold-gradient: linear-gradient(135deg, #ffe259 0%, #ffa751 100%);
    --gold-text-gradient: linear-gradient(135deg, #fff2a3 0%, #ffd700 50%, #cca300 100%);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --shadow-gold: 0 0 25px rgba(255, 215, 0, 0.15);
    --shadow-gold-strong: 0 0 35px rgba(255, 215, 0, 0.35);
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base styles & Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Gradients Glow */
body::before, body::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.05) 0%, rgba(255, 215, 0, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

body::before {
    top: -100px;
    right: -100px;
}

body::after {
    top: 50%;
    left: -200px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 215, 0, 0.2);
    border-radius: 4px;
    transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 215, 0, 0.5);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-gradient {
    background: var(--gold-text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    box-shadow: var(--shadow-glass);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.glass-card:hover {
    border-color: var(--border-glass-hover);
    box-shadow: var(--shadow-glass), var(--shadow-gold);
}

.btn-primary {
    background: var(--gold-gradient);
    color: #000000;
    font-family: var(--font-display);
    font-weight: 700;
    padding: 12px 28px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4), var(--shadow-gold-strong);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-weight: 600;
    padding: 11px 27px;
    border: 1px solid rgba(255, 215, 0, 0.4);
    border-radius: 30px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    border-color: var(--accent-gold);
    background: rgba(255, 215, 0, 0.05);
    box-shadow: var(--shadow-gold);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 20px 0;
    transition: padding var(--transition-normal), background var(--transition-normal), border-bottom var(--transition-normal);
}

header.scrolled {
    padding: 12px 0;
    background: rgba(6, 7, 9, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 215, 0, 0.08);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gold-gradient);
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-weight: 900;
    color: #000000;
    font-size: 20px;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}

header nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

header nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    padding: 4px 0;
}

header nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    transition: var(--transition-fast);
}

header nav a:hover {
    color: var(--text-primary);
}

header nav a:hover::after {
    width: 100%;
}

.header-action {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 6px 0;
    transition: var(--transition-normal);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 25%;
    right: 15%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, rgba(255, 215, 0, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item h3 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 4px;
}

.stat-item p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 0;
}

.hero-visual {
    position: relative;
    display: grid;
    place-items: center;
}

.mockup-container {
    width: 100%;
    max-width: 320px;
    position: relative;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.mockup-image {
    width: 100%;
    height: auto;
    border-radius: 36px;
    border: 8px solid #1a1c20;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), var(--shadow-gold);
    animation: float 6s ease-in-out infinite;
}

.floating-badge {
    position: absolute;
    background: rgba(26, 29, 36, 0.8);
    border: 1px solid var(--border-glass-hover);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), var(--shadow-gold);
    animation: floatBadge 6s ease-in-out infinite;
    z-index: 10;
    transform: translateZ(50px);
}

.floating-badge.badge-1 {
    top: 20%;
    left: -85px;
    animation-delay: 0s;
}

.floating-badge.badge-2 {
    bottom: 25%;
    right: -75px;
    animation-delay: 3s;
}

.badge-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    font-size: 16px;
}

.badge-info h4 {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
}

.badge-info p {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

/* Console Section (Kích Hoạt) */
.activation-section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 215, 0, 0.08);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 20px;
    color: var(--accent-gold);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
}

.console-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

/* Activation Steps Grid */
.steps-indicator {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 12px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 16px 24px;
}

.step-indicator-item {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.5;
    transition: var(--transition-normal);
}

.step-indicator-item.active {
    opacity: 1;
}

.step-indicator-item.completed {
    opacity: 0.8;
}

.step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 14px;
    border: 1px solid transparent;
}

.step-indicator-item.active .step-num {
    background: var(--gold-gradient);
    color: #000000;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
}

.step-indicator-item.completed .step-num {
    background: #10b981;
    color: #ffffff;
}

.step-indicator-label {
    font-weight: 600;
    font-size: 14px;
}

/* Console Glass Card */
.activation-card {
    padding: 40px;
    position: relative;
}

.activation-panel {
    display: none;
}

.activation-panel.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

/* Panel 1: Check Username */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-family: var(--font-display);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 15px;
}

.input-container {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
    transition: var(--transition-fast);
}

.form-input {
    width: 100%;
    background: rgba(6, 7, 9, 0.6);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 16px 20px 16px 48px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 16px;
    outline: none;
    transition: var(--transition-normal);
}

.form-input:focus {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.15);
}

.form-input:focus + .input-icon {
    color: var(--accent-gold);
}

.activation-tips {
    margin-top: 24px;
    padding: 16px;
    background: rgba(255, 215, 0, 0.03);
    border-left: 3px solid var(--accent-gold);
    border-radius: 0 12px 12px 0;
}

.activation-tips p {
    font-size: 13.5px;
    color: var(--text-secondary);
}

/* Profile Result UI */
.profile-result-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-glass);
    border-radius: 16px;
    margin-bottom: 24px;
    animation: scaleUp var(--transition-normal);
}

.profile-avatar-container {
    position: relative;
    width: 90px;
    height: 90px;
    margin-bottom: 16px;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 5px;
    border: 2px solid #000;
}

.profile-gold-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent-gold);
    border-bottom-color: var(--accent-gold-dark);
    animation: rotate 3s linear infinite;
    box-shadow: var(--shadow-gold);
}

.profile-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.profile-username {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

.profile-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.profile-status-badge.gold {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--border-glass-hover);
    color: var(--accent-gold);
    box-shadow: var(--shadow-gold);
}

/* Panel 3: Terminal Simulation */
.terminal-wrapper {
    background: #020304;
    border: 1px solid #1a202c;
    border-radius: 12px;
    font-family: var(--font-mono);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.8);
    position: relative;
    overflow: hidden;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #1a202c;
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-dots .dot-r { background: #ef4444; }
.terminal-dots .dot-y { background: #f59e0b; }
.terminal-dots .dot-g { background: #10b981; }

.terminal-title {
    font-size: 11px;
    color: var(--text-muted);
}

.terminal-body {
    height: 220px;
    overflow-y: auto;
    font-size: 13px;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: 6px;
    scrollbar-width: thin;
}

.terminal-line {
    color: #c8d6e5;
}

.terminal-line.info { color: #f5a623; }
.terminal-line.success { color: #10b981; font-weight: 600; }
.terminal-line.error { color: #ef4444; }
.terminal-line.accent { color: var(--accent-gold); }

.terminal-body::-webkit-scrollbar {
    width: 6px;
}
.terminal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.progress-bar-container {
    height: 6px;
    background: #111827;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 20px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gold-gradient);
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(255,215,0,0.5);
    transition: width 0.1s linear;
}

/* DNS Panel */
.dns-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
    align-items: center;
}

.dns-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.dns-step-card {
    display: flex;
    gap: 14px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

.dns-step-num {
    width: 24px;
    height: 24px;
    background: rgba(255, 215, 0, 0.1);
    color: var(--accent-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.dns-step-info h5 {
    font-family: var(--font-display);
    font-size: 14px;
    margin-bottom: 4px;
}

.dns-step-info p {
    font-size: 12.5px;
    color: var(--text-secondary);
}

.dns-qrcode-wrapper {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-glass);
    padding: 24px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.qr-code-box {
    width: 140px;
    height: 140px;
    background: #ffffff;
    border-radius: 12px;
    padding: 10px;
    display: grid;
    place-items: center;
    margin-bottom: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.qr-code-box svg {
    width: 100%;
    height: 100%;
}

.dns-action-group {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-icon-box {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: rgba(255, 215, 0, 0.08);
    border: 1px solid rgba(255, 215, 0, 0.2);
    display: grid;
    place-items: center;
    color: var(--accent-gold);
    font-size: 24px;
    box-shadow: var(--shadow-gold);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
    align-items: center;
}

.pricing-card {
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    border-color: var(--accent-gold);
    box-shadow: 0 15px 40px -10px rgba(255, 215, 0, 0.15), var(--shadow-gold-strong);
    transform: scale(1.04);
}

.pricing-card.popular:hover {
    transform: scale(1.06) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gold-gradient);
    color: #000;
    font-weight: 800;
    font-size: 10px;
    padding: 6px 30px;
    transform: rotate(45deg);
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    margin-bottom: 30px;
}

.plan-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.popular .plan-name {
    color: var(--accent-gold);
}

.plan-price-row {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.plan-price {
    font-family: var(--font-display);
    font-size: 44px;
    font-weight: 800;
}

.plan-period {
    color: var(--text-muted);
    font-size: 14px;
}

.plan-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
    flex-grow: 1;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14.5px;
    color: var(--text-secondary);
}

.plan-features li svg {
    color: var(--accent-gold);
    font-size: 16px;
    flex-shrink: 0;
}

.plan-features li.disabled {
    opacity: 0.4;
    text-decoration: line-through;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary {
    width: 100%;
    justify-content: center;
}

/* Payment Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    z-index: 1000;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

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

.payment-modal {
    width: 90%;
    max-width: 580px;
    padding: 40px;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

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

.close-modal-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-modal-btn:hover {
    color: var(--text-primary);
}

.payment-modal h3 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 8px;
}

.payment-modal-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.payment-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: center;
}

.bank-info-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bank-info-item {
    padding: 10px 14px;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: 8px;
}

.bank-info-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 2px;
}

.bank-info-value-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bank-info-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--accent-gold);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    transition: var(--transition-fast);
}

.copy-btn:hover {
    color: var(--text-primary);
}

.pay-qrcode-container {
    background: #ffffff;
    border-radius: 12px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.vietqr-image {
    width: 100%;
    height: auto;
    margin-bottom: 8px;
}

.pay-qr-sub {
    font-size: 11px;
    color: #475569;
    text-align: center;
    font-weight: 600;
}

.payment-alert {
    margin-top: 24px;
    padding: 14px;
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 10px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.payment-alert-icon {
    color: #f59e0b;
    font-size: 18px;
    flex-shrink: 0;
}

.payment-alert-text {
    font-size: 12.5px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* FAQs Section */
.faqs-section {
    padding: 100px 0;
}

.faqs-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border-radius: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    background: rgba(255,255,255,0.01);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 20px 24px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-normal);
}

.faq-item.active .faq-question {
    border-color: var(--accent-gold);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    background: rgba(255, 215, 0, 0.03);
}

.faq-question-text {
    padding-right: 20px;
}

.faq-toggle-icon {
    font-size: 18px;
    color: var(--text-muted);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-toggle-icon {
    transform: rotate(45deg);
    color: var(--accent-gold);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out;
    background: rgba(6, 7, 9, 0.4);
    border: 1px solid var(--border-glass);
    border-top: none;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
}

.faq-answer-content {
    padding: 24px;
    color: var(--text-secondary);
    font-size: 14.5px;
    border-top: 1px solid rgba(255, 215, 0, 0.05);
}

/* Testimonial Section */
.testimonials-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.testimonials-slider-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    padding: 0 40px;
    overflow: hidden;
}

.testimonials-slider {
    display: flex;
    gap: 30px;
    transition: transform var(--transition-normal);
}

.testimonial-card {
    min-width: calc(50% - 15px);
    width: calc(50% - 15px);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.rating-stars {
    color: var(--accent-gold);
    display: flex;
    gap: 4px;
    font-size: 14px;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 14.5px;
    flex-grow: 1;
}

.testimonial-user {
    display: flex;
    align-items: center;
    gap: 14px;
}

.testimonial-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-gold);
}

.testimonial-user-info h5 {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
}

.testimonial-user-info p {
    font-size: 11px;
    color: var(--text-muted);
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}

.slider-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dot.active {
    background: var(--accent-gold);
    width: 24px;
    border-radius: 4px;
}

/* Footer */
footer {
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 215, 0, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h4 {
    margin-bottom: 20px;
    font-family: var(--font-display);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
    max-width: 280px;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-glass);
    display: grid;
    place-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link:hover {
    color: #000000;
    background: var(--gold-gradient);
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-gold);
}

.footer-col h5 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-col ul a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-col ul a:hover {
    color: var(--accent-gold);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.03);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

.footer-disclaimer {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    background: rgba(255,255,255,0.01);
    border-radius: 8px;
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate3d(1, 1, 1, 0deg);
    }
    50% {
        transform: translateY(-12px) rotate3d(1, 1, 1, 2deg);
    }
}

@keyframes floatBadge {
    0%, 100% {
        transform: translateY(0) translateZ(50px);
    }
    50% {
        transform: translateY(-8px) translateZ(50px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleUp {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive design */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 42px;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    .hero-content p {
        margin: 0 auto 32px;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-visual {
        order: -1;
    }
    .mockup-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 16px;
        max-width: 100%;
        position: relative;
    }
    .mockup-image {
        max-width: 300px;
        margin-bottom: 20px;
    }
    .floating-badge {
        position: static !important;
        animation: none !important;
        width: 100% !important;
        max-width: 280px !important;
        justify-content: center;
        margin: 6px 0;
        transform: none !important;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
    }
    .pricing-card.popular {
        transform: scale(1);
    }
    .pricing-card.popular:hover {
        transform: translateY(-4px);
    }
}

@media (max-width: 768px) {
    header {
        padding: 16px 0;
    }
    .menu-btn {
        display: block;
    }
    header nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 40px;
        transition: right var(--transition-normal);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    header nav.active {
        right: 0;
    }
    .hero {
        padding: 120px 0 60px;
    }
    .hero-visual {
        order: initial;
    }
    .hero-grid {
        gap: 40px;
    }
    .section-title {
        font-size: 32px;
    }
    .steps-indicator {
        flex-direction: column;
        gap: 16px;
    }
    .dns-layout {
        grid-template-columns: 1fr;
    }
    .payment-grid {
        grid-template-columns: 1fr;
    }
    .payment-modal {
        width: calc(100% - 32px);
        max-height: calc(100vh - 32px);
        overflow-y: auto;
        padding: 28px 22px;
    }
    .close-modal-btn {
        top: 16px;
        right: 16px;
    }
    .pay-qrcode-container {
        order: -1;
        max-width: 250px;
        margin: 0 auto;
    }
    .testimonial-card {
        min-width: 100%;
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .logo {
        font-size: 20px;
        gap: 8px;
    }
    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 18px;
    }
    .header-action {
        gap: 8px;
    }
    .header-action > .btn-primary {
        display: none;
    }
    .hero-content h1 {
        font-size: clamp(32px, 9vw, 38px);
        line-height: 1.08;
    }
    .hero-content p {
        font-size: 15px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        justify-content: center;
    }
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .payment-modal h3 {
        max-width: calc(100% - 36px);
        font-size: 23px;
    }
    .bank-info-value-row {
        gap: 10px;
    }
}

/* Accessibility and rendering performance */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 3px solid rgba(var(--accent-gold-rgb), 0.85);
    outline-offset: 3px;
}

@supports (min-height: 100dvh) {
    body {
        min-height: 100dvh;
    }
}

@media (min-width: 769px) {
    .features-section,
    .pricing-section,
    .dns-section,
    .testimonials-section,
    footer {
        content-visibility: auto;
        contain-intrinsic-size: auto 720px;
    }
}

@media (max-width: 768px) {
    button,
    .btn-primary,
    .btn-secondary,
    input,
    select {
        min-height: 44px;
    }

    .menu-btn {
        width: 44px;
        min-width: 44px;
        padding: 4px 9px;
    }

    header nav {
        height: 100vh;
        height: 100dvh;
    }

    header nav a {
        display: flex;
        min-height: 44px;
        align-items: center;
        padding: 10px 4px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}