:root {
    --bg-color: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --primary-color: #e50914;
    --primary-hover: #f40612;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
}

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

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

/* Background glows */
.bg-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--primary-color);
    filter: blur(150px);
    opacity: 0.15;
    z-index: -1;
    border-radius: 50%;
}
.rect-1 { top: -10%; left: -10%; }
.rect-2 { bottom: 10%; right: -5%; width: 400px; background: #ff4500; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; }
.logo-img { width: 32px; height: 32px; border-radius: 6px; object-fit: contain; }
.nav a { color: var(--text-secondary); text-decoration: none; margin-left: 20px; transition: color 0.3s; }
.nav a:hover { color: var(--text-primary); }

/* Hero */
.hero {
    text-align: center;
    padding: 60px 0;
}
.title { font-size: 3rem; line-height: 1.2; margin-bottom: 20px; }
.text-gradient {
    background: linear-gradient(135deg, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.subtitle { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 40px; }

.info-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.transparency-box {
    display: flex;
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 30px;
    border-radius: 12px;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(10px);
}
.box-icon { font-size: 1.8rem; }
.highlight { color: #f43f5e; font-weight: 600; font-size: 1.1rem; }

.how-it-works-box {
    text-align: left;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 25px 30px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}
.how-it-works-box h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.how-it-works-box ul {
    list-style: none;
}
.how-it-works-box li {
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
    line-height: 1.7;
}
.how-it-works-box li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    top: 0;
    font-size: 1.2rem;
    line-height: inherit;
}
.how-it-works-box .text-highlight {
    color: var(--text-primary);
    font-weight: 600;
}

/* Pricing */
.pricing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}
.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px;
    position: relative;
    backdrop-filter: blur(20px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.pricing-card:hover { transform: translateY(-5px); }

.premium-card {
    border-color: rgba(229, 9, 20, 0.4);
    box-shadow: 0 0 30px rgba(229, 9, 20, 0.1);
}
.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, #e50914, #ff4500);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.card-header h2 { font-size: 1.5rem; margin-bottom: 5px; }
.card-header p { color: var(--text-secondary); font-size: 0.9rem; }
.price { font-size: 2.5rem; font-weight: 700; margin: 20px 0; }
.period { font-size: 1rem; color: var(--text-secondary); font-weight: 400; }

.cost-breakdown {
    background: rgba(0,0,0,0.3);
    padding: 15px;
    border-radius: 8px;
    font-size: 0.85rem;
    color: #d4d4d8;
    margin-bottom: 30px;
    border-left: 3px solid var(--text-secondary);
}
.premium-card .cost-breakdown { border-left-color: var(--primary-color); }

.features { list-style: none; margin-bottom: 30px; }
.features li { margin-bottom: 12px; font-size: 0.95rem; display: flex; gap: 10px; }
.icon-check { color: #10b981; font-style: normal; }
.premium-card .icon-check { color: var(--primary-color); }

.waitlist { margin-bottom: 25px; }
.waitlist-text { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 8px; }
.progress-bar { width: 100%; height: 8px; background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: #10b981; border-radius: 4px; box-shadow: 0 0 10px #10b981;}

.status-indicator { margin-bottom: 25px; font-size: 0.9rem; display: flex; align-items: center; gap: 8px; color: #f43f5e; font-weight: 500; }
.dot { width: 8px; height: 8px; background: #f43f5e; border-radius: 50%; display: inline-block; }
.blink { animation: blink 1.5s infinite; }
@keyframes blink { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }

.btn {
    width: 100%;
    padding: 15px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}
.btn-primary { background: var(--primary-color); color: white; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 0 20px rgba(229,9,20,0.4); }
.btn-outline { background: transparent; border: 1px solid var(--text-primary); color: white; }
.btn-outline:hover { background: rgba(255,255,255,0.1); }

/* Footer */
footer { text-align: center; padding: 40px 0; color: var(--text-secondary); font-size: 0.9rem; border-top: 1px solid var(--card-border); margin-top: 40px; }

/* Responsive (Bản Điện Thoại) */
@media (max-width: 768px) {
    .header { padding: 20px 0; flex-direction: column; gap: 15px; text-align: center; }
    .nav a { margin: 0 10px; font-size: 0.95rem; }
    
    .hero { padding: 40px 0 30px 0; }
    .title { font-size: 2rem; }
    .subtitle { font-size: 1rem; margin-bottom: 30px; padding: 0 10px; line-height: 1.5; }
    
    .transparency-box { padding: 20px 15px; flex-direction: column; text-align: center; gap: 12px; }
    .box-icon { font-size: 2.5rem; margin-bottom: 5px; }
    
    .how-it-works-box { padding: 20px 15px; }
    .how-it-works-box h3 { font-size: 1.1rem; justify-content: center; text-align: center; margin-bottom: 20px; }
    
    .pricing { grid-template-columns: 1fr; gap: 25px; margin-bottom: 50px; }
    .pricing-card { padding: 30px 20px; border-radius: 20px; }
    .price { font-size: 2.2rem; margin: 15px 0; }
    
    .contact-notice { margin-top: -20px; margin-bottom: 40px; font-size: 0.85rem; padding: 0 20px; }
    
    footer { padding: 25px 0; margin-top: 20px; }
    
    /* Điều chỉnh ánh sáng nền nhỏ lại trên mobile */
    .bg-glow { width: 200px; height: 200px; filter: blur(100px); }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}
.modal.show {
    display: flex;
}
.modal-content {
    background: #111;
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    animation: modalFadeIn 0.3s ease;
}
@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}
.close-modal:hover { color: var(--text-primary); }
.modal-content h2 { margin-bottom: 10px; color: var(--text-primary); }
.modal-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 20px; line-height: 1.5; }
.form-group { margin-bottom: 20px; text-align: left;}
.form-group label { display: block; margin-bottom: 8px; font-size: 0.95rem; color: var(--text-secondary); font-weight: 500;}
.form-group input {
    width: 100%; padding: 12px 15px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px; color: var(--text-primary);
    font-size: 1rem; outline: none; transition: border-color 0.3s;
}
.form-group input:focus { border-color: var(--primary-color); }
.form-message { margin-top: 15px; font-size: 0.9rem; text-align: center; }
.form-message.success { color: #10b981; }
.form-message.error { color: #f43f5e; }

/* Floating Telegram Button */
.floating-tele-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #0088cc;
    color: white;
    padding: 12px 20px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 136, 204, 0.4);
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
    z-index: 999;
}
.floating-tele-btn:hover {
    transform: translateY(-3px);
    background-color: #0099e6;
    box-shadow: 0 6px 20px rgba(0, 136, 204, 0.6);
}
@media (max-width: 768px) {
    .floating-tele-btn {
        bottom: 20px;
        right: 20px;
        padding: 10px 16px;
        font-size: 0.95rem;
    }
}