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

:root {
    --bg-main: #0B0F19;
    --bg-card: #151C2C;
    --primary: #3B82F6;
    --secondary: #A855F7;
    --text-main: #FFFFFF;
    --text-muted: #94A3B8;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Plus Jakarta Sans', sans-serif; -webkit-tap-highlight-color: transparent; }

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(168, 85, 247, 0.08), transparent 25%);
}

/* Navbar */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px; max-width: 1000px; margin: 0 auto;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: 1px; }
.logo .highlight { color: var(--primary); }
.btn-login {
    background: transparent; border: 1px solid var(--primary);
    color: var(--primary); padding: 8px 20px; border-radius: 20px;
    font-weight: 600; cursor: pointer; transition: 0.3s;
}
.btn-login:hover { background: var(--primary); color: #fff; box-shadow: 0 0 15px rgba(59, 130, 246, 0.4); }

/* Hero Section */
.hero { text-align: center; padding: 60px 20px; position: relative; max-width: 800px; margin: 0 auto; }
.badge {
    display: inline-block; padding: 6px 16px; background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3); color: var(--primary);
    border-radius: 30px; font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
.title { font-size: 40px; line-height: 1.3; font-weight: 800; margin-bottom: 20px; }
.gradient-text {
    background: linear-gradient(135deg, #00FFFF, #A855F7, #FF007A);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.subtitle { color: var(--text-muted); font-size: 15px; line-height: 1.6; max-width: 600px; margin: 0 auto 30px auto; }

.action-group { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
.btn-primary, .btn-secondary {
    display: flex; align-items: center; gap: 10px; padding: 14px 28px;
    border-radius: 12px; font-weight: 800; font-size: 15px; border: none; cursor: pointer; transition: 0.3s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white;
    box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 25px rgba(168, 85, 247, 0.5); }
.btn-secondary { background: var(--bg-card); color: white; border: 1px solid rgba(255,255,255,0.1); }
.btn-secondary:hover { background: rgba(255,255,255,0.05); }

/* Stats Section */
.stats-container {
    display: flex; justify-content: center; gap: 20px; flex-wrap: wrap;
    max-width: 900px; margin: 40px auto; padding: 0 20px;
}
.stat-card {
    background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px; padding: 24px; flex: 1; min-width: 200px;
    text-align: center; box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.stat-card h3 { font-size: 28px; font-weight: 800; margin: 12px 0 4px 0; }
.stat-card p { color: var(--text-muted); font-size: 14px; font-weight: 600; }
.icon-box {
    width: 50px; height: 50px; border-radius: 12px; margin: 0 auto;
    display: flex; justify-content: center; align-items: center; background: #0B0F19;
}
.blue-glow { box-shadow: 0 0 15px rgba(59, 130, 246, 0.4); border: 1px solid var(--primary); }
.purple-glow { box-shadow: 0 0 15px rgba(168, 85, 247, 0.4); border: 1px solid var(--secondary); }
.green-glow { box-shadow: 0 0 15px rgba(16, 185, 129, 0.4); border: 1px solid #10B981; }

/* =========================================
   BỘ SƯU TẬP ICON VẼ BẰNG CSS THUẦN 100%
   ========================================= */

/* 1. Icon Logo (Vòng tròn đồng tâm chéo) */
.css-logo-icon { width: 24px; height: 24px; border: 3px solid var(--primary); border-radius: 50%; position: relative; }
.css-logo-icon::after { content: ''; position: absolute; top: -3px; left: 4px; width: 14px; height: 14px; border: 3px solid #00FFFF; border-radius: 50%; border-left-color: transparent; transform: rotate(45deg); }

/* 2. Icon Nút Play (Hình tam giác) */
.css-icon-play { width: 0; height: 0; border-top: 6px solid transparent; border-bottom: 6px solid transparent; border-left: 10px solid #fff; }

/* 3. Icon Nút Info (Hình chữ i) */
.css-icon-info { width: 18px; height: 18px; border: 2px solid #fff; border-radius: 50%; position: relative; }
.css-icon-info::before { content: ''; position: absolute; top: 3px; left: 6px; width: 2px; height: 2px; background: #fff; border-radius: 50%; }
.css-icon-info::after { content: ''; position: absolute; top: 7px; left: 6px; width: 2px; height: 5px; background: #fff; }

/* 4. Icon User (Đầu & Thân người) */
.css-icon-user { width: 20px; height: 20px; position: relative; }
.css-icon-user::before { content: ''; position: absolute; top: 0; left: 5px; width: 10px; height: 10px; border: 2px solid var(--primary); border-radius: 50%; }
.css-icon-user::after { content: ''; position: absolute; bottom: 0; left: 0; width: 20px; height: 8px; border: 2px solid var(--primary); border-bottom: none; border-radius: 10px 10px 0 0; }

/* 5. Icon Ví tiền / Thẻ tín dụng (Wallet) */
.css-icon-wallet { width: 22px; height: 16px; border: 2px solid var(--secondary); border-radius: 3px; position: relative; }
.css-icon-wallet::before { content: ''; position: absolute; top: 3px; right: -2px; width: 6px; height: 6px; border: 2px solid var(--secondary); border-right: none; background: #0B0F19; border-radius: 3px 0 0 3px; }

/* 6. Icon Dấu tích hoàn thành (Check) */
.css-icon-check { width: 10px; height: 18px; border-bottom: 3px solid #10B981; border-right: 3px solid #10B981; transform: rotate(45deg); margin-bottom: 4px; }

/* =========================================
   FOOTER SECTION
   ========================================= */
.footer {
    background-color: #080B14; /* Tối hơn màu nền chính một chút để tạo độ sâu */
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 60px 20px 20px 20px;
    margin-top: 60px;
}

.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
    max-width: 400px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links-group {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-main);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: 0.3s;
}

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

.footer-bottom {
    max-width: 1000px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: left;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 8px;
}

.footer-keywords {
    font-size: 12px !important;
    color: #475569 !important;
}