:root {
    --primary-grad: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-color: #ff9a9e;
    --text-main: #2d3436;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }
body { background-color: #f4f7f6; color: #333;  }


/* Navbar Style */
.navbar {
    max-width: 560px;
    margin: 0 auto;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px); /* Hiệu ứng kính mờ */
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
    margin: 0 auto;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: rgba(0, 99, 200, 0.97);
    letter-spacing: -1px;
}

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

.nav-links {
    display: flex;
    gap: 15px;
    list-style: none;
    margin: 0; 
	padding: 15px 10px;
}
.nav-links li{
	padding: 5px;
}
.nav-links span.ico-nav{
	display: initial;
}

.nav-links li a {
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    transition: 0.3s;
}

.nav-links li a:hover {
    color: #4834d4;
}

/* Hero Section Style */
.hero-wrapper {
    max-width: 560px;
    margin: 10px auto;
    padding: 0px;
}

.hero {
    background: var(--primary-grad);
    border-radius: 10px;
    padding: 40px 25px;
    color: white;
    position: relative;
    overflow: hidden; /* Để cắt các hình trang trí tràn ra ngoài */
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.3);
	text-align: center; 
}

.hero-content {
    position: relative;
    z-index: 2;
}

.badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 15px;
}

.hero h1 {
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 15px;
    font-weight: 800;
}

.hero h1 span {
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* Buttons */
.hero-btns {
    /* display: flex; 
    gap: 10px;*/
	align-items: center;
}

.btn-primary {
    background: white;
    color: rgba(0, 99, 200, 0.97);
    border: none;
    padding: 12px 25px;
    border-radius: 15px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.4);
    padding: 12px 25px;
    border-radius: 15px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.3s;
}
.btn-outline:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* Trang trí bong bóng nổi */
.hero-circle {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -50px;
    right: -50px;
    z-index: 1;
}

/* Animation mượt mà khi load trang */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}


.container { padding: 40px 5%; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card { background: white; padding: 25px; border-radius: 10px; text-align: center; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.card i { font-size: 3rem; color: #0056b3; margin-bottom: 15px; }

@media (min-width: 700px) {
    #app-content, #content_detail {
        /* max-width: 720px; */
    }
}

@media (max-width: 430px) {
	.hero h1 {
		font-size: 1.5rem;
	}
	.logo{
		font-size: 1rem;
	}
	.nav-links li a span.ico-nav{
		display: none;
	}
	.nav-links li a{
		font-size: 0.7rem;
	}
}