body {
	background: #F8F6F1;
	font-family: "Segoe UI", sans-serif;
}

/* NAVBAR */

.custom-navbar {
	background: #0B5D3F;
	box-shadow: 0 2px 10px rgba(0, 0, 0, .1);
}

.navbar-brand {
	font-weight: 700;
	font-size: 1.4rem;
	letter-spacing: 1px;
}

/* HERO */

.hero-banner {
	border-radius: 20px;
	overflow: hidden;

	box-shadow:
		0 4px 15px rgba(0, 0, 0, .1);

	margin-bottom: 40px;
}

.hero-banner img {
	width: 100%;

	height: 350px;

	object-fit: cover;

	display: block;
}

.hero-section h1 {
	font-weight: 700;
}

.hero-section p {
	font-size: 1.3rem;
}

/* SECTION */

.section-title {
	color: #0B5D3F;
	font-weight: bold;
	margin-bottom: 30px;
}

/* CARD */

.card {
	border: none;
	border-radius: 15px;

	box-shadow:
		0 4px 15px rgba(0, 0, 0, .08);
}

.course-card {
	transition: .3s;
	height: 100%;
}

.course-card:hover {
	transform: translateY(-8px);

	box-shadow:
		0 10px 25px rgba(0, 0, 0, .15);
}

/* BUTTON */

.btn-primary {
	background: #0B5D3F;
	border: none;
}

.btn-primary:hover {
	background: #084530;
}

/* STATISTICS */

.stats-section {
	margin-top: 60px;
}

.stats-box {
	background: white;

	padding: 25px;

	border-radius: 15px;

	box-shadow:
		0 3px 10px rgba(0, 0, 0, .08);
}

.stats-box h2 {
	color: #0B5D3F;
	font-weight: bold;
}

/* TEACHER */

.teacher-avatar {
	width: 120px;
	height: 120px;

	border-radius: 50%;

	object-fit: cover;

	margin-bottom: 15px;
}

/* FOOTER */

.footer {
	background: #0B5D3F;
	color: white;

	padding: 50px 0;

	margin-top: 80px;
}

.footer h5 {
	font-weight: bold;
}

.banner-slide {
	height: 450px;
	object-fit: cover;
}

.carousel {
	overflow: hidden;
	border-radius: 10px;
}

.hero-banner {
	position: relative;
	height: 400px;
	overflow: hidden;
	border-radius: 15px;
}

.hero-banner img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.hero-text {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	color: white;
	text-align: center;
	text-shadow: 0 2px 15px rgba(0, 0, 0, .6);
}

.floating-contact {
	position: fixed;
	right: 20px;
	bottom: 30px;

	display: flex;
	flex-direction: column;
	gap: 12px;

	z-index: 9999;
}

.floating-contact a {
	width: 55px;
	height: 55px;

	border-radius: 50%;

	display: flex;
	align-items: center;
	justify-content: center;

	text-decoration: none;

	box-shadow: 0 4px 10px rgba(0, 0, 0, .2);

	transition: .3s;
}

.floating-contact a:hover {
	transform: scale(1.1);
}


.contact-widget {
	position: fixed;
	right: 25px;
	bottom: 25px;

	display: flex;
	flex-direction: column-reverse;
	gap: 12px;

	z-index: 9999;
}

.contact-btn {
	width: 55px;
	height: 55px;

	border-radius: 50%;

	display: flex;
	align-items: center;
	justify-content: center;

	text-decoration: none;

	color: white;

	font-size: 22px;

	box-shadow:
		0 6px 15px rgba(0, 0, 0, .2);

	transition: .3s;
}

.contact-btn:hover {
	transform: translateY(-4px);
}

.zalo-btn {
	background: #0068ff;
	font-weight: bold;
}

.messenger-btn {
	background: #0084ff;
}

.phone-btn {
	background: #28a745;

	animation: ring 1.5s infinite;
}

.top-btn {
	background: #666;
}

@keyframes ring {

	0% {
		transform: rotate(0);
	}

	10% {
		transform: rotate(15deg);
	}

	20% {
		transform: rotate(-15deg);
	}

	30% {
		transform: rotate(15deg);
	}

	40% {
		transform: rotate(0);
	}

}

.support-fab {
	position: fixed;
	right: 25px;
	bottom: 25px;
	z-index: 9999;
}

.support-trigger {

	width: auto;

	min-width: 140px;

	height: 56px;

	padding: 0 20px;

	border: none;

	border-radius: 30px;

	background: #0B5D3F;

	color: white;

	display: flex;

	align-items: center;

	gap: 10px;

	font-weight: 600;

	font-size: 18px;

	box-shadow:
		0 8px 20px rgba(0, 0, 0, .25);

	cursor: pointer;

	transition: .3s;
}

.support-trigger:hover {
	transform: scale(1.08);
}

.support-menu {

	position: absolute;

	bottom: 80px;
	right: 0;

	display: flex;
	flex-direction: column;

	gap: 12px;

	opacity: 0;
	visibility: hidden;

	transform: translateY(20px);

	transition: .3s;
}

.support-fab.active .support-menu {

	opacity: 1;
	visibility: visible;

	transform: translateY(0);
}

.support-link {

	min-width: 180px;

	height: 52px;

	border-radius: 30px;

	display: flex;

	align-items: center;

	gap: 12px;

	padding: 0 18px;

	text-decoration: none;

	color: white;

	font-weight: 600;

	box-shadow:
		0 6px 15px rgba(0, 0, 0, .15);

	transition: .3s;
}

.support-link:hover {

	transform: translateX(-6px);

	color: white;
}

.support-link img {
	width: 24px;
	height: 24px;
}

.zalo {
	background: #0068ff;
}

.messenger {
	background: #0084ff;
}

.phone {
	background: #16a34a;
}


.social-links {
	display: flex;
	gap: 15px;
}

.social-links a {
	width: 42px;
	height: 42px;

	display: flex;
	align-items: center;
	justify-content: center;

	border-radius: 50%;

	color: white;

	border: 1px solid rgba(255, 255, 255, .3);
}

.course-price {
	margin-top: 10px;
}

.old-price {
	text-decoration: line-through;
	color: #888;
	font-size: 15px;
}

.discount-badge {
	background: #ff4d4f;
	color: white;
	padding: 3px 8px;
	border-radius: 12px;
	margin-left: 10px;
	font-size: 12px;
	font-weight: bold;
}

.new-price {
	color: #0a8f5a;
	font-size: 28px;
	font-weight: 700;
	margin-top: 5px;
}
/* ================= MOBILE ================= */

@media (max-width:768px){

    body{
        font-size:14px;
    }

    .container{
        padding-left:12px;
        padding-right:12px;
    }

    .navbar-brand{
        font-size:0.95rem;
        max-width:220px;
        line-height:1.2;
        white-space:normal;
    }

    .hero-banner{
        height:220px;
    }

    .section-title{
        font-size:24px;
        margin-bottom:20px;
    }

    .new-price{
        font-size:22px;
    }

    .old-price{
        font-size:13px;
    }

    .support-trigger{
        width:60px;
        height:60px;
        min-width:60px;
        border-radius:50%;
        padding:0;
    }

    .support-trigger span{
        display:none;
    }

    .footer{
        text-align:center;
    }

    .social-links{
        justify-content:center;
    }

    #gioithieu p{
        line-height:1.8;
    }

}
.navbar .btn{
    margin-left:8px;
}