/* ==========================================================================
   GK WINTRON - SEO SEMANTIC CONTENT & ADMISSION DRAWER
   Tối ưu hóa SEO Googlebot & Trải nghiệm người dùng tra cứu tuyển sinh
   ========================================================================== */

:root {
	--seo-bg: rgba(7, 13, 24, 0.96);
	--seo-card-bg: rgba(15, 23, 42, 0.85);
	--seo-accent: #38bdf8;
	--seo-pink: #ec4899;
	--seo-gold: #f59e0b;
	--seo-text: #f8fafc;
	--seo-muted: #94a3b8;
	--seo-border: rgba(255, 255, 255, 0.12);
}

/* Nút kích hoạt mở Drawer thông tin Tuyển sinh trên giao diện Tour 360 */
.seo-toggle-btn {
	position: fixed;
	bottom: 24px;
	left: 24px;
	z-index: 1000;
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 10px 18px;
	background: linear-gradient(135deg, rgba(14, 165, 233, 0.9), rgba(236, 72, 153, 0.9));
	border: 1px solid rgba(255, 255, 255, 0.3);
	border-radius: 999px;
	color: #ffffff;
	font-size: 0.88rem;
	font-weight: 700;
	cursor: pointer;
	box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5), 0 0 15px rgba(56, 189, 248, 0.4);
	backdrop-filter: blur(12px);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	user-select: auto;
}

.seo-toggle-btn:hover {
	transform: translateY(-3px) scale(1.02);
	box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6), 0 0 25px rgba(236, 72, 153, 0.6);
	background: linear-gradient(135deg, rgba(2, 132, 199, 0.95), rgba(219, 39, 119, 0.95));
}

.seo-pulse-dot {
	width: 8px;
	height: 8px;
	background: #4ade80;
	border-radius: 50%;
	box-shadow: 0 0 8px #4ade80;
	animation: seoPulse 1.8s infinite;
}

@keyframes seoPulse {
	0% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7); }
	70% { transform: scale(1.15); opacity: 1; box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
	100% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* Modal / Drawer chứa toàn bộ nội dung Semantic HTML cho SEO */
.seo-drawer-overlay {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.75);
	backdrop-filter: blur(8px);
	z-index: 10000;
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.35s ease, visibility 0.35s ease;
	display: flex;
	justify-content: flex-start;
}

.seo-drawer-overlay.active {
	opacity: 1;
	visibility: visible;
}

.seo-drawer-content {
	width: 100%;
	max-width: 680px;
	height: 100%;
	background: var(--seo-bg);
	border-right: 1px solid var(--seo-border);
	box-shadow: 20px 0 50px rgba(0, 0, 0, 0.8);
	overflow-y: auto;
	padding: 32px 28px 80px;
	transform: translateX(-100%);
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	scrollbar-width: thin;
	scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.seo-drawer-overlay.active .seo-drawer-content {
	transform: translateX(0);
}

.seo-close-btn {
	position: absolute;
	top: 20px;
	right: 20px;
	width: 36px;
	height: 36px;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.1);
	border: 1px solid rgba(255, 255, 255, 0.15);
	color: #ffffff;
	font-size: 18px;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: all 0.2s ease;
}

.seo-close-btn:hover {
	background: rgba(239, 68, 68, 0.8);
	border-color: #ef4444;
	transform: rotate(90deg);
}

/* Định dạng cấu trúc văn bản SEO (Googlebot & Người dùng) */
.seo-main-article {
	user-select: text;
	-webkit-user-select: text;
}

.seo-badge {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 4px 12px;
	background: rgba(56, 189, 248, 0.15);
	border: 1px solid rgba(56, 189, 248, 0.4);
	color: var(--seo-accent);
	border-radius: 999px;
	font-size: 0.76rem;
	font-weight: 700;
	letter-spacing: 0.5px;
	text-transform: uppercase;
	margin-bottom: 12px;
}

.seo-h1 {
	font-size: 1.65rem;
	font-weight: 800;
	line-height: 1.35;
	color: #ffffff;
	margin-bottom: 14px;
	background: linear-gradient(135deg, #ffffff 30%, #38bdf8 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}

.seo-lead {
	font-size: 0.95rem;
	line-height: 1.7;
	color: var(--seo-muted);
	margin-bottom: 24px;
}

.seo-highlight-box {
	background: rgba(56, 189, 248, 0.08);
	border-left: 4px solid var(--seo-accent);
	padding: 14px 18px;
	border-radius: 0 12px 12px 0;
	margin-bottom: 24px;
	font-size: 0.9rem;
	color: #e2e8f0;
}

.seo-h2 {
	font-size: 1.25rem;
	font-weight: 700;
	color: #ffffff;
	margin: 28px 0 14px;
	display: flex;
	align-items: center;
	gap: 8px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
	padding-bottom: 8px;
}

.seo-program-card {
	background: var(--seo-card-bg);
	border: 1px solid var(--seo-border);
	border-radius: 16px;
	padding: 18px;
	margin-bottom: 16px;
	transition: all 0.25s ease;
}

.seo-program-card:hover {
	border-color: rgba(56, 189, 248, 0.4);
	background: rgba(30, 41, 59, 0.85);
	transform: translateY(-2px);
}

.seo-program-card h3 {
	font-size: 1.05rem;
	font-weight: 700;
	color: #38bdf8;
	margin-bottom: 8px;
}

.seo-program-card p {
	font-size: 0.88rem;
	color: #cbd5e1;
	line-height: 1.6;
	margin-bottom: 10px;
}

.seo-program-meta {
	display: flex;
	gap: 12px;
	flex-wrap: wrap;
	font-size: 0.8rem;
	color: var(--seo-gold);
	font-weight: 600;
}

.seo-link-btn {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	margin-top: 10px;
	padding: 6px 14px;
	border-radius: 8px;
	background: rgba(236, 72, 153, 0.2);
	border: 1px solid rgba(236, 72, 153, 0.4);
	color: #f472b6;
	text-decoration: none;
	font-size: 0.82rem;
	font-weight: 700;
	transition: all 0.2s ease;
}

.seo-link-btn:hover {
	background: var(--seo-pink);
	color: #ffffff;
}

/* FAQ Accordion */
.seo-faq-item {
	background: var(--seo-card-bg);
	border: 1px solid var(--seo-border);
	border-radius: 12px;
	margin-bottom: 10px;
	overflow: hidden;
}

.seo-faq-question {
	width: 100%;
	padding: 14px 18px;
	text-align: left;
	background: transparent;
	border: none;
	color: #ffffff;
	font-size: 0.92rem;
	font-weight: 600;
	cursor: pointer;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
}

.seo-faq-question:hover {
	color: var(--seo-accent);
}

.seo-faq-answer {
	padding: 0 18px 14px;
	font-size: 0.88rem;
	line-height: 1.6;
	color: var(--seo-muted);
	border-top: 1px solid rgba(255, 255, 255, 0.05);
	padding-top: 12px;
}

/* Responsive */
@media (max-width: 768px) {
	.seo-toggle-btn {
		bottom: 80px;
		left: 16px;
		padding: 8px 14px;
		font-size: 0.8rem;
	}
	.seo-drawer-content {
		max-width: 100%;
		padding: 24px 18px 80px;
	}
	.seo-h1 {
		font-size: 1.35rem;
	}
}