/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */
.giang-vien-page-wrapper {
	--gv-color-green: #095627;
	--gv-color-green-hover: #07401d;
	--gv-color-orange: #d88800;
	--gv-color-blue: #0d3966;
	--gv-color-text: #1a1a1a;
	--gv-color-subtitle: #555555;
	--gv-color-white: #ffffff;
	--gv-font-primary: 'Inter', system-ui, -apple-system, sans-serif;
	--gv-transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	--gv-max-width: 1200px;
}

/* ==========================================================================
   2. GLOBAL RESETS & LANDMARK
   ========================================================================== */
.giang-vien-page-wrapper {
	font-family: var(--gv-font-primary);
	color: var(--gv-color-text);
	line-height: 1.6;
	background-color: var(--gv-color-white);
	padding: 80px 0;
	overflow-x: hidden;
}

.giang-vien-page-wrapper *,
.giang-vien-page-wrapper *::before,
.giang-vien-page-wrapper *::after {
	box-sizing: border-box;
}

.giang-vien-page-wrapper .lecturers-container {
	width: 100%;
	max-width: var(--gv-max-width);
	margin: 0 auto;
	padding: 0 24px;
}

/* ==========================================================================
   3. PAGE HEADER
   ========================================================================== */
.giang-vien-page-wrapper .lecturers-header {
	text-align: center;
	margin-bottom: 60px;
}

.giang-vien-page-wrapper .lecturers-title {
	font-size: clamp(2rem, 4vw, 2.5rem);
	font-weight: 800;
	color: var(--gv-color-green);
	margin: 0 0 18px 0;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.giang-vien-page-wrapper .lecturers-subtitle {
	font-size: clamp(0.95rem, 2.5vw, 1.1rem);
	font-weight: 400;
	color: var(--gv-color-subtitle);
	max-width: 780px;
	margin: 0 auto;
	line-height: 1.7;
}

/* ==========================================================================
   4. LECTURERS GRID
   ========================================================================== */
.giang-vien-page-wrapper .lecturers-grid {
	display: grid;
	/* Fixed-width cards centered: empty tracks collapse so few cards stay centered, never full width */
	grid-template-columns: repeat(auto-fit, 280px);
	justify-content: center;
	gap: 48px 32px;
}

/* ==========================================================================
   5. LECTURER CARD
   ========================================================================== */
.lecturer-card {
	background: transparent;
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	padding: 4px 12px 0;
	transition: var(--gv-transition-base);
}

.lecturer-card:hover {
	transform: translateY(-6px);
}

.lecturer-card-photo {
	width: 196px;
	height: 196px;
	margin: 0 auto 22px;
	padding: 6px;
	border-radius: 50%;
	background: linear-gradient(135deg, var(--gv-color-green) 0%, #0d7a41 55%, var(--gv-color-orange) 100%);
	display: flex;
	align-items: center;
	justify-content: center;
	transition: var(--gv-transition-base);
	box-shadow: 0 6px 20px rgba(9, 86, 39, 0.18);
}

.lecturer-card:hover .lecturer-card-photo {
	transform: scale(1.045) rotate(2deg);
	box-shadow: 0 10px 28px rgba(9, 86, 39, 0.28);
}

.lecturer-card-photo-img {
	width: 100%;
	height: 100%;
	border-radius: 50%;
	object-fit: cover;
	border: 4px solid var(--gv-color-white);
	background: var(--gv-color-white);
}

.lecturer-card-photo-placeholder {
	width: 100%;
	height: 100%;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, var(--gv-color-green) 0%, #1a6338 100%);
	border: 4px solid var(--gv-color-white);
}

.lecturer-card-photo-placeholder span {
	font-size: 3.2rem;
	font-weight: 900;
	color: var(--gv-color-orange);
	line-height: 1;
}

.lecturer-card-body {
	flex: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 6px;
}

.lecturer-card-name {
	margin: 0;
	font-size: 1.15rem;
	font-weight: 700;
	color: var(--gv-color-text);
	text-transform: uppercase;
	letter-spacing: 0.5px;
	line-height: 1.2;
}

.lecturer-card-org {
	margin: 0;
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--gv-color-green);
	opacity: 0.75;
}

.lecturer-card-title {
	margin: 0;
	font-size: 0.92rem;
	font-weight: 600;
	color: var(--gv-color-orange);
}

.lecturer-card-btn {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	margin-top: 12px;
	padding: 10px 22px;
	background: var(--gv-color-green);
	color: var(--gv-color-white);
	border: none;
	border-radius: 100px;
	font-size: 0.92rem;
	font-weight: 700;
	cursor: pointer;
	transition: var(--gv-transition-base);
}

.lecturer-card-btn:hover {
	background: var(--gv-color-orange);
	color: var(--gv-color-white);
	transform: translateY(-2px);
}

/* ==========================================================================
   8. RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 992px) {
	.giang-vien-page-wrapper {
		padding: 60px 0;
	}
	.giang-vien-page-wrapper .lecturers-header {
		margin-bottom: 40px;
	}
}

@media (max-width: 640px) {
	.giang-vien-page-wrapper .lecturers-grid {
		grid-template-columns: minmax(0, 280px);
	}
}

/* ==========================================================================
   9. LECTURER DETAIL MODAL
   ========================================================================== */
.lecturer-modal {
	position: fixed;
	inset: 0;
	z-index: 9000;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
}

.lecturer-modal[hidden] {
	display: none;
}

.lecturer-modal__overlay {
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, 0.62);
	cursor: pointer;
}

.lecturer-modal__dialog {
	position: relative;
	background: var(--gv-color-white);
	border-radius: 20px;
	width: 100%;
	max-width: 700px;
	max-height: 90vh;
	overflow-y: auto;
	z-index: 1;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

.lecturer-modal__close {
	position: absolute;
	top: 14px;
	right: 14px;
	background: #f4f9f6;
	border: none;
	border-radius: 50%;
	width: 38px;
	height: 38px;
	font-size: 1.5rem;
	line-height: 1;
	color: var(--gv-color-green);
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 2;
	transition: background 0.18s;
}

.lecturer-modal__close:hover {
	background: #d9ede2;
}

.lecturer-modal__content {
	padding: 40px 36px 44px;
}

.lecturer-modal__header {
	display: flex;
	gap: 24px;
	align-items: flex-start;
	margin-bottom: 28px;
	padding-bottom: 24px;
	border-bottom: 2px solid #edf5f0;
}

.lecturer-modal__photo {
	width: 110px;
	height: 110px;
	border-radius: 50%;
	overflow: hidden;
	flex-shrink: 0;
	background: #edf5f0;
	display: flex;
	align-items: center;
	justify-content: center;
}

.lecturer-modal__photo-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.lecturer-modal__photo-placeholder {
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, var(--gv-color-green) 0%, #1a6338 100%);
}

.lecturer-modal__photo-placeholder span {
	font-size: 2.4rem;
	font-weight: 900;
	color: var(--gv-color-orange);
}

.lecturer-modal__identity {
	flex: 1;
	min-width: 0;
	padding-top: 6px;
}

.lecturer-modal__name {
	margin: 0 0 6px;
	font-size: 1.35rem;
	font-weight: 900;
	color: var(--gv-color-green);
	line-height: 1.2;
}

.lecturer-modal__org {
	margin: 0 0 4px;
	font-size: 0.88rem;
	font-weight: 600;
	color: var(--gv-color-orange);
	line-height: 1.4;
}

.lecturer-modal__role {
	margin: 0;
	font-size: 0.88rem;
	color: #555;
	line-height: 1.4;
}

.lecturer-modal__bio {
	font-size: 0.95rem;
	color: #333;
	line-height: 1.75;
}

.lecturer-modal__bio p {
	margin: 0 0 10px;
}

.lecturer-modal__bio strong,
.lecturer-modal__bio b {
	color: var(--gv-color-green);
}

@media (max-width: 560px) {
	.lecturer-modal__header {
		flex-direction: column;
		align-items: center;
		text-align: center;
	}

	.lecturer-modal__content {
		padding: 28px 20px 32px;
	}

	.lecturer-modal__name {
		font-size: 1.15rem;
	}
}