/* ============================================
   DR. LƯƠNG — Premium Medical Landing Page
   Design System & Stylesheet
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@700;800&display=swap');

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Colors */
  --primary: #1B4FD8;
  --primary-light: #3B82F6;
  --primary-dark: #1338B0;
  --accent: #F59E0B;
  --accent-light: #FCD34D;
  --dark: #040912;
  --dark-2: #0A1628;
  --dark-3: #0F1F3D;
  --surface: #111827;
  --surface-2: #1a2744;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text-primary: #F9FAFB;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --success: #10B981;
  --white: #ffffff;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #040912 0%, #0A1628 40%, #1B4FD8 100%);
  --gradient-blue: linear-gradient(135deg, #1B4FD8 0%, #3B82F6 100%);
  --gradient-gold: linear-gradient(135deg, #F59E0B 0%, #FCD34D 100%);
  --gradient-card: linear-gradient(145deg, rgba(27, 79, 216, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(27, 79, 216, 0.3) 0%, transparent 70%);

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Playfair Display', serif;

  /* Spacing */
  --section-py: 100px;
  --container-max: 1200px;
  --container-px: 24px;

  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-blue: 0 8px 40px rgba(27, 79, 216, 0.4);
  --shadow-gold: 0 8px 30px rgba(245, 158, 11, 0.3);
  --border-radius: 16px;
  --border-radius-sm: 8px;
  --border-radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul { list-style: none; }

/* --- Utility Classes --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-dark {
  background-color: var(--dark-2);
}

.section-darker {
  background-color: var(--dark-3);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gradient-gold);
}

.section-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.section-title span {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.text-center .section-subtitle {
  margin: 0 auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: var(--transition);
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: var(--gradient-blue);
  color: var(--white);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 48px rgba(27, 79, 216, 0.6);
}

.btn-gold {
  background: var(--gradient-gold);
  color: var(--dark);
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(245, 158, 11, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--primary-light);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 44px;
  font-size: 16px;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============================================
   NAVIGATION
   ============================================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-slow);
}

#navbar.scrolled {
  background: rgba(4, 9, 18, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 14px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-logo img.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
}

.nav-logo img.logo-text {
  height: 28px;
  width: auto;
  filter: brightness(10);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-menu a:hover {
  color: var(--white);
  background: var(--glass);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.nav-phone svg {
  width: 16px;
  height: 16px;
}

/* Mobile Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  padding-top: 100px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  filter: blur(2px);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(4, 9, 18, 0.95) 0%, rgba(10, 22, 40, 0.85) 50%, rgba(27, 79, 216, 0.3) 100%);
}

/* Glow orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 1;
}

.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(27, 79, 216, 0.25) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
  bottom: 0;
  left: 0;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  min-height: calc(100vh - 100px);
}

.hero-content {
  padding: 60px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 12px;
}

.hero-title .gradient-text {
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title .accent-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 52px;
}

/* Stats bar */
.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 36px;
  border-top: 1px solid var(--glass-border);
}

.stat-item .stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-item .stat-number span {
  color: var(--accent);
}

.stat-item .stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Doctor photo side */
.hero-visual {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  position: relative;
  height: 100%;
  min-height: 500px;
}

.hero-doctor-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero-doctor-glow {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(ellipse at bottom, rgba(27, 79, 216, 0.4) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 0;
}

.hero-doctor-img {
  position: relative;
  z-index: 1;
  max-height: 600px;
  width: auto;
  filter: drop-shadow(0 20px 60px rgba(27, 79, 216, 0.5));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

/* Floating cards */
.hero-card {
  position: absolute;
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 14px 18px;
  z-index: 2;
  animation: float-card 3s ease-in-out infinite;
}

.hero-card-1 {
  top: 20%;
  left: -20px;
  animation-delay: 0s;
}

.hero-card-2 {
  bottom: 30%;
  right: -20px;
  animation-delay: 1.5s;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.hero-card .card-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-blue);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.hero-card .card-icon svg {
  width: 18px;
  height: 18px;
  color: white;
}

.hero-card .card-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.hero-card .card-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--primary-light);
  border-radius: 2px;
  animation: scroll-anim 1.5s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

/* ============================================
   ABOUT / DR. LƯƠNG SECTION
   ============================================ */
#about {
  background: var(--dark-2);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image-wrap {
  position: relative;
}

.about-image-main {
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image-main img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  filter: brightness(0.9);
  transition: var(--transition-slow);
}

.about-image-main:hover img {
  filter: brightness(1);
  transform: scale(1.02);
}

.about-badge-card {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--gradient-blue);
  border-radius: var(--border-radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-blue);
  min-width: 180px;
}

.about-badge-card .badge-number {
  font-size: 40px;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
}

.about-badge-card .badge-label {
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  margin-top: 4px;
}

.about-credentials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 28px 0;
}

.credential-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.credential-item:hover {
  background: rgba(27, 79, 216, 0.1);
  border-color: rgba(27, 79, 216, 0.3);
}

.credential-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-blue);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.credential-icon svg {
  width: 16px;
  height: 16px;
  color: white;
}

.credential-text .cred-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.credential-text .cred-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
#services {
  background: var(--dark);
}

.services-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 60px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--gradient-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(27, 79, 216, 0.3);
  box-shadow: var(--shadow-blue);
  background: rgba(27, 79, 216, 0.08);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-icon-bg {
  background: var(--gradient-blue);
  padding: 16px;
}

.service-number {
  font-size: 64px;
  font-weight: 900;
  color: rgba(27, 79, 216, 0.08);
  position: absolute;
  top: 16px;
  right: 20px;
  line-height: 1;
  font-family: var(--font-display);
  transition: var(--transition);
}

.service-card:hover .service-number {
  color: rgba(27, 79, 216, 0.12);
}

.service-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.service-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  margin-top: 20px;
  transition: var(--transition);
}

.service-link svg {
  width: 14px;
  height: 14px;
  transition: var(--transition);
}

.service-card:hover .service-link {
  gap: 10px;
}

/* ============================================
   RESULTS / GALLERY SECTION
   ============================================ */
#results {
  background: var(--dark-2);
}

.results-header {
  text-align: center;
  margin-bottom: 60px;
}

.results-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.result-stat {
  text-align: center;
  padding: 28px 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.result-stat:hover {
  border-color: rgba(27, 79, 216, 0.4);
  background: rgba(27, 79, 216, 0.08);
  transform: translateY(-4px);
}

.result-stat .stat-number {
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 8px;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-stat .stat-suffix {
  font-size: 28px;
  font-weight: 900;
}

.result-stat .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: 16px;
}

.gallery-item {
  border-radius: var(--border-radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition-slow);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4,9,18,0.85) 0%, rgba(4,9,18,0.2) 50%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  z-index: 1;
  transform: translateY(16px);
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
  opacity: 1;
}

.gallery-overlay span {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

/* Tall item: chiếm 2 hàng — dùng cho ảnh portrait dọc */
.gallery-item.g-tall {
  grid-row: span 2;
}

/* Wide item: chiếm 2 cột — dùng cho ảnh landscape ngang */
.gallery-item.g-wide {
  grid-column: span 2;
}

/* ============================================
   TIMELINE / PROCESS SECTION
   ============================================ */
#process {
  background: var(--dark);
  overflow: hidden;
}

.process-header {
  text-align: center;
  margin-bottom: 80px;
}

.timeline-wrapper {
  position: relative;
  padding: 40px 0;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--primary) 20%, var(--primary) 80%, transparent);
  transform: translateX(-50%);
}

.timeline-steps {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.timeline-step {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
}

.timeline-step:nth-child(even) .step-content {
  order: 3;
}

.timeline-step:nth-child(even) .step-image {
  order: 1;
}

.step-content {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
  padding: 32px;
  position: relative;
  transition: var(--transition);
}

.step-content:hover {
  border-color: rgba(27, 79, 216, 0.3);
  background: rgba(27, 79, 216, 0.06);
}

.step-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 10px;
}

.step-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.step-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  z-index: 1;
}

.step-circle {
  width: 60px;
  height: 60px;
  background: var(--gradient-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: white;
  box-shadow: var(--shadow-blue);
  position: relative;
  z-index: 1;
}

.step-image {
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.step-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition-slow);
}

.step-image:hover img {
  transform: scale(1.05);
}

/* ============================================
   MEDIA / PRESS SECTION
   ============================================ */
#media {
  background: var(--dark-2);
}

.media-header {
  text-align: center;
  margin-bottom: 56px;
}

.media-logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.media-logo-item {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 28px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}

.media-logo-item:hover {
  border-color: rgba(27, 79, 216, 0.4);
  background: rgba(27, 79, 216, 0.05);
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.media-logo-item img {
  max-height: 48px;
  width: auto;
  filter: grayscale(100%) brightness(0.6);
  transition: var(--transition);
  object-fit: contain;
}

.media-logo-item:hover img {
  filter: grayscale(0%) brightness(1);
}

.media-happy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 48px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
}

.media-happy img {
  border-radius: var(--border-radius);
  width: 100%;
  object-fit: cover;
  max-height: 320px;
}

.media-happy-content .section-label {
  margin-bottom: 12px;
}

.media-happy-content .section-title {
  font-size: 32px;
  margin-bottom: 16px;
}

.media-happy-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.media-happy-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.media-happy-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   TESTIMONIALS & FAQ
   ============================================ */
#faq {
  background: var(--dark);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(27, 79, 216, 0.4);
  background: rgba(27, 79, 216, 0.06);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-icon svg {
  width: 14px;
  height: 14px;
  color: var(--primary-light);
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  background: var(--gradient-blue);
  border-color: transparent;
}

.faq-item.open .faq-icon svg {
  color: white;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
}

/* Testimonials */
.testimonials-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testimonial-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.03);
}

.stars {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
}

.stars svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
  fill: var(--accent);
}

.testimonial-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 16px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-avatar {
  width: 36px;
  height: 36px;
  background: var(--gradient-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.author-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.author-info {
  font-size: 11px;
  color: var(--text-muted);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
#contact {
  background: var(--dark-2);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info .section-title {
  font-size: 38px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 32px 0;
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.contact-channel:hover {
  border-color: rgba(27, 79, 216, 0.4);
  background: rgba(27, 79, 216, 0.08);
  transform: translateX(8px);
}

.channel-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-icon.blue { background: var(--gradient-blue); }
.channel-icon.green { background: linear-gradient(135deg, #00b09b, #10B981); }
.channel-icon.gold { background: var(--gradient-gold); }

.channel-icon svg {
  width: 22px;
  height: 22px;
  color: white;
}

.channel-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.channel-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.channel-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
  padding: 40px;
}

.form-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--glass-border);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-primary);
  font-family: var(--font-primary);
  outline: none;
  transition: var(--transition);
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-light);
  background: rgba(27, 79, 216, 0.06);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select option {
  background: var(--surface);
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-submit {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 15px;
  border-radius: 12px;
}

/* ============================================
   FOOTER
   ============================================ */
#footer {
  background: var(--dark);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo img {
  height: 36px;
  width: auto;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 260px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.social-btn {
  width: 36px;
  height: 36px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}

.social-btn:hover {
  background: var(--gradient-blue);
  border-color: transparent;
}

.social-btn svg, .social-btn img {
  width: 16px;
  height: 16px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--white);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}

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

/* ============================================
   FLOATING CONTACT BAR
   ============================================ */
.float-contact {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.float-btn:hover {
  transform: scale(1.1);
}

.float-btn svg {
  width: 22px;
  height: 22px;
  color: white;
}

.float-btn img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.float-phone { background: var(--gradient-blue); }
.float-zalo { background: linear-gradient(135deg, #00b4d8, #0096c7); }

.float-tooltip {
  position: absolute;
  right: 64px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--dark-2);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.float-btn:hover .float-tooltip {
  opacity: 1;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  :root { --section-py: 72px; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { justify-content: center; min-height: 300px; }
  .hero-doctor-img { max-height: 360px; }
  .hero-card { display: none; }
  .hero-stats { gap: 24px; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-badge-card { right: 0; }

  .results-stats { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 240px; }
  .gallery-item.g-tall { grid-row: span 1; }
  .gallery-item.g-wide { grid-column: span 2; }

  .timeline-line { display: none; }
  .timeline-step { grid-template-columns: 1fr; gap: 20px; }
  .timeline-step:nth-child(even) .step-content,
  .timeline-step:nth-child(even) .step-image { order: unset; }
  .step-node { display: none; }

  .media-logos { grid-template-columns: repeat(2, 1fr); }
  .media-happy { grid-template-columns: 1fr; }

  .faq-grid { grid-template-columns: 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 768px) {
  :root { --section-py: 56px; }

  .nav-menu { display: none; }
  .nav-toggle { display: flex; }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    top: 72px;
    background: rgba(4, 9, 18, 0.97);
    backdrop-filter: blur(20px);
    padding: 32px 24px;
    gap: 4px;
    z-index: 999;
  }

  .nav-menu.open a {
    font-size: 18px;
    padding: 14px 16px;
  }

  .nav-phone { display: none; }

  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 16px; }
  .hero-cta { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }

  .services-header { flex-direction: column; align-items: flex-start; }
  .services-grid { grid-template-columns: 1fr; }

  .results-stats { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; }
  .gallery-item.g-tall { grid-row: span 1; }
  .gallery-item.g-wide { grid-column: span 2; }

  .media-logos { grid-template-columns: repeat(2, 1fr); }

  .contact-form-wrap { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .results-stats { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 260px; }
  .gallery-item.g-tall, .gallery-item.g-wide { grid-row: span 1; grid-column: span 1; }

  .about-credentials { grid-template-columns: 1fr; }
}

/* ============================================
   MEDIA / PRESS SECTION
   ============================================ */

/* Logo Strip */
.media-logo-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 40px 0;
  padding: 24px 32px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
}

.media-logo-item {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.media-logo-item:hover {
  color: var(--white);
}

.media-logo-sep {
  color: var(--accent);
  font-size: 8px;
  opacity: 0.6;
}

/* Cards Grid — 3 cột đều */
.media-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Card thứ 7 căn giữa hàng cuối */
.media-cards-grid .media-card:last-child:nth-child(3n+1) {
  grid-column: 2;
}

.media-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.media-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, transparent, rgba(59,130,246,0.3), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.media-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 28px 64px rgba(0,0,0,0.45), 0 0 0 1px rgba(59,130,246,0.25);
  border-color: rgba(59, 130, 246, 0.35);
}

.media-card:hover::before {
  opacity: 1;
}

.media-card-img {
  position: relative;
  overflow: hidden;
  background: var(--dark-2);
}

.media-card-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.media-card:hover .media-card-img img {
  transform: scale(1.06);
}

/* Dark overlay on image */
.media-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4,9,18,0.7) 0%, transparent 60%);
  pointer-events: none;
}

/* Badge chips */
.media-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  color: #fff;
  backdrop-filter: blur(8px);
}

.media-badge-vtv   { background: rgba(27, 79, 216, 0.9); }
.media-badge-blue  { background: rgba(37, 99, 235, 0.9); }
.media-badge-red   { background: rgba(220, 38, 38, 0.9); }
.media-badge-green { background: rgba(16, 185, 129, 0.9); }
.media-badge-gold  { background: rgba(245, 158, 11, 0.9); }

/* Play button (featured) */
.media-card-play {
  position: absolute;
  bottom: 14px;
  right: 14px;
  width: 46px;
  height: 46px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: background 0.3s ease, transform 0.3s ease;
}

.media-card:hover .media-card-play {
  background: var(--primary);
  transform: scale(1.1);
}

/* Card Info */
.media-card-info {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.media-card-source {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}

.source-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.source-dot-blue  { background: #3B82F6; }
.source-dot-red   { background: #EF4444; }
.source-dot-green { background: #10B981; }
.source-dot-gold  { background: #F59E0B; }

.media-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  flex: 1;
}

.media-card-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  transition: gap 0.2s ease;
  margin-top: 4px;
}

.media-card:hover .media-card-link {
  gap: 10px;
}

/* ============================================
   ZALO CTA BOX
   ============================================ */
.contact-zalo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.zalo-cta-box {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 24px;
  padding: 48px 40px;
  text-align: center;
  max-width: 480px;
  width: 100%;
}

.zalo-cta-icon {
  width: 80px;
  height: 80px;
  background: rgba(0, 200, 0, 0.1);
  border: 2px solid rgba(0, 200, 0, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.zalo-cta-icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.zalo-cta-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.zalo-cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
}

.zalo-cta-desc strong {
  color: var(--accent);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

.zalo-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
  text-align: left;
}

.zalo-feature {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 12px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
}

/* ============================================
   RESPONSIVE — MEDIA
   ============================================ */
@media (max-width: 900px) {
  .media-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  /* Reset centering on tablet */
  .media-cards-grid .media-card:last-child:nth-child(3n+1) {
    grid-column: auto;
  }
  /* Center last odd card on 2-col */
  .media-cards-grid .media-card:last-child:nth-child(2n+1) {
    grid-column: 1 / -1;
    max-width: calc(50% - 12px);
    margin: 0 auto;
  }
}

@media (max-width: 600px) {
  .media-cards-grid {
    grid-template-columns: 1fr;
  }
  .media-cards-grid .media-card:last-child:nth-child(2n+1) {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
  .media-cards-grid .media-card:last-child:nth-child(3n+1) {
    grid-column: auto;
  }
  .zalo-cta-box {
    padding: 32px 24px;
  }
  .zalo-features {
    grid-template-columns: 1fr;
  }
}