/* ==========================================================================
   VINAGREEN 2026 — NEXT-GEN ECO-TECH ENTERPRISE DESIGN SYSTEM
   Phong cách: High-Tech Eco Enterprise (Đẳng cấp Doanh nghiệp FDI)
   Font chính thức: 'Be Vietnam Pro' (Tối ưu 100% chuẩn tiếng Việt & B2B)
   Tone: Forest Green (#0F5132) + Emerald (#10B981) + Orange CTA (#FF6D00)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400;1,600;1,700&display=swap');

:root {
  --font-display: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Color Palette */
  --midnight: #061A12;
  --midnight-card: #0D281E;
  --midnight-border: rgba(0, 210, 106, 0.2);
  --forest-900: #0A3622;
  --forest-800: #0F5132;
  
  --emerald-vibrant: #00D26A;
  --emerald-glow: rgba(0, 210, 106, 0.35);
  --cyan-tech: #00E5FF;
  --cyan-glow: rgba(0, 229, 255, 0.3);
  --amber-vibrant: #FF6D00;
  --amber-hover: #E65100;
  --amber-glow: rgba(255, 109, 0, 0.35);

  --bg-light: #F4F7F5;
  --bg-white: #FFFFFF;
  --text-dark: #091E16;
  --text-muted: #4B6358;
  --text-light: #718E82;
  --border-light: #E1EBE6;

  --shadow-sm: 0 2px 8px rgba(6, 26, 18, 0.06);
  --shadow-md: 0 8px 24px -4px rgba(6, 26, 18, 0.08);
  --shadow-lg: 0 16px 40px -8px rgba(6, 26, 18, 0.12);
  --shadow-glow: 0 0 35px rgba(0, 210, 106, 0.25);
  
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

ul {
  list-style: none;
}

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

.container {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   TOPBAR
   ========================================================================== */
.topbar {
  background: #04120C;
  color: #A3C9B8;
  font-size: 13px;
  border-bottom: 1px solid rgba(0, 210, 106, 0.12);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-info {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.topbar-info a {
  color: #D1E7DD;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.topbar-info a:hover {
  color: var(--emerald-vibrant);
}
.topbar-lang {
  display: flex;
  align-items: center;
  gap: 6px;
}
.topbar-lang a {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.topbar-lang a.active {
  background: var(--emerald-vibrant);
  color: #04120C;
}

/* ==========================================================================
   HEADER & NAVIGATION (GLASSMORPHIC STICKY)
   ========================================================================== */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 4px 20px rgba(6, 26, 18, 0.05);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1260px;
  margin: 0 auto;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  color: var(--midnight);
  font-size: 24px;
  letter-spacing: -0.5px;
}
.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}
.logo .mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0A3622 0%, #00D26A 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 16px rgba(0, 210, 106, 0.4);
}
.logo small {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 0.2px;
  margin-top: 1px;
}
.menu {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
  white-space: nowrap;
  flex-shrink: 0;
}
.menu li {
  white-space: nowrap;
  position: relative;
  list-style: none;
}
.menu a {
  color: var(--text-dark);
  font-size: 14.5px;
  font-weight: 700;
  position: relative;
  padding: 8px 0;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.menu a:hover, .menu a.active {
  color: var(--forest-900);
}
.menu a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--amber-vibrant);
  border-radius: var(--radius-full);
}
.menu .has-sub {
  position: relative;
}
.menu .sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(0,0,0,0.15);
  padding: 10px 8px;
  min-width: 290px;
  z-index: 9999;
  border: 1.5px solid var(--border-light);
  list-style: none;
}
.menu .has-sub:hover .sub, .menu .has-sub:focus-within .sub {
  display: block;
}
.menu .sub a {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-dark);
  border-bottom: none !important;
}
.menu .sub a:hover {
  background: rgba(0, 210, 106, 0.1);
  color: var(--forest-900);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 210, 106, 0.1);
  border: 1px solid rgba(0, 210, 106, 0.3);
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 13.5px;
  color: var(--forest-900);
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-vibrant);
  box-shadow: 0 0 0 0 rgba(0, 210, 106, 0.7);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 210, 106, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 210, 106, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 210, 106, 0); }
}
.btn-cta {
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--amber-vibrant) 0%, #FF8F00 100%);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 4px 16px var(--amber-glow);
  border: none;
  cursor: pointer;
}
.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px var(--amber-glow);
}
.burger {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--midnight);
  cursor: pointer;
}

/* ==========================================================================
   NEXT-GEN ECO-TECH HERO SECTION (DARK MIDNIGHT GLOW + HIGH-RES BENTO STAGE)
   ========================================================================== */
.hero-tech-sec {
  background: radial-gradient(circle at 85% 40%, rgba(0, 210, 106, 0.15) 0%, rgba(6, 26, 18, 0) 60%),
              radial-gradient(circle at 15% 80%, rgba(0, 229, 255, 0.1) 0%, rgba(6, 26, 18, 0) 50%),
              linear-gradient(180deg, #05150E 0%, #092418 100%);
  color: #fff;
  padding: 56px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero-tech-sec::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0, 210, 106, 0.12) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
  pointer-events: none;
}

.hero-tech-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* Left Hero: Typography & Glow CTAs */
.hero-tech-left {
  display: flex;
  flex-direction: column;
}
.hero-tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 210, 106, 0.12);
  border: 1px solid rgba(0, 210, 106, 0.35);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12.5px;
  font-weight: 800;
  color: var(--emerald-vibrant);
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  width: max-content;
  backdrop-filter: blur(8px);
}
.hero-tech-title {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.8px;
  color: #fff;
  margin-bottom: 16px;
}
.hero-tech-title .gradient-text {
  background: linear-gradient(135deg, #00D26A 0%, #00E5FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-tech-desc {
  font-size: 16.5px;
  color: #C0D8CC;
  line-height: 1.7;
  margin-bottom: 26px;
  max-width: 600px;
}

.hero-tech-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 30px;
}
.btn-glow-orange {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: linear-gradient(135deg, #FF6D00 0%, #FF8F00 100%);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 15px;
  box-shadow: 0 4px 20px var(--amber-glow);
  transition: all 0.25s ease;
}
.btn-glow-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--amber-glow);
}
.btn-tech-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  backdrop-filter: blur(8px);
}
.btn-tech-outline:hover {
  background: rgba(0, 210, 106, 0.15);
  border-color: var(--emerald-vibrant);
  color: var(--emerald-vibrant);
}

/* Quick Metrics Row in Hero */
.hero-tech-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.h-stat-num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  color: var(--emerald-vibrant);
  line-height: 1.1;
}
.h-stat-lbl {
  font-size: 12.5px;
  color: #9DBEB0;
  margin-top: 4px;
  line-height: 1.4;
}

/* Right Hero: High-Tech Interactive Stage Window */
.hero-stage-card {
  background: var(--midnight-card);
  border: 1px solid rgba(0, 210, 106, 0.3);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 210, 106, 0.15);
  overflow: hidden;
  position: relative;
}
.stage-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: rgba(4, 18, 12, 0.8);
  border-bottom: 1px solid rgba(0, 210, 106, 0.2);
  font-size: 12.5px;
}
.stage-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--emerald-vibrant);
  font-weight: 700;
}
.stage-view-port {
  position: relative;
  height: 380px;
  background: #000;
  overflow: hidden;
}
.stage-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease;
}
.stage-slide.active {
  opacity: 1;
  visibility: visible;
}
.stage-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Telemetry Badge Over Photo */
.telemetry-chip {
  position: absolute;
  background: rgba(6, 26, 18, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 210, 106, 0.35);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #fff;
  z-index: 10;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}
.telemetry-chip.chip-br {
  bottom: 16px;
  right: 16px;
}
.telemetry-chip.chip-tl {
  top: 16px;
  left: 16px;
}
.telemetry-chip b {
  display: block;
  font-size: 13.5px;
  color: var(--emerald-vibrant);
}
.telemetry-chip small {
  font-size: 11.5px;
  color: #C0D8CC;
}

/* 3 Stage Tab Controllers */
.stage-nav-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(4, 18, 12, 0.9);
  border-top: 1px solid rgba(0, 210, 106, 0.2);
}
.stage-tab-btn {
  padding: 12px 10px;
  border: none;
  background: none;
  color: #9DBEB0;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}
.stage-tab-btn:hover {
  color: #fff;
  background: rgba(0, 210, 106, 0.1);
}
.stage-tab-btn.active {
  color: var(--emerald-vibrant);
  background: rgba(0, 210, 106, 0.15);
  border-bottom: 2px solid var(--emerald-vibrant);
}

/* ==========================================================================
   SECTIONS CHUNG
   ========================================================================== */
.sec {
  padding: 80px 0;
}
.sec.alt {
  background: var(--bg-white);
}
.sec.dark-tech {
  background: #061A12;
  color: #fff;
}
.sec-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 210, 106, 0.1);
  color: var(--forest-900);
  border: 1px solid rgba(0, 210, 106, 0.3);
  font-size: 12.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 5px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}
.sec.dark-tech .sec-tag {
  color: var(--emerald-vibrant);
  background: rgba(0, 210, 106, 0.12);
}
.sec-title {
  font-size: 34px;
  font-weight: 900;
  color: var(--midnight);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.sec.dark-tech .sec-title {
  color: #fff;
}
.sec-sub {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.65;
}
.sec.dark-tech .sec-sub {
  color: #A3C9B8;
}

/* ==========================================================================
   BENTO GRID SERVICES (ĐỘT PHÁ GIAO DIỆN HIỆN ĐẠI)
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}
.bento-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  display: flex;
  flex-direction: column;
  position: relative;
}
.bento-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--emerald-vibrant);
}
.bento-card.col-7 { grid-column: span 7; }
.bento-card.col-5 { grid-column: span 5; }
.bento-card.col-4 { grid-column: span 4; }
.bento-card.col-8 { grid-column: span 8; }
.bento-card.col-6 { grid-column: span 6; }

.bento-img {
  height: 200px;
  overflow: hidden;
  position: relative;
  background: #E1EBE6;
}
.bento-card.col-7 .bento-img { height: 230px; }
.bento-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.bento-card:hover .bento-img img {
  transform: scale(1.06);
}
.bento-pill {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(6, 26, 18, 0.85);
  color: var(--emerald-vibrant);
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  backdrop-filter: blur(8px);
}
.bento-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.bento-body h3 {
  font-size: 18.5px;
  font-weight: 800;
  color: var(--midnight);
  margin-bottom: 8px;
}
.bento-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}
.bento-link {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 13.5px;
  color: var(--forest-900);
}
.bento-card:hover .bento-link {
  color: var(--amber-vibrant);
}

/* ==========================================================================
   ABOUT SPLIT (VỀ VINAGREEN)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.about-visual-stage {
  position: relative;
}
.about-img-hero {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  height: 400px;
}
.about-img-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-img-overlay-card {
  position: absolute;
  bottom: -24px;
  right: -20px;
  width: 50%;
  height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 4px solid #fff;
  box-shadow: var(--shadow-lg);
}
.about-img-overlay-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-badge-years {
  position: absolute;
  top: 20px;
  left: -16px;
  background: linear-gradient(135deg, var(--forest-900) 0%, #00D26A 100%);
  color: #fff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-weight: 800;
  font-size: 13px;
  line-height: 1.3;
  text-align: center;
}

.about-info h2 {
  font-size: 32px;
  font-weight: 900;
  color: var(--midnight);
  line-height: 1.3;
  margin: 12px 0 16px;
}
.about-info p {
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.7;
  margin-bottom: 20px;
}
.about-key-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 28px;
}
.about-kp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--midnight);
}
.about-kp-item span {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 210, 106, 0.15);
  color: var(--forest-900);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* ==========================================================================
   4 CORE VALUES WITH HD PHOTOS
   ========================================================================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.v-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.v-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--emerald-vibrant);
}
.v-card-img {
  height: 180px;
  overflow: hidden;
}
.v-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.v-card:hover .v-card-img img {
  transform: scale(1.06);
}
.v-card-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.v-tag {
  display: inline-block;
  background: rgba(0, 210, 106, 0.1);
  color: var(--forest-900);
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
  width: max-content;
}
.v-card-body h3 {
  font-size: 17.5px;
  font-weight: 800;
  color: var(--midnight);
  margin-bottom: 6px;
}
.v-card-body p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   EPC TECH BANNER (MIDNIGHT HIGHLIGHT)
   ========================================================================== */
.epc-tech-box {
  background: radial-gradient(circle at 10% 20%, rgba(0, 229, 255, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(0, 210, 106, 0.2) 0%, transparent 40%),
              linear-gradient(135deg, #05150E 0%, #0A2E1F 100%);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  color: #fff;
  border: 1px solid rgba(0, 210, 106, 0.3);
  box-shadow: var(--shadow-glow);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.epc-tech-box h2 {
  font-size: 32px;
  font-weight: 900;
  margin: 12px 0 14px;
}
.epc-tech-box p {
  font-size: 16px;
  color: #D1E7DD;
  max-width: 800px;
  margin: 0 auto 36px;
  line-height: 1.65;
}
.epc-step-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}
.epc-step-node {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(0, 210, 106, 0.25);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-sm);
  padding: 18px 12px;
}
.epc-step-node b {
  display: block;
  font-size: 14px;
  color: #fff;
  margin-bottom: 4px;
}
.epc-step-node span {
  font-size: 12px;
  color: var(--emerald-vibrant);
}

/* ==========================================================================
   24 PROJECTS TIÊU BIỂU + LIGHTBOX MODAL
   ========================================================================== */
.tabs-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.tab-btn {
  padding: 9px 24px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-light);
  background: #fff;
  color: var(--text-muted);
  font-family: inherit;
  font-weight: 800;
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.tab-btn:hover {
  border-color: var(--emerald-vibrant);
  color: var(--forest-900);
}
.tab-btn.active {
  background: var(--forest-900);
  border-color: var(--forest-900);
  color: #fff;
  box-shadow: 0 4px 14px rgba(10, 54, 34, 0.3);
}

.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proj-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.proj-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--emerald-vibrant);
}
.proj-img-wrap {
  position: relative;
  height: 200px;
  background: #000;
  overflow: hidden;
  cursor: pointer;
}
.proj-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.proj-card:hover .proj-img-wrap img {
  transform: scale(1.06);
}
.proj-zoom-hint {
  position: absolute;
  inset: 0;
  background: rgba(6, 26, 18, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 13.5px;
  opacity: 0;
  transition: opacity 0.2s ease;
  backdrop-filter: blur(4px);
  gap: 6px;
}
.proj-card:hover .proj-zoom-hint {
  opacity: 1;
}
.proj-num {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--forest-900);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
}
.proj-badge-cat {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--forest-900);
  font-size: 11.5px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}
.proj-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.proj-body h3 {
  font-size: 16.5px;
  font-weight: 800;
  color: var(--midnight);
  margin-bottom: 6px;
}
.proj-body p.client {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 14px;
  flex: 1;
}
.proj-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px dashed var(--border-light);
  padding-top: 12px;
  font-size: 12.5px;
}
.proj-spec-row .spec {
  font-weight: 800;
  color: var(--forest-900);
}
.proj-spec-row .link {
  color: var(--amber-vibrant);
  font-weight: 800;
}

/* ==========================================================================
   MODAL LIGHTBOX
   ========================================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(4, 18, 12, 0.88);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 24px;
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.modal-overlay.open {
  display: flex;
  opacity: 1;
}
.modal-box {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0,0,0,0.4);
  animation: popIn 0.25s ease;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background: var(--midnight);
  color: #fff;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.modal-head h3 {
  font-size: 17px;
  font-weight: 800;
}
.modal-close {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover {
  background: var(--amber-vibrant);
}
.modal-body {
  padding: 24px;
  text-align: center;
}
.modal-body img {
  width: 100%;
  max-height: 65vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--bg-light);
}
.modal-foot {
  padding: 16px 24px;
  background: var(--bg-light);
  border-top: 1px solid var(--border-light);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  color: var(--text-muted);
}
@keyframes popIn {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  background: #04120C;
  color: #fff;
  border-top: 1px solid rgba(0, 210, 106, 0.15);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding: 60px 0 40px;
}
footer h4 {
  font-size: 16.5px;
  font-weight: 800;
  margin-bottom: 18px;
  color: #fff;
}
footer p, footer li, footer a {
  font-size: 14px;
  color: #A3C9B8;
  line-height: 1.8;
}
footer li {
  margin-bottom: 8px;
}
footer a:hover {
  color: var(--emerald-vibrant);
}
.foot-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #718E82;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-tech-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-tech-title { font-size: 34px; }
  .stage-view-port { height: 320px; }
  .bento-card.col-7, .bento-card.col-5, .bento-card.col-4, .bento-card.col-8, .bento-card.col-6 {
    grid-column: span 6;
  }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .epc-step-row { grid-template-columns: repeat(3, 1fr); }
  .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }
  .menu.open { display: flex; }
  .burger { display: block; }
  .nav-hotline { display: none; }
  
  .hero-tech-title { font-size: 28px; }
  .hero-tech-stats { grid-template-columns: 1fr; gap: 12px; }
  .stage-view-port { height: 260px; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-card.col-7, .bento-card.col-5, .bento-card.col-4, .bento-card.col-8, .bento-card.col-6 {
    grid-column: span 1;
  }
  .values-grid { grid-template-columns: 1fr; }
  .epc-step-row { grid-template-columns: 1fr; }
  .proj-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
}