/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Brand color palette */
  --primary-dark: #0A1E4F;
  --primary: #1E40AF;
  --accent: #F59E0B;
  --text-dark: #1E293B;
  --text-muted: #64748B;
  --bg-white: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-dark: #0F172A;

  /* Legacy blue vars (kept for existing components) */
  --blue-900: #0A1E4F;
  --blue-800: #0d2144;
  --blue-700: #1a3a6e;
  --blue-600: #1e4d9e;
  --blue-500: #1E40AF;
  --blue-400: #3b82f6;
  --blue-300: #93c5fd;
  --blue-200: #bfdbfe;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;

  --gray-900: #111827;
  --gray-800: #1f2937;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50:  #f9fafb;

  --white: #ffffff;
  --line-green: #06c755;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.08);
  --shadow-blue: 0 8px 32px rgba(30,64,175,.25);

  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

body {
  font-family: 'Prompt', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-alt { background: var(--gray-50); }

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  background: var(--blue-100);
  color: var(--blue-600);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--gray-600);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: 'Prompt', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue-500);
  color: var(--white);
  border-color: var(--blue-500);
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(37,99,235,.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.6);
}

.btn-outline:hover {
  background: var(--white);
  color: #0A1E4F;
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--line-green);
  color: var(--white);
  padding: 13px 24px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  width: 100%;
  transition: all var(--transition);
}

.btn-line:hover {
  background: #05b04a;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6,199,85,.35);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 30, 79, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-th {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--white);
}

.logo-en {
  font-size: 0.7rem;
  color: var(--blue-300);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ===== NAVBAR BRAND (logo image) ===== */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

.navbar-brand:hover { opacity: 0.85; }

.navbar-logo {
  height: 48px;
  width: auto;
  border-radius: 8px;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name-th {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.brand-name-en {
  font-size: 11px;
  font-weight: 500;
  color: #94A3B8;
  letter-spacing: 1px;
  text-transform: uppercase;
}

@media (max-width: 480px) {
  .brand-text { display: none; }
  .navbar-logo { height: 40px; }
}

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

.nav-links a {
  color: rgba(255,255,255,.85);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover { color: var(--white); background: rgba(255,255,255,.1); }

.btn-nav {
  background: var(--blue-500) !important;
  color: var(--white) !important;
  font-weight: 700 !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-md) !important;
}

.btn-nav:hover {
  background: var(--blue-400) !important;
  transform: none !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

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

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: url('images/projects/vichaiyut-opd-after.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
  padding-top: 70px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 30, 79, 0.92) 0%, rgba(10, 30, 79, 0.80) 100%);
  z-index: 0;
}

.hero-grid-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px max(5%, 24px);
  max-width: 860px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #CBD5E1;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 24px;
  color: #94A3B8;
  font-weight: 300;
  line-height: 1.4;
  margin: 0;
}

.hero-tagline {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin-top: 24px;
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #F59E0B;
  color: var(--white);
  border: 2px solid #F59E0B;
  padding: 16px 40px;
  border-radius: 8px;
  font-family: 'Prompt', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.45);
}

.hero-stats {
  display: flex;
  align-items: flex-start;
  gap: 48px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat strong {
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}

.stat span {
  font-size: 0.875rem;
  color: #94A3B8;
  margin-top: 6px;
}

.stat-divider { display: none; }

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  z-index: 2;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.4);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transform: rotate(45deg);
}

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

/* ===== ABOUT ===== */
.about-layout {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: 64px;
  align-items: center;
}

.about-text .section-tag {
  margin-bottom: 20px;
}

.about-heading {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: #1E293B;
  line-height: 1.3;
  margin-bottom: 28px;
}

.about-para {
  font-size: 17px;
  line-height: 1.8;
  color: #64748B;
  margin-bottom: 18px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}

.about-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: #F8FAFC;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.feature-text h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #1E293B;
  margin-bottom: 4px;
}

.feature-text p {
  font-size: 0.85rem;
  color: #64748B;
  line-height: 1.6;
  margin: 0;
}

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

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

.about-img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(10, 30, 79, 0.15);
  display: block;
}

.about-float-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: #ffffff;
  padding: 20px 24px;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #1E293B;
  white-space: nowrap;
  z-index: 1;
}

.float-check {
  width: 36px;
  height: 36px;
  background: #F59E0B;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

/* ===== SERVICES ===== */
.services {
  padding: 100px 0;
  background: #F8FAFC;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: white;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(10, 30, 79, 0.06);
  border: 2px solid transparent;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(10, 30, 79, 0.15);
  border-color: #F59E0B;
}

.service-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: #E2E8F0;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-card:hover .service-image img {
  transform: scale(1.08);
}

.service-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
}

.service-tag {
  display: inline-block;
  padding: 6px 14px;
  background: #F59E0B;
  color: white;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.service-content {
  padding: 28px;
}

.service-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.service-content h3 {
  font-size: 22px;
  color: #0A1E4F;
  margin: 0 0 12px;
  font-weight: 700;
}

.service-content p {
  font-size: 15px;
  color: #64748B;
  line-height: 1.7;
  margin: 0 0 20px;
}

.service-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.service-features li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 14px;
  color: #475569;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #F59E0B;
  font-weight: 700;
}

@media (max-width: 968px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 580px) {
  .services-grid { grid-template-columns: 1fr; }
  .service-content { padding: 24px; }
}

/* ===== PORTFOLIO ===== */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  background: var(--white);
  border: 1px solid var(--gray-300);
  color: var(--gray-600);
  padding: 8px 20px;
  border-radius: 100px;
  font-family: 'Prompt', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--blue-500);
  border-color: var(--blue-500);
  color: var(--white);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  background: var(--white);
  transition: all var(--transition);
}

.portfolio-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.portfolio-card.hidden, .portfolio-item.hidden { display: none; }

.portfolio-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.portfolio-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-placeholder svg {
  width: 64px;
  height: 64px;
  opacity: 0.5;
}

.electrical-bg { background: linear-gradient(135deg, #78350f, #ca8a04); }
.hvac-bg       { background: linear-gradient(135deg, #1e3a8a, #2563eb); }
.cctv-bg       { background: linear-gradient(135deg, #7f1d1d, #dc2626); }
.network-bg    { background: linear-gradient(135deg, #4a1d96, #9333ea); }
.plumbing-bg   { background: linear-gradient(135deg, #14532d, #16a34a); }

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 40, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio-card:hover .portfolio-overlay { opacity: 1; }

.portfolio-overlay span {
  color: var(--white);
  font-weight: 700;
  font-size: 0.95rem;
  background: rgba(255,255,255,.15);
  padding: 10px 24px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,.3);
}

.portfolio-info {
  padding: 20px 24px;
}

.portfolio-tag {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 10px;
}

.portfolio-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.portfolio-info p {
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.contact-card, .contact-info-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.contact-card h3, .contact-info-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  margin-bottom: 12px;
  transition: all var(--transition);
  cursor: pointer;
}

.contact-item:hover {
  border-color: var(--blue-300);
  background: var(--blue-50);
  transform: translateX(4px);
}

.line-btn:hover {
  border-color: #06c755 !important;
  background: #f0fdf4 !important;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.contact-item-icon svg {
  width: 22px;
  height: 22px;
  color: var(--blue-600);
}

.line-icon {
  background: transparent !important;
  padding: 0;
  width: 44px;
  height: 44px;
}

.line-icon svg {
  width: 44px !important;
  height: 44px !important;
  border-radius: var(--radius-sm);
}

.contact-item-text {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.contact-item-text strong {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-item-text span {
  font-size: 1rem;
  color: var(--gray-900);
  font-weight: 600;
}

.contact-item-arrow {
  color: var(--gray-400);
  font-size: 1.1rem;
  transition: transform var(--transition);
}

.contact-item:hover .contact-item-arrow {
  transform: translateX(4px);
  color: var(--blue-500);
}

.info-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
}

.info-row:last-of-type { border-bottom: none; }

.info-row svg {
  width: 20px;
  height: 20px;
  color: var(--blue-500);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-row div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.info-row strong {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 600;
}

.info-row span {
  font-size: 0.95rem;
  color: var(--gray-800);
  font-weight: 500;
}

.cta-box {
  margin-top: 28px;
  padding: 24px;
  background: linear-gradient(135deg, var(--blue-50), #f0fdf4);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-box p {
  font-size: 0.92rem;
  color: var(--gray-600);
  margin-bottom: 16px;
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 72px 0 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1fr;
  gap: 48px;
  padding-bottom: 0;
  align-items: start;
}

/* Column 1 — Brand */
.footer-brand { display: flex; flex-direction: column; }

.footer-brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  margin-bottom: 16px;
  transition: opacity 0.2s ease;
}

.footer-brand-link:hover { opacity: 0.85; }

.footer-logo-small {
  height: 48px;
  width: auto;
  border-radius: 8px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.footer-brand-th {
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-brand-en {
  font-size: 11px;
  font-weight: 500;
  color: #94A3B8;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer-brand p,
.footer-description {
  font-size: 0.88rem;
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

/* Column titles */
.footer-col-title,
.footer-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

/* Column 2 — Links */
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: #CBD5E1;
  font-size: 0.88rem;
  transition: color var(--transition);
  text-decoration: none;
}

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

/* Column 2b — Services */
.footer-services {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-services a {
  color: #CBD5E1;
  font-size: 0.88rem;
  transition: color var(--transition);
  text-decoration: none;
}

.footer-services a:hover { color: var(--accent); }

/* Column 3 — Contact */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li,
.footer-contact span,
.footer-contact a {
  font-size: 0.85rem;
  color: #94A3B8;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-contact a:hover { color: var(--white); }

/* Column 4 — QR Card */
.footer-qr { display: flex; flex-direction: column; }

.qr-card {
  background: var(--white);
  padding: 16px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}

.qr-image {
  width: 100%;
  max-width: 160px;
  height: auto;
  display: block;
  margin: 0 auto 10px;
  border-radius: 8px;
}

.qr-line-id {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 4px;
}

.qr-caption {
  font-size: 0.75rem;
  color: #64748B;
  margin: 0;
}

/* Footer bottom bar */
.footer-bottom {
  margin-top: 56px;
  padding: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,.3);
  margin: 4px 0;
}

@media (max-width: 968px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 580px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-qr { align-items: center; }
}

/* ===== DROPDOWN MENU ===== */
.has-dropdown { position: relative; }

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  font-family: 'Prompt', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.dropdown-toggle:hover { color: var(--white); background: rgba(255,255,255,.1); }

.dd-arrow {
  font-size: 0.65rem;
  transition: transform var(--transition);
  display: inline-block;
}

.has-dropdown.open .dd-arrow { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: 100%;            /* ชิดกับปุ่มเลย — ไม่มี gap */
  left: 0;
  min-width: 210px;
  background: var(--blue-900);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 6px;
  margin-top: 0;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 200;
  box-shadow: 0 16px 48px rgba(0,0,0,.4);
  list-style: none;
}

/* Invisible bridge — ป้องกัน hover หลุดเวลาเลื่อนเมาส์จากปุ่มลง dropdown */
.dropdown::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
  background: transparent;
}

.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.has-dropdown:hover .dd-arrow { transform: rotate(180deg); }

.dropdown li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  color: rgba(255,255,255,.8);
  transition: all var(--transition);
  white-space: nowrap;
}

.dropdown li a:hover {
  background: rgba(255,255,255,.1);
  color: var(--white);
}

@media (max-width: 768px) {
  .dropdown {
    position: static;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid rgba(255,255,255,.15);
    border-radius: 0;
    background: transparent;
    padding: 4px 0 4px 12px;
    margin-top: 4px;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }
  .dropdown li a { font-size: 0.9rem; padding: 8px 12px; }
}

/* ===== PAGE HERO (generic) ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, var(--blue-600) 100%);
  padding: 140px 0 80px;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.page-hero-content h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 16px;
}

.page-hero-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  line-height: 1.75;
}

/* ===== ABOUT PAGE ===== */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue-500), var(--blue-200));
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--blue-500);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--blue-200);
}

.timeline-year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--blue-500);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.timeline-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

.vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.vision-card {
  padding: 36px 28px;
  border-radius: var(--radius-xl);
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

.vision-card.visible { opacity: 1; transform: translateY(0); }

.vision-card.vision {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  color: var(--white);
}

.vision-card.mission {
  background: var(--white);
  border: 1px solid var(--gray-200);
}

.vision-card.values {
  background: linear-gradient(135deg, var(--blue-50), var(--white));
  border: 1px solid var(--blue-100);
}

.vision-icon { font-size: 2.5rem; margin-bottom: 16px; }

.vision-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.vision-card.vision h3 { color: var(--white); }
.vision-card.mission h3 { color: var(--blue-900); }
.vision-card.values h3 { color: var(--blue-900); }

.vision-card p, .vision-card ul {
  font-size: 0.9rem;
  line-height: 1.75;
}

.vision-card.vision p { color: rgba(255,255,255,.85); }
.vision-card.mission p { color: var(--gray-600); }
.vision-card.values ul { color: var(--gray-600); padding-left: 0; }

.vision-card ul li {
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.vision-card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--blue-500);
  font-weight: 700;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.team-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.team-card.visible { opacity: 1; transform: translateY(0); }
.team-card:hover { border-color: var(--blue-300); box-shadow: var(--shadow-md); transform: translateY(-4px); }

.team-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
}

.team-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.82rem;
  color: var(--blue-600);
  font-weight: 600;
  margin-bottom: 8px;
}

.team-card .bio {
  font-size: 0.83rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== BLOG ===== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.blog-card.visible { opacity: 1; transform: translateY(0); }

.blog-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.blog-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.blog-body { padding: 24px; }

.blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.blog-tag {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

.blog-date {
  font-size: 0.78rem;
  color: var(--gray-400);
}

.blog-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.45;
  margin-bottom: 10px;
}

.blog-card p {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 16px;
}

.blog-read-more {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--blue-500);
  transition: all var(--transition);
}

.blog-read-more:hover { color: var(--blue-700); letter-spacing: 0.02em; }

/* Blog Post (Article) */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
  padding: 64px 0;
}

.article-content {
  max-width: 100%;
}

.article-header { margin-bottom: 32px; }

.article-header .blog-meta { margin-bottom: 16px; }

.article-header h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-header .excerpt {
  font-size: 1.05rem;
  color: var(--gray-600);
  line-height: 1.75;
  border-left: 4px solid var(--blue-400);
  padding-left: 20px;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue-900);
  margin: 40px 0 16px;
  padding-top: 8px;
  border-top: 1px solid var(--gray-100);
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-800);
  margin: 28px 0 12px;
}

.article-body p {
  font-size: 0.97rem;
  color: var(--gray-700);
  line-height: 1.85;
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.article-body li {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.75;
  margin-bottom: 8px;
}

.article-body ul li { list-style: disc; }
.article-body ol li { list-style: decimal; }

.info-box {
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-left: 4px solid var(--blue-500);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
}

.info-box p { margin: 0; color: var(--blue-800); font-size: 0.93rem; }

.table-wrap { overflow-x: auto; margin: 24px 0; }

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.article-table th {
  background: var(--blue-700);
  color: var(--white);
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
}

.article-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-700);
}

.article-table tr:nth-child(even) td { background: var(--gray-50); }

.article-cta {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  border-radius: var(--radius-xl);
  padding: 32px;
  text-align: center;
  margin: 40px 0;
}

.article-cta h3 { color: var(--white); font-size: 1.15rem; margin-bottom: 8px; }
.article-cta p { color: rgba(255,255,255,.75); font-size: 0.9rem; margin-bottom: 20px; }
.article-cta .btn-primary { font-size: 0.95rem; padding: 12px 24px; }

/* Article Sidebar */
.article-sidebar { position: sticky; top: 90px; }

.sidebar-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 28px;
  margin-bottom: 20px;
}

.sidebar-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--blue-100);
}

.related-posts { display: flex; flex-direction: column; gap: 14px; }

.related-post {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.related-post-img {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.related-post-text {
  font-size: 0.83rem;
  color: var(--gray-700);
  font-weight: 600;
  line-height: 1.45;
  transition: color var(--transition);
}

.related-post:hover .related-post-text { color: var(--blue-500); }

.sidebar-contact { background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); }
.sidebar-contact h4 { color: var(--white); border-color: rgba(255,255,255,.15); }
.sidebar-contact p { color: rgba(255,255,255,.75); font-size: 0.88rem; margin-bottom: 16px; }

@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar { position: static; }
}

/* ===== CONTACT FORM ===== */
.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.contact-form-wrap h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: 24px;
}

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

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: 'Prompt', sans-serif;
  font-size: 0.95rem;
  color: var(--gray-800);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group.full { grid-column: 1 / -1; }

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--blue-500);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-family: 'Prompt', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-blue);
}

.form-submit:hover {
  background: var(--blue-600);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(37,99,235,.35);
}

.form-note {
  font-size: 0.78rem;
  color: var(--gray-400);
  text-align: center;
  margin-top: 12px;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
}

/* ===== PORTFOLIO PAGE ===== */
.portfolio-hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.portfolio-stat strong {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  display: block;
}

.portfolio-stat span {
  font-size: 0.8rem;
  color: var(--blue-300);
}

/* SERVICE LINK ===== */
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #F59E0B;
  font-weight: 600;
  font-size: 15px;
  transition: gap 0.2s ease;
}

.service-card:hover .service-link {
  gap: 12px;
}

/* ===== ACTIVE NAV LINK ===== */
.nav-links a.active-link {
  color: var(--white);
  background: rgba(255,255,255,.12);
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(24px);
}

.testimonial-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.testimonial-card:hover {
  border-color: var(--blue-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.testimonial-stars {
  font-size: 1.2rem;
  color: #f59e0b;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-card blockquote {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.75;
  font-style: italic;
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 3px solid var(--blue-200);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonial-avatar svg {
  width: 32px;
  height: 32px;
}

.testimonial-avatar.hospital { background: linear-gradient(135deg, #1e4d9e, #3b82f6); }
.testimonial-avatar.factory  { background: linear-gradient(135deg, #374151, #6b7280); }
.testimonial-avatar.clinic   { background: linear-gradient(135deg, #9333ea, #c084fc); }

.testimonial-author strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.testimonial-author span {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.testimonial-service-badge {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
}

.testimonials-cta {
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  border-radius: var(--radius-xl);
}

.testimonials-cta p {
  color: rgba(255,255,255,.8);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 20px;
}

/* ===== FLOATING BUTTONS ===== */
.float-btns {
  position: fixed;
  bottom: 100px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 998;
}

.float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.float-btn svg {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.float-label {
  position: absolute;
  right: 68px;
  background: var(--gray-900);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.float-label::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--gray-900);
  border-right: none;
}

.float-btn:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(0,0,0,.3); }
.float-btn:hover .float-label { opacity: 1; }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  width: 46px;
  height: 46px;
  background: var(--blue-600);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--blue-500);
  transform: translateY(-3px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
}

@media (max-width: 900px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .about-float-card {
    bottom: 16px;
    left: 16px;
  }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: var(--blue-900);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    transform: translateY(-110%);
    transition: transform var(--transition-slow);
    border-top: 1px solid rgba(255,255,255,.1);
    z-index: 999;
  }

  .nav-links.open { transform: translateY(0); }

  .nav-links a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .btn-nav {
    text-align: center;
    margin-top: 8px;
  }

  .hero {
    min-height: 85vh;
    background-attachment: scroll;
  }
  .hero-content { padding: 60px 24px; }
  .hero-stats { gap: 24px; }
  .stat strong { font-size: 2rem; }

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

  .portfolio-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn, .hero-actions .btn-accent { text-align: center; justify-content: center; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .stat strong { font-size: 1.8rem; }
  .services-grid { grid-template-columns: 1fr; }
  .contact-card, .contact-info-card { padding: 28px 20px; }
  .back-to-top { bottom: 20px; right: 16px; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .float-btns { bottom: 80px; right: 16px; }
  .float-btn { width: 50px; height: 50px; }
  .float-btn svg { width: 50px; height: 50px; }
}

/* ===== CONTACT QR CARD ===== */
.contact-qr-card {
  background: var(--white);
  padding: 28px 24px;
  border-radius: 16px;
  text-align: center;
  border: 2px solid var(--gray-200);
  box-shadow: 0 4px 20px rgba(10,30,79,.06);
}

.contact-qr-card img {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin: 0 auto 16px;
  display: block;
  border-radius: 8px;
}

.contact-qr-text {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin: 0 0 4px;
}

.contact-qr-id {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0;
}

/* ===== CASE STUDY: VICHAIYUT ===== */
.case-study {
  padding: 100px 0;
  background: #FFFFFF;
}

.section-header .badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(245, 158, 11, 0.1);
  color: #F59E0B;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.case-study .section-header h2 {
  font-size: clamp(32px, 5vw, 48px);
  color: #0A1E4F;
  margin: 0 0 12px;
}

.section-header .subtitle {
  font-size: 18px;
  color: #64748B;
  margin: 0;
}

/* Filter Tabs */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 24px;
  background: #F8FAFC;
  border: 2px solid #E2E8F0;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  color: #64748B;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  border-color: #F59E0B;
  color: #F59E0B;
  background: #F8FAFC;
}

.filter-btn.active {
  background: #0A1E4F;
  border-color: #0A1E4F;
  color: white;
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
}

.gallery-item.hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    rgba(10, 30, 79, 0.9) 0%,
    rgba(10, 30, 79, 0) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.gallery-tag {
  display: inline-block;
  padding: 4px 12px;
  background: #F59E0B;
  color: white;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  align-self: flex-start;
}

.gallery-overlay p {
  color: white;
  margin: 0;
  font-size: 14px;
}

/* Project Stats */
.project-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px;
  background: #F8FAFC;
  border-radius: 16px;
  margin-bottom: 60px;
}

.stat-item {
  text-align: center;
  display: flex;
  flex-direction: column;
}

.stat-item strong {
  font-size: 40px;
  color: #F59E0B;
  font-weight: 700;
  line-height: 1;
}

.stat-item span {
  font-size: 14px;
  color: #64748B;
  margin-top: 8px;
}

/* Scope Cards */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scope-card {
  background: white;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 32px;
  transition: all 0.2s ease;
}

.scope-card:hover {
  border-color: #F59E0B;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(10, 30, 79, 0.08);
}

.scope-card h4 {
  font-size: 20px;
  color: #0A1E4F;
  margin: 0 0 16px;
}

.scope-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.scope-card li {
  padding: 8px 0 8px 24px;
  position: relative;
  color: #475569;
  font-size: 15px;
}

.scope-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #F59E0B;
  font-weight: 700;
}

@media (max-width: 968px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .project-stats { grid-template-columns: repeat(2, 1fr); }
  .scope-grid { grid-template-columns: 1fr; }
}

@media (max-width: 580px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .project-stats { padding: 24px; }
}

/* ===== CLIENTS SECTION ===== */
.clients {
  padding: 100px 0;
  background: #F8FAFC;
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.client-card {
  background: white;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
  cursor: default;
}

.client-card:hover {
  border-color: #F59E0B;
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(10, 30, 79, 0.1);
}

.client-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.client-card h4 {
  font-size: 16px;
  color: #0A1E4F;
  font-weight: 700;
  margin: 0 0 12px;
  line-height: 1.3;
}

.client-card p {
  font-size: 14px;
  color: #64748B;
  margin: 0;
  line-height: 1.5;
}

.clients-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 48px;
  background: linear-gradient(135deg, #0A1E4F, #1E40AF);
  border-radius: 20px;
  text-align: center;
}

.trust-stat {
  display: flex;
  flex-direction: column;
}

.trust-stat strong {
  font-size: 56px;
  color: #F59E0B;
  font-weight: 700;
  line-height: 1;
}

.trust-stat span {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 12px;
}

@media (max-width: 968px) {
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-stats { grid-template-columns: 1fr; gap: 24px; padding: 32px; }
}

@media (max-width: 580px) {
  .clients-grid { grid-template-columns: 1fr; }
}

/* ===== SERVICE HERO — BACKGROUND IMAGE ===== */
.service-hero.hero-with-image {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 60vh;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-overlay-electrical {
  background: linear-gradient(135deg,
    rgba(245, 158, 11, 0.85) 0%,
    rgba(217, 119, 6, 0.92) 50%,
    rgba(10, 30, 79, 0.95) 100%);
}

.hero-overlay-hvac {
  background: linear-gradient(135deg,
    rgba(59, 130, 246, 0.85) 0%,
    rgba(37, 99, 235, 0.92) 50%,
    rgba(10, 30, 79, 0.95) 100%);
}

.hero-overlay-plumbing {
  background: linear-gradient(135deg,
    rgba(16, 185, 129, 0.85) 0%,
    rgba(5, 150, 105, 0.92) 50%,
    rgba(10, 30, 79, 0.95) 100%);
}

.hero-overlay-cctv {
  background: linear-gradient(135deg,
    rgba(220, 38, 38, 0.85) 0%,
    rgba(185, 28, 28, 0.92) 50%,
    rgba(10, 30, 79, 0.95) 100%);
}

.hero-overlay-network {
  background: linear-gradient(135deg,
    rgba(147, 51, 234, 0.85) 0%,
    rgba(126, 34, 206, 0.92) 50%,
    rgba(10, 30, 79, 0.95) 100%);
}

.service-hero.hero-with-image .container {
  position: relative;
  z-index: 2;
}

/* ===== SERVICE BANNER ===== */
.service-banner-section {
  padding: 60px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}

.banner-link {
  display: block;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(10, 30, 79, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.banner-link:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 70px rgba(10, 30, 79, 0.2);
}

.service-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== FEATURED PROJECT (BEFORE/AFTER) ===== */
.featured-project {
  padding: 100px 0;
  background: #FFFFFF;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}

.featured-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(10, 30, 79, 0.12);
  display: block;
}

.featured-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-content: start;
}

.stat-card {
  background: #F8FAFC;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.stat-card:hover {
  border-color: #F59E0B;
  transform: translateY(-2px);
}

.stat-card strong {
  font-size: 40px;
  font-weight: 700;
  color: #F59E0B;
  line-height: 1;
}

.stat-card span {
  font-size: 16px;
  color: #0A1E4F;
  font-weight: 600;
  margin-top: 4px;
}

.stat-card small {
  font-size: 12px;
  color: #94A3B8;
  margin-top: 6px;
  line-height: 1.4;
}

.featured-cta {
  grid-column: 1 / -1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  background: #0A1E4F;
  color: white;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
  margin-top: 8px;
}

.featured-cta:hover {
  background: #F59E0B;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .featured-grid { grid-template-columns: 1fr; gap: 32px; }
  .featured-stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .featured-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 16px 12px; }
  .stat-card strong { font-size: 32px; }
}

/* ===== PORTFOLIO FEATURED (BEFORE/AFTER) ===== */
.portfolio-featured {
  padding: 60px 0;
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}

.featured-banner {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(10, 30, 79, 0.2);
  max-width: 800px;
  margin: 0 auto;
}

.featured-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.featured-caption {
  text-align: center;
  margin: 32px auto 0;
  max-width: 700px;
  font-size: 17px;
  color: #475569;
  line-height: 1.6;
}

.featured-caption strong {
  color: #0A1E4F;
}