/* ============================
   ĐẠT MOBILE – STYLE.CSS
   ============================ */

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

:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-light: #fcd34d;
  --dark: #0f172a;
  --dark2: #1e293b;
  --dark3: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --white: #ffffff;
  --accent: #3b82f6;
  --green: #10b981;
  --red: #ef4444;
  --zalo: #0068ff;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(0,0,0,0.4);
  --transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  background: var(--dark);
  color: var(--text);
  overflow-x: hidden;
  font-size: 15px;
  line-height: 1.65;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* TOPBAR */
.topbar {
  background: var(--primary);
  color: var(--dark);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 0;
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.topbar-inner span { display: flex; align-items: center; gap: 6px; }

/* HEADER */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(245,158,11,0.2);
  padding: 14px 0;
  transition: var(--transition);
}
.header.scrolled { padding: 10px 0; box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--dark);
  box-shadow: 0 4px 20px rgba(245,158,11,0.4);
}
.logo-text { display: flex; flex-direction: column; }
.logo-main { font-size: 20px; font-weight: 900; color: var(--primary); letter-spacing: 1px; line-height: 1.1; }
.logo-sub { font-size: 11px; color: var(--text-muted); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 14px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
  display: flex; align-items: center; gap: 8px;
}
.nav-link i { font-size: 14px; opacity: 0.8; }
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(245,158,11,0.1);
}
.nav-link:hover i, .nav-link.active i { color: var(--primary); opacity: 1; }

.header-cta { display: flex; align-items: center; gap: 10px; }
.header-phones { display: flex; align-items: center; gap: 8px; }
.btn-call {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  display: flex; align-items: center; gap: 7px;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 15px rgba(245,158,11,0.2);
}
.btn-call:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,158,11,0.4); }
.hamburger {
  display: none;
  background: none; border: 1px solid rgba(245,158,11,0.3);
  color: var(--primary); padding: 8px 12px;
  border-radius: 8px; cursor: pointer; font-size: 18px;
}

/* HERO */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(245,158,11,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(59,130,246,0.1) 0%, transparent 60%),
    linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: url('https://images.unsplash.com/photo-1592750475338-74b7b21085ab?w=1920&q=80') center/cover no-repeat;
  opacity: 0.06;
}
.hero-content {
  position: relative; z-index: 2;
  padding: 80px 20px;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.3);
  color: var(--primary);
  padding: 6px 16px; border-radius: 50px;
  font-size: 13px; font-weight: 600;
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease;
}
.hero-title {
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 20px;
  animation: fadeInUp 0.7s ease 0.1s both;
}
.hero-title span {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 36px;
  animation: fadeInUp 0.7s ease 0.2s both;
  text-shadow: 0 2px 10px rgba(245, 158, 11, 0.3);
  letter-spacing: 0.5px;
}
.hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 60px;
  animation: fadeInUp 0.7s ease 0.3s both;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition);
  box-shadow: 0 6px 24px rgba(245,158,11,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(245,158,11,0.5); }
.btn-secondary {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--white);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  display: inline-flex; align-items: center; gap: 8px;
  transition: var(--transition);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); border-color: var(--primary); }
.btn-zalo-hero {
  background: var(--zalo);
  color: #fff;
  border: none;
  box-shadow: 0 6px 24px rgba(0,104,255,0.35);
}
.btn-zalo-hero:hover { background: #0056cc; box-shadow: 0 10px 32px rgba(0,104,255,0.5); }

.hero-stats {
  display: flex; gap: 32px; flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.4s both;
}
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 28px; font-weight: 900; color: var(--primary); line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

.hero-scroll {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%);
  color: var(--primary); font-size: 20px;
  animation: bounce 2s infinite;
}

/* MARQUEE */
.marquee-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  padding: 12px 0;
  overflow: hidden;
}
.marquee-track {
  display: flex; gap: 60px;
  white-space: nowrap;
  animation: marquee 25s linear infinite;
  font-weight: 700; font-size: 14px;
}
.marquee-track span { display: inline-block; }

/* SECTION COMMONS */
.section { padding: 90px 0; }
.bg-alt { background: var(--dark2); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.3);
  color: var(--primary);
  padding: 4px 16px; border-radius: 50px;
  font-size: 12px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: var(--white); margin-bottom: 14px; }
.section-desc { color: var(--text-muted); max-width: 560px; margin: 0 auto; font-size: 16px; }

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.service-card {
  display: flex;
  flex-direction: column;
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0; transition: var(--transition);
}
.service-card:hover { transform: translateY(-6px); border-color: rgba(245,158,11,0.2); box-shadow: var(--shadow); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 56px; height: 56px;
  background: rgba(var(--c-rgb, 245, 158, 11), 0.12);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  color: var(--c, var(--primary));
  margin-bottom: 20px;
  filter: drop-shadow(0 0 8px currentColor);
}
.service-card h3 { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 18px; }
.service-link {
  color: var(--primary); text-decoration: none;
  font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  transition: var(--transition);
}
.service-link:hover { gap: 10px; }

.service-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.service-btns { display: flex; gap: 8px; }
.btn-s-call, .btn-s-zalo {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  text-decoration: none; color: white;
  font-size: 14px; transition: var(--transition);
}
.btn-s-call { background: var(--green); }
.btn-s-zalo { background: var(--zalo); }
.btn-s-call:hover, .btn-s-zalo:hover { transform: scale(1.1) translateY(-2px); box-shadow: 0 4px 15px rgba(0,0,0,0.4); }

/* WHY SECTION */
.why-section { background: var(--dark2); padding: 90px 0; }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.why-image { position: relative; z-index: 1; perspective: 1000px; }
.why-image-wrapper {
  position: relative;
  border-radius: 24px;
  padding: 5px;
  background: linear-gradient(135deg, var(--primary), transparent 50%, rgba(59,130,246,0.4));
  box-shadow: 0 15px 50px rgba(0,0,0,0.6), 0 0 30px rgba(245,158,11,0.2);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}
.why-image:hover .why-image-wrapper {
  transform: translateY(-5px) scale(1.01);
  box-shadow: 0 20px 60px rgba(0,0,0,0.7), 0 0 40px rgba(245,158,11,0.35);
}
.why-image img {
  width: 100%; border-radius: 20px;
  display: block;
  object-fit: cover; max-height: 520px;
}
.why-badge-float {
  position: absolute; bottom: -16px; right: -16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 800; font-size: 15px;
  display: flex; align-items: center; gap: 8px;
  box-shadow: 0 8px 30px rgba(245,158,11,0.4);
}
.why-content h2 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; color: var(--white); margin: 14px 0 32px; line-height: 1.2; }
.why-items { display: flex; flex-direction: column; gap: 20px; margin-bottom: 36px; }
.why-item { display: flex; gap: 16px; align-items: flex-start; }
.why-dot {
  width: 10px; height: 10px; min-width: 10px;
  background: var(--primary);
  border-radius: 50%;
  margin-top: 7px;
  box-shadow: 0 0 10px var(--primary);
}
.why-item strong { color: var(--white); font-size: 16px; display: block; margin-bottom: 4px; }
.why-item p { color: var(--text-muted); font-size: 14px; margin: 0; }

/* PRICE TABLES */
.price-section { background: var(--dark); }
.price-tabs { display: flex; gap: 10px; margin-bottom: 32px; flex-wrap: wrap; justify-content: center; }
.tab-btn {
  padding: 10px 22px;
  border-radius: 8px;
  border: 1px solid rgba(245,158,11,0.3);
  background: transparent;
  color: var(--text-muted);
  font-weight: 600; font-size: 14px;
  cursor: pointer; transition: var(--transition);
  font-family: inherit;
}
.tab-btn.active, .tab-btn:hover {
  background: var(--primary);
  color: var(--dark);
  border-color: var(--primary);
}
.tab-content { display: none; }
.tab-content.active { display: block; }
.price-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--dark2);
}
.price-table thead tr {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
}
.price-table th {
  padding: 16px 24px;
  text-align: left;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.5px;
}
.price-table td {
  padding: 14px 24px;
  font-size: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text);
}
.price-table tr:last-child td { border-bottom: none; }
.price-table tbody tr:hover { background: rgba(245,158,11,0.05); }
.price-table tbody tr:nth-child(even) { background: rgba(255,255,255,0.02); }
.price-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  padding: 4px 12px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 15px;
}
.contact-quick-btn {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--primary); text-decoration: none;
  font-size: 13px; font-weight: 600;
  border: 1px solid rgba(245,158,11,0.3);
  padding: 5px 12px; border-radius: 6px;
  transition: var(--transition);
}
.contact-quick-btn:hover { background: rgba(245,158,11,0.1); }

/* GALLERY / PRODUCTS */
.gallery-section { background: var(--dark); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.06);
  aspect-ratio: 4/3;
  transition: var(--transition);
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(.4,0,.2,1);
}
.gallery-item:hover img {
  transform: scale(1.08);
}
.gallery-item::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(245,158,11,0);
  transition: var(--transition);
  pointer-events: none;
}
.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
}
.gallery-item:hover::after {
  box-shadow: inset 0 0 0 2px rgba(245,158,11,0.5);
}

/* ACCESSORIES */
.accessories-section { background: var(--dark2); }
.acc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.acc-card {
  background: var(--dark);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.acc-card:hover { transform: translateY(-4px); border-color: rgba(245,158,11,0.25); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.acc-img {
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--dark3);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.05);
}
.acc-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.acc-card:hover .acc-img img { transform: scale(1.1); }
.acc-card h4 { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.acc-price {
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 12px;
}
.acc-card p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }

/* CONTACT */
.contact-section { background: var(--dark); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
  display: flex; align-items: flex-start; gap: 16px;
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: var(--transition);
}
.contact-card:hover { border-color: rgba(245,158,11,0.2); }
.contact-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-card h4 { color: var(--white); font-size: 15px; font-weight: 700; margin-bottom: 5px; }
.contact-card p { color: var(--text-muted); font-size: 14px; }
.contact-card a { color: var(--primary); text-decoration: none; font-weight: 600; }
.contact-map { height: 400px; border-radius: 16px; overflow: hidden; border: 1px solid rgba(255,255,255,0.08); }
.contact-buttons { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.cta-btn {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 20px;
  border-radius: 10px;
  font-weight: 700; font-size: 15px;
  text-decoration: none;
  transition: var(--transition);
  min-width: 120px;
}
.cta-call { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--dark); }
.cta-call:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.4); }
.cta-zalo { background: rgba(0,104,255,0.15); border: 1px solid rgba(0,104,255,0.4); color: #60a5fa; }
.cta-zalo:hover { background: rgba(0,104,255,0.3); transform: translateY(-2px); }
.cta-fb { background: rgba(24,119,242,0.15); border: 1px solid rgba(24,119,242,0.4); color: #93c5fd; }
.cta-fb:hover { background: rgba(24,119,242,0.3); transform: translateY(-2px); }

/* FOOTER */
.footer { background: #070d1a; border-top: 1px solid rgba(255,255,255,0.06); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; margin-top: 16px; max-width: 320px; line-height: 1.7; }
.footer-links h4, .footer-contact h4 { color: var(--white); font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact p { color: var(--text-muted); font-size: 14px; display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.footer-contact a { color: var(--primary); text-decoration: none; }
.footer-contact i { color: var(--primary); width: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px 0;
  text-align: center;
}
.footer-bottom p { color: var(--text-muted); font-size: 13px; margin-bottom: 8px; }
.footer-phones-bottom { display: flex; justify-content: center; gap: 12px; font-size: 14px; font-weight: 700; }
.footer-phones-bottom a { color: var(--primary); text-decoration: none; }
.footer-phones-bottom a:hover { text-decoration: underline; }

/* FLOATING BUTTONS */
.float-buttons {
  position: fixed; right: 20px; bottom: 30px;
  display: flex; flex-direction: column; gap: 12px;
  z-index: 999;
}
.float-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.float-call { background: linear-gradient(135deg, #10b981, #059669); color: #fff; animation: pulse-ring 2s infinite; }
.float-zalo { background: #0068ff; color: #fff; }
.float-top { background: var(--dark2); border: 1px solid rgba(245,158,11,0.3); color: var(--primary); opacity: 0; pointer-events: none; transition: var(--transition); }
.float-top.visible { opacity: 1; pointer-events: all; }
.float-btn:hover { transform: scale(1.12) translateY(-3px); }

/* ANIMATIONS */
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(-10px); } }
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(16,185,129,0.6); }
  70% { box-shadow: 0 0 0 14px rgba(16,185,129,0); }
  100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

/* SEARCH BAR */
.search-wrapper {
  display: flex; justify-content: center;
  margin-bottom: 32px;
}
.search-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--dark2);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: 12px;
  padding: 12px 20px;
  width: 100%; max-width: 500px;
}
.search-bar input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); font-family: inherit; font-size: 15px;
}
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar i { color: var(--text-muted); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .why-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .why-image { order: -1; }
}
@media (max-width: 768px) {
  .nav {
    display: flex;
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 90px 24px;
    gap: 10px;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(.4, 0, .2, 1);
    box-shadow: -10px 0 40px rgba(0,0,0,0.8);
    border-left: 1px solid rgba(245, 158, 11, 0.2);
  }
  .nav.open { right: 0; }
  .nav-link {
    width: 100%;
    font-size: 17px;
    padding: 14px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    border: 1px solid transparent;
  }
  .nav-link:hover, .nav-link.active {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
  }
  
  .nav-header-mobile {
    display: flex;
    width: 100%;
    padding-bottom: 20px;
    margin-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    align-items: center;
    gap: 12px;
  }
  .nav-header-mobile i { font-size: 32px; color: var(--primary); }
  .nav-header-mobile span { font-size: 20px; font-weight: 900; color: var(--white); }

  .nav-link i { font-size: 18px; margin-right: 12px; }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
  }
  .nav-overlay.show { opacity: 1; pointer-events: all; }

  .hamburger { display: flex; z-index: 1001; position: relative; }
  .header-phones { display: flex; flex-direction: column; gap: 4px; }
  .btn-call { padding: 6px 10px; font-size: 11px; }
  .btn-call i { font-size: 10px; }
  
  .hero-stats { gap: 24px; }
  .services-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .topbar-inner { flex-direction: column; gap: 4px; font-size: 12px; padding: 5px 0; }
  .hero-content { padding: 60px 20px 80px; }
  .contact-map { height: 300px; }
  .why-badge-float { right: 0; bottom: 0; }
  .section, .why-section { padding: 50px 0; }
  .why-grid { gap: 32px; }
  .section-header { margin-bottom: 40px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 32px; margin-bottom: 14px; }
  .hero-desc { font-size: 15px; margin-bottom: 24px; }
  .hero-actions { flex-direction: column; gap: 12px; margin-bottom: 40px; }
  .btn-primary, .btn-zalo { width: 100%; justify-content: center; }
  .price-tabs { flex-direction: column; gap: 8px; }
  .tab-btn { width: 100%; text-align: center; }
  .why-badge-float { right: 10px; bottom: 10px; font-size: 12px; padding: 8px 12px; }
  .gallery-grid { grid-template-columns: 1fr; gap: 16px; }
  .why-image img { max-height: 380px; }
  .price-table th, .price-table td { padding: 12px 10px; font-size: 13px; }
  .price-badge { font-size: 13px; padding: 3px 8px; }
  .service-card { padding: 24px 20px; }
  .contact-card { padding: 16px; flex-direction: column; gap: 12px; align-items: center; text-align: center; }
  .contact-icon { margin-bottom: 4px; }
  .cta-btn { font-size: 14px; padding: 12px 16px; }
  .float-buttons { right: 15px; bottom: 20px; gap: 10px; }
  .float-btn { width: 44px; height: 44px; font-size: 18px; }
}
/* POPUP STYLES */
.popup-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: all 0.4s ease;
  padding: 20px;
}
.popup-overlay.show { opacity: 1; pointer-events: all; }
.popup-content {
  background: var(--dark2);
  width: 100%; max-width: 560px;
  border-radius: 24px;
  position: relative;
  border: 1px solid rgba(245,158,11,0.3);
  box-shadow: 0 30px 100px rgba(0,0,0,0.8);
  transform: translateY(30px);
  transition: all 0.5s cubic-bezier(.34,1.56,.64,1);
  overflow: hidden;
}
.popup-overlay.show .popup-content { transform: translateY(0); }
.popup-close {
  position: absolute; top: 15px; right: 20px;
  background: none; border: none;
  color: var(--text-muted); font-size: 32px;
  cursor: pointer; transition: var(--transition);
  z-index: 10;
}
.popup-close:hover { color: var(--red); }

.popup-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 30px 20px; text-align: center; color: var(--dark);
}
.popup-header i { font-size: 40px; margin-bottom: 12px; display: block; }
.popup-header h3 { font-size: 20px; font-weight: 800; letter-spacing: 0.5px; }

.popup-body { padding: 24px; }
.special-note {
  background: rgba(245,158,11,0.1);
  border-left: 4px solid var(--primary);
  padding: 12px 16px; border-radius: 8px;
  color: var(--white); font-size: 15px;
  margin-bottom: 24px; text-align: center;
}
.popup-products { display: flex; flex-direction: column; gap: 16px; }
.p-prod-card {
  display: flex; align-items: center; gap: 16px;
  background: rgba(255,255,255,0.03);
  padding: 12px; border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.05);
}
.p-prod-card img { width: 80px; height: 80px; object-fit: cover; border-radius: 10px; }
.p-prod-info { flex: 1; }
.p-prod-info h4 { font-size: 16px; color: var(--white); margin-bottom: 4px; }
.p-price { color: var(--primary); font-weight: 800; font-size: 18px; }
.p-small { font-size: 12px; color: var(--text-muted); margin-top: 4px; line-height: 1.4; }

.popup-footer { padding: 0 24px 24px; }
.popup-footer .btn-zalo { width: 100%; justify-content: center; padding: 16px; }

@media (max-width: 600px) {
  .header-phones { display: flex; }
  .header-inner { justify-content: space-between; }
  .popup-content { border-radius: 0; height: 100%; max-width: 100%; display: flex; flex-direction: column; justify-content: center; }
  .popup-body { overflow-y: auto; }
}