/* =============================================
   BHLĐ MRS LINH - STYLESHEET
   dobaoholaodong.inaodongphucmrslinh.com
   ============================================= */

/* === GOOGLE FONTS === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Oswald:wght@400;500;600;700&display=swap');

/* === CSS VARIABLES === */
:root {
  --primary: #1565C0;
  --primary-dark: #0D47A1;
  --primary-light: #1E88E5;
  --secondary: #E65100;
  --secondary-light: #FF6D00;
  --accent: #FFC107;
  --dark: #0D1B2A;
  --dark-2: #1a2744;
  --text: #2c3e50;
  --text-light: #546e7a;
  --bg: #F4F6F9;
  --bg-2: #ECEFF1;
  --white: #FFFFFF;
  --border: #CFD8DC;
  --success: #2E7D32;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-blue: 0 8px 30px rgba(21,101,192,0.25);
  --shadow-orange: 0 8px 30px rgba(230,81,0,0.25);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
}

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

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5 {
  font-family: 'Oswald', sans-serif;
  line-height: 1.2;
  color: var(--dark);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.8rem); font-weight: 600; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 600; }
h4 { font-size: 1.2rem; font-weight: 600; }
p { margin-bottom: 1rem; color: var(--text-light); }

/* === UTILITIES === */
.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }
.text-center { text-align: center; }
.text-white { color: var(--white) !important; }
.fw-bold { font-weight: 700; }

.badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: white;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 14px;
}
.section-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 50px;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(21,101,192,0.4); }

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: white;
  box-shadow: var(--shadow-orange);
}
.btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(230,81,0,0.4); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: white; transform: translateY(-2px); }

.btn-white {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow-md);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,0,0,0.2); }

.btn-lg { padding: 18px 42px; font-size: 1.1rem; }
.btn-sm { padding: 10px 22px; font-size: 0.9rem; }

/* === HEADER === */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}
#header.scrolled {
  background: rgba(13, 27, 42, 0.97);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 30px rgba(0,0,0,0.3);
}
#header.scrolled .logo-text { color: white; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.logo-text {
  font-family: 'Oswald', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
  line-height: 1.2;
}
.logo-sub {
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 400;
  letter-spacing: 0.5px;
  display: block;
}

nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  color: rgba(255,255,255,0.85);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover { color: white; background: rgba(255,255,255,0.1); }
.nav-link.active { color: var(--accent); }

.header-cta { display: flex; align-items: center; gap: 10px; }
.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid rgba(255,193,7,0.4);
  padding: 8px 16px;
  border-radius: 50px;
  transition: var(--transition);
}
.header-phone:hover { background: var(--accent); color: var(--dark); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

/* === HERO === */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 40%, var(--primary-dark) 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(21,101,192,0.3) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(230,81,0,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,193,7,0.15);
  border: 1px solid rgba(255,193,7,0.4);
  color: var(--accent);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease;
}

.hero h1 {
  color: white;
  animation: fadeInUp 0.8s ease 0.1s both;
  margin-bottom: 20px;
}

.hero h1 span { color: var(--accent); }

.hero-desc {
  color: rgba(255,255,255,0.75);
  font-size: 1.15rem;
  margin-bottom: 36px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 50px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.stat-item { text-align: center; }
.stat-num {
  font-family: 'Oswald', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-stack {
  position: relative;
  width: 400px;
  height: 500px;
}

.hero-card {
  position: absolute;
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.hero-card.main-card {
  width: 360px;
  left: 0;
  top: 40px;
  z-index: 2;
  animation: float 4s ease-in-out infinite;
}
.hero-card.sub-card {
  width: 280px;
  right: -20px;
  bottom: 40px;
  background: rgba(230,81,0,0.2);
  border-color: rgba(230,81,0,0.3);
  animation: float 4s ease-in-out infinite 2s;
}

.card-header-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.card-title {
  color: white;
  font-family: 'Oswald', sans-serif;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.card-features { display: flex; flex-direction: column; gap: 10px; }
.card-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
}
.card-feature .check {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--success), #43A047);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: white;
  flex-shrink: 0;
}

/* === TRUST BAR === */
.trust-bar {
  background: linear-gradient(135deg, var(--dark), var(--dark-2));
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.trust-items {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.8);
}
.trust-icon {
  font-size: 1.8rem;
  color: var(--accent);
}
.trust-text strong {
  display: block;
  font-size: 0.95rem;
  color: white;
  font-weight: 600;
}
.trust-text small { font-size: 0.78rem; color: rgba(255,255,255,0.5); }

/* === SERVICES SECTION === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-blue);
  border-color: transparent;
}

.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}
.service-card h3 { color: var(--dark); margin-bottom: 12px; font-size: 1.2rem; }
.service-card p { margin-bottom: 20px; font-size: 0.95rem; }
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}
.service-link:hover { gap: 10px; color: var(--secondary); }

/* === WHY US === */
.why-us {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  position: relative;
  overflow: hidden;
}
.why-us::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
  position: relative;
  z-index: 1;
}

.why-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.why-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
  border-color: rgba(255,193,7,0.3);
}
.why-num {
  font-family: 'Oswald', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255,193,7,0.2);
  line-height: 1;
  margin-bottom: 8px;
}
.why-icon { font-size: 2.2rem; margin-bottom: 16px; }
.why-card h4 { color: white; margin-bottom: 10px; font-size: 1.05rem; }
.why-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin: 0; }

/* === PAIN POINTS === */
.pain-section {
  background: var(--bg);
}
.pain-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.pain-list { display: flex; flex-direction: column; gap: 18px; }
.pain-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: white;
  border-radius: var(--radius);
  border-left: 4px solid var(--secondary);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.pain-item:hover { transform: translateX(4px); box-shadow: var(--shadow-md); }
.pain-emoji { font-size: 1.8rem; flex-shrink: 0; }
.pain-item h4 { color: var(--dark); margin-bottom: 4px; font-size: 1rem; font-family: 'Inter', sans-serif; }
.pain-item p { margin: 0; font-size: 0.9rem; }

.solution-box {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: white;
}
.solution-box h3 { color: white; margin-bottom: 24px; }
.solution-list { display: flex; flex-direction: column; gap: 14px; }
.solution-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
}
.solution-item .icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }

/* === PROCESS === */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Oswald', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: white;
  margin: 0 auto 20px;
  border: 4px solid white;
  box-shadow: var(--shadow-blue);
}
.process-step:last-child .step-num {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  box-shadow: var(--shadow-orange);
}
.process-step h4 { color: var(--dark); margin-bottom: 8px; }
.process-step p { font-size: 0.9rem; }

/* === PRODUCTS GRID === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.product-thumb {
  height: 200px;
  background: linear-gradient(135deg, var(--bg), var(--bg-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}
.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--secondary);
  color: white;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}
.product-body { padding: 20px; }
.product-body h4 { color: var(--dark); margin-bottom: 8px; }
.product-body p { font-size: 0.9rem; margin-bottom: 16px; }
.product-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

/* === TESTIMONIALS === */
.testimonials { background: var(--bg); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: white;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 5rem;
  color: var(--primary);
  opacity: 0.1;
  font-family: serif;
  line-height: 1;
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stars { color: #FFB300; margin-bottom: 14px; font-size: 1rem; letter-spacing: 2px; }
.testimonial-text { color: var(--text); margin-bottom: 20px; font-style: italic; line-height: 1.7; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  font-weight: 700;
}
.author-name { font-weight: 600; color: var(--dark); font-size: 0.95rem; }
.author-role { font-size: 0.8rem; color: var(--text-light); }

/* === BLOG SECTION === */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.blog-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.blog-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.blog-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}
.blog-cat {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--secondary);
  color: white;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}
.blog-body { padding: 22px; }
.blog-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 10px;
  font-size: 0.8rem;
  color: var(--text-light);
}
.blog-body h3 { font-size: 1.05rem; color: var(--dark); margin-bottom: 10px; font-family: 'Inter', sans-serif; font-weight: 600; }
.blog-body p { font-size: 0.88rem; margin-bottom: 16px; }
.blog-read-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.blog-read-more:hover { gap: 8px; color: var(--secondary); }

/* === QUOTE FORM === */
.quote-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--dark-2) 100%);
  position: relative;
  overflow: hidden;
}
.quote-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,193,7,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.quote-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.quote-info h2 { color: white; margin-bottom: 16px; }
.quote-info p { color: rgba(255,255,255,0.7); margin-bottom: 30px; }
.quote-bullets { display: flex; flex-direction: column; gap: 12px; }
.quote-bullet {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
}
.quote-bullet .icon { font-size: 1.3rem; color: var(--accent); }

.quote-form {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.form-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-sub { color: var(--text-light); font-size: 0.9rem; margin-bottom: 24px; }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-group label span { color: var(--secondary); }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--bg);
  transition: var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--primary); background: white; box-shadow: 0 0 0 3px rgba(21,101,192,0.1); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-success {
  display: none;
  background: #E8F5E9;
  border: 1px solid #A5D6A7;
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  color: var(--success);
  font-weight: 600;
}

/* === FLOATING CONTACT === */
.floating-contact {
  position: fixed;
  right: 20px;
  bottom: 100px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}
.float-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  transition: var(--transition);
  position: relative;
}
.float-btn:hover { transform: scale(1.12); }
.float-btn.phone { background: linear-gradient(135deg, #1565C0, #1E88E5); }
.float-btn.zalo { background: linear-gradient(135deg, #006AF5, #00AAFF); }
.float-btn.fb { background: linear-gradient(135deg, #1877F2, #4294FF); }

.float-btn::before {
  content: attr(data-tooltip);
  position: absolute;
  right: 64px;
  background: var(--dark);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.float-btn:hover::before { opacity: 1; right: 68px; }

.float-scroll-top {
  position: fixed;
  right: 20px;
  bottom: 30px;
  width: 44px;
  height: 44px;
  background: var(--dark);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  transition: var(--transition);
  border: none;
  font-size: 1.1rem;
}
.float-scroll-top.show { opacity: 1; }
.float-scroll-top:hover { background: var(--primary); }

/* === FOOTER === */
footer {
  background: var(--dark);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 30px;
}

.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-desc { color: rgba(255,255,255,0.55); font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; }

.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  text-decoration: none;
}
.social-btn:hover { background: var(--primary); transform: translateY(-2px); }

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--secondary);
  display: inline-block;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover { color: var(--accent); padding-left: 4px; }

.footer-contact { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: flex-start; gap: 12px; }
.contact-icon { font-size: 1.1rem; color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.contact-text { color: rgba(255,255,255,0.7); font-size: 0.9rem; line-height: 1.5; }
.contact-text strong { color: white; display: block; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { color: rgba(255,255,255,0.45); font-size: 0.85rem; }
.footer-links-inline {
  display: flex;
  gap: 20px;
}
.footer-links-inline a {
  color: rgba(255,255,255,0.45);
  font-size: 0.85rem;
  transition: var(--transition);
}
.footer-links-inline a:hover { color: var(--accent); }

/* === BREADCRUMB === */
.breadcrumb {
  background: var(--bg);
  padding: 14px 0;
  margin-top: var(--header-h);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}
.breadcrumb-list a { color: var(--primary); }
.breadcrumb-list span { color: var(--text-light); }
.breadcrumb-list .sep { color: var(--border); }

/* === PAGE HERO (inner pages) === */
.page-hero {
  background: linear-gradient(135deg, var(--dark), var(--dark-2), var(--primary-dark));
  padding: calc(var(--header-h) + 60px) 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(21,101,192,0.2) 0%, transparent 70%);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { color: white; margin-bottom: 14px; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* === BLOG POST === */
.post-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
}
.post-content { background: white; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow); }
.post-header { margin-bottom: 30px; }
.post-title { font-size: clamp(1.5rem, 3vw, 2.2rem); color: var(--dark); margin-bottom: 16px; }
.post-meta { display: flex; gap: 20px; color: var(--text-light); font-size: 0.85rem; flex-wrap: wrap; }
.post-meta span { display: flex; align-items: center; gap: 6px; }
.post-image {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  margin-bottom: 30px;
}

.post-body h2 { font-size: 1.5rem; color: var(--dark); margin: 30px 0 14px; }
.post-body h3 { font-size: 1.2rem; color: var(--dark); margin: 24px 0 12px; }
.post-body p { color: var(--text); line-height: 1.8; margin-bottom: 16px; }
.post-body ul, .post-body ol { padding-left: 24px; margin-bottom: 16px; color: var(--text-light); line-height: 1.8; }
.post-body li { margin-bottom: 8px; }
.post-body strong { color: var(--dark); }
.post-body .highlight-box {
  background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 24px 0;
}
.post-body .warning-box {
  background: #FFF8E1;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.widget-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--secondary);
}
.recent-posts { display: flex; flex-direction: column; gap: 14px; }
.recent-post { display: flex; gap: 12px; }
.recent-post .post-thumb {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.recent-post a { color: var(--dark); font-weight: 600; font-size: 0.88rem; line-height: 1.4; }
.recent-post a:hover { color: var(--primary); }
.recent-post small { color: var(--text-light); font-size: 0.78rem; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { 
  padding: 5px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--text-light);
  transition: var(--transition);
  text-decoration: none;
}
.tag:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* === FAQ === */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(21,101,192,0.08); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  background: white;
  font-weight: 600;
  color: var(--dark);
  font-size: 0.95rem;
  user-select: none;
}
.faq-question:hover { background: var(--bg); }
.faq-icon {
  font-size: 1.2rem;
  transition: var(--transition);
  color: var(--primary);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 0 22px 18px;
  background: white;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* === CTA BANNER === */
.cta-banner {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  padding: 60px 0;
  text-align: center;
}
.cta-banner h2 { color: white; margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(230,81,0,0.4); }
  50% { box-shadow: 0 0 0 12px rgba(230,81,0,0); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .pain-grid { grid-template-columns: 1fr; gap: 30px; }
  .post-container { grid-template-columns: 1fr; }
  .quote-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .section { padding: 55px 0; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.7rem; }

  nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--dark); flex-direction: column; align-items: flex-start; padding: 20px; gap: 4px; box-shadow: var(--shadow-md); }
  nav.open { display: flex; }
  .nav-link { width: 100%; padding: 12px 16px; }
  .header-cta .btn { display: none; }
  .menu-toggle { display: flex; }

  .hero { text-align: center; padding-top: calc(var(--header-h) + 30px); }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .hero-grid { grid-template-columns: 1fr; }

  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .quote-form { padding: 24px; }
  .trust-items { gap: 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .floating-contact { right: 12px; bottom: 80px; }
}