/* Google Fonts Import: Noto Serif for a corporate, reliable legal feel */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif:wght@300;400;500;600;700;800;900&display=swap');

/* Color variables based on logo and corporate design rules */
:root {
  --primary-color: #1E293B;      /* Dark Slate */
  --brand-blue: #0084FF;         /* Dodger Blue from Logo */
  --brand-blue-hover: #0066CC;   /* Darker Blue */
  --brand-light: #F0F7FF;        /* Extremely soft blue wash */
  --brand-navy: #1B334B;         /* Viet My Dark Navy style */
  --accent-color: #FF8C00;       /* Orange accent for secondary CTAs */
  --text-dark: #1E293B;          /* Dark Gray */
  --text-muted: #64748B;         /* Muted slate gray */
  --bg-light: #FAFDFD;           /* Base light background */
  --bg-white: #FFFFFF;
  
  --border-radius: 8px;          /* Harder, formal borders */
  --card-shadow: 0 4px 15px rgba(0, 132, 255, 0.05);
  --hover-shadow: 0 10px 25px rgba(0, 132, 255, 0.12);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --max-width: 1200px;
}

/* Reset and Core Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Serif', serif;
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Serif', serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--brand-navy);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

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

/* Utilities */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  color: var(--brand-blue);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.section-title {
  font-size: 2.25rem;
  color: var(--brand-navy);
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--brand-blue);
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--brand-blue);
  color: var(--bg-white);
}

.btn-primary:hover {
  background-color: var(--brand-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.25);
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.btn-secondary:hover {
  background-color: var(--brand-light);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--accent-color);
  color: var(--bg-white);
}

.btn-accent:hover {
  background-color: #e07b00;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 140, 0, 0.25);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  padding: 1rem 0;
  background-color: var(--bg-white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.site-header.scrolled {
  padding: 0.75rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Redesigned Logo block to match user uploaded logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-icon-wrap {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
}

.logo-text-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.logo-brand-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--brand-blue);
  letter-spacing: 0.5px;
  line-height: 1.1;
  text-transform: uppercase;
}

.logo-tagline {
  font-size: 0.52rem;
  font-weight: 700;
  color: var(--brand-blue);
  letter-spacing: 0.2px;
  line-height: 1.2;
  text-transform: uppercase;
  margin-top: 0.2rem;
  border-top: 1px solid var(--brand-blue);
  padding-top: 0.15rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--brand-navy);
  padding: 0.5rem 0;
}

.nav-link:hover {
  color: var(--brand-blue);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--brand-blue);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  font-weight: 600;
  font-size: 0.9rem;
  background-color: var(--brand-blue);
  color: var(--bg-white);
  padding: 0.6rem 1.25rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav-cta:hover {
  background-color: var(--brand-blue-hover);
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.2);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--brand-navy);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section (Revised as 2-column details & background logo style) */
.hero-section {
  background-color: var(--brand-light);
  padding-top: 9rem;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
  border-bottom: 4px solid var(--brand-blue);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Large light watermark globe logo behind content */
.hero-section::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' opacity='0.03' fill='%230084FF'%3E%3Cpath d='M50 2A48 48 0 1 0 98 50A48 48 0 0 0 50 2zm0 6A42 42 0 1 1 8 50A42 42 0 0 1 50 8zm-3 8v12c-1.5 0-3 .2-4.5.5l-4-11.3c2.7-.8 5.6-1.2 8.5-1.2zm6 0c2.9 0 5.8.4 8.5 1.2l-4 11.3c-1.5-.3-3-.5-4.5-.5V16zm-19 3.5l4 11.3c-1.4.7-2.7 1.5-3.9 2.5l-8-9c2.4-1.8 5-3.4 7.9-4.8zm32 0c2.9 1.4 5.5 3 7.9 4.8l-8 9c-1.2-1-2.5-1.8-3.9-2.5l4-11.3z'/%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
  z-index: 1;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-white);
  border: 1px solid rgba(0, 132, 255, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-blue);
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--brand-navy);
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.hero-title span {
  color: var(--brand-blue);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-dark);
  margin-bottom: 2rem;
  text-align: justify;
}

/* Quick link buttons styled like Viet My site */
.hero-quick-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.quick-link-item {
  background-color: var(--bg-white);
  border: 1px solid #E2E8F0;
  border-radius: var(--border-radius);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  color: var(--brand-navy);
  transition: var(--transition);
  box-shadow: var(--card-shadow);
}

.quick-link-item:hover {
  border-color: var(--brand-blue);
  background-color: var(--brand-light);
  transform: translateX(5px);
}

.quick-link-item i {
  color: var(--brand-blue);
  font-size: 1.2rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
}

/* Hero Right Side Graphics */
.hero-image-panel {
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-graphic-card {
  background: var(--bg-white);
  border: 1px solid #E2E8F0;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 380px;
  text-align: center;
  border-top: 5px solid var(--brand-blue);
}

.hero-graphic-card h3 {
  font-size: 1.25rem;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
}

.hero-graphic-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.hero-graphic-card img {
  border-radius: 4px;
  margin-bottom: 1.5rem;
  border: 1px solid #E2E8F0;
}

/* Services Section (Redesigned like hb_whys_service of Viet My) */
.services-section {
  background-color: var(--bg-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background-color: var(--bg-white);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  box-shadow: var(--card-shadow);
  border: 1px solid #E2E8F0;
  transition: var(--transition);
  position: relative;
  text-align: center;
}

/* Dynamic line hover effect */
.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background-color: var(--brand-blue);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
  border-color: var(--brand-blue);
}

.service-card:hover::after {
  transform: scaleX(1);
}

.service-icon {
  width: 70px;
  height: 70px;
  background-color: var(--brand-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
  font-size: 1.75rem;
  margin: 0 auto 1.5rem auto;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background-color: var(--brand-blue);
  color: var(--bg-white);
}

.service-title {
  font-size: 1.25rem;
  color: var(--brand-navy);
  margin-bottom: 1rem;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 1.5rem;
  min-height: 80px;
  text-align: justify;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--brand-blue);
}

.service-card:hover .service-link {
  color: var(--brand-blue-hover);
}

/* Calculator Section (Integrated with brand blue color scheme) */
.calculator-section {
  background-color: var(--brand-light);
  position: relative;
  border-radius: var(--border-radius);
  margin: 2rem auto;
  width: 95%;
  max-width: var(--max-width);
  border: 1px solid rgba(0, 132, 255, 0.1);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.calc-info h2 {
  font-size: 2rem;
  color: var(--brand-navy);
  margin-bottom: 1.25rem;
}

.calc-info p {
  color: var(--text-dark);
  margin-bottom: 2rem;
}

.calc-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.calc-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  color: var(--brand-navy);
}

.calc-feature i {
  color: var(--brand-blue);
}

.calc-box {
  background-color: var(--bg-white);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  box-shadow: var(--hover-shadow);
  border: 1px solid #E2E8F0;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 0.5rem;
  color: var(--brand-navy);
}

.form-select {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  border: 1px solid #CBD5E1;
  background-color: #F8FAFC;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-dark);
  outline: none;
  width: 100%;
}

.form-select:focus {
  border-color: var(--brand-blue);
}

.range-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.form-range {
  flex-grow: 1;
  height: 6px;
  background: #E2E8F0;
  outline: none;
  border-radius: 3px;
  -webkit-appearance: none;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand-blue);
  cursor: pointer;
  border: 2px solid var(--bg-white);
  box-shadow: 0 2px 6px rgba(0, 132, 255, 0.4);
}

.range-value {
  font-weight: 700;
  color: var(--brand-blue);
  min-width: 110px;
  text-align: right;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.95rem;
  font-weight: 600;
}

.checkbox-container input {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid #CBD5E1;
  border-radius: 4px;
  display: inline-block;
  position: relative;
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.checkmark::after {
  content: '';
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark::after {
  display: block;
}

.calc-result {
  margin-top: 2rem;
  border-top: 2px dashed #E2E8F0;
  padding-top: 1.5rem;
  text-align: center;
}

.calc-price-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.calc-price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--brand-blue);
  margin-bottom: 1.25rem;
}

.calc-price span {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-muted);
}

.calc-cta {
  width: 100%;
}

/* Stats section (Revised like hb_whychoose) */
.stats-section {
  background-color: var(--brand-navy);
  color: var(--bg-white);
  padding: 4rem 0;
  border-bottom: 4px solid var(--brand-blue);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  text-align: center;
}

.stat-card {
  padding: 1.5rem;
}

.stat-icon {
  width: 70px;
  height: 70px;
  border: 2px solid var(--brand-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  font-size: 1.5rem;
  color: var(--brand-blue);
  background-color: rgba(255, 255, 255, 0.05);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bg-white);
  margin-bottom: 0.5rem;
}

.stat-desc {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

/* FAQ & Video Section (Two columns layout like hb_faq_video of Viet My) */
.faq-section {
  background-color: var(--bg-light);
}

.faq-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: flex-start;
}

/* Accordion FAQ layout */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background-color: var(--bg-white);
  border: 1px solid #E2E8F0;
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item.active {
  border-color: var(--brand-blue);
  box-shadow: var(--card-shadow);
}

.accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}

.accordion-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-navy);
  margin: 0;
  transition: var(--transition);
}

.accordion-item.active .accordion-title {
  color: var(--brand-blue);
}

.accordion-icon {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--brand-blue);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 1.5rem;
}

.accordion-item.active .accordion-content {
  padding: 0 1.5rem 1.5rem 1.5rem;
}

.accordion-text {
  font-size: 0.92rem;
  color: var(--text-dark);
}

/* FAQ Right Side Video placeholder block */
.faq-video-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.video-card {
  background-color: var(--bg-white);
  border: 1px solid #E2E8F0;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.video-thumb {
  position: relative;
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, #1B334B 0%, #0084FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
}

.video-play-btn {
  width: 60px;
  height: 60px;
  background-color: var(--brand-blue);
  color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(0, 132, 255, 0.4);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.video-play-btn:hover {
  transform: scale(1.1);
  background-color: var(--brand-blue-hover);
}

.video-info {
  padding: 1.25rem;
}

.video-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand-navy);
}

/* Contact / Consultation Section (Same form but blue branding styles) */
.contact-section {
  background-color: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin: 2.5rem 0;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.contact-icon {
  font-size: 1.25rem;
  color: var(--brand-blue);
  margin-top: 0.25rem;
}

.contact-text h4 {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  letter-spacing: 0.5px;
}

.contact-text p, .contact-text a {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-navy);
}

.contact-socials {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 40px;
  height: 40px;
  background-color: var(--brand-light);
  color: var(--brand-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.social-icon:hover {
  background-color: var(--brand-blue);
  color: var(--bg-white);
  transform: translateY(-3px);
}

.contact-form-panel {
  background-color: var(--bg-white);
  border-radius: var(--border-radius);
  padding: 3rem;
  box-shadow: var(--hover-shadow);
  border: 1px solid #E2E8F0;
}

.contact-form-panel h3 {
  font-size: 1.5rem;
  color: var(--brand-navy);
  margin-bottom: 0.5rem;
}

.contact-form-panel p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.92rem;
}

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

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 4px;
  border: 1px solid #CBD5E1;
  background-color: #F8FAFC;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--text-dark);
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(0, 132, 255, 0.12);
  background-color: var(--bg-white);
}

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

.form-submit-btn {
  width: 100%;
}

.form-notification {
  display: none;
  background-color: var(--brand-light);
  color: var(--brand-blue-hover);
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(0, 132, 255, 0.15);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
}

.form-notification.show {
  display: block;
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer Section */
.site-footer {
  background-color: var(--brand-navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 5rem 0 2rem 0;
  border-top: 4px solid var(--brand-blue);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 0.8fr);
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  color: var(--bg-white);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.footer-brand p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: var(--bg-white);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--brand-blue);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-links a:hover {
  color: var(--brand-blue);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.82rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.82rem;
}

.footer-bottom-links a:hover {
  color: var(--brand-blue);
}

/* Floating Widgets */
.widget-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
}

.widget-btn {
  width: 55px;
  height: 55px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
  font-size: 1.35rem;
}

.widget-btn:hover {
  transform: translateY(-5px) scale(1.05);
}

.widget-btn.zalo {
  background-color: #0084FF;
}

.widget-btn.call {
  background-color: #FF8C00;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 140, 0, 0.6); }
  70% { box-shadow: 0 0 0 15px rgba(255, 140, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 140, 0, 0); }
}

/* Responsiveness */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .calc-grid, .faq-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .footer-grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--brand-navy);
    flex-direction: column;
    padding: 6rem 2rem;
    align-items: flex-start;
    gap: 2rem;
    transition: var(--transition);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  }
  .nav-menu.active {
    right: 0;
  }
  .nav-link {
    color: var(--bg-white);
  }
  .nav-cta {
    background-color: var(--brand-blue);
  }
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -8px);
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-quick-links {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .calc-box, .contact-form-panel {
    padding: 2rem 1.5rem;
  }
}