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

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

:root {
  --primary-color: #1a5c2a;
  --primary-dark: #0d3b1a;
  --primary-light: #2e7d32;
  --primary-gradient: linear-gradient(135deg, #0d3b1a 0%, #1a5c2a 50%, #1b5e20 100%);
  --secondary-color: #e8572a;
  --text-color: #1a1a2e;
  --text-light: #555;
  --light-bg: #f4f6f8;
  --white: #ffffff;
  --border-color: #dce1e6;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 40px rgba(13, 59, 26, 0.15);
  --radius: 14px;
}

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-color);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--light-bg);
}

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

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

main {
  padding: 60px 0;
}

.section {
  padding: 60px 0;
  text-align: center;
}

.section h1,
.section h2 {
  margin-bottom: 25px;
  color: var(--primary-color);
}

.muted {
  color: #666;
  font-size: 15px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 10px;
  background: var(--primary-gradient);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(13, 59, 26, 0.35);
}

/* ===== HEADER ===== */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  gap: 30px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-image {
  height: 55px;
  width: auto;
  display: block;
}

.logo strong {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  line-height: 1;
  font-weight: 900;
}

.logo .transport {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0;
  position: relative;
  top: 0;
  margin-left: 0;
}

/* ===== NAVIGATION ===== */
nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  padding: 10px 18px;
  border-radius: 10px;
  position: relative;
}

nav a:hover {
  color: var(--primary-color);
  background: rgba(13, 59, 26, 0.06);
}

nav a.active {
  color: var(--white);
  background: var(--primary-gradient);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(13, 59, 26, 0.2);
}

.btn-header {
  padding: 10px 24px;
  background: var(--primary-gradient);
  color: white;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-header:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(13, 59, 26, 0.3);
}

/* Auth Button */
.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  background: var(--primary-gradient);
  color: white !important;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(13, 59, 26, 0.4);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

.btn-login i {
  font-size: 1rem;
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #071a0d 0%, #0d3b1a 50%, #1a5c2a 100%);
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.7;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(13, 59, 26, 0.92) 0%, rgba(7, 26, 13, 0.88) 50%, rgba(26, 92, 42, 0.85) 100%);
  z-index: 1;
}

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

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 20px;
  text-align: center;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: white;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 40px;
  color: white;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.6);
  line-height: 1.6;
}

/* Tracking Box */
.tracking-box {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  padding: 35px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.tracking-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 12px 24px;
  border: 2px solid var(--border-color);
  background: white;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  color: var(--text-light);
}

.tab-btn.active {
  background: var(--primary-gradient);
  color: white;
  border-color: var(--primary-dark);
  box-shadow: 0 4px 15px rgba(13, 59, 26, 0.3);
}

.tab-btn:hover:not(.active) {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13, 59, 26, 0.1);
}

/* Tracking Form */
.tracking-form {
  text-align: center;
}

.tracking-input {
  width: 100%;
  max-width: 500px;
  padding: 12px 20px;
  border: 2px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  margin: 0 auto 15px;
  display: block;
}

.btn-track {
  padding: 14px 40px;
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.3px;
}

.btn-track:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(13, 59, 26, 0.35);
}

.result-box {
  margin-top: 20px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 8px;
  text-align: left;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  display: none;
}

.result-box:not(:empty) {
  display: block;
}

/* Rate Calculator Fields */
.rate-calculator .field {
  margin-bottom: 15px;
  text-align: left;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.rate-calculator .field label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  color: #333;
}

.rate-calculator .field input,
.rate-calculator .field select {
  width: 100%;
  padding: 10px;
  border: 2px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
}

.rate-calculator .field.dims {
  display: flex;
  gap: 10px;
}

.rate-calculator .field.dims input {
  flex: 1;
}

/* Services Section */
.services-section {
  padding: 90px 0;
  text-align: center;
  background: var(--white);
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: var(--primary-dark);
  font-weight: 800;
  letter-spacing: -0.3px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
  justify-items: center;
}

.service-card {
  background: white;
  border-radius: 18px;
  padding: 40px 30px;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
  max-width: 360px;
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(13, 59, 26, 0.1);
}

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

.service-card h3 {
  color: var(--primary-dark);
  margin-bottom: 15px;
  font-size: 1.3rem;
  font-weight: 700;
}

.service-card p {
  color: var(--text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}

.service-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}

.service-link:hover {
  color: var(--primary-dark);
  transform: translateX(5px);
}

.service-icon {
  margin: 0 auto 25px;
  display: flex;
  justify-content: center;
}

.service-icon img {
  width: 85px;
  height: 85px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.service-card:hover .service-icon img {
  transform: scale(1.05);
}

/* Why Choose Us */
.why-choose {
  padding: 90px 0;
  background: var(--light-bg);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.why-content {
  text-align: left;
}

.why-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.why-image img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  background: var(--primary-gradient);
  color: white;
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-block;
  padding: 15px 40px;
  background: white;
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 5px;
  font-weight: 600;
  transition: all 0.3s;
}

.btn-secondary:hover {
  background: var(--light-bg);
}

/* Footer */
.footer {
  background: #0a0f0d;
  color: white;
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  margin-bottom: 20px;
  font-size: 18px;
}

.footer-col p {
  opacity: 0.8;
  line-height: 1.8;
}

.footer-col a {
  display: block;
  color: white;
  text-decoration: none;
  opacity: 0.8;
  margin-bottom: 10px;
  transition: opacity 0.3s;
}

.footer-col a:hover {
  opacity: 1;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.3s;
}

.social-links a:hover {
  background: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  opacity: 0.8;
}

/* Page Hero */
.page-hero {
  position: relative;
  padding: 80px 0;
  min-height: 260px;
  display: flex;
  align-items: center;
  color: #fff;
}

.page-hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.hero-content,
.page-hero .container .hero-content {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.hero-overlay,
.page-hero-overlay {
  display: none;
}

.page-hero::before,
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15), rgba(0,0,0,0.25));
  z-index: 0;
  pointer-events: none;
}

/* About Intro */
.about-intro {
  padding: 80px 0;
  background: white;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-content h2 {
  font-size: 36px;
  color: var(--primary-color);
  margin-bottom: 25px;
}

.about-intro-content p {
  font-size: 16px;
  line-height: 1.8;
  color: #555;
  margin-bottom: 20px;
}

.about-intro-image img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Mission & Vision */
.mission-vision {
  padding: 80px 0;
  background: var(--light-bg);
}

.mv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.mv-card {
  background: white;
  padding: 40px 30px;
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.mv-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.mv-icon {
  width: 140px;
  height: 140px;
  border-radius: 16px;
  overflow: hidden;
  margin: 0 auto 25px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.mv-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mv-card h3 {
  font-size: 24px;
  color: var(--text-color);
  margin-bottom: 15px;
}

.mv-card p {
  color: #666;
  line-height: 1.8;
}

/* Our Strengths */
.our-strengths {
  padding: 80px 0;
  background: white;
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.strength-item {
  padding: 30px;
  border-left: 4px solid var(--primary-color);
  background: var(--light-bg);
  border-radius: 12px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.strength-item:hover {
  background: white;
  box-shadow: var(--shadow-hover);
  border-left-color: var(--primary-dark);
}

.strength-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-color);
  opacity: 0.3;
  margin-bottom: 15px;
}

.strength-item h3 {
  font-size: 22px;
  color: var(--text-color);
  margin-bottom: 12px;
}

.strength-item p {
  color: #666;
  line-height: 1.7;
}

/* Statistics */
.statistics {
  padding: 80px 0;
  background: var(--primary-gradient);
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.stat-item {
  text-align: center;
  padding: 20px;
}

.stat-number {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.stat-label {
  font-size: 18px;
  opacity: 0.95;
}

/* Commitment */
.commitment {
  padding: 80px 0;
  background: white;
}

.commitment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.commitment-card {
  text-align: center;
  padding: 40px 25px;
  background: var(--light-bg);
  border-radius: 10px;
  transition: all 0.3s;
}

.commitment-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.commitment-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Banner */
.mv-banner {
  margin-bottom: 50px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.mv-banner img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* Milk Brand Section */
.milk-brand-list {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 15px 0;
}

.milk-brand {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(13, 59, 26, 0.08);
  color: var(--primary-color);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}

.milk-brand:hover {
  background: rgba(13, 59, 26, 0.15);
  transform: translateY(-1px);
}

.card {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 32px;
  margin-bottom: 30px;
  text-align: left;
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
}

.link-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.link-grid .btn {
  background: rgba(13, 59, 26, 0.08);
  color: var(--primary-color);
}

.link-grid .btn:hover {
  background: rgba(13, 59, 26, 0.15);
}

table.card {
  width: 100%;
  border-collapse: collapse;
  padding: 0;
  overflow: hidden;
}

table.card th,
table.card td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

table.card th {
  background: var(--primary-dark);
  color: #fff;
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.5px;
  font-weight: 600;
}

table.card tr:nth-child(even) td {
  background: var(--light-bg);
}

/* Contact Section */
.contact-section {
  padding: 80px 0;
  background: white;
}

.contact-section .muted {
  max-width: 640px;
  margin: 0 auto 40px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.contact-card {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 16px;
  padding: 30px;
  text-align: left;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.contact-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(13, 59, 26, 0.08), rgba(26, 92, 42, 0.12));
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 15px;
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
}

.contact-link:hover {
  color: var(--secondary-color);
}

.contact-note {
  display: inline-block;
  margin-top: 12px;
  color: #777;
  font-size: 14px;
}

.contact-actions {
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.contact-actions .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--primary-color);
  color: #fff;
}

.contact-actions .btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 8px 25px rgba(13, 59, 26, 0.35);
}

.contact-map {
  margin-top: 50px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.contact-map iframe {
  width: 100%;
  height: 360px;
  border: 0;
  filter: saturate(1.1);
}

.solutions-cta h2,
.solutions-cta p {
  color: #000; /* chữ màu đen */
}

/* Why-partner two-column layout */
.why-partner {
  padding: 80px 0;
  background: var(--white);
}

.why-partner-grid {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 40px;
  align-items: center;
}

.why-partner-content h2 {
  color: var(--primary-color);
  margin-bottom: 16px;
}

.why-partner-content p {
  color: var(--text-color);
  margin-bottom: 18px;
  max-width: 720px;
}

/* styled list with separators like sample */
.why-list-cta {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
}

.why-list-cta li {
  position: relative;
  padding: 16px 0;
  border-bottom: 1px solid #e6e6e6;
  padding-left: 18px;
  color: #000; /* chữ màu đen */
}

.why-list-cta li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary-color);
  font-weight: 700;
  font-size: 18px;
}

/* CTA inline link under list */
.cta-link {
  display: inline-block;
  margin-top: 10px;
  color: #c8102e; /* red like sample */
  text-decoration: underline;
  font-weight: 600;
}

/* image column */
.why-partner-image img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  display: block;
}

/* Why List Styling */
.why-list {
  list-style: none;
  padding: 0;
  margin: 0 0 30px 0;
}

.why-list li {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
}

.why-list li:last-child {
  border-bottom: none;
}

.why-list li:hover {
  padding-left: 8px;
}

.why-list li i {
  color: var(--primary-color);
  font-size: 1.3rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.why-list li strong {
  display: block;
  color: var(--primary-dark);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.why-list li p {
  color: var(--text-light);
  font-size: 0.92rem;
  margin: 0;
}

/* Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--primary-gradient);
  color: #fff;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(13, 59, 26, 0.35);
}

/* Simple Footer */
.site-footer-simple {
  background: #071a0d;
  padding: 30px 0;
  color: rgba(255, 255, 255, 0.7);
  border-top: 3px solid var(--primary-color);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.footer-inner p {
  font-size: 0.9rem;
  font-weight: 500;
}

.footer-links {
  display: flex;
  gap: 25px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

/* Smooth scrollbar */
html {
  scroll-behavior: smooth;
}

/* Selection color */
::selection {
  background: rgba(13, 59, 26, 0.15);
  color: var(--primary-dark);
}

/* =====================================================
   RESPONSIVE DESIGN - Mobile & Tablet Optimization
   ===================================================== */

/* Container - Consistent padding */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Tablet - 768px to 1024px */
@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }
  
  .header-content {
    flex-direction: column;
    gap: 15px;
    text-align: center;
    padding: 10px 0;
  }
  
  .logo-image {
    height: 48px;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  nav a {
    padding: 8px 14px;
    font-size: 0.9rem;
  }
  
  .hero {
    min-height: 480px;
  }
  
  .hero-title {
    font-size: 2.4rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .why-grid,
  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  
  .why-partner-grid {
    grid-template-columns: 1fr;
  }

  .why-partner-image {
    order: -1;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .service-card {
    max-width: 100%;
  }
  
  .mv-grid,
  .strengths-grid,
  .commitment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-title {
    font-size: 1.8rem;
    margin-bottom: 35px;
  }
}

/* Mobile - up to 768px */
@media (max-width: 768px) {
  body {
    font-size: 15px;
    line-height: 1.6;
  }
  
  .container {
    padding: 0 16px;
  }
  
  /* ===== HEADER MOBILE ===== */
  .header-content {
    padding: 10px 0;
    gap: 10px;
  }
  
  .logo-image {
    height: 42px;
  }
  
  nav {
    gap: 4px;
    width: 100%;
    justify-content: center;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 2px;
  }

  nav::-webkit-scrollbar {
    display: none;
  }
  
  nav a {
    padding: 8px 12px;
    font-size: 0.82rem;
    white-space: nowrap;
    border-radius: 8px;
    flex-shrink: 0;
  }

  nav a.active {
    padding: 8px 14px;
  }
  
  .btn-login {
    padding: 8px 18px;
    font-size: 0.82rem;
    gap: 6px;
  }

  .header-actions {
    gap: 8px;
  }
  
  /* ===== HERO MOBILE ===== */
  .hero {
    min-height: 420px;
    padding: 0;
  }
  
  .hero-content {
    padding: 30px 10px;
  }
  
  .hero-title {
    font-size: 1.7rem;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.3px;
  }
  
  .hero-subtitle {
    font-size: 0.95rem;
    margin-bottom: 25px;
    line-height: 1.5;
  }
  
  /* Page Hero */
  .page-hero {
    min-height: 180px;
    padding: 50px 0;
  }
  
  /* ===== TRACKING BOX MOBILE ===== */
  .tracking-box {
    padding: 18px 14px;
    margin: 0;
    border-radius: 14px;
  }
  
  .tracking-tabs {
    gap: 6px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .tracking-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .tab-btn {
    padding: 10px 14px;
    font-size: 0.82rem;
    flex: 0 0 auto;
    border-radius: 8px;
    border-width: 1.5px;
  }
  
  .tracking-input {
    padding: 12px 14px;
    font-size: 16px; /* prevents iOS zoom */
    border-radius: 8px;
  }
  
  .btn-track {
    padding: 12px 28px;
    font-size: 0.92rem;
    width: 100%;
    border-radius: 8px;
  }
  
  /* Rate Calculator */
  .rate-calculator .field {
    max-width: 100%;
  }
  
  .rate-calculator .field label {
    font-size: 0.88rem;
  }

  .rate-calculator .field input,
  .rate-calculator .field select {
    font-size: 16px;
    padding: 10px 12px;
  }
  
  .rate-calculator .field.dims {
    flex-direction: column;
    gap: 8px;
  }
  
  .rate-calculator .field.dims input {
    width: 100%;
  }
  
  .result-box {
    padding: 14px;
    font-size: 0.88rem;
    border-radius: 10px;
  }
  
  /* ===== SERVICES MOBILE ===== */
  .services-section {
    padding: 50px 0;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 30px;
  }
  
  .service-card {
    max-width: 100%;
    padding: 24px 20px;
    border-radius: 14px;
  }
  
  .service-card h3 {
    font-size: 1.1rem;
  }

  .service-card p {
    font-size: 0.9rem;
  }
  
  .service-icon img {
    width: 65px;
    height: 65px;
    max-width: 65px;
    border-radius: 12px;
  }
  
  .section-title {
    font-size: 1.5rem;
    margin-bottom: 25px;
    padding: 0 10px;
  }

  .service-link {
    font-size: 0.9rem;
  }
  
  /* ===== WHY CHOOSE / PARTNER MOBILE ===== */
  .why-choose,
  .why-partner {
    padding: 50px 0;
  }
  
  .why-grid,
  .why-partner-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .why-content {
    text-align: left;
  }
  
  .why-content h2,
  .why-partner-content h2 {
    font-size: 1.4rem;
    line-height: 1.3;
  }

  .why-partner-content p {
    font-size: 0.92rem;
    line-height: 1.6;
  }
  
  .why-list li {
    font-size: 0.92rem;
    padding: 12px 0;
    gap: 12px;
  }

  .why-list li i {
    font-size: 1.1rem;
  }

  .why-list li strong {
    font-size: 0.98rem;
  }

  .why-list li p {
    font-size: 0.85rem;
  }

  .why-list-cta li {
    font-size: 0.92rem;
    padding: 12px 0;
    padding-left: 16px;
  }

  .why-image img {
    border-radius: 12px;
    max-height: 280px;
    object-fit: cover;
    width: 100%;
  }

  .why-partner-image img {
    border-radius: 10px;
    max-height: 240px;
    object-fit: cover;
  }

  .btn-primary {
    padding: 12px 24px;
    font-size: 0.92rem;
    width: 100%;
    justify-content: center;
    border-radius: 10px;
  }

  .cta-link {
    font-size: 0.92rem;
  }
  
  /* ===== CTA SECTION MOBILE ===== */
  .cta-section {
    padding: 50px 0;
  }
  
  .cta-content h2 {
    font-size: 1.4rem;
  }
  
  .cta-content p {
    font-size: 0.92rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons .btn,
  .cta-buttons .btn-secondary {
    width: 100%;
    text-align: center;
  }
  
  /* ===== ABOUT SECTIONS MOBILE ===== */
  .about-intro,
  .mission-vision,
  .our-strengths,
  .statistics,
  .commitment {
    padding: 50px 0;
  }
  
  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .about-intro-content h2 {
    font-size: 1.4rem;
  }

  .about-intro-content p {
    font-size: 0.92rem;
  }

  .about-intro-image img {
    border-radius: 10px;
    max-height: 250px;
    object-fit: cover;
    width: 100%;
  }
  
  .mv-grid,
  .strengths-grid,
  .commitment-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .mv-card,
  .commitment-card {
    padding: 28px 20px;
    border-radius: 14px;
  }
  
  .mv-icon,
  .commitment-icon {
    width: 100px;
    height: 100px;
    border-radius: 14px;
  }
  
  .mv-card h3,
  .commitment-card h3 {
    font-size: 1.1rem;
  }

  .mv-card p,
  .commitment-card p {
    font-size: 0.9rem;
    line-height: 1.6;
  }
  
  .mv-banner img {
    height: 180px;
    border-radius: 10px;
  }

  .strength-item {
    padding: 22px 18px;
    border-radius: 10px;
  }

  .strength-number {
    font-size: 36px;
  }

  .strength-item h3 {
    font-size: 1.05rem;
  }

  .strength-item p {
    font-size: 0.88rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-item {
    padding: 15px 10px;
  }
  
  .stat-number {
    font-size: 2rem;
  }

  .stat-label {
    font-size: 0.85rem;
  }
  
  /* ===== PRICING TABLE MOBILE ===== */
  table.card {
    font-size: 0.85rem;
    border-radius: 12px;
  }
  
  table.card th,
  table.card td {
    padding: 11px 10px;
  }

  table.card th {
    font-size: 0.75rem;
  }
  
  /* ===== CARD / LINK GRID MOBILE ===== */
  .link-grid {
    gap: 8px;
  }
  
  .link-grid .btn {
    padding: 8px 14px;
    font-size: 0.85rem;
  }
  
  .card {
    padding: 20px 16px;
    margin-bottom: 16px;
    border-radius: 12px;
  }
  
  .card h2 {
    font-size: 1.2rem;
  }

  .card p {
    font-size: 0.9rem;
  }
  
  /* ===== FOOTER MOBILE ===== */
  .footer {
    padding: 40px 0 20px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .site-footer-simple {
    padding: 22px 0;
    border-top-width: 2px;
  }
  
  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .footer-inner p {
    font-size: 0.85rem;
  }
  
  .footer-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
  }

  .footer-links a {
    font-size: 0.85rem;
  }
  
  /* ===== CONTACT MOBILE ===== */
  .contact-section {
    padding: 50px 0;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  
  .contact-card {
    padding: 22px 18px;
    border-radius: 14px;
  }

  .contact-card h3 {
    font-size: 1.05rem;
  }

  .contact-card p {
    font-size: 0.9rem;
  }
  
  .contact-icon {
    width: 52px;
    height: 52px;
    font-size: 22px;
    border-radius: 14px;
    margin-bottom: 14px;
  }
  
  .contact-map {
    border-radius: 12px;
    margin-top: 30px;
  }

  .contact-map iframe {
    height: 260px;
  }
  
  .contact-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 30px;
  }
  
  .contact-actions .btn-primary {
    width: 100%;
    max-width: 100%;
    justify-content: center;
  }
  
  /* ===== MODAL MOBILE ===== */
  .modal-content {
    padding: 28px 20px;
    margin: 0 15px;
    width: calc(100% - 30px);
    border-radius: 16px;
  }
  
  /* ===== BUTTONS MOBILE ===== */
  .btn-secondary {
    padding: 12px 24px;
    font-size: 0.92rem;
  }
  
  .btn {
    padding: 12px 22px;
    font-size: 0.92rem;
  }

  /* General sections */
  .section {
    padding: 40px 0;
  }

  .section h1 {
    font-size: 1.4rem;
  }

  .section h2 {
    font-size: 1.3rem;
  }

  .muted {
    font-size: 0.88rem;
    padding: 0 5px;
  }

  main {
    padding: 30px 0;
  }
}

/* Mobile Small - 320px to 480px */
@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .container {
    padding: 0 12px;
  }

  .header-content {
    gap: 8px;
  }

  .logo-image {
    height: 38px;
  }

  nav a {
    padding: 7px 8px;
    font-size: 0.75rem;
  }

  .btn-login {
    padding: 7px 14px;
    font-size: 0.78rem;
  }
  
  .hero-title {
    font-size: 1.4rem;
    letter-spacing: -0.3px;
  }
  
  .hero-subtitle {
    font-size: 0.85rem;
  }
  
  .tracking-box {
    padding: 14px 10px;
    border-radius: 12px;
  }
  
  .tab-btn {
    padding: 8px 10px;
    font-size: 0.78rem;
  }
  
  .section-title {
    font-size: 1.25rem;
    margin-bottom: 20px;
  }
  
  .service-card {
    padding: 20px 16px;
  }

  .service-card h3 {
    font-size: 1rem;
  }

  .service-icon img {
    width: 55px;
    height: 55px;
    max-width: 55px;
  }

  .mv-card,
  .commitment-card {
    padding: 22px 16px;
  }

  .mv-icon,
  .commitment-icon {
    width: 80px;
    height: 80px;
  }

  .strength-number {
    font-size: 30px;
  }
  
  .stat-number {
    font-size: 1.7rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }
  
  table.card th,
  table.card td {
    padding: 9px 7px;
    font-size: 0.78rem;
  }

  .contact-card {
    padding: 18px 14px;
  }

  .why-content h2,
  .why-partner-content h2 {
    font-size: 1.25rem;
  }

  .about-intro-content h2 {
    font-size: 1.25rem;
  }

  .card {
    padding: 16px 14px;
  }

  .card h2 {
    font-size: 1.1rem;
  }

  .section h1 {
    font-size: 1.25rem;
  }

  .muted {
    font-size: 0.82rem;
  }

  /* Prevent text overflow */
  h1, h2, h3, h4, h5, h6 {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  /* Prevent iOS zoom on inputs */
  .tracking-input,
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="number"],
  input[type="password"],
  select,
  textarea {
    font-size: 16px;
  }
}

/* Very Small Mobile - below 360px */
@media (max-width: 360px) {
  .container {
    padding: 0 10px;
  }

  .logo-image {
    height: 34px;
  }

  nav a {
    padding: 6px 6px;
    font-size: 0.72rem;
  }

  .hero-title {
    font-size: 1.25rem;
  }

  .hero-subtitle {
    font-size: 0.8rem;
  }

  .tracking-box {
    padding: 12px 8px;
  }

  .tab-btn {
    padding: 7px 8px;
    font-size: 0.72rem;
  }

  .section-title {
    font-size: 1.15rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stats-grid {
    gap: 10px;
  }
}

/* Landscape Mobile Optimization */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: 320px;
  }
  
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-content {
    padding: 20px 10px;
  }
  
  .tracking-box {
    padding: 14px;
  }
  
  .tracking-tabs {
    flex-direction: row;
  }
  
  .tab-btn {
    flex: 1;
    min-width: auto;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Touch target optimization */
@media (max-width: 768px) {
  a, button, .btn, .tab-btn, .social-btn {
    min-height: 44px;
  }
  
  nav a {
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .btn-login {
    min-height: 40px;
  }
}

/* ===== FIREBASE AUTHENTICATION STYLES ===== */

/* Nút đăng nhập header - đã được định nghĩa ở trên */

/* User dropdown khi đã đăng nhập */
.user-dropdown {
  position: relative;
}

.btn-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-user:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(13, 59, 26, 0.4);
}

.btn-user i.fa-user-circle {
  font-size: 1.2rem;
}

.btn-user i.fa-chevron-down {
  font-size: 0.7rem;
  transition: transform 0.3s;
}

.user-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: white;
  border-radius: 14px;
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.12);
  min-width: 210px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.user-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: #333;
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.9rem;
}

.user-menu a:hover {
  background: rgba(13, 59, 26, 0.06);
  color: var(--primary-color);
}

.user-menu a i {
  width: 20px;
  text-align: center;
  color: var(--primary-color);
}

/* Firebase notification */
.firebase-notification {
  position: fixed;
  top: 80px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 10px;
  background: white;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10000;
  animation: notificationSlideIn 0.3s ease;
  max-width: 350px;
}

.firebase-notification.success {
  border-left: 4px solid #28a745;
}

.firebase-notification.success i:first-child {
  color: #28a745;
}

.firebase-notification.error {
  border-left: 4px solid #dc3545;
}

.firebase-notification.error i:first-child {
  color: #dc3545;
}

.firebase-notification.info {
  border-left: 4px solid #17a2b8;
}

.firebase-notification.info i:first-child {
  color: #17a2b8;
}

.firebase-notification span {
  flex: 1;
  font-size: 0.9rem;
  color: #333;
}

.firebase-notification button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  color: #999;
  transition: color 0.3s;
}

.firebase-notification button:hover {
  color: #333;
}

@keyframes notificationSlideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Responsive cho auth */
@media (max-width: 768px) {
  .btn-user {
    padding: 7px 14px;
    font-size: 0.82rem;
  }
  
  .btn-user span {
    display: none;
  }

  .btn-user i.fa-user-circle {
    font-size: 1.1rem;
  }
  
  .user-menu {
    right: -5px;
    min-width: 180px;
    border-radius: 12px;
  }

  .user-menu a {
    padding: 11px 16px;
    font-size: 0.85rem;
  }
  
  .firebase-notification {
    top: 70px;
    left: 12px;
    right: 12px;
    max-width: none;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.88rem;
  }
}

@media (max-width: 480px) {
  .btn-user {
    padding: 6px 12px;
  }

  .user-menu {
    right: -8px;
    min-width: 160px;
  }

  .firebase-notification {
    top: 60px;
    left: 8px;
    right: 8px;
  }
}

/* ===== PWA STYLES ===== */

/* Subtle Install Prompt - Floating Action Button Style */
.pwa-install-prompt-subtle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--primary-color);
  color: white;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 280px;
  font-size: 14px;
}

.pwa-install-prompt-subtle.show {
  transform: translateY(0);
  opacity: 1;
}

.install-content {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  gap: 8px;
}

.install-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.install-text {
  flex: 1;
  min-width: 0;
}

.install-text small {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.install-btn-subtle {
  background: white;
  color: var(--primary-color);
  border: none;
  padding: 6px 12px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.install-btn-subtle:hover {
  transform: scale(1.05);
}

.close-btn-subtle {
  position: absolute;
  top: -8px;
  right: -8px;
  background: rgba(0, 0, 0, 0.3);
  color: white;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.close-btn-subtle:hover {
  background: rgba(0, 0, 0, 0.5);
}

/* PWA Offline Indicator */
.offline-indicator {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: #ff6b6b;
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  z-index: 1000;
  display: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  font-weight: 500;
}

.offline-indicator.show {
  display: block;
}

.offline-indicator i {
  margin-right: 6px;
}