/* Reset cơ bản */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  color: #222;
  background-color: #f7f8f9;
}

/* Container chung */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* Header */
.main-header {
  background: #005e3a;
  color: #fff;
  padding: 10px 0;
  border-bottom: 4px solid #00a859;
}

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

.logo-block {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 2rem;
}

.company-name {
  font-weight: 700;
  font-size: 1.2rem;
}

.company-tagline {
  font-size: 0.9rem;
  color: #cce6dd;
}

/* Navigation */
.main-nav a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
  font-weight: 500;
}

.main-nav a:hover {
  text-decoration: underline;
}

/* Hotline button */
.hotline-btn {
  background: #ffcc00;
  color: #000;
  padding: 8px 15px;
  border-radius: 6px;
  text-align: center;
  font-weight: bold;
}

.hotline-btn:hover {
  background: #ffd633;
}

/* Hero section */
.hero {
  background: linear-gradient(to right, #e9fff4, #ffffff);
  padding: 40px 0;
  text-align: center;
}

.hero-title {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: #004d2b;
}

.hero-title .highlight {
  color: #007b46;
  font-weight: 600;
}

.hero-benefits div {
  margin-top: 5px;
  color: #004d2b;
}

.hero-call {
  display: inline-block;
  margin-top: 15px;
  font-size: 1.4rem;
  color: #fff;
  background: #00a859;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
}

.hero-call:hover {
  background: #00994d;
}

.hero-zalo {
  margin-top: 8px;
  font-size: 1rem;
  color: #006b3b;
}

/* Section titles */
.section-title {
  text-align: center;
  font-size: 1.6rem;
  color: #005e3a;
  margin: 40px 0 20px;
  position: relative;
}

.section-title::after {
  content: "";
  width: 80px;
  height: 3px;
  background: #00a859;
  display: block;
  margin: 10px auto 0;
  border-radius: 5px;
}

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.service-card {
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.2s;
}

.service-card:hover {
  transform: translateY(-4px);
}

.service-card h3 {
  color: #007b46;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

/* Pricing */
.pricing-section {
  background: #fff;
  padding: 40px 0;
}

.pricing-note {
  text-align: center;
  color: #555;
  margin-bottom: 10px;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.pricing-table th,
.pricing-table td {
  border: 1px solid #ddd;
  padding: 12px;
  text-align: left;
}

.pricing-table th {
  background: #e9f8ef;
}

.pricing-table td {
  background: #fff;
}

.pricing-cta {
  text-align: center;
  margin-top: 20px;
}

.pricing-hotline {
  display: inline-block;
  background: #ffcc00;
  color: #000;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
}

.pricing-hotline:hover {
  background: #ffe066;
}

/* FAQ */
.faq-item {
  background: #fff;
  padding: 15px;
  margin: 10px 0;
  border-left: 4px solid #00a859;
  border-radius: 6px;
}

.faq-item h3 {
  color: #007b46;
  font-size: 1.1rem;
}

/* Footer */
.site-footer {
  background: #004d2b;
  color: #fff;
  padding: 40px 0 20px;
}

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

.footer-heading {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.footer-subheading {
  font-size: 1rem;
  margin-bottom: 8px;
  color: #ffd633;
}

.footer-list li {
  margin-bottom: 5px;
}

.footer-callback-form {
  display: flex;
  gap: 8px;
}

.footer-callback-form input {
  flex: 1;
  padding: 8px;
  border-radius: 4px;
  border: none;
}

.footer-callback-btn {
  background: #ffcc00;
  border: none;
  padding: 8px 15px;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
}

.footer-bottom {
  text-align: center;
  font-size: 0.9rem;
  margin-top: 20px;
  color: #cce6dd;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
  }

  .main-nav {
    margin-top: 10px;
  }

  .hero-title {
    font-size: 1.4rem;
  }
}
/* ----- HEADER / NAV RESPONSIVE NÂNG CAO ----- */

/* Bố cục header */
.header-inner {
  position: relative;
}

/* Nút gọi hotline trong header */
.header-hotline {
  order: 3;
}

/* Nút menu mobile (ẩn trên desktop) */
.mobile-menu-toggle {
  background: #00a859;
  color: #fff;
  border: none;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  display: none; /* mặc định ẩn trên desktop */
}

/* NAV chung */
.main-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-weight: 500;
}

/* Link trong nav */
.main-nav > a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

.main-nav > a:hover {
  text-decoration: underline;
}

/* Dropdown khu vực */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: #fff;
  font-weight: 500;
  font-size: 1rem;
  padding: 0;
  line-height: 1.4;
  text-align: left;
}

.nav-dropdown-btn:hover {
  text-decoration: underline;
}

.nav-dropdown-content {
  position: absolute;
  right: 0;
  top: 100%;
  background-color: #fff;
  min-width: 200px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  border-radius: 6px;
  overflow: hidden;
  display: none; /* mặc định đóng */
  z-index: 999;
}

.nav-dropdown-content a {
  color: #004d2b;
  padding: 10px 15px;
  display: block;
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-dropdown-content a:hover {
  background-color: #f1f1f1;
}

/* ----- Desktop hover behavior ----- */
@media (min-width: 769px) {
  /* trên desktop, khi hover vào .nav-dropdown thì xổ */
  .nav-dropdown:hover .nav-dropdown-content {
    display: block;
  }

  /* nav luôn hiển thị dạng ngang */
  .main-nav {
    position: static;
    background: transparent;
    flex-direction: row;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .header-hotline {
    order: 0;
  }
}

/* ----- Mobile layout ----- */
@media (max-width: 768px) {

  /* header stack theo cột */
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  /* hotline nổi bật gần nút menu */
  .header-hotline {
    align-self: flex-end;
  }

  /* hiện nút menu mobile */
  .mobile-menu-toggle {
    display: block;
    align-self: flex-end;
  }

  /* nav sẽ ẩn mặc định, mở ra bằng JS */
  .main-nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    background: #004d2b;
    border: 2px solid #00a859;
    border-radius: 10px;
    padding: 15px;
    width: 100%;
    max-width: 320px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.4);
  }

  /* class .main-nav.open sẽ bật nav */
  .main-nav.open {
    display: flex;
  }

  .main-nav > a {
    color: #fff;
    font-size: 1rem;
    padding: 8px 0;
    width: 100%;
  }

  .nav-dropdown {
    width: 100%;
  }

  .nav-dropdown-btn {
    width: 100%;
    text-align: left;
    background: #006b3b;
    border-radius: 6px;
    padding: 10px 12px;
    color: #fff;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  /* Trong mobile, dropdown list sẽ là block riêng bên dưới */
  .nav-dropdown-content {
    position: static;
    box-shadow: none;
    background: #fff;
    border-radius: 6px;
    width: 100%;
    margin-top: 8px;
  }

  .nav-dropdown-content a {
    color: #004d2b;
    border-bottom: 1px solid #eee;
  }

  .nav-dropdown-content a:last-child {
    border-bottom: none;
  }

  /* Ẩn dropdown list mặc định, sẽ bật bằng JS */
  .nav-dropdown-content {
    display: none;
  }

  /* class .show sẽ bật nó */
  .nav-dropdown-content.show {
    display: block;
  }
}

/* ----- Nút gọi nổi cố định ở góc màn hình mobile ----- */
.call-floating-btn {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: #ffcc00;
  color: #000;
  font-weight: bold;
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 999px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
  font-size: 1rem;
  line-height: 1.2;
  z-index: 1000;
  display: none; /* default ẩn trên desktop */
}

@media (max-width: 768px) {
  .call-floating-btn {
    display: block;
  }
}

/* ========== STYLE PHẦN ẢNH GIỚI THIỆU ========== */
.intro-gallery {
    max-width: 1300px;
    margin: 0 auto;
    padding: 30px 16px 60px;
}

.intro-gallery-title {
    text-align: center;
    color: #1b7a0d;
    font-size: 20px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 30px;
    letter-spacing: 0.5px;
}

.intro-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 cột desktop */
    gap: 20px;
    justify-items: center;
}

.intro-item {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 6px;
    overflow: hidden;
    background-color: #fff;
    border: 1px solid #ddd;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.intro-item:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Tablet */
@media (max-width: 992px) {
    .intro-gallery-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 cột */
    }
}

/* Mobile */
@media (max-width: 576px) {
    .intro-gallery-grid {
        grid-template-columns: 1fr; /* 1 cột */
    }

    .intro-gallery-title {
        font-size: 18px;
    }
}
/* ========== HẾT PHẦN ẢNH GIỚI THIỆU ========== */
.cta-section {
    background-color: #f4f4f4;
    padding: 40px;
    text-align: center;
}

.cta-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.cta-box {
    width: 23%;
    background-color: white;
    padding: 20px;
    margin: 10px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.check-icon {
    color: #4caf50;
    font-size: 2rem;
    margin-bottom: 10px;
}

.cta-box p {
    font-size: 16px;
    color: #555;
}

.cta-buttons {
    margin-top: 20px;
}

.cta-btn {
    padding: 15px 30px;
    margin: 10px;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    color: white;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.cta-call {
    background-color: #4caf50;
}

.cta-price {
    background-color: #007bff;
}

.cta-btn:hover {
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .cta-box {
        width: 45%;
    }
}

@media (max-width: 480px) {
    .cta-box {
        width: 100%;
    }
    .cta-btn {
        width: 100%;
        padding: 15px;
        font-size: 16px;
    }
}