/* =========================================================
   SMART FOCUS — Main Stylesheet
   ========================================================= */

:root {
  --navy: #0D1B3E;
  --dark-blue: #1A3A6B;
  --accent: #00C9A7;
  --accent-dark: #00A88A;
  --light-bg: #F0FAFA;
  --white: #FFFFFF;
  --gray: #8899AA;
  --dark-gray: #2C3E50;
  --border: #e8eef3;
  --max-width: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--dark-gray);
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', -apple-system, sans-serif;
  color: var(--navy);
  line-height: 1.25;
}

a { color: var(--accent-dark); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

.section { padding: 72px 0; }
.section-alt { background: var(--light-bg); }
.section-dark { background: var(--navy); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .eyebrow {
  display: inline-block;
  color: var(--accent-dark);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title { font-size: 32px; font-weight: 800; color: var(--navy); margin-bottom: 14px; }
.section-dark .section-title { color: #fff; }
.section-subtitle { color: var(--gray); font-size: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  padding: 14px 30px;
  border-radius: 8px;
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,201,167,.3); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--dark-blue); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.35); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--navy); border: 2px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn-sm { padding: 9px 18px; font-size: 13px; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 12px rgba(0,0,0,.15);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}
.site-logo { font-family: 'Montserrat', sans-serif; color: #fff; font-size: 22px; font-weight: 800; letter-spacing: 1px; white-space: nowrap; }
.site-logo span { color: var(--accent); }
.site-logo img { max-height: 42px; width: auto; }

.main-nav ul { list-style: none; display: flex; gap: 26px; align-items: center; margin: 0; }
.main-nav a { color: #cfd8e3; font-family: 'Montserrat', sans-serif; font-size: 14.5px; font-weight: 500; }
.main-nav a:hover, .main-nav .current-menu-item > a { color: var(--accent); }
.main-nav .sub-menu {
  position: absolute;
  background: #fff;
  min-width: 220px;
  box-shadow: 0 12px 30px rgba(0,0,0,.15);
  border-radius: 10px;
  padding: 8px 0;
  display: none;
  flex-direction: column;
  gap: 0;
  z-index: 210;
}
.main-nav li { position: relative; }
.main-nav li:hover > .sub-menu { display: flex; }
.main-nav .sub-menu a { color: var(--dark-gray); padding: 9px 18px; display: block; }
.main-nav .sub-menu a:hover { background: var(--light-bg); color: var(--accent-dark); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--dark-blue) 100%);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -15%;
  width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(0,201,167,.18) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(26,58,107,.5) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-inner { position: relative; z-index: 2; max-width: 780px; margin: 0 auto; text-align: center; }
.hero h1 { color: #fff; font-size: 46px; font-weight: 800; margin-bottom: 18px; }
.hero h1 span { color: var(--accent); }
.hero p { color: #a9bdd4; font-size: 19px; margin-bottom: 34px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-badges { margin-top: 40px; display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; }
.hero-badge { color: #cfd8e3; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.hero-badge i { color: var(--accent); }

/* =========================================================
   FEATURES / WHY US
   ========================================================= */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { text-align: center; padding: 36px 22px; border-radius: 14px; background: var(--light-bg); transition: all .3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 12px 30px rgba(0,201,167,.15); }
.feature-icon {
  width: 62px; height: 62px; background: var(--navy); border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px; font-size: 24px; color: var(--accent);
}
.feature-card h3 { font-size: 17px; color: var(--navy); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--gray); }

/* =========================================================
   PRODUCTS
   ========================================================= */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card {
  background: #fff; border-radius: 14px; padding: 22px; text-align: center;
  border: 1px solid var(--border); transition: all .3s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 12px 26px rgba(0,0,0,.09); }
.product-img {
  width: 100%; height: 150px; border-radius: 10px; margin-bottom: 16px;
  background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
  display: flex; align-items: center; justify-content: center; font-size: 46px;
  overflow: hidden;
}
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-cat { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--gray); font-weight: 600; }
.product-card h4 { font-size: 15px; color: var(--navy); margin: 6px 0 8px; min-height: 42px; }
.product-price { color: var(--accent-dark); font-weight: 800; font-size: 17px; font-family: 'Montserrat', sans-serif; margin-bottom: 14px; }

/* =========================================================
   SOLUTIONS
   ========================================================= */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.solution-card {
  border-radius: 18px; padding: 38px 28px; position: relative; overflow: hidden;
  transition: all .3s; color: #fff; min-height: 260px; display: flex; flex-direction: column;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(13,27,62,.25); }
.solution-card.home { background: linear-gradient(135deg, #0D1B3E, #1A3A6B); }
.solution-card.hotel { background: linear-gradient(135deg, #1A3A6B, #2D5A8E); }
.solution-card.villa { background: linear-gradient(135deg, #00A88A, #00C9A7); }
.solution-card .sol-icon { font-size: 34px; margin-bottom: 16px; }
.solution-card h3 { color: #fff; font-size: 22px; margin-bottom: 10px; }
.solution-card p { color: rgba(255,255,255,.85); font-size: 15px; margin-bottom: 20px; flex-grow: 1; }
.solution-tag { display: inline-block; background: rgba(255,255,255,.2); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; align-self: flex-start; margin-bottom: 16px; }
.solution-card .sol-link { color: #fff; font-weight: 600; font-family: 'Montserrat', sans-serif; font-size: 14px; }
.solution-card .sol-link i { transition: transform .2s; }
.solution-card:hover .sol-link i { transform: translateX(5px); }

/* =========================================================
   STATS
   ========================================================= */
.stats-grid { display: flex; justify-content: center; gap: 70px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-number { font-family: 'Montserrat', sans-serif; font-size: 44px; font-weight: 800; color: var(--accent); }
.stat-label { color: #a9bdd4; font-size: 15px; margin-top: 6px; }

/* =========================================================
   STEPS / PROCESS
   ========================================================= */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.step-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 30px 24px; position: relative; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #fff;
  font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 18px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.step-card h4 { color: var(--navy); font-size: 17px; margin-bottom: 8px; }
.step-card p { color: var(--gray); font-size: 14px; }

/* =========================================================
   TESTIMONIALS
   ========================================================= */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testimonial-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 30px 26px; }
.testimonial-card .stars { color: #f5b041; margin-bottom: 14px; }
.testimonial-card p { font-size: 15px; font-style: italic; color: var(--dark-gray); margin-bottom: 18px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 46px; height: 46px; border-radius: 50%; background: var(--navy); color: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 700; font-family: 'Montserrat', sans-serif; }
.testimonial-author strong { display: block; color: var(--navy); font-size: 14px; }
.testimonial-author small { color: var(--gray); font-size: 12px; }

/* =========================================================
   PARTNERS / LOGOS
   ========================================================= */
.logo-row { display: flex; justify-content: center; align-items: center; gap: 50px; flex-wrap: wrap; opacity: .85; }
.logo-row span { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 20px; color: var(--gray); }

/* =========================================================
   CTA BAND
   ========================================================= */
.cta-band { background: var(--light-bg); text-align: center; }
.cta-band h2 { font-size: 30px; color: var(--navy); margin-bottom: 12px; }
.cta-band p { color: var(--gray); margin-bottom: 28px; font-size: 17px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   PAGE HEADER (inner pages)
   ========================================================= */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--dark-blue) 100%);
  padding: 70px 0; text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; top: -50%; right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,201,167,.15) 0%, transparent 70%); border-radius: 50%;
}
.page-hero-inner { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: 40px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { color: #a9bdd4; font-size: 18px; max-width: 640px; margin: 0 auto; }
.breadcrumb { color: #7f92a8; font-size: 13px; margin-top: 14px; }
.breadcrumb a { color: var(--accent); }

/* =========================================================
   CONTENT / GENERIC PAGE
   ========================================================= */
.page-content { padding: 60px 0; }
.page-content .container { max-width: 860px; }
.entry-content h2 { font-size: 26px; margin: 34px 0 14px; color: var(--navy); }
.entry-content h3 { font-size: 20px; margin: 26px 0 10px; color: var(--dark-blue); }
.entry-content p { margin-bottom: 16px; }
.entry-content ul, .entry-content ol { margin: 0 0 18px 22px; }
.entry-content li { margin-bottom: 8px; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.entry-content th, .entry-content td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; font-size: 14px; }
.entry-content th { background: var(--navy); color: #fff; font-family: 'Montserrat', sans-serif; }
.entry-content tr:nth-child(even) td { background: var(--light-bg); }

/* ---------- Pricing table cards ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 24px; margin-top: 20px; }
.price-card { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 32px 26px; text-align: center; transition: all .3s; }
.price-card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(0,0,0,.1); border-color: var(--accent); }
.price-card.featured { border: 2px solid var(--accent); position: relative; }
.price-card.featured::before { content: 'Phổ biến'; position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 16px; border-radius: 20px; font-family: 'Montserrat', sans-serif; }
.price-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 8px; }
.price-card .price { font-family: 'Montserrat', sans-serif; font-size: 28px; font-weight: 800; color: var(--accent-dark); margin: 12px 0; }
.price-card .price small { font-size: 14px; color: var(--gray); font-weight: 500; }
.price-card ul { list-style: none; margin: 18px 0; text-align: left; }
.price-card li { padding: 7px 0; font-size: 14px; border-bottom: 1px dashed var(--border); }
.price-card li i { color: var(--accent); margin-right: 8px; }

/* ---------- Feature list (checkmark) ---------- */
.check-list { list-style: none; margin: 0; }
.check-list li { padding: 10px 0 10px 34px; position: relative; font-size: 15px; }
.check-list li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--accent); position: absolute; left: 0; top: 10px; }

/* ---------- Two column ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.two-col .col-visual { background: linear-gradient(135deg, var(--navy), var(--dark-blue)); border-radius: 18px; min-height: 320px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 90px; }

/* =========================================================
   CATEGORY GRID (products page)
   ========================================================= */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cat-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 30px 22px; text-align: center; transition: all .3s; }
.cat-card:hover { transform: translateY(-6px); box-shadow: 0 12px 28px rgba(0,0,0,.09); border-color: var(--accent); }
.cat-icon { width: 66px; height: 66px; margin: 0 auto 16px; border-radius: 16px; background: var(--light-bg); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; font-size: 26px; }
.cat-card h4 { color: var(--navy); font-size: 16px; margin-bottom: 8px; }
.cat-card p { color: var(--gray); font-size: 13px; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.contact-info-card { background: var(--navy); color: #fff; border-radius: 16px; padding: 38px 32px; }
.contact-info-card h3 { color: #fff; margin-bottom: 22px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-info-item i { color: var(--accent); font-size: 18px; margin-top: 4px; width: 22px; text-align: center; }
.contact-info-item strong { display: block; font-size: 14px; }
.contact-info-item span { color: #a9bdd4; font-size: 14px; }
.contact-form { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 38px 32px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; font-family: 'Montserrat', sans-serif; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-family: inherit; font-size: 15px; color: var(--dark-gray); background: #fff;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: none; border-color: var(--accent); }
.form-note { font-size: 13px; color: var(--gray); margin-top: 8px; }
.form-message { padding: 14px; border-radius: 8px; margin-bottom: 18px; font-size: 14px; display: none; }
.form-message.success { background: #e6f9f4; color: #067a5f; display: block; }
.form-message.error { background: #fdecec; color: #b3261e; display: block; }

/* =========================================================
   FAQ
   ========================================================= */
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 14px; overflow: hidden; background: #fff; }
.faq-q { padding: 18px 22px; font-family: 'Montserrat', sans-serif; font-weight: 600; color: var(--navy); cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-size: 15px; }
.faq-q i { color: var(--accent); transition: transform .3s; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { padding: 0 22px; max-height: 0; overflow: hidden; transition: all .3s; color: var(--dark-gray); font-size: 14.5px; }
.faq-item.open .faq-a { padding: 0 22px 20px; max-height: 400px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--navy); color: #a9bdd4; padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-section h4 { color: var(--accent); font-size: 14px; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer-section p, .footer-section a { color: #a9bdd4; font-size: 14px; display: block; margin-bottom: 9px; }
.footer-section a:hover { color: var(--accent); }
.footer-brand { font-family: 'Montserrat', sans-serif; color: #fff; font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.footer-brand span { color: var(--accent); }
.footer-contact-item i { color: var(--accent); width: 20px; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; color: #fff; margin: 0; }
.footer-social a:hover { background: var(--accent); }
.footer-bottom { background: #091428; text-align: center; padding: 18px; color: #667788; font-size: 13px; margin-top: 48px; }

/* =========================================================
   FLOATING BUTTONS
   ========================================================= */
.floating-stack { position: fixed; bottom: 24px; right: 24px; z-index: 150; display: flex; flex-direction: column; gap: 12px; }
.floating-btn { width: 54px; height: 54px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 22px; box-shadow: 0 6px 18px rgba(0,0,0,.25); transition: transform .2s; }
.floating-btn:hover { transform: scale(1.1); color: #fff; }
.floating-btn.zalo { background: #0068ff; }
.floating-btn.phone { background: var(--accent); }
.floating-btn.messenger { background: #0084ff; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 992px) {
  .features-grid, .products-grid, .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid, .steps-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .two-col, .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .section-title { font-size: 27px; }
}

@media (max-width: 680px) {
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--navy); flex-direction: column; padding: 10px 0;
    display: none; box-shadow: 0 10px 20px rgba(0,0,0,.25);
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; align-items: stretch; }
  .main-nav li { padding: 4px 24px; }
  .main-nav .sub-menu { position: static; box-shadow: none; background: rgba(255,255,255,.06); }
  .main-nav .sub-menu a { color: #cfd8e3; }
  .nav-toggle { display: block; }
  .header-actions .btn { display: none; }
  .features-grid, .products-grid, .cat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { gap: 36px; }
  .hero { padding: 64px 0; }
  .hero h1 { font-size: 30px; }
  .section { padding: 52px 0; }
}