/* ==========================================================================
   AGRICULTURE HITECH-USA — style.css
   ========================================================================== */

:root {
  --green-900: #14532d;
  --green-700: #1e8449;
  --green-600: #218c4a;
  --green-500: #2fa864;
  --green-100: #eafaf0;
  --green-50: #f4fbf6;
  --red-600: #dc2626;
  --red-700: #b91c1c;
  --ink-900: #16241c;
  --ink-700: #3f4a44;
  --ink-500: #6b7670;
  --line: #e4ece6;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(20, 83, 45, 0.08);
  --shadow-sm: 0 4px 14px rgba(20, 83, 45, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1180px;
}

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

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--ink-900); }
h1 { font-size: 38px; font-weight: 800; }
h2 { font-size: 28px; }
h3 { font-size: 19px; }
p { color: var(--ink-700); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--green-700); color: var(--white); box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--green-900); transform: translateY(-2px); }
.btn--outline { border-color: var(--green-700); color: var(--green-700); background: transparent; }
.btn--outline:hover { background: var(--green-700); color: var(--white); }
.btn--white { background: var(--white); color: var(--green-700); }
.btn--white:hover { transform: translateY(-2px); }
.btn--block { width: 100%; }

.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--green-100);
  color: var(--green-700);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .3px;
  margin-bottom: 14px;
}
.badge--light { background: rgba(255,255,255,.18); color: var(--white); }

/* ---------- Top bar ---------- */
.topbar { background: var(--green-900); color: rgba(255,255,255,.9); font-size: 13px; }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; padding: 8px 24px; flex-wrap: wrap; gap: 6px; }
.topbar__contact { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar__contact a, .topbar__contact span { display: inline-flex; align-items: center; gap: 6px; color: rgba(255,255,255,.9); }
.topbar__slogan { font-style: italic; color: var(--green-100); opacity: .85; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; gap: 24px; padding: 12px 24px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { color: var(--green-700); font-size: 16px; letter-spacing: .5px; }
.brand__text span { color: var(--red-600); font-size: 11px; font-weight: 700; letter-spacing: 1px; }

.nav { display: flex; gap: 28px; }
.nav a { font-weight: 500; font-size: 15px; color: var(--ink-700); transition: color .2s; position: relative; }
.nav a:hover { color: var(--green-700); }
.nav a.is-active { color: var(--green-700); }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--green-700); border-radius: 2px;
}

.header__cta { flex-shrink: 0; }
.nav__toggle { display: none; background: none; border: none; font-size: 26px; color: var(--green-700); cursor: pointer; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(180deg, var(--green-50) 0%, var(--white) 100%); overflow: hidden; }
.hero__inner {
  display: grid; grid-template-columns: 1.2fr .8fr;
  align-items: center; gap: 28px;
  padding: 30px 24px 26px;
}
.hero__content p { margin: 10px 0 16px; font-size: 15px; max-width: 500px; }
.hero__content .badge { margin-bottom: 8px; }
.hero__content h1 { color: var(--ink-900); }
.hero__content .badge { background: var(--green-100); }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero__blob {
  position: absolute; width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--green-500), var(--green-700));
  opacity: .12; filter: blur(10px);
}
.hero__illustration { width: 100%; max-width: 190px; position: relative; }

.trust-strip { background: var(--green-700); }
.trust-strip__inner {
  display: flex; justify-content: space-between; flex-wrap: wrap;
  gap: 14px; padding: 14px 24px; color: var(--white);
}
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 500; flex: 1 1 200px; }
.trust-item i { font-size: 22px; color: var(--green-100); }

/* ---------- Sections ---------- */
.section { padding: 60px 0; }
.section--muted {
  background-color: var(--green-50);
  background-image: radial-gradient(var(--green-100) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
}
.section__head { max-width: 640px; margin: 0 auto 32px; text-align: center; }
.section__head p { margin-top: 8px; font-size: 15.5px; }
.section__more { text-align: center; margin-top: 28px; }
.hidden-field { display: none; }

/* ---------- Grid & Cards ---------- */
.grid { display: grid; gap: 18px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }

.card--service .card__icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--green-100); color: var(--green-700);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 12px;
}
.card--service h3 { margin-bottom: 6px; font-size: 17px; }
.card--service p { font-size: 14px; margin-bottom: 12px; }
.card__link { color: var(--green-700); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 4px; }
.card__link i { transition: transform .2s; }
.card__link:hover i { transform: translateX(3px); }

.card--product { padding: 0; overflow: hidden; text-align: left; }
.card__media--product {
  height: 140px; background: linear-gradient(135deg, var(--green-600), var(--green-900));
  color: var(--white); font-size: 40px; position: relative;
}
.card__media--product img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__media--product-fallback { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.card--product .card__body { padding: 16px 18px; }
.card--product h3 { font-size: 16px; margin: 8px 0 6px; }
.card--product p { font-size: 13px; margin-bottom: 6px; }
.card--product .card__dosage,
.card--product .card__note {
  font-size: 12px; color: var(--ink-500); display: flex; align-items: flex-start; gap: 5px; margin-bottom: 6px;
}
.card--product .card__note { font-style: italic; }
.tag {
  display: inline-block; background: var(--green-100); color: var(--green-700);
  font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: .4px;
}
.price { margin-top: 12px; font-weight: 800; color: var(--red-600); font-size: 18px; }

.card--news { padding: 0; overflow: hidden; }
.card__media--news {
  height: 150px; background: linear-gradient(135deg, var(--green-600), var(--green-900));
  display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 42px;
}
.card--news .card__media--news { height: 120px; }
.card--news .card__body { padding: 18px 20px; }
.card--news h3 { margin: 6px 0 6px; font-size: 16px; }
.card--news p { font-size: 13.5px; margin-bottom: 10px; }

/* ---------- Video (tin-tuc.html) ---------- */
.card--video { padding: 0; overflow: hidden; }
.video-thumb {
  position: relative; aspect-ratio: 16 / 9; background: var(--ink-900);
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.video-thumb iframe { width: 100%; height: 100%; border: 0; display: block; }
.video-thumb__placeholder {
  position: absolute; inset: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, var(--green-600), var(--green-900));
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 48px;
}
.video-thumb__badge {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(20,37,28,.6); color: var(--white);
  display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.video-thumb .play-btn {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1;
  display: flex; align-items: center; justify-content: center;
  background: rgba(20,37,28,.25); border: 0; padding: 0; cursor: pointer;
  color: var(--white); transition: background .2s ease;
}
.video-thumb .play-btn:hover { background: rgba(20,37,28,.4); }
.video-thumb .play-btn i { font-size: 56px; filter: drop-shadow(0 2px 6px rgba(0,0,0,.4)); }
.card--video .card__body { padding: 14px 16px; }
.card--video h3 { font-size: 16px; margin: 0 0 4px; }
.card--video p { font-size: 13px; color: var(--ink-500); margin: 0; }

/* ---------- Article detail (bai-viet.html) ---------- */
.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--green-700); font-weight: 600; font-size: 14px; margin-bottom: 24px; }
.back-link:hover { text-decoration: underline; }

.article-detail { max-width: 760px; margin: 0 auto; }
.article-detail__head { text-align: center; margin-bottom: 24px; }
.article-detail__head h1 { margin: 12px 0 10px; }
.article-detail__meta { color: var(--ink-500); font-size: 14px; display: flex; align-items: center; justify-content: center; gap: 6px; }

.article-detail__media {
  height: 220px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--green-600), var(--green-900));
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 64px; margin-bottom: 32px;
}

.article-content p { margin-bottom: 16px; font-size: 16px; line-height: 1.8; color: var(--ink-700); }
.article-content p:last-child { margin-bottom: 0; }

.article-not-found { text-align: center; padding: 40px 0; }
.article-not-found h1 { margin-bottom: 10px; }
.article-not-found p { margin-bottom: 22px; }

/* ---------- Pricing table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--line); }
.price-table { width: 100%; border-collapse: collapse; background: var(--white); min-width: 560px; }
.price-table thead { background: var(--green-700); color: var(--white); }
.price-table th { text-align: left; padding: 10px 18px; font-size: 13px; font-weight: 600; }
.price-table td { padding: 8px 18px; border-bottom: 1px solid var(--line); font-size: 13.5px; color: var(--ink-700); }
.price-table tr:last-child td { border-bottom: none; }
.price-table tbody tr:hover { background: var(--green-50); }
.price-table td:first-child { font-weight: 600; color: var(--ink-900); }
.price-table td:last-child { font-weight: 700; color: var(--red-600); }

/* ---------- CTA banner ---------- */
.cta-banner { background: linear-gradient(120deg, var(--green-700), var(--green-900)); margin: 0; }
.cta-banner__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap; padding: 32px 24px; color: var(--white);
}
.cta-banner__inner h2 { color: var(--white); font-size: 26px; }
.cta-banner__inner p { color: rgba(255,255,255,.85); margin-top: 6px; }

/* ---------- AI section ---------- */
.ai__inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; }
.ai__circle {
  width: 220px; height: 220px; border-radius: 50%; margin: 0 auto;
  background: radial-gradient(circle at 35% 30%, var(--green-100), var(--green-500) 80%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.ai__circle i { font-size: 72px; color: var(--white); }
.ai__content .badge { background: var(--green-100); }
.ai__content p { margin: 10px 0 16px; font-size: 15px; }

.check-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 8px; font-size: 14.5px; color: var(--ink-700); }
.check-list li i { color: var(--green-700); font-size: 19px; flex-shrink: 0; margin-top: 1px; }
.check-list--lg li { font-size: 16px; font-weight: 500; color: var(--ink-900); }

/* ---------- Brand section ---------- */
.brand-section__inner { text-align: center; max-width: 720px; margin: 0 auto; }
.brand-section__logo { width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 22px; }
.brand-section__sub { color: var(--red-600); font-weight: 700; letter-spacing: 1px; margin: 8px 0 18px; }
.brand-section__desc { font-size: 16px; }

/* ---------- Commitments ---------- */
.commit__inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; }
.commit__visual svg { width: 100%; max-width: 220px; margin: 0 auto; display: block; }
.commit__content h2 { margin-bottom: 16px; }

/* ---------- Register / Contact ---------- */
.register {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(20,83,45,.88), rgba(20,83,45,.94)),
    repeating-linear-gradient(115deg, rgba(255,255,255,.05) 0 2px, transparent 2px 26px),
    linear-gradient(160deg, var(--green-600), var(--green-900) 70%);
  color: var(--white);
}
.register::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.15) 2px, transparent 2.5px);
  background-size: 34px 34px;
  opacity: .5;
  pointer-events: none;
}
.register__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.register__info h1, .register__info h2 { color: var(--white); font-size: 30px; margin: 6px 0 14px; }
.register__info p { color: rgba(255,255,255,.85); margin-bottom: 22px; }
.contact-list li { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; color: rgba(255,255,255,.92); font-size: 15px; }
.contact-list li i { font-size: 18px; color: var(--green-100); }

.register__form { background: var(--white); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.register__form input, .register__form textarea {
  width: 100%; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 11px 14px; font-family: inherit; font-size: 14px; margin-bottom: 10px;
  color: var(--ink-900); background: var(--green-50); transition: border-color .2s;
}
.register__form input:focus, .register__form textarea:focus { outline: none; border-color: var(--green-700); background: var(--white); }
.register__form textarea { resize: vertical; }

/* ---------- Footer ---------- */
.footer { background: var(--ink-900); color: rgba(255,255,255,.75); }
.footer__inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 60px 24px 40px; }
.footer__brand img { width: 60px; height: 60px; border-radius: 50%; margin-bottom: 16px; }
.footer__brand p { color: rgba(255,255,255,.8); font-size: 14.5px; }
.footer__slogan { font-style: italic; color: var(--green-500); margin-top: 8px; }
.footer h4 { color: var(--white); font-size: 15px; margin-bottom: 18px; }
.footer__col a { display: block; margin-bottom: 10px; font-size: 14.5px; color: rgba(255,255,255,.75); transition: color .2s; }
.footer__col a:hover { color: var(--green-500); }
.footer__col p { color: rgba(255,255,255,.75); font-size: 14.5px; margin-bottom: 10px; display: flex; gap: 8px; align-items: flex-start; }
.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; font-size: 17px; transition: background .2s;
}
.footer__social a:hover { background: var(--green-700); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 24px; text-align: center; font-size: 13px; color: rgba(255,255,255,.55); }

/* ---------- Floating call button ---------- */
.float-call {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--red-600); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; box-shadow: 0 8px 20px rgba(220,38,38,.4);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(220,38,38,.5); }
  70% { box-shadow: 0 0 0 14px rgba(220,38,38,0); }
  100% { box-shadow: 0 0 0 0 rgba(220,38,38,0); }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
  h1 { font-size: 36px; }
  h2 { font-size: 27px; }
  .hero__inner { grid-template-columns: 1fr; text-align: center; padding-top: 44px; }
  .hero__content p { margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { order: -1; max-width: 260px; margin: 0 auto; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .ai__inner, .commit__inner, .register__inner { grid-template-columns: 1fr; }
  .ai__visual, .commit__visual { order: -1; }
  .register__info { text-align: center; }
  .contact-list li { justify-content: center; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .topbar__inner { justify-content: center; text-align: center; }
  .topbar__slogan { display: none; }
  .nav {
    position: fixed; top: 0; right: -280px; width: 260px; height: 100vh;
    background: var(--white); flex-direction: column; gap: 4px;
    padding: 90px 28px; box-shadow: -8px 0 30px rgba(0,0,0,.1);
    transition: right .3s ease; z-index: 99;
  }
  .nav.is-open { right: 0; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav__toggle { display: block; }
  .header__cta { display: none; }
  .grid--3 { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .trust-strip__inner { justify-content: center; text-align: center; }
  .cta-banner__inner { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; text-align: center; }
  .footer__col p, .footer__social { justify-content: center; }
  .footer__brand img { margin-left: auto; margin-right: auto; }
}

@media (max-width: 480px) {
  h1 { font-size: 30px; }
  .section { padding: 60px 0; }
  .grid--4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Bo sung rieng cho ban WordPress — highlight muc menu dang active
   (WordPress tu gan class current-menu-item / current_page_item cho <li>)
   ========================================================================== */
.nav .current-menu-item > a,
.nav .current_page_item > a,
.nav .current-menu-parent > a {
  color: var(--green-700);
}

/* WordPress bao moi muc menu trong <li> (thay vi <a> truc tiep nhu ban tinh) —
   bo dau cham dau dong mac dinh cua trinh duyet cho <li> nam ngoai <ul>. */
.nav li,
.footer__col li {
  list-style: none;
}

/* ==========================================================================
   Noi dung trang tu tao bang Gutenberg (page.php > .entry-content) —
   block thuong nam trong khung container nhu moi noi khac tren site, chi
   block "Rong/Toan man hinh" moi duoc tran ra ngoai.
   ========================================================================== */
.entry-content { padding: 32px 0 0; }

.entry-content > * {
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  margin-top: 0;
  margin-bottom: 32px;
}

.entry-content > .alignwide {
  max-width: 1400px;
}

.entry-content > .alignfull {
  max-width: none;
  width: 100vw;
  padding-left: 0;
  padding-right: 0;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

/* Cau noi style cho block loi (Button, Columns) khi admin gan them class
   co san (vd "btn--primary", "btn--white") de trong giong het nut trong
   thiet ke goc thay vi mau mac dinh cua Gutenberg. */
.entry-content .wp-block-button.btn--primary .wp-block-button__link,
.entry-content .wp-block-button__link.btn--primary {
  background: var(--green-700);
  color: var(--white);
  border-radius: 999px;
  padding: 12px 28px;
  font-weight: 600;
}
.entry-content .wp-block-button.btn--white .wp-block-button__link,
.entry-content .wp-block-button__link.btn--white {
  background: var(--white);
  color: var(--green-700);
  border-radius: 999px;
  padding: 12px 28px;
  font-weight: 600;
}
.entry-content .cta-banner { color: var(--white); }
.entry-content .cta-banner .wp-block-heading { color: var(--white); }
.entry-content .card--service .card__icon { font-size: 28px; }

/* Block Group voi layout "constrained"/"default" luon boc noi dung con
   trong 1 lop <div class="wp-block-group__inner-container"> — lop nay tro
   thanh 1 o luoi duy nhat cua .grid ben ngoai (thay vi 3 o). Dat display:
   contents de "xoa" lop bao boc nay khoi cay bo cuc, cho 3 the ben trong
   tro thanh con truc tiep cua .grid.grid--3 (da co san grid-template-columns
   + cac breakpoint responsive tu truoc). */
.grid > .wp-block-group__inner-container {
  display: contents;
}