/* ============================================================
 * Mohinhlai.com — stylesheet. Light, ấm, teal + amber.
 * Display: Lora · Body: Be Vietnam Pro
 * ============================================================ */

:root {
  --paper: #FBFAF7;
  --surface: #F3F1EB;
  --ink: #20313D;
  --ink-soft: #56666F;
  --line: #DDD9CF;
  --accent: #0E7C6B;
  --accent-dark: #0A5F52;
  --accent-soft: #E3F0ED;
  --amber: #A8690F;
  --amber-soft: #F5EBDA;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(32, 49, 61, .08), 0 4px 16px rgba(32, 49, 61, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); }
.container { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }
.skip { position: absolute; left: -9999px; }
.skip:focus { position: fixed; left: 1rem; top: 1rem; background: var(--ink); color: #fff; padding: .5rem 1rem; z-index: 99; border-radius: var(--radius); }

h1, h2, h3 { font-family: Lora, Georgia, serif; line-height: 1.2; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.9rem); font-weight: 700; margin: 0 0 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 600; margin: 0 0 .8rem; }
h3 { font-size: 1.1rem; font-weight: 600; margin: 0 0 .5rem; font-family: "Be Vietnam Pro", sans-serif; }
p { margin: 0 0 1rem; }
.muted { color: var(--ink-soft); }

/* ---------- Header ---------- */
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.nav-row { display: flex; align-items: center; gap: 1.2rem; padding-top: .7rem; padding-bottom: .7rem; flex-wrap: wrap; }
.brand { font-family: Lora, Georgia, serif; font-weight: 700; font-size: 1.35rem; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand-lai { color: var(--accent); }
.nav { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-right: auto; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: .92rem; font-weight: 500; padding: .3rem 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.on { color: var(--accent-dark); border-bottom-color: var(--accent); }
.nav-cta { display: flex; align-items: center; gap: .9rem; }
.lang-switch { display: flex; gap: .15rem; }
.lang-switch .lang { font-size: .72rem; font-weight: 700; padding: .2rem .4rem; border-radius: 4px; text-decoration: none; color: var(--ink-soft); }
.lang-switch .lang.on { background: var(--accent-soft); color: var(--accent-dark); }
.lang-switch a.lang:hover { background: var(--surface); color: var(--ink); }
.tel { color: var(--ink); font-weight: 600; text-decoration: none; font-size: .92rem; white-space: nowrap; }

.btn { display: inline-block; padding: .6rem 1.3rem; border-radius: var(--radius); font-weight: 600; font-size: .95rem; text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: var(--accent); color: var(--accent-dark); background: transparent; }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-big { padding: .85rem 1.8rem; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero { padding: 3.5rem 0 3rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.5rem; align-items: center; }
.eyebrow { font-size: .8rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--amber); margin-bottom: .8rem; }
.hero .lede { font-size: 1.12rem; color: var(--ink-soft); max-width: 34rem; }
.hero-ctas { display: flex; gap: .9rem; flex-wrap: wrap; margin-top: 1.4rem; }
.hero-note { font-size: .85rem; color: var(--ink-soft); margin-top: .8rem; }

/* Thẻ minh họa "lai" bên phải hero */
.lai-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); overflow: hidden; }
.lai-card .half { padding: 1.15rem 1.3rem; }
.lai-card .half.old { background: var(--amber-soft); }
.lai-card .half.new { background: var(--accent-soft); }
.lai-card h4 { margin: 0 0 .35rem; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.lai-card .old h4 { color: var(--amber); }
.lai-card .new h4 { color: var(--accent-dark); }
.lai-card p { font-size: .9rem; margin: 0; }
.lai-card .join { text-align: center; font-family: Lora, serif; font-size: 1.3rem; color: var(--ink-soft); padding: .35rem 0; background: #fff; }

/* ---------- Sections ---------- */
.section { padding: 3rem 0; }
.section.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 44rem; margin-bottom: 1.8rem; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--accent-dark); }
.card .price { color: var(--accent-dark); font-weight: 700; margin-top: auto; padding-top: .6rem; }
.card .rep { font-size: .82rem; color: var(--ink-soft); }
.card ul { padding-left: 1.15rem; margin: .4rem 0 .8rem; }
.card li { margin-bottom: .3rem; font-size: .92rem; }

.pill { display: inline-block; font-size: .74rem; font-weight: 600; padding: .12rem .6rem; border-radius: 99px; background: var(--accent-soft); color: var(--accent-dark); margin: 0 .3rem .3rem 0; text-decoration: none; }
.pill:hover { background: var(--accent); color: #fff; }
.pill.amber { background: var(--amber-soft); color: var(--amber); }

/* ---------- Trang chi tiết ---------- */
.pagehead { padding: 2.8rem 0 1.5rem; }
.pagehead .lede { font-size: 1.08rem; color: var(--ink-soft); max-width: 40rem; }
.crumbs { font-size: .82rem; color: var(--ink-soft); margin-bottom: .8rem; }
.crumbs a { color: var(--ink-soft); }

.prose { max-width: 44rem; }
.prose h2 { margin-top: 2.2rem; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: .45rem; }
.prose blockquote { border-left: 3px solid var(--accent); margin: 1.4rem 0; padding: .2rem 0 .2rem 1.2rem; font-family: Lora, serif; font-style: italic; font-size: 1.08rem; }

.callout { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--amber); padding: 1rem 1.2rem; border-radius: var(--radius); margin: 1.4rem 0; font-size: .93rem; }

.faq details { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; margin-bottom: .6rem; padding: 0; }
.faq summary { cursor: pointer; font-weight: 600; padding: .85rem 1.1rem; }
.faq details p { padding: 0 1.1rem 0.9rem; margin: 0; color: var(--ink-soft); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--accent); color: #fff; padding: 2.6rem 0; }
.cta-band h2 { color: #fff; margin-bottom: .4rem; }
.cta-band p { color: #DFF0EC; max-width: 38rem; }
.cta-band .btn { background: #fff; color: var(--accent-dark); }
.cta-band .btn:hover { background: var(--amber-soft); }
.cta-band .band-row { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }

/* ---------- Form ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); padding: 1.8rem; max-width: 34rem; }
.form-row { margin-bottom: 1rem; }
.form-row label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: .65rem .8rem; border: 1px solid var(--line); border-radius: var(--radius);
  font: inherit; background: var(--paper); color: var(--ink);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.form-err { color: #B3261E; font-size: .82rem; margin-top: .25rem; }
.form-ok { background: var(--accent-soft); border: 1px solid var(--accent); color: var(--accent-dark); padding: 1rem 1.2rem; border-radius: var(--radius); margin-bottom: 1.2rem; font-weight: 500; }

/* ---------- Bảng giá ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; align-items: stretch; }
.price-card { position: relative; }
.price-card.featured { border-color: var(--accent); border-width: 2px; }
.price-card .badge { position: absolute; top: -0.75rem; left: 1.2rem; background: var(--amber); color: #fff; font-size: .72rem; font-weight: 700; padding: .15rem .7rem; border-radius: 99px; }
.price-card .amount { font-family: Lora, serif; font-size: 1.35rem; font-weight: 700; color: var(--accent-dark); margin: .2rem 0 .6rem; }

/* ---------- Bài viết ---------- */
.art-list .card { margin-bottom: 1rem; }
.art-meta { font-size: .8rem; color: var(--ink-soft); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #C9D2D8; margin-top: 3rem; padding: 2.5rem 0 1.5rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; }
.foot-brand { color: #fff; font-size: 1.25rem; margin-bottom: .5rem; }
.foot-desc { font-size: .88rem; }
.foot-contact a { color: #fff; text-decoration: none; }
.foot-h { color: #fff; font-weight: 700; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: .6rem; }
.site-footer nav a { display: block; color: #C9D2D8; text-decoration: none; font-size: .88rem; padding: .18rem 0; }
.site-footer nav a:hover { color: #fff; }
.foot-legal { border-top: 1px solid #3A4B57; margin-top: 2rem; padding-top: 1.2rem; font-size: .8rem; color: #8FA0AB; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .grid-3, .price-grid, .foot-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .grid-3, .grid-2, .price-grid, .foot-grid { grid-template-columns: 1fr; }
  .nav { order: 3; width: 100%; }
  .nav-cta { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}