/* =========================================================
   Website29 — Dịch vụ thiết kế website
   Stylesheet dùng chung cho toàn bộ site
   ========================================================= */

:root {
  --primary: #3b5bfd;
  --primary-600: #2f49e0;
  --primary-50: #eef1ff;
  --accent: #ff7a45;
  --accent-50: #fff2ec;
  --ink: #0f172a;
  --ink-2: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --soft: #f6f8fc;
  --dark: #0b1230;
  --success: #16a34a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
  --shadow: 0 10px 30px -12px rgba(15, 23, 42, .18);
  --shadow-lg: 0 30px 60px -20px rgba(30, 41, 99, .35);
  --grad: linear-gradient(135deg, #3b5bfd 0%, #7c4dff 55%, #ff7a45 120%);
  --container: 1200px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, iframe { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.015em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }

.container { width: min(100% - 32px, var(--container)); margin-inline: auto; }
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section--soft { background: var(--soft); }
.section--dark { background: var(--dark); color: #cbd5e1; }
.section--dark h2, .section--dark h3 { color: #fff; }
.text-grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.muted { color: var(--muted); }
.center { text-align: center; }

.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head p { color: var(--muted); font-size: 1.075rem; }
.section-head--left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--primary); background: var(--primary-50);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
}
.section--dark .eyebrow { background: rgba(255,255,255,.08); color: #a5b4fc; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; border: 1.5px solid transparent;
  font-weight: 600; font-size: .95rem; cursor: pointer; white-space: nowrap;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 24px -10px rgba(59,91,253,.7); }
.btn-primary:hover { background: var(--primary-600); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 10px 24px -10px rgba(255,122,69,.8); }
.btn-outline { border-color: var(--line); background: #fff; color: var(--ink); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-light { background: #fff; color: var(--ink); }
.btn-ghost-light { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,.1); }
.btn-sm { padding: 9px 16px; font-size: .85rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(255,255,255,.82); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 6px 20px -16px rgba(15,23,42,.4); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; color: var(--ink); }
.logo-mark { width: 36px; height: 36px; flex: none; display: block; }
.logo span b { color: var(--primary); }
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav > a {
  padding: 8px 14px; border-radius: 999px; font-weight: 500; font-size: .95rem; color: var(--ink-2);
  white-space: nowrap; transition: background .2s, color .2s;
}
.nav > a:hover { background: var(--soft); color: var(--primary); }
.nav > a.active { color: var(--primary); background: var(--primary-50); }
.header-cta { display: flex; gap: 10px; align-items: center; }
.hotline { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); font-size: .95rem; }
.hotline svg { width: 18px; color: var(--accent); }
.burger {
  display: none; margin-left: auto; width: 44px; height: 44px; border-radius: 12px;
  border: 1px solid var(--line); background: #fff; cursor: pointer; place-items: center;
}
.burger span, .burger span::before, .burger span::after {
  display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; position: relative; transition: .25s;
}
.burger span::before, .burger span::after { content: ""; position: absolute; left: 0; }
.burger span::before { top: -6px; } .burger span::after { top: 6px; }
.nav-open .burger span { background: transparent; }
.nav-open .burger span::before { top: 0; transform: rotate(45deg); }
.nav-open .burger span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 1280px) {
  .hotline { display: none; }
}
@media (max-width: 1180px) {
  .burger { display: grid; }
  .header-cta { display: none; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch;
    background: #fff; padding: 16px; gap: 4px; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); transform: translateY(-120%); transition: transform .3s; z-index: -1;
  }
  .nav > a { padding: 12px 16px; border-radius: 12px; }
  .nav .nav-mobile-cta { display: flex; margin-top: 8px; }
  .nav-open .nav { transform: translateY(0); }
}
.nav-mobile-cta { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(56px, 8vw, 96px) 0 clamp(64px, 8vw, 110px); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -30% -10% auto auto; width: 760px; height: 760px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(124,77,255,.18), transparent 70%); z-index: -1;
}
.hero::after {
  content: ""; position: absolute; inset: auto auto -40% -15%; width: 680px; height: 680px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255,122,69,.14), transparent 70%); z-index: -1;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero-lead { font-size: 1.15rem; color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 36px; }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-stats strong { display: block; font-size: 1.8rem; color: var(--ink); line-height: 1.1; }
.hero-stats span { color: var(--muted); font-size: .9rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 6px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line); font-size: .88rem; font-weight: 500; margin-bottom: 22px; box-shadow: var(--shadow-sm);
}
.hero-badge b { background: var(--accent); color: #fff; padding: 3px 10px; border-radius: 999px; font-size: .75rem; }

.hero-visual { position: relative; min-height: 440px; }
.browser {
  background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg); overflow: hidden; border: 1px solid var(--line);
}
.browser-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #f1f5f9; border-bottom: 1px solid var(--line); }
.browser-bar i { width: 10px; height: 10px; border-radius: 50%; background: #cbd5e1; }
.browser-bar i:nth-child(1) { background: #ff5f57; } .browser-bar i:nth-child(2) { background: #febc2e; } .browser-bar i:nth-child(3) { background: #28c840; }
.browser-bar .url { margin-left: 10px; flex: 1; background: #fff; border-radius: 6px; font-size: .72rem; color: var(--muted); padding: 3px 10px; }
.hero-visual .browser--main { position: relative; z-index: 2; }
.hero-visual .browser--back { position: absolute; width: 62%; right: -6%; top: -36px; z-index: 1; transform: rotate(4deg); opacity: .95; }
.hero-visual .phone {
  position: absolute; left: -28px; bottom: -40px; width: 150px; z-index: 3; border-radius: 26px; border: 7px solid var(--ink);
  background: #fff; overflow: hidden; box-shadow: var(--shadow-lg); aspect-ratio: 9/18;
}
.float-card {
  position: absolute; z-index: 4; background: #fff; border-radius: 14px; padding: 12px 16px; box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 12px; font-size: .85rem; animation: floaty 5s ease-in-out infinite;
}
.float-card .ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; font-size: 1.1rem; }
.float-card strong { display: block; color: var(--ink); font-size: .95rem; }
.float-card--1 { right: -10px; bottom: 40px; }
.float-card--2 { left: 30%; top: -26px; animation-delay: -2.5s; }
@keyframes floaty { 50% { transform: translateY(-10px); } }

/* mini mock site inside hero browser */
.mock { padding: 18px; display: grid; gap: 12px; }
.mock-nav { display: flex; justify-content: space-between; align-items: center; }
.mock-nav b { width: 70px; height: 10px; border-radius: 4px; background: var(--ink); }
.mock-nav span { display: flex; gap: 8px; } .mock-nav span i { width: 34px; height: 6px; border-radius: 3px; background: #cbd5e1; }
.mock-hero { border-radius: 10px; padding: 26px 20px; background: var(--grad); color: #fff; display: grid; gap: 8px; }
.mock-hero i { display: block; height: 10px; border-radius: 4px; background: rgba(255,255,255,.9); }
.mock-hero i:nth-child(1) { width: 70%; height: 16px; } .mock-hero i:nth-child(2) { width: 50%; background: rgba(255,255,255,.6); }
.mock-hero em { width: 80px; height: 22px; border-radius: 999px; background: #fff; margin-top: 6px; }
.mock-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock-cards div { border-radius: 8px; background: var(--soft); padding: 10px; display: grid; gap: 6px; }
.mock-cards div::before { content: ""; height: 46px; border-radius: 6px; background: linear-gradient(135deg, #c7d2fe, #fbcfe8); }
.mock-cards div i { height: 6px; border-radius: 3px; background: #cbd5e1; }
.mock-cards div i:last-child { width: 60%; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 0; margin: 30px 10px 30px 30px; }
}
@media (max-width: 560px) {
  .hero-visual .phone { width: 110px; left: -20px; }
  .float-card--2 { display: none; }
  .hero-stats { gap: 24px; }
}

/* ---------- Hero nền đêm (trang chủ) ---------- */
.hero--night { background: url("../img/bg-night.svg") center bottom / cover no-repeat, var(--dark); color: #cbd5e1; }
.hero--night::before, .hero--night::after { display: none; }
.hero--night h1 { color: #fff; }
.hero--night .hero-lead { color: #cbd5e1; }
.hero--night .hero-stats strong { color: #fff; }
.hero--night .hero-stats span { color: #aab4d4; }
.hero--night .hero-badge { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); color: #e0e7ff; box-shadow: none; backdrop-filter: blur(6px); }
.hero--night .btn-outline, .page-hero--dark .btn-outline { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.35); color: #fff; }
.hero--night .btn-outline:hover, .page-hero--dark .btn-outline:hover { background: rgba(255,255,255,.14); border-color: #fff; color: #fff; }
.hero--night .text-grad, .page-hero--dark .text-grad { background-image: linear-gradient(90deg, #9fb0ff 0%, #c7a8ff 55%, #ffb38a 100%); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  position: relative; padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 7vw, 80px); overflow: hidden;
  background: radial-gradient(1200px 500px at 85% -20%, rgba(124,77,255,.14), transparent 60%),
              radial-gradient(900px 400px at -10% 110%, rgba(255,122,69,.12), transparent 60%), var(--soft);
}
.page-hero--dark {
  background: url("../img/bg-night.svg") center bottom / cover no-repeat, var(--dark);
  color: #cbd5e1;
}
.page-hero--dark h1 { color: #fff; }
.page-hero--dark .eyebrow { background: rgba(255,255,255,.08); color: #a5b4fc; }
.page-hero .lead { font-size: 1.15rem; max-width: 680px; color: var(--muted); }
.page-hero--dark .lead { color: #cbd5e1; }
.breadcrumb { display: flex; gap: 8px; font-size: .88rem; color: var(--muted); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--primary); }
.page-hero--dark .breadcrumb { color: #94a3b8; }
.page-hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .page-hero-grid { grid-template-columns: 1fr; } }

/* ---------- Grids & Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card p { color: var(--muted); margin: 0; }
.icon-box {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 18px;
  background: var(--primary-50); color: var(--primary); font-size: 1.5rem; line-height: 1;
}
.icon-box svg { width: 26px; height: 26px; }
.icon-box--accent { background: var(--accent-50); color: var(--accent); }
.icon-box--violet { background: #f3edff; color: #7c4dff; }
.icon-box--green { background: #e9f9ef; color: var(--success); }
.section--dark .card { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.08); }
.section--dark .card p { color: #94a3b8; }
.section--dark .icon-box { background: rgba(124,77,255,.18); color: #c4b5fd; }

/* Service cards (home) */
.service-card { position: relative; display: flex; flex-direction: column; padding: 32px; overflow: hidden; }
.service-card .tag { position: absolute; top: 22px; right: 22px; font-size: .75rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--accent-50); color: var(--accent); }
.service-card ul { margin: 18px 0 24px; display: grid; gap: 8px; }
.service-card li { display: flex; gap: 10px; color: var(--ink-2); font-size: .95rem; }
.service-card li::before { content: "✓"; color: var(--success); font-weight: 700; }
.service-card .price { margin-top: auto; padding-top: 18px; border-top: 1px dashed var(--line); display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.service-card .price small { color: var(--muted); display: block; font-size: .8rem; }
.service-card .price strong { font-size: 1.25rem; color: var(--ink); }
.service-card--featured { background: var(--dark); color: #cbd5e1; border-color: var(--dark); }
.service-card--featured h3, .service-card--featured .price strong { color: #fff; }
.service-card--featured p, .service-card--featured li { color: #cbd5e1; }
.service-card--featured .price { border-color: rgba(255,255,255,.15); }
.service-card--featured .icon-box { background: rgba(255,255,255,.1); color: #fff; }

/* Feature list with check */
.check-list { display: grid; gap: 12px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; }
.check-list li::before {
  content: ""; flex: 0 0 22px; height: 22px; margin-top: 2px; border-radius: 50%;
  background: var(--primary-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233b5bfd' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}

/* Split section */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split--reverse > :first-child { order: 2; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 40px; } .split--reverse > :first-child { order: 0; } }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 26px 22px; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-size: 2rem; font-weight: 800; line-height: 1; margin-bottom: 14px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step h3 { font-size: 1.05rem; }
.step p { color: var(--muted); font-size: .93rem; margin: 0; }
.step .dur { display: inline-block; margin-top: 12px; font-size: .78rem; font-weight: 600; color: var(--primary); background: var(--primary-50); padding: 3px 10px; border-radius: 999px; }

/* ---------- Stats band ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-band strong { display: block; font-size: clamp(2rem, 4vw, 2.8rem); color: #fff; line-height: 1.1; }
.stats-band span { color: #94a3b8; }
@media (max-width: 720px) { .stats-band { grid-template-columns: repeat(2, 1fr); row-gap: 36px; } }

/* ---------- Template gallery ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.chip {
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer;
  font-weight: 500; font-size: .92rem; transition: .2s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.chip .count { opacity: .6; margin-left: 4px; font-size: .8rem; }
.gallery-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.search {
  display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; padding: 0 16px; background: #fff; min-width: 280px;
}
.search input { border: 0; outline: 0; padding: 11px 0; flex: 1; background: transparent; }
.search svg { width: 18px; color: var(--muted); }

.tpl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 1024px) { .tpl-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .tpl-grid { grid-template-columns: 1fr; } .search { min-width: 0; width: 100%; } }
.tpl-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column; }
.tpl-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.tpl-thumb { position: relative; aspect-ratio: 16 / 11; overflow: hidden; background: var(--soft); border-bottom: 1px solid var(--line); }
.tpl-thumb iframe {
  position: absolute; top: 0; left: 0; width: 1280px; max-width: none; height: 880px; border: 0; pointer-events: none;
  transform-origin: 0 0; transform: scale(var(--s, .3));
}
.tpl-thumb .overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px;
  background: rgba(11,18,48,.55); opacity: 0; transition: opacity .25s; backdrop-filter: blur(2px);
}
.tpl-card:hover .overlay, .tpl-card:focus-within .overlay { opacity: 1; }
.tpl-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.tpl-meta { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.tpl-cat { font-size: .78rem; font-weight: 600; color: var(--primary); background: var(--primary-50); padding: 3px 10px; border-radius: 999px; }
.tpl-price { font-weight: 700; color: var(--ink); }
.tpl-price s { color: var(--muted); font-weight: 400; font-size: .82rem; margin-right: 6px; }
.tpl-body h3 { margin: 0; font-size: 1.1rem; }
.tpl-feats { display: flex; flex-wrap: wrap; gap: 6px; }
.tpl-feats span { font-size: .75rem; color: var(--muted); background: var(--soft); padding: 3px 9px; border-radius: 6px; }
.tpl-actions { display: flex; gap: 8px; margin-top: auto; padding-top: 6px; }
.tpl-actions .btn { flex: 1; }
.empty-state { text-align: center; padding: 60px 0; color: var(--muted); grid-column: 1 / -1; }

/* Preview modal */
.modal { position: fixed; inset: 0; z-index: 200; display: none; }
.modal.open { display: flex; flex-direction: column; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(11,18,48,.75); backdrop-filter: blur(4px); }
.modal-panel { position: relative; margin: 2vh auto; width: min(96vw, 1400px); height: 96vh; background: #1e2440; border-radius: 16px; display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow-lg); }
.modal-bar { display: flex; align-items: center; gap: 12px; padding: 10px 14px; color: #e2e8f0; flex-wrap: wrap; }
.modal-bar h4 { margin: 0; color: #fff; font-size: 1rem; flex: 1; min-width: 160px; }
.device-switch { display: flex; gap: 4px; background: rgba(255,255,255,.08); border-radius: 999px; padding: 4px; }
.device-switch button { border: 0; background: transparent; color: #cbd5e1; width: 38px; height: 32px; border-radius: 999px; cursor: pointer; display: grid; place-items: center; }
.device-switch button svg { width: 18px; }
.device-switch button.active { background: #fff; color: var(--ink); }
.modal-close { border: 0; background: rgba(255,255,255,.1); color: #fff; width: 36px; height: 36px; border-radius: 50%; cursor: pointer; font-size: 1.3rem; line-height: 1; }
.modal-stage { flex: 1; display: flex; justify-content: center; background: #2b3156; padding: 0; overflow: auto; }
.modal-stage iframe { width: 100%; height: 100%; border: 0; background: #fff; transition: width .35s; }
.modal-stage.tablet iframe { width: 820px; border-radius: 12px; margin: 16px 0; height: calc(100% - 32px); }
.modal-stage.mobile iframe { width: 390px; border-radius: 22px; margin: 16px 0; height: calc(100% - 32px); }
@media (max-width: 640px) { .modal-panel { margin: 0; width: 100vw; height: 100vh; border-radius: 0; } .device-switch { display: none; } }

/* ---------- Pricing ---------- */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
@media (max-width: 900px) { .pricing { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; } }
.price-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 32px; display: flex; flex-direction: column; }
.price-card h3 { margin-bottom: 4px; }
.price-card .desc { color: var(--muted); font-size: .93rem; min-height: 48px; }
.price-card .amount { font-size: 2.2rem; font-weight: 800; color: var(--ink); margin: 14px 0 4px; line-height: 1.1; }
.price-card .amount small { font-size: .95rem; font-weight: 500; color: var(--muted); }
.price-card .check-list { margin: 22px 0 28px; font-size: .95rem; }
.price-card .btn { margin-top: auto; }
.price-card--hot { border: 2px solid var(--primary); box-shadow: var(--shadow-lg); transform: scale(1.03); }
.price-card--hot .ribbon { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--grad); color: #fff; font-size: .78rem; font-weight: 700; padding: 5px 14px; border-radius: 999px; white-space: nowrap; }
@media (max-width: 900px) { .price-card--hot { transform: none; } }

/* ---------- Testimonials ---------- */
.quote { background: #fff; border-radius: var(--radius); padding: 28px; border: 1px solid var(--line); display: flex; flex-direction: column; gap: 16px; }
.quote .stars { color: #f59e0b; letter-spacing: 2px; }
.quote blockquote { margin: 0; color: var(--ink-2); }
.quote .who { display: flex; gap: 12px; align-items: center; margin-top: auto; }
.avatar { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff; background: var(--grad); flex: 0 0 auto; }
.quote .who strong { display: block; color: var(--ink); font-size: .95rem; }
.quote .who span { font-size: .85rem; color: var(--muted); }

.logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px 48px; opacity: .65; }
.logos span { font-weight: 800; font-size: 1.25rem; letter-spacing: -.02em; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 0 22px; transition: box-shadow .2s; }
.faq details[open] { box-shadow: var(--shadow); border-color: transparent; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 600; color: var(--ink); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--primary); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 18px; margin: 0; }

/* ---------- Forms ---------- */
.form-card { background: #fff; border-radius: 20px; padding: clamp(24px, 4vw, 40px); box-shadow: var(--shadow-lg); border: 1px solid var(--line); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label, .field .label { font-weight: 600; font-size: .88rem; color: var(--ink); }
.field label .req { color: #e11d48; }
.field input, .field select, .field textarea {
  border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px; background: #fff; outline: none; transition: border-color .2s, box-shadow .2s; width: 100%;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(59,91,253,.12); }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #e11d48; }
.field .err { color: #e11d48; font-size: .8rem; display: none; }
.field.invalid .err { display: block; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.checks label { display: inline-flex; gap: 8px; align-items: center; border: 1.5px solid var(--line); border-radius: 999px; padding: 7px 14px; cursor: pointer; font-weight: 500; font-size: .88rem; transition: .2s; }
.checks input { accent-color: var(--primary); }
.checks label:has(input:checked) { border-color: var(--primary); background: var(--primary-50); color: var(--primary); }
.form-note { font-size: .82rem; color: var(--muted); margin-top: 12px; }
.form-success {
  display: none; text-align: center; padding: 30px 10px;
}
.form-success .ic { width: 64px; height: 64px; border-radius: 50%; background: #e9f9ef; color: var(--success); display: grid; place-items: center; margin: 0 auto 16px; font-size: 1.8rem; }
form.is-sent > :not(.form-success) { display: none; }
form.is-sent .form-success { display: block; }

.contact-info { display: grid; gap: 18px; margin-top: 28px; }
.contact-info li { display: flex; gap: 14px; align-items: center; }
.contact-info .icon-box { margin: 0; width: 46px; height: 46px; }
.contact-info small { display: block; color: var(--muted); font-size: .82rem; }
.contact-info strong { color: var(--ink); }
.section--dark .contact-info strong { color: #fff; }

/* ---------- Estimator ---------- */
.estimator { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 960px) { .estimator { grid-template-columns: 1fr; } }
.est-panel { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 28px; display: grid; gap: 26px; }
.est-group h4 { margin: 0 0 12px; font-size: 1rem; display: flex; justify-content: space-between; }
.est-group h4 output { color: var(--primary); }
.opt-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.opt { position: relative; }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt span {
  display: flex; flex-direction: column; gap: 2px; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; cursor: pointer; transition: .2s; height: 100%;
}
.opt span b { font-size: .93rem; color: var(--ink); }
.opt span small { color: var(--muted); font-size: .8rem; }
.opt input:checked + span { border-color: var(--primary); background: var(--primary-50); box-shadow: 0 0 0 3px rgba(59,91,253,.12); }
.opt input:focus-visible + span { outline: 2px solid var(--primary); outline-offset: 2px; }
input[type="range"] { width: 100%; accent-color: var(--primary); }
.est-result { position: sticky; top: calc(var(--header-h) + 20px); background: var(--dark); color: #cbd5e1; border-radius: 20px; padding: 28px; }
.est-result h4 { color: #fff; margin-bottom: 4px; }
.est-total { font-size: clamp(1.8rem, 3.5vw, 2.4rem); font-weight: 800; color: #fff; line-height: 1.2; margin: 10px 0 4px; }
.est-lines { margin: 20px 0; display: grid; gap: 8px; font-size: .9rem; border-top: 1px solid rgba(255,255,255,.1); padding-top: 16px; }
.est-lines li { display: flex; justify-content: space-between; gap: 12px; }
.est-lines li span:last-child { color: #fff; font-weight: 600; white-space: nowrap; }
.est-time { display: flex; gap: 12px; align-items: center; background: rgba(255,255,255,.06); border-radius: 12px; padding: 12px 14px; margin-bottom: 18px; }
.est-time strong { color: #fff; }

/* ---------- Tabs (phases) ---------- */
.tabs-nav { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 28px; }
.tabs-nav button {
  text-align: left; border: 1.5px solid var(--line); background: #fff; border-radius: 16px; padding: 18px; cursor: pointer; transition: .2s; display: grid; gap: 4px;
}
.tabs-nav button small { color: var(--primary); font-weight: 700; font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
.tabs-nav button b { color: var(--ink); font-size: 1rem; }
.tabs-nav button span { color: var(--muted); font-size: .82rem; }
.tabs-nav button.active { border-color: var(--primary); background: var(--primary); box-shadow: 0 14px 30px -14px rgba(59,91,253,.8); }
.tabs-nav button.active small, .tabs-nav button.active b, .tabs-nav button.active span { color: #fff; }
@media (max-width: 900px) { .tabs-nav { grid-template-columns: repeat(2, 1fr); } }
.tab-panel { display: none; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: clamp(24px, 4vw, 40px); }
.tab-panel.active { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; animation: fadeUp .4s; }
@media (max-width: 900px) { .tab-panel.active { grid-template-columns: 1fr; } }
.deliverables { background: var(--soft); border-radius: 16px; padding: 24px; }
.deliverables h4 { font-size: .95rem; margin-bottom: 14px; }
.doc-list { display: grid; gap: 10px; }
.doc-list li { display: flex; gap: 12px; align-items: center; background: #fff; border-radius: 10px; padding: 10px 14px; font-size: .9rem; border: 1px solid var(--line); }
.doc-list li::before { content: "📄"; }
.phase-meta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 20px; }
.phase-meta span { font-size: .85rem; background: var(--primary-50); color: var(--primary); padding: 6px 12px; border-radius: 999px; font-weight: 600; }

/* ---------- Dashboard mock ---------- */
.dash { background: #fff; border-radius: 18px; box-shadow: var(--shadow-lg); overflow: hidden; display: grid; grid-template-columns: 170px 1fr; color: var(--ink-2); font-size: .8rem; border: 1px solid var(--line); }
.dash-side { background: var(--dark); color: #94a3b8; padding: 18px 12px; display: grid; gap: 4px; align-content: start; }
.dash-side .logo { color: #fff; font-size: .95rem; margin-bottom: 14px; padding: 0 6px; }
.dash-side .logo-mark { width: 26px; height: 26px; font-size: .7rem; border-radius: 8px; }
.dash-side a { padding: 8px 10px; border-radius: 8px; display: flex; gap: 8px; align-items: center; }
.dash-side a.on { background: rgba(255,255,255,.08); color: #fff; }
.dash-main { padding: 18px; display: grid; gap: 14px; background: #f8fafc; min-width: 0; }
.dash-main .panel { min-width: 0; overflow-x: auto; }
.dash-top { display: flex; justify-content: space-between; align-items: center; }
.dash-top b { font-size: .95rem; color: var(--ink); }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.kpi { background: #fff; border-radius: 10px; padding: 10px 12px; border: 1px solid var(--line); }
.kpi small { color: var(--muted); display: block; }
.kpi strong { font-size: 1rem; color: var(--ink); }
.kpi em { font-style: normal; font-size: .72rem; color: var(--success); font-weight: 600; }
.kpi em.down { color: #e11d48; }
.dash-row { display: grid; grid-template-columns: 1.6fr 1fr; gap: 10px; }
.panel { background: #fff; border-radius: 10px; padding: 12px; border: 1px solid var(--line); }
.panel h5 { margin: 0 0 10px; font-size: .8rem; color: var(--ink); }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 110px; }
.bars i { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, #7c4dff, #3b5bfd); height: var(--h); animation: grow 1s ease-out both; transform-origin: bottom; }
.bars i:nth-child(odd) { opacity: .55; }
@keyframes grow { from { transform: scaleY(0); } }
.donut { width: 96px; height: 96px; border-radius: 50%; margin: 4px auto 8px; background: conic-gradient(#3b5bfd 0 42%, #7c4dff 0 70%, #ff7a45 0 88%, #e2e8f0 0); display: grid; place-items: center; }
.donut::after { content: "68%"; width: 64px; height: 64px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-weight: 700; color: var(--ink); }
.legend { display: grid; gap: 4px; font-size: .72rem; }
.legend span { display: flex; align-items: center; gap: 6px; }
.legend span::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--c); }
.table-mini { width: 100%; border-collapse: collapse; }
.table-mini td, .table-mini th { padding: 6px 4px; border-bottom: 1px solid var(--line); text-align: left; }
.table-mini th { color: var(--muted); font-weight: 500; }
.pill { font-size: .68rem; padding: 2px 8px; border-radius: 999px; font-weight: 600; }
.pill.ok { background: #e9f9ef; color: var(--success); } .pill.wait { background: #fff7e6; color: #d97706; } .pill.new { background: var(--primary-50); color: var(--primary); }
@media (max-width: 640px) { .dash { grid-template-columns: 1fr; } .dash-side { display: none; } .table-mini th:nth-child(3), .table-mini td:nth-child(3) { display: none; } .kpis { grid-template-columns: repeat(2, 1fr); } .dash-row { grid-template-columns: 1fr; } }

/* Module cards */
.module { display: flex; gap: 16px; align-items: flex-start; }
.module .icon-box { flex: 0 0 auto; margin: 0; }
.module h3 { font-size: 1.05rem; margin-bottom: 4px; }
.module p { font-size: .92rem; }
.module ul { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.module li { font-size: .75rem; background: var(--soft); color: var(--ink-2); padding: 3px 9px; border-radius: 6px; }

/* Case study */
.case { background: #fff; border-radius: 20px; overflow: hidden; border: 1px solid var(--line); display: flex; flex-direction: column; }
.case-head { padding: 26px; color: #fff; background: var(--c, var(--grad)); }
.case-head small { opacity: .85; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; font-size: .75rem; }
.case-head h3 { color: #fff; margin: 6px 0 0; }
.case-body { padding: 24px 26px 28px; display: grid; gap: 16px; }
.case-body p { color: var(--muted); margin: 0; font-size: .93rem; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.case-metrics div { background: var(--soft); border-radius: 12px; padding: 12px; text-align: center; }
.case-metrics strong { display: block; font-size: 1.25rem; color: var(--primary); }
.case-metrics span { font-size: .75rem; color: var(--muted); line-height: 1.3; display: block; }

/* Pain points */
.pain { display: flex; gap: 14px; padding: 20px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.pain .x { flex: 0 0 34px; height: 34px; border-radius: 10px; background: #ffe9ec; color: #e11d48; display: grid; place-items: center; font-weight: 800; }
.pain h4 { margin: 0 0 4px; font-size: 1rem; }
.pain p { margin: 0; color: var(--muted); font-size: .9rem; }

/* Compare table */
.compare { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); font-size: .95rem; }
.compare th, .compare td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare thead th { background: var(--soft); color: var(--ink); }
.compare thead th.hl { background: var(--primary); color: #fff; }
.compare td.hl { background: var(--primary-50); font-weight: 500; color: var(--ink); }
.compare tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; border-radius: 16px; }
.table-wrap .compare { min-width: 680px; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; border-radius: 28px; padding: clamp(36px, 6vw, 64px); overflow: hidden; color: #e0e7ff;
  background: radial-gradient(600px 300px at 100% 0, rgba(255,122,69,.45), transparent 60%), linear-gradient(135deg, #2f49e0, #7c4dff);
  display: grid; grid-template-columns: 1.4fr auto; gap: 28px; align-items: center;
}
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { margin: 0; }
.cta-band .actions { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 800px) { .cta-band { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); color: #94a3b8; padding: 72px 0 28px; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.site-footer .logo { color: #fff; margin-bottom: 16px; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.site-footer ul { display: grid; gap: 10px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem; }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.06); display: grid; place-items: center; font-weight: 700; color: #cbd5e1; font-size: .8rem; }
.socials a:hover { background: var(--primary); color: #fff; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Floating contact ---------- */
.fab { position: fixed; right: 18px; bottom: 18px; z-index: 90; display: grid; gap: 10px; }
.fab a {
  width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; color: #fff; box-shadow: var(--shadow);
  font-weight: 800; font-size: .8rem; transition: transform .2s;
}
.fab a:hover { transform: scale(1.08); }
.fab .zalo { background: #0068ff; }
.fab .call { background: var(--accent); animation: pulse 2s infinite; }
.fab svg { width: 22px; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255,122,69,.6); } 70% { box-shadow: 0 0 0 14px rgba(255,122,69,0); } 100% { box-shadow: 0 0 0 0 rgba(255,122,69,0); } }

/* ---------- Toast ---------- */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 140%); background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 12px; z-index: 300; transition: transform .35s; box-shadow: var(--shadow-lg); font-size: .93rem; max-width: calc(100vw - 32px); }
.toast.show { transform: translate(-50%, 0); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   Giao diện ĐÊM lung linh (Website29) — ghi đè token & thành phần
   Mobile-first: thanh liên hệ cố định dưới đáy, menu toàn màn hình,
   vuốt ngang cho thẻ, vùng chạm >= 44px, chữ form 16px, safe-area.
   ========================================================= */
:root {
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --primary: #8ea0ff; --primary-600: #aab7ff; --primary-50: rgba(142,160,255,.14);
  --accent: #ff8a5b; --accent-50: rgba(255,138,91,.16);
  --ink: #f4f6ff; --ink-2: #d5dcf5; --muted: #9ba8d0;
  --line: rgba(255,255,255,.12);
  --bg: #060a22; --soft: rgba(255,255,255,.035); --dark: #040719;
  --success: #3ddc84;
  --card: linear-gradient(160deg, rgba(255,255,255,.085), rgba(255,255,255,.03));
  --field: rgba(255,255,255,.06);
  --btn-grad: linear-gradient(135deg, #4d6bff 0%, #8b5cff 100%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow: 0 14px 40px -16px rgba(0,0,0,.65);
  --shadow-lg: 0 30px 70px -24px rgba(0,0,0,.7), 0 0 60px -34px rgba(124,92,255,.7);
  --grad: linear-gradient(135deg, #7f93ff 0%, #b18cff 55%, #ff9a6a 120%);
}
/* Mockup sáng (trình duyệt, điện thoại, dashboard) giữ nguyên bảng màu sáng */
.browser, .phone, .dash, .float-card {
  --ink: #0f172a; --ink-2: #1e293b; --muted: #64748b; --line: #e2e8f0; --soft: #f6f8fc;
  --primary: #3b5bfd; --primary-50: #eef1ff; --accent: #ff7a45; --success: #16a34a;
  --grad: linear-gradient(135deg, #3b5bfd 0%, #7c4dff 55%, #ff7a45 120%);
}

html { background: var(--bg); color-scheme: dark; }
body { background: transparent; }
select option { background: #0e1445; color: #fff; }
::selection { background: rgba(142,160,255,.4); color: #fff; }

/* Bầu trời đêm lung linh: cực quang trôi chậm + hai lớp sao nhấp nháy */
html::before {
  content: ""; position: fixed; inset: -15%; z-index: -2; pointer-events: none;
  background:
    radial-gradient(600px 500px at 12% 8%, rgba(124,77,255,.30), transparent 70%),
    radial-gradient(700px 560px at 92% 32%, rgba(59,91,253,.24), transparent 70%),
    radial-gradient(640px 520px at 28% 96%, rgba(255,122,69,.14), transparent 70%);
  animation: aurora 26s ease-in-out infinite alternate;
}
body::before, body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: url("../img/stars.svg") 0 0 / 420px;
  opacity: .5; animation: twinkle 5s ease-in-out infinite alternate;
}
body::after { background-position: 140px 90px; background-size: 640px; opacity: .3; animation-duration: 8s; animation-delay: -3s; }
@keyframes twinkle { from { opacity: .22; } to { opacity: .8; } }
@keyframes aurora { from { transform: translate3d(-2%, 0, 0); } to { transform: translate3d(3%, -2%, 0) scale(1.06); } }

/* Chữ gradient chuyển màu chậm */
.text-grad { background-size: 220% 100%; animation: gradMove 7s ease-in-out infinite alternate; }
@keyframes gradMove { to { background-position: 100% 0; } }
.eyebrow::before { content: "✦"; font-size: .85em; color: #ffd27a; text-shadow: 0 0 10px rgba(255,210,122,.8); }
.section--dark .eyebrow, .page-hero--dark .eyebrow { color: #c4cdff; }

/* ---------- Header ---------- */
/* Mờ kính đặt ở ::before: backdrop-filter trên chính header sẽ khiến menu fixed bên trong bị kẹt trong khung 60px */
.site-header { height: calc(var(--header-h) + var(--safe-t)); padding-top: var(--safe-t); background: transparent; backdrop-filter: none; border-bottom: 1px solid rgba(255,255,255,.06); }
.site-header::before { content: ""; position: absolute; inset: 0; z-index: -2; background: rgba(6,10,34,.72); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); }
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 12px 30px -18px #000; }
.logo-mark { filter: drop-shadow(0 0 10px rgba(124,92,255,.65)); }
.logo span b { color: #ff9a6a; }
.nav > a:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav > a.active { color: #fff; background: rgba(142,160,255,.2); }
.burger { background: rgba(255,255,255,.06); border-color: var(--line); }
.hotline { color: #fff; }

/* ---------- Nút ---------- */
.btn { min-height: 46px; }
.btn-primary { background: var(--btn-grad); color: #fff; box-shadow: 0 12px 30px -10px rgba(110,90,255,.85), inset 0 0 0 1px rgba(255,255,255,.16); position: relative; overflow: hidden; }
.btn-primary:hover { background: linear-gradient(135deg, #5e7aff 0%, #9b6dff 100%); }
.hero-actions .btn-primary::after, .cta-band .btn-light::after, .form-card .btn-primary::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 32%, rgba(255,255,255,.4) 50%, transparent 68%);
  transform: translateX(-130%); animation: shine 4.8s ease-in-out infinite;
}
.cta-band .btn-light { position: relative; overflow: hidden; }
@keyframes shine { 0%, 55% { transform: translateX(-130%); } 100% { transform: translateX(130%); } }
.btn-accent { background: linear-gradient(135deg, #ff7a45, #ff4f8b); box-shadow: 0 12px 30px -10px rgba(255,90,110,.8); }
.btn-outline { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.22); color: #fff; }
.btn-outline:hover { border-color: #aab7ff; background: rgba(255,255,255,.1); color: #fff; }
.btn-light { color: #0f172a; }

/* ---------- Thẻ & khung kính ---------- */
.card, .step, .price-card, .quote, .faq details, .est-panel, .tab-panel, .case, .pain, .tpl-card, .tabs-nav button, .chip, .search {
  background: var(--card); border-color: var(--line);
}
.card:hover, .tpl-card:hover, .step:hover, .case:hover {
  border-color: rgba(142,160,255,.5);
  box-shadow: 0 22px 55px -24px rgba(124,92,255,.75), inset 0 0 0 1px rgba(142,160,255,.18);
}
.icon-box { box-shadow: 0 0 26px -8px currentColor; }
.icon-box--violet { background: rgba(176,140,255,.16); color: #c9b4ff; }
.icon-box--green { background: rgba(61,220,132,.14); color: #5eeaa0; }
.section--soft { background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.012)); }
.section--dark { background: linear-gradient(180deg, rgba(4,7,25,.8), rgba(12,16,58,.8)); }
.service-card--featured { background: linear-gradient(160deg, #1d2477 0%, #3b1f94 100%); border-color: rgba(176,150,255,.55); box-shadow: 0 30px 70px -30px rgba(124,77,255,.9); }
.check-list li::before {
  background: rgba(142,160,255,.16) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239fb0ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}
.chip:hover { color: #fff; border-color: #aab7ff; }
.chip.active { background: var(--btn-grad); border-color: transparent; color: #fff; box-shadow: 0 10px 24px -12px rgba(110,90,255,.9); }
.tpl-feats span, .module li { background: rgba(255,255,255,.07); color: var(--ink-2); }
.tpl-thumb { background: rgba(255,255,255,.04); }
.case-metrics div { background: rgba(255,255,255,.05); }
.pain .x { background: rgba(244,63,94,.16); color: #ff8da3; }
.price-card--hot { border: 1.5px solid transparent; background: linear-gradient(#0f1546, #0b0f3d) padding-box, var(--grad) border-box; box-shadow: 0 30px 80px -30px rgba(124,92,255,.9); }
.deliverables { background: rgba(255,255,255,.04); }
.doc-list li { background: rgba(255,255,255,.05); border-color: var(--line); }
.tabs-nav button.active { background: var(--btn-grad); border-color: transparent; box-shadow: 0 16px 34px -16px rgba(110,90,255,.95); }
.tabs-nav button.active small, .tabs-nav button.active b, .tabs-nav button.active span { color: #fff; }
.compare { background: rgba(255,255,255,.03); }
.compare thead th { background: rgba(255,255,255,.07); }
.compare thead th.hl { background: var(--btn-grad); color: #fff; }
.compare td.hl { background: rgba(142,160,255,.12); }
.faq details[open] { box-shadow: 0 18px 50px -24px rgba(124,92,255,.7); border-color: rgba(142,160,255,.4); }
.est-result { background: linear-gradient(160deg, #171e6b, #0b0f3d); border: 1px solid rgba(142,160,255,.3); box-shadow: var(--shadow-lg); }
.opt input:checked + span { background: rgba(142,160,255,.16); box-shadow: 0 0 0 3px rgba(142,160,255,.16); }
.toast { background: #1a2160; border: 1px solid var(--line); }

/* ---------- Form ---------- */
.form-card { background: linear-gradient(160deg, rgba(24,32,96,.85), rgba(12,16,56,.88)); backdrop-filter: blur(10px); border-color: rgba(142,160,255,.28); box-shadow: var(--shadow-lg); }
.field input, .field select, .field textarea { background: var(--field); border-color: rgba(255,255,255,.16); color: #fff; font-size: 16px; min-height: 48px; }
.field textarea { min-height: 120px; }
.field input::placeholder, .field textarea::placeholder, .search input::placeholder { color: #7b87b3; }
.field input:focus, .field select:focus, .field textarea:focus { background: rgba(255,255,255,.09); border-color: #8ea0ff; box-shadow: 0 0 0 4px rgba(142,160,255,.2); }
.search input { font-size: 16px; color: #fff; }
.checks label { background: rgba(255,255,255,.04); min-height: 40px; }
.checks label:has(input:checked) { background: rgba(142,160,255,.2); border-color: #8ea0ff; color: #fff; }
.form-success .ic { background: rgba(61,220,132,.16); }

/* ---------- CTA, footer ---------- */
.cta-band { box-shadow: 0 30px 80px -30px rgba(124,77,255,.85); }
.cta-band::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: url("../img/stars.svg") 0 0 / 420px; opacity: .5; animation: twinkle 4s ease-in-out infinite alternate; }
.cta-band > * { position: relative; z-index: 1; }
.site-footer { background: linear-gradient(180deg, #050823, #030515); border-top: 1px solid rgba(142,160,255,.16); }

/* ---------- Hero: sao nhấp nháy + sao băng ---------- */
.hero > .container, .page-hero > .container { position: relative; z-index: 1; }
.hero--night::before, .page-hero--dark::before {
  display: block; content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: auto; height: auto; border-radius: 0;
  z-index: 0; pointer-events: none; background: url("../img/stars.svg") 0 0 / 420px; opacity: .7; animation: twinkle 4s ease-in-out infinite alternate;
}
.hero--night::after, .page-hero--dark::after {
  display: block; content: ""; position: absolute; top: 14%; left: -10%; right: auto; bottom: auto; width: 150px; height: 2px; border-radius: 2px;
  z-index: 0; pointer-events: none; background: linear-gradient(90deg, transparent, #fff); box-shadow: 0 0 10px #fff;
  opacity: 0; animation: shoot 9s linear infinite 2s;
}
@keyframes shoot {
  0% { transform: translate(0, 0) rotate(18deg); opacity: 0; }
  2% { opacity: 1; }
  12% { transform: translate(75vw, 26vw) rotate(18deg); opacity: 0; }
  100% { transform: translate(75vw, 26vw) rotate(18deg); opacity: 0; }
}

/* ---------- Thanh liên hệ nhanh ---------- */
.fab .quote-btn, .fab .call span { display: none; }
.fab .zalo { background: linear-gradient(135deg, #0a7cff, #0068ff); }
.fab .call { background: linear-gradient(135deg, #ff8a4c, #ff5a7a); }

/* ---------- Máy tính bảng & điện thoại ---------- */
@media (max-width: 1180px) {
  .nav {
    inset: calc(var(--header-h) + var(--safe-t)) 0 0 0; background: rgba(6,10,34,.97); backdrop-filter: blur(18px);
    padding: 18px 16px calc(28px + var(--safe-b)); gap: 6px; overflow-y: auto; border: 0; box-shadow: none;
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .25s, transform .25s, visibility .25s;
  }
  .nav-open .nav { opacity: 1; visibility: visible; transform: none; }
  .nav > a { font-size: 1.1rem; padding: 14px 16px; min-height: 52px; display: flex; align-items: center; border: 1px solid transparent; }
  .nav > a.active { border-color: rgba(142,160,255,.3); }
  .nav .nav-mobile-cta { min-height: 54px; font-size: 1.05rem; }
  body.nav-open { overflow: hidden; }
}
@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .container { width: min(100% - 28px, var(--container)); }
  .section { padding: 52px 0; }
  .section-head { margin-bottom: 28px; }
  h1 { font-size: clamp(1.95rem, 8.4vw, 2.5rem); }
  h2 { font-size: clamp(1.5rem, 6.6vw, 1.95rem); }
  .logo { font-size: 1.2rem; }
  .hero { padding: 34px 0 54px; }
  .hero-lead, .page-hero .lead { font-size: 1.02rem; }
  .hero-actions { margin: 22px 0 28px; }
  .hero-actions .btn, .cta-band .actions .btn { flex: 1 1 100%; min-height: 52px; font-size: 1rem; }
  .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .hero-stats strong { font-size: 1.4rem; }
  .hero-stats span { font-size: .78rem; display: block; line-height: 1.35; }
  .hero-badge { font-size: .8rem; }
  .card, .quote, .pain { padding: 22px; }
  .price-card { padding: 26px; }
  .page-hero { padding: 36px 0 44px; }

  /* Thanh liên hệ cố định dưới đáy */
  body { padding-bottom: calc(76px + var(--safe-b)); }
  .fab {
    left: 0; right: 0; bottom: 0; display: flex; gap: 8px; padding: 10px 12px calc(10px + var(--safe-b));
    background: rgba(6,10,34,.9); backdrop-filter: blur(14px); border-top: 1px solid var(--line);
  }
  .fab a { flex: 1; width: auto; height: 50px; border-radius: 14px; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: .95rem; white-space: nowrap; }
  .fab .call span, .fab .quote-btn { display: flex; }
  .fab .call { animation: none; }
  .fab .zalo { flex: 0 0 76px; }
  .fab .quote-btn { flex: 1.5; background: var(--btn-grad); color: #fff; font-weight: 700; box-shadow: 0 10px 24px -10px rgba(110,90,255,.9); }
  .toast { bottom: calc(88px + var(--safe-b)); }

  /* Vuốt ngang */
  .snap-m {
    display: grid !important; grid-template-columns: none !important; grid-auto-flow: column; grid-auto-columns: 84%; gap: 14px;
    overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain;
    margin-inline: -14px; padding: 4px 14px 20px; scrollbar-width: none;
  }
  .snap-m::-webkit-scrollbar { display: none; }
  .snap-m > * { scroll-snap-align: center; }
  .tpl-grid.snap-m { grid-auto-columns: 80%; }
  .filters { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; margin-inline: -14px; padding: 2px 14px 10px; scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .chip { flex: none; min-height: 42px; }
  .gallery-toolbar { gap: 12px; }
  .gallery-toolbar > * { width: 100%; }
  .tabs-nav { display: grid; grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: 72%; overflow-x: auto; scroll-snap-type: x mandatory; margin-inline: -14px; padding: 2px 14px 12px; scrollbar-width: none; }
  .tabs-nav::-webkit-scrollbar { display: none; }
  .tabs-nav button { scroll-snap-align: center; }
  .est-result { position: static; }
  .footer-bottom { flex-direction: column; }
  .site-footer { padding-top: 52px; }
}
@media (hover: none) {
  .tpl-thumb .overlay { display: none; }
  .card:hover, .tpl-card:hover, .btn:hover { transform: none; }
  .btn:active { transform: scale(.97); }
}