/* =========================================================================
   TKT PUMPS · COMPONENT LIBRARY
   All re-usable UI classes. Import AFTER tokens.css + base.css.
   ========================================================================= */

/* =========================================================================
   GLASS — signature primitive
   USE ON: nav, modal, mega menu, hero badge, key stat, CTA card.
   DO NOT USE ON: paragraphs, dense lists, table cells, dense content.
   ========================================================================= */
.glass {
  position: relative;
  background: var(--glass-fill);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid var(--glass-stroke);
  border-radius: var(--r-24);
  box-shadow: var(--elev-glass);
}
.glass-hi   { background: var(--glass-fill-hi);   box-shadow: var(--elev-glass-hi); }
.glass-tint { background: var(--glass-fill-tint); }
.glass-pill { border-radius: var(--r-pill); }

/* Top specular highlight (use as ::before via composition if needed) */
.glass-spec::before {
  content: ""; position: absolute;
  top: 0; left: 12%; right: 12%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-spec), transparent);
  pointer-events: none;
}

/* Dark surface glass (inside footer / dark hero) */
.glass-dark {
  background: var(--glass-dark-fill);
  border: 1px solid var(--glass-dark-stroke);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-radius: var(--r-20);
}

/* =========================================================================
   BUTTONS — theo "Thư viện thành phần" của TKT Design System 2.1 (Claude Design).
   Cao cố định 48 · 40 · 32, bo 12 · 10 · 8; icon vuông cùng kích thước;
   999px chỉ cho tag/chip/header capsule. 1 .btn-primary / viewport.
   Hover = màu lấp từ đáy (background-size 0 → 170%, --dur-fill, --ease-fill).
   ========================================================================= */
.btn {
  --btn-h: 40px; --btn-px: 18px; --btn-r: 10px; --btn-fs: 13px; --btn-ic: 22px; --btn-ri: 7px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--btn-h); padding: 1px var(--btn-px) 0;
  font-family: var(--font-display); font-size: var(--btn-fs); font-weight: var(--w-bold);
  letter-spacing: .01em; line-height: 1; white-space: nowrap; text-decoration: none;
  border: 0; border-radius: var(--btn-r); cursor: pointer;
  background-repeat: no-repeat; background-position: bottom; background-size: 100% 0%;
  transition: background-size var(--dur-fill) var(--ease-fill), color 400ms var(--ease-fill),
    border-color var(--dur-3) var(--ease-out), background-color var(--dur-3) var(--ease-out);
}
.btn-lg { --btn-h: 48px; --btn-px: 22px; --btn-r: var(--r-12); --btn-fs: 14px; --btn-ic: 26px; --btn-ri: var(--r-8); }
.btn-md { --btn-h: 40px; --btn-px: 18px; --btn-r: 10px; --btn-fs: 13px; --btn-ic: 22px; --btn-ri: 7px; }
.btn-sm { --btn-h: 32px; --btn-px: 14px; --btn-r: var(--r-8); --btn-fs: 12px; --btn-ic: 18px; --btn-ri: 6px; }

.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.4; cursor: not-allowed; }
.btn:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 2px; }

/* PRIMARY · xanh, lấp cam từ đáy, chữ đổi ink. Ô mũi tên bên phải: .btn__icon */
.btn-primary {
  background-color: var(--tkt-blue-600); color: var(--fg-on-dark-1);
  background-image: linear-gradient(0deg, var(--tkt-orange-500) 0%, var(--tkt-orange-500) 60%, transparent 100%);
  padding-right: calc(var(--btn-px) / 2);
}
.btn-primary:not(:has(.btn__icon)) { padding-right: var(--btn-px); }
.btn-primary:hover, .btn-primary:focus-visible { background-size: 100% 170%; color: var(--fg-1); }
.btn__icon { width: var(--btn-ic); height: var(--btn-ic); border-radius: var(--btn-ri); background: rgba(255,255,255,.18);
  display: grid; place-items: center; }
.btn__icon svg { width: 14px; height: 14px; }

/* ACCENT · cam chữ ink, lấp cam nhạt (#FFB255) */
.btn-accent {
  background-color: var(--tkt-orange-500); color: var(--fg-1);
  background-image: linear-gradient(0deg, var(--tkt-orange-300) 0%, var(--tkt-orange-300) 60%, transparent 100%);
}
.btn-accent:hover, .btn-accent:focus-visible { background-size: 100% 170%; }

/* SECONDARY · trắng viền xanh 1.5px, lấp xanh nhạt */
.btn-secondary {
  background-color: var(--bg-pure); color: var(--tkt-blue-600); border: 1.5px solid var(--tkt-blue-600);
  background-image: linear-gradient(0deg, var(--tkt-blue-050) 0%, var(--tkt-blue-050) 60%, transparent 100%);
}
.btn-secondary:hover, .btn-secondary:focus-visible { background-size: 100% 170%; }

/* ICON · vuông cùng kích thước nút; mặc định viền, .is-solid = nền xanh (hover cam, icon ink) */
.btn-icon { width: var(--btn-h); padding: 0; background: var(--bg-pure); color: var(--tkt-blue-600); border: 1.5px solid var(--line-input); }
.btn-icon:hover, .btn-icon:focus-visible { border-color: var(--tkt-blue-600); background: var(--tkt-blue-050); }
.btn-icon.is-solid { background: var(--tkt-blue-600); color: var(--fg-on-dark-1); border: 0; }
.btn-icon.is-solid:hover, .btn-icon.is-solid:focus-visible { background: var(--tkt-orange-500); color: var(--fg-1); }
.btn-icon svg { width: 16px; height: 16px; }

/* TRÊN NỀN ẢNH · kính sáng (lớp nổi) + mũi tên cam */
.btn-glass {
  color: var(--tkt-blue-600); background: var(--glass-fill); border: 1px solid var(--glass-spec);
  backdrop-filter: blur(18px) saturate(1.7); -webkit-backdrop-filter: blur(18px) saturate(1.7);
  box-shadow: 0 12px 28px -16px rgba(10,35,70,.35);
}
.btn-glass:hover, .btn-glass:focus-visible { background: rgba(255,255,255,.9); }
.btn-glass .btn__arrow, .btn-tertiary .btn__arrow { color: var(--tkt-orange-500); display: inline-flex; }

/* TEXT LINK · chữ xanh + mũi tên cam */
.btn-tertiary { background: transparent; color: var(--tkt-blue-600); padding-left: 4px; padding-right: 4px; }
.btn-tertiary:hover .btn__arrow { transform: translateX(3px); }
.btn__arrow { transition: transform var(--dur-2) var(--ease-out); }

/* On dark surface */
.btn-secondary.on-dark {
  background: var(--glass-dark-fill);
  border: 1px solid var(--glass-dark-stroke);
  color: var(--fg-on-dark-1);
}

/* =========================================================================
   CHIPS / BADGES / TAGS
   ========================================================================= */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  font-weight: var(--w-bold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  background: rgba(0,40,80,0.06);
  color: var(--fg-2);
  border: 1px solid rgba(0,40,80,0.08);
  white-space: nowrap;
}
.chip.ok    { background: var(--semantic-success-bg); color: var(--semantic-success); border-color: rgba(34,134,87,0.18); }
.chip.warn  { background: var(--semantic-warn-bg);    color: var(--semantic-warn);    border-color: rgba(180,83,9,0.18); }
.chip.crit  { background: var(--semantic-danger-bg);  color: var(--semantic-danger);  border-color: rgba(184,52,71,0.18); }
.chip.info  { background: var(--semantic-info-bg);    color: var(--semantic-info);    border-color: rgba(0,80,144,0.18); }
.chip.solid { background: var(--tkt-orange-600); color: #fff; border-color: transparent; }
.chip.dark  { background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.14); }

/* Eyebrow row — eyebrow text with bullet + optional num */
.eyebrow-row {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  font-weight: var(--w-bold);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--tkt-blue-600);
}
.eyebrow-row .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--tkt-blue-500); }

/* =========================================================================
   INPUT / FORM FIELDS
   ========================================================================= */
.field {
  display: flex; align-items: center; gap: 8px;
  padding: 0 6px 0 16px;
  background: var(--bg-pure);
  border: 1px solid rgba(0,40,80,0.12);
  border-radius: var(--r-pill);
  height: 48px;
  transition: border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out);
}
.field:focus-within {
  border-color: var(--tkt-blue-500);
  box-shadow: 0 0 0 4px rgba(45,141,224,0.18);
  outline: none;
}
.field input,
.field textarea,
.field select {
  flex: 1; min-width: 0;
  background: transparent;
  border: none; outline: none;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-1);
}
.field input::placeholder { color: var(--fg-4); }
.field.dark {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.14);
}
.field.dark input { color: #fff; }
.field.dark input::placeholder { color: rgba(255,255,255,0.4); }

/* Textarea variant */
.field-area {
  align-items: stretch;
  height: auto;
  padding: 12px 16px;
  border-radius: var(--r-16);
}
.field-area textarea {
  min-height: 100px; resize: vertical;
}

/* =========================================================================
   CARD
   ========================================================================= */
.card {
  background: var(--bg-pure);
  border: 1px solid rgba(0,40,80,0.08);
  border-radius: var(--r-20);
  padding: var(--s-6);
  transition: box-shadow var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}
.card.elev-2 { box-shadow: var(--elev-2); border-color: transparent; }
.card.elev-3 { box-shadow: var(--elev-3); border-color: transparent; }
.card:hover.interactive { transform: translateY(-2px); box-shadow: var(--elev-3); }

/* =========================================================================
   LANGUAGE SWITCHER
   ========================================================================= */
.lang-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(0,40,80,0.10);
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: var(--w-bold);
  color: var(--fg-1);
  letter-spacing: 0.04em;
  cursor: pointer;
  white-space: nowrap;
}
.lang-chip .active { color: var(--tkt-blue-700); }
.lang-chip .sep { color: var(--fg-4); }

/* =========================================================================
   HEADER · UTILITY STRIP
   Top thin dark bar with hotline / email / status / locale links.
   ========================================================================= */
.util-strip {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 28px;
  height: var(--h-util);
  font-family: var(--font-display);
  font-size: 12px;
  color: rgba(255,255,255,0.86);
  background: linear-gradient(90deg, var(--tkt-blue-900) 0%, var(--tkt-blue-800) 60%, var(--tkt-blue-700) 100%);
  letter-spacing: 0.01em;
}
.util-strip .group { display: flex; align-items: center; gap: 22px; }
.util-strip a {
  color: inherit; text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.util-strip a:hover { color: #fff; }
.util-strip .live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #4ADE80; box-shadow: 0 0 8px #4ADE80;
  display: inline-block;
}
.util-strip .sep {
  width: 1px; height: 12px;
  background: rgba(255,255,255,0.18);
}

/* =========================================================================
   HEADER · MAIN NAV
   PATTERN B (approved): full-width glass bar with mega menu support.
   ========================================================================= */
.nav-bar {
  position: sticky; top: 0; z-index: var(--z-sticky);
  background: rgba(255,255,255,0.72);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid rgba(0,40,80,0.08);
  box-shadow: 0 8px 24px rgba(0,40,80,0.06);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  height: var(--h-nav);
  padding: 0 var(--container-pad-desktop);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav-brand {
  display: flex; align-items: center; gap: 12px;
  min-width: 0; text-decoration: none;
}
.nav-brand img { height: 30px; flex-shrink: 0; }
.nav-brand .lockup {
  display: flex; flex-direction: column; line-height: 1;
}
.nav-brand .lockup .name {
  font-family: var(--font-display); font-weight: var(--w-bold);
  font-size: 15px; color: var(--tkt-blue-800);
  letter-spacing: 0.04em;
}
.nav-brand .lockup .sub {
  font-family: var(--font-display); font-weight: var(--w-demi);
  font-size: 10px; color: var(--fg-3);
  letter-spacing: 0.16em; margin-top: 3px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex; align-items: center; gap: 4px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: var(--w-demi);
  color: var(--fg-1);
}
.nav-item {
  position: relative;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  white-space: nowrap;
  transition: background var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out);
  text-decoration: none;
  color: inherit;
}
.nav-item:hover { background: rgba(255,255,255,0.55); color: var(--tkt-blue-700); }
.nav-item.active { background: rgba(0,80,144,0.08); color: var(--tkt-blue-700); }
.nav-item .caret { font-size: 10px; opacity: 0.55; transform: translateY(1px); }
.nav-item .nav-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: var(--w-bold);
  background: var(--tkt-orange-600);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--r-pill);
  letter-spacing: 0.04em;
  margin-left: 4px;
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

/* =========================================================================
   MEGA MENU — opens under a .nav-item.has-mega
   Approved structure: 3 link cols + 1 feature card.
   ========================================================================= */
.has-mega { position: relative; }
.has-mega:hover > .mega,
.has-mega:focus-within > .mega { display: grid; }

.mega {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  width: 880px;
  padding: 24px;
  border-radius: var(--r-24);
  background: rgba(255,255,255,0.82);
  -webkit-backdrop-filter: blur(36px) saturate(190%);
  backdrop-filter: blur(36px) saturate(190%);
  border: 1px solid rgba(255,255,255,0.95);
  box-shadow: var(--elev-glass-hi);
  grid-template-columns: 1fr 1fr 1fr 1.1fr;
  gap: 28px;
  z-index: var(--z-overlay);
  animation: mega-in var(--dur-3) var(--ease-out) both;
}
@keyframes mega-in {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.mega::before {
  content: ""; position: absolute;
  top: -7px; left: 50%; transform: translateX(-50%) rotate(45deg);
  width: 14px; height: 14px;
  background: rgba(255,255,255,0.95);
  border-left: 1px solid rgba(255,255,255,0.95);
  border-top: 1px solid rgba(255,255,255,0.95);
}
.mega-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: var(--w-bold);
  letter-spacing: 0.18em;
  color: var(--tkt-blue-600);
  margin: 0 0 12px;
  text-transform: uppercase;
}
.mega-col ul {
  display: flex; flex-direction: column; gap: 4px;
}
.mega-col li > a {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-12);
  font-size: 13.5px;
  font-weight: var(--w-demi);
  color: var(--fg-1);
  text-decoration: none;
  transition: background var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}
.mega-col li > a:hover { background: rgba(0,80,144,0.06); color: var(--tkt-blue-700); }
.mega-col li .meta {
  font-size: 11px; color: var(--fg-3);
  font-weight: var(--w-medium); margin-left: auto;
}
.mega-feature {
  position: relative; overflow: hidden;
  border-radius: var(--r-16);
  padding: 18px;
  background: linear-gradient(160deg, rgba(168,210,247,0.55) 0%, rgba(255,200,140,0.35) 100%);
  border: 1px solid rgba(255,255,255,0.9);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.95);
}
.mega-feature::before {
  content: ""; position: absolute; top: -40px; right: -40px;
  width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(91,174,245,0.5), transparent 70%);
  filter: blur(20px);
}
.mega-feature > * { position: relative; }
.mega-feature .label {
  font-family: var(--font-mono); font-size: 10px;
  font-weight: var(--w-bold); letter-spacing: 0.18em;
  color: var(--tkt-orange-600); text-transform: uppercase;
}
.mega-feature .title { font-size: 17px; font-weight: var(--w-bold); line-height: 1.2; margin-top: 10px; color: var(--fg-1); }
.mega-feature .desc  { font-size: 12.5px; color: var(--fg-2); margin-top: 8px; line-height: 1.5; }
.mega-feature .cta   {
  margin-top: 14px; font-size: 12.5px; font-weight: var(--w-bold);
  color: var(--tkt-blue-700);
  display: inline-flex; gap: 6px; align-items: center;
  border-bottom: 1.5px solid var(--tkt-blue-600);
  width: fit-content;
}

/* =========================================================================
   FOOTER · DARK (approved primary variant)
   ========================================================================= */
.footer {
  position: relative;
  color: var(--fg-on-dark-2);
  background: var(--bg-dark);
  overflow: hidden;
}
.footer-inner {
  position: relative; z-index: 1;
  padding: 64px 48px 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
  gap: 48px;
}
@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; padding: 48px 32px 24px; }
}
@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; padding: 40px 20px 20px; }
}

.footer h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: var(--w-bold);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--tkt-blue-300);
  margin: 0 0 18px;
}
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul a {
  color: rgba(255,255,255,0.78);
  text-decoration: none;
  font-size: 14px;
  font-weight: var(--w-medium);
  display: inline-flex; align-items: center; gap: 8px;
  transition: color var(--dur-1) var(--ease-out);
}
.footer ul a:hover { color: #fff; }
.footer ul a .new {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: var(--w-bold);
  background: var(--tkt-orange-600);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--r-pill);
  letter-spacing: 0.04em;
}

.footer-brand .name-lg {
  font-family: var(--font-display);
  font-weight: var(--w-bold);
  font-size: 22px;
  color: #fff;
  letter-spacing: 0.04em;
}
.footer-brand .tagline {
  font-size: 14px; line-height: 1.55;
  color: rgba(255,255,255,0.7);
  margin: 12px 0 0; max-width: 360px;
}

.footer-contact {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--glass-dark-fill);
  border: 1px solid var(--glass-dark-stroke);
  border-radius: var(--r-20);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
.footer-contact .row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.footer-contact .row:last-child { margin-bottom: 0; }
.footer-contact .icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(45,141,224,0.18);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--tkt-blue-300);
  flex-shrink: 0;
}
.footer-contact .label {
  font-size: 11px; color: rgba(255,255,255,0.5);
  font-weight: var(--w-demi); letter-spacing: 0.12em; text-transform: uppercase;
}
.footer-contact .value { font-size: 14px; color: #fff; font-weight: var(--w-demi); }

.footer-newsletter h5 { color: var(--tkt-orange-500); }
.footer-newsletter p {
  font-size: 13.5px; color: rgba(255,255,255,0.7);
  line-height: 1.55; margin: 0 0 14px; max-width: 280px;
}
.footer-newsletter .field {
  padding: 5px 5px 5px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  height: 46px;
}
.footer-newsletter .field input { color: #fff; }
.footer-newsletter .field input::placeholder { color: rgba(255,255,255,0.45); }

.footer-cert-row {
  margin-top: 18px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.footer-cert {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: var(--w-bold);
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.85);
}

.footer-social {
  margin-top: 22px;
  display: flex; gap: 10px;
}
.footer-social a {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.85);
  transition: background var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out);
  text-decoration: none;
}
.footer-social a:hover { background: rgba(255,255,255,0.16); color: #fff; }

.footer-legal {
  position: relative; z-index: 1;
  border-top: 1px solid rgba(255,255,255,0.10);
  padding: 22px 48px;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.5);
}
.footer-legal a { color: inherit; text-decoration: none; }
.footer-legal a:hover { color: #fff; }
.footer-legal .links { display: flex; gap: 22px; align-items: center; }
.footer-legal .ministry {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.12em; color: rgba(255,255,255,0.4);
  font-weight: var(--w-demi);
}

/* =========================================================================
   MOBILE NAV (<= 1024px collapses .nav-menu → hamburger drawer)
   Header pattern: pill nav with logo + search + menu button.
   ========================================================================= */
@media (max-width: 1024px) {
  .nav-menu, .nav-actions .nav-desktop-only { display: none; }
  .nav-mobile-only { display: inline-flex; }
  .nav-bar { padding: 0; }
  .nav-inner { padding: 0 20px; height: 64px; }
}
@media (min-width: 1025px) {
  .nav-mobile-only { display: none; }
}

.mobile-drawer {
  position: fixed; inset: 0; z-index: var(--z-modal);
  background: rgba(0,26,61,0.4);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: none;
}
.mobile-drawer[data-open="true"] { display: block; }
.mobile-drawer-panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(420px, 90vw);
  background: var(--bg-pure);
  box-shadow: -20px 0 60px -10px rgba(0,40,80,0.30);
  display: flex; flex-direction: column;
  animation: drawer-in var(--dur-3) var(--ease-out) both;
}
@keyframes drawer-in {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
.mobile-drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(0,40,80,0.08);
}
.mobile-drawer-body {
  flex: 1; overflow-y: auto;
  padding: 16px 8px;
}
.mobile-drawer-body .nav-item {
  display: flex; padding: 14px 16px;
  font-size: 16px;
  border-radius: var(--r-12);
}
.mobile-drawer-foot {
  padding: 18px 20px;
  border-top: 1px solid rgba(0,40,80,0.08);
  display: flex; flex-direction: column; gap: 10px;
}

/* =========================================================================
   STAT STRIP — glass row showing 4-5 key metrics
   ========================================================================= */
.stat-strip {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 16px 24px;
  background: var(--glass-fill-hi);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-stroke);
  border-radius: var(--r-20);
  box-shadow: var(--elev-glass);
}
.stat-strip .stat { text-align: center; flex: 1; }
.stat-strip .stat .num {
  font-family: var(--font-display); font-weight: var(--w-bold);
  font-size: 28px; color: var(--tkt-blue-700);
  letter-spacing: -0.02em; line-height: 1;
}
.stat-strip .stat .num sup { font-size: 16px; font-weight: var(--w-demi); color: var(--fg-3); margin-left: 2px; }
.stat-strip .stat .label {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--fg-3); font-weight: var(--w-demi);
  margin-top: 6px;
}
.stat-strip .divider { width: 1px; height: 32px; background: rgba(0,40,80,0.12); }

/* =========================================================================
   ICON — sizing convention (24px line icons, stroke 1.6)
   ========================================================================= */
.icon { width: 24px; height: 24px; display: inline-block; flex-shrink: 0; }
.icon-sm { width: 16px; height: 16px; }
.icon-md { width: 20px; height: 20px; }
.icon-lg { width: 28px; height: 28px; }

/* =========================================================================
   DS 2.1 · THƯ VIỆN THÀNH PHẦN — chuyển 1:1 từ trang "TKT Design System 2.1"
   (Claude Design · Code Library). Tên class tránh -card/-chip/-badge/-pill
   (Elementor Kit có selector đè): Tabs → .seg-tabs · Chips → .choice-tag ·
   Badges → .label-tag · Form → .field-box · Cards → .product-tile /
   .category-tile / .stat-panel / .step-list · Header capsule → .nav-capsule ·
   Floating dock → .contact-dock
   ========================================================================= */

/* ---------- Tabs (phân đoạn) ---------- */
.seg-tabs { display: inline-flex; gap: 4px; padding: 4px; border-radius: var(--r-pill); background: rgba(0,79,159,.06); }
.seg-tabs__item { white-space: nowrap; border: 0; border-radius: var(--r-pill); padding: 8px 16px; font: var(--w-bold) 13px/1.2 var(--font-display);
  background: transparent; color: var(--fg-2); cursor: pointer;
  transition: background-color var(--dur-3) var(--ease-out), color var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out); }
.seg-tabs__item[aria-selected="true"], .seg-tabs__item.is-active { background: var(--bg-pure); color: var(--tkt-blue-600); box-shadow: 0 6px 14px -8px rgba(0,79,159,.55); }

/* ---------- Chips (lựa chọn) — .has-dot = bản trong form (cao 36, chấm trạng thái) ---------- */
.choice-tag { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; padding: 8px 14px; border-radius: var(--r-pill);
  border: 1.5px solid var(--line); background: var(--bg-pure); color: var(--fg-1); font: var(--w-bold) 13px/1.2 var(--font-display); cursor: pointer;
  transition: background-color var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out); }
.choice-tag[aria-pressed="true"], .choice-tag.is-active { border-color: var(--tkt-blue-600); background: var(--tkt-blue-600); color: var(--fg-on-dark-1); }
.choice-tag.has-dot { height: 36px; padding: 0 14px; }
.choice-tag.has-dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--tkt-blue-200); }
.choice-tag.has-dot[aria-pressed="true"]::before, .choice-tag.has-dot.is-active::before { background: var(--tkt-orange-500); }

/* ---------- Badges (nhãn tĩnh, không bấm) ---------- */
.label-tag { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; padding: 6px 10px; border-radius: var(--r-pill);
  font: var(--w-bold) 13px/1.2 var(--font-display); color: var(--tkt-blue-600); background: var(--tkt-blue-050); }
.label-tag--deal { background: var(--tkt-orange-500); color: var(--fg-1); }
.label-tag--brand { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; background: rgba(255,255,255,.7); border: 1px solid var(--line); }
.label-tag--status { padding: 0; background: none; color: var(--fg-1); }
.label-tag--status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--semantic-success-dot); }

/* ---------- Form — nhãn trong ô · cao 56 · focus quầng 4px ---------- */
.field-box { position: relative; display: flex; flex-direction: column; justify-content: center; gap: 2px; height: 56px; padding: 0 14px;
  border-radius: var(--r-12); background: var(--bg-pure); border: 1.5px solid var(--line);
  transition: border-color var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out); }
.field-box__label { font: var(--w-bold) 11px/1.2 var(--font-display); letter-spacing: .04em; color: var(--fg-caption); transition: color var(--dur-3) var(--ease-out); }
.field-box input, .field-box select, .field-box textarea { border: 0; outline: none; background: transparent; padding: 0; width: 100%;
  font: var(--w-book) 16px/1.3 var(--font-body); color: var(--fg-1); appearance: none; -webkit-appearance: none; }
.field-box:focus-within { border-color: var(--tkt-blue-600); box-shadow: 0 0 0 4px rgba(0,79,159,.12); }
.field-box:focus-within .field-box__label { color: var(--tkt-blue-600); }
.field-box--select { padding-right: 40px; }
.field-box--select::after { content: "▼"; position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-size: 10px; color: var(--tkt-orange-500); pointer-events: none; }
.field-box.is-error { border-color: var(--semantic-danger-line); }
.form-panel { display: flex; flex-direction: column; gap: 10px; padding: 18px; border-radius: var(--r-20); background: rgba(255,255,255,.7);
  border: 1px solid var(--glass-stroke); box-shadow: 0 24px 48px -32px rgba(0,79,159,.45);
  backdrop-filter: blur(18px) saturate(1.6); -webkit-backdrop-filter: blur(18px) saturate(1.6); }
.form-panel__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 519px) { .form-panel__grid { grid-template-columns: 1fr; } }
.form-panel__note { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--fg-caption); }
.form-panel__note::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--semantic-success-dot); }
.btn-block { width: 100%; justify-content: space-between; }

/* ---------- Cards · Sản phẩm (lấp xanh nhạt từ đáy + nhấc 4px) ---------- */
.product-tile { display: flex; flex-direction: column; gap: 14px; padding: 10px 10px 16px; border-radius: var(--r-24); color: var(--fg-1); text-decoration: none;
  background-color: var(--bg-pure); border: 1px solid var(--line-soft); box-shadow: 0 20px 40px -28px rgba(0,79,159,.55);
  background-image: linear-gradient(0deg, var(--tkt-blue-050) 0%, var(--tkt-blue-050) 60%, transparent 100%);
  background-repeat: no-repeat; background-position: bottom; background-size: 100% 0%;
  transition: background-size var(--dur-fill) var(--ease-fill), transform 350ms var(--ease-out); }
.product-tile:hover, .product-tile:focus-visible { background-size: 100% 170%; transform: translateY(-4px); color: var(--fg-1); }
.product-tile__media { position: relative; height: 170px; border-radius: 18px; overflow: hidden; background: linear-gradient(160deg, var(--bg-canvas), var(--tkt-blue-100)); }
.product-tile__media img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.product-tile__media .label-tag { position: absolute; top: 10px; }
.product-tile__media .label-tag--brand { left: 10px; background: rgba(255,255,255,.75); border: 0; }
.product-tile__media .label-tag--deal { right: 10px; }
.product-tile__name { padding: 0 6px; font: var(--w-bold) 16px/1.4 var(--font-display); }
.product-tile__foot { display: flex; justify-content: space-between; align-items: center; padding: 0 6px; font-size: 13px; color: var(--fg-caption); }
.tile-arrow { width: 30px; height: 30px; flex: none; border-radius: 50%; display: grid; place-items: center; background: var(--tkt-orange-500); color: var(--fg-1); }
.tile-arrow svg { width: 14px; height: 14px; }

/* ---------- Cards · Danh mục ---------- */
.category-tile { display: flex; flex-direction: column; gap: 12px; padding: 8px 8px 14px; border-radius: var(--r-20); color: var(--fg-1); text-decoration: none;
  background-color: var(--bg-media); background-image: linear-gradient(0deg, var(--tkt-blue-100) 0%, var(--tkt-blue-100) 60%, transparent 100%);
  background-repeat: no-repeat; background-position: bottom; background-size: 100% 0%;
  transition: background-size var(--dur-fill) var(--ease-fill), transform 350ms var(--ease-out), color 400ms var(--ease-fill); }
.category-tile:hover, .category-tile:focus-visible { background-size: 100% 170%; transform: translateY(-4px); color: var(--tkt-blue-600); }
.category-tile__media { height: 120px; border-radius: 14px; overflow: hidden; background: var(--bg-pure); }
.category-tile__foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 0 6px; font: var(--w-bold) 15px/1.3 var(--font-display); }
.category-tile .tile-arrow { width: 26px; height: 26px; background: var(--bg-pure); color: var(--tkt-orange-500); }

/* ---------- Cards · Chỉ số kính (chỉ dùng số LOCKED: 19+ · 12k+ · 28+ · 5k+ · 24/7) ---------- */
.stat-panel { display: flex; flex-direction: column; gap: 10px; padding: 16px; border-radius: var(--r-24); background: linear-gradient(135deg, var(--tkt-blue-100), var(--bg-canvas)); }
.stat-block { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: var(--r-20); background: var(--glass-fill); border: 1px solid var(--glass-stroke);
  box-shadow: 0 20px 40px -28px rgba(0,79,159,.4); backdrop-filter: blur(22px) saturate(1.7); -webkit-backdrop-filter: blur(22px) saturate(1.7); }
.stat-block__icon { width: 46px; height: 46px; flex: none; border-radius: 14px; background: var(--bg-pure); display: grid; place-items: center; color: var(--tkt-blue-600); font: var(--w-bold) 13px/1 var(--font-display); }
.stat-block__value { display: block; font: var(--w-bold) 26px/1.1 var(--font-display); color: var(--tkt-blue-600); font-variant-numeric: tabular-nums; }
.stat-block__label { font: var(--w-bold) 11px/1.3 var(--font-display); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); }
.stat-block--center { flex-direction: column; gap: 2px; padding: 14px; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.stat-block--center .stat-block__value { font-size: 30px; color: var(--tkt-orange-500); }

/* ---------- Cards · Quy trình ---------- */
.step-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.step-item { display: flex; gap: 14px; align-items: center; padding: 14px 16px; border-radius: 18px; background: var(--bg-pure); border: 1px solid var(--line);
  font: var(--w-bold) 15px/1.3 var(--font-display); transition: border-color var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-out); }
.step-item:hover { border-color: var(--tkt-blue-600); transform: translateX(4px); }
.step-item__n { width: 40px; height: 40px; flex: none; border-radius: 50%; display: grid; place-items: center; font-size: 13px; background: var(--tkt-blue-600); color: var(--fg-on-dark-1); }
.step-item.is-highlight .step-item__n { background: var(--tkt-orange-500); color: var(--fg-1); }

/* ---------- Header capsule — mọi phần tử cao 40 trong capsule 60; viên trắng trượt 600ms; kính 70% → 86% khi cuộn ---------- */
.nav-capsule { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 10px; height: 60px; padding: 0 10px 0 16px;
  border-radius: var(--r-pill); background: rgba(255,255,255,.7); border: 1px solid var(--glass-stroke); box-shadow: 0 14px 34px -24px rgba(0,79,159,.5);
  backdrop-filter: blur(24px) saturate(1.8); -webkit-backdrop-filter: blur(24px) saturate(1.8); transition: background-color var(--dur-3) var(--ease-out); }
.nav-capsule.is-scrolled { background: rgba(255,255,255,.86); }
.nav-capsule__logo { height: 34px; width: auto; }
.nav-capsule__menu { position: relative; justify-self: center; max-width: 100%; min-width: 0; display: flex; height: 40px; padding: 4px; border-radius: var(--r-pill); background: rgba(0,79,159,.06); overflow: hidden; }
.nav-capsule__indicator { position: absolute; top: 4px; bottom: 4px; left: 4px; width: 0; border-radius: var(--r-pill); background: var(--bg-pure);
  box-shadow: 0 8px 18px -10px rgba(0,79,159,.55); opacity: 0; pointer-events: none;
  transition: left 600ms var(--ease-fill), width 600ms var(--ease-fill), opacity 350ms var(--ease-out); }
.nav-capsule__item { position: relative; display: flex; align-items: center; height: 32px; padding: 0 12px; font-size: 13px; white-space: nowrap; color: var(--fg-1); text-decoration: none; }
.nav-capsule__item.is-active { background: var(--bg-pure); border-radius: var(--r-pill); color: var(--tkt-blue-600); }
.nav-capsule__tools { display: flex; align-items: center; gap: 6px; }
.nav-capsule__tool { position: relative; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--tkt-blue-050); color: var(--tkt-blue-600); font: var(--w-bold) 11px/1 var(--font-display); }
.nav-capsule__tool--outline { background: var(--bg-pure); border: 1px solid var(--line); }
.nav-capsule__tool .online-dot { position: absolute; top: 2px; right: 2px; width: 9px; height: 9px; border-radius: 50%; background: var(--semantic-success-dot); border: 2px solid var(--bg-pure); }

/* ---------- Floating dock — Hotline (cam) + Zalo (xanh) bám mép phải · Bot góc dưới · không chữ ---------- */
.contact-dock { position: fixed; right: 0; top: 40%; z-index: var(--z-sticky); display: flex; flex-direction: column; gap: 6px; padding: 6px; border-radius: 20px 0 0 20px;
  background: rgba(255,255,255,.7); border: 1px solid var(--glass-stroke); box-shadow: 0 20px 40px -18px rgba(10,35,70,.4); }
.contact-dock__btn { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; color: var(--fg-on-dark-1); }
.contact-dock__btn--hotline { background: linear-gradient(160deg, var(--tkt-orange-400), var(--tkt-orange-600)); color: var(--fg-1); }
.contact-dock__btn--zalo { background: linear-gradient(160deg, var(--tkt-blue-400), var(--tkt-blue-600)); }
.contact-dock__zalo { width: 26px; height: 26px; border-radius: var(--r-8); background: var(--bg-pure); color: var(--tkt-blue-600); display: grid; place-items: center; font: var(--w-bold) 9px/1 var(--font-display); }
.bot-launcher { position: fixed; right: var(--s-5); bottom: var(--s-5); z-index: var(--z-sticky); width: 56px; height: 56px; border-radius: 50%; border: 3px solid var(--bg-pure);
  background: linear-gradient(160deg, var(--tkt-blue-400), var(--tkt-blue-600)); display: grid; place-items: center; box-shadow: 0 18px 36px -14px rgba(0,79,159,.6); }
.bot-launcher__face { width: 30px; height: 20px; margin-top: 4px; border-radius: var(--r-8); background: var(--bg-pure); display: flex; align-items: center; justify-content: center; gap: 6px; }
.bot-launcher__face::before, .bot-launcher__face::after { content: ""; width: 4px; height: 7px; border-radius: 2px; background: var(--tkt-blue-600); }
.bot-launcher .online-dot { position: absolute; top: -2px; right: -2px; width: 13px; height: 13px; border-radius: 50%; background: var(--semantic-success-dot); border: 2px solid var(--bg-pure); }

/* =========================================================================
   DS 2.1 · BỔ SUNG T4 (03/10/2026) — khối trang chủ/hub còn thiếu khi chuyển trang Elementor sang template theme.
   Partial tương ứng: backend/tkt-theme/components/*.php (design-map.json). Luật: CLAUDE.md §0 (token), §6 (lưới chia đều).
   ========================================================================= */

/* Ẩn khỏi màn hình, giữ cho trình đọc màn hình */
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* Lưới chia đều cố định (không auto-fit): 4/2/1 · 3/3/1 · 2/2/1 */
.tile-grid { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tile-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tile-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 1024px) { .tile-grid, .tile-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .tile-grid, .tile-grid--3, .tile-grid--2 { grid-template-columns: minmax(0, 1fr); } }

/* Dải logo hãng / khách hàng: khung trắng viền mảnh, logo xám → màu khi trỏ */
.logo-strip { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; grid-template-columns: repeat(6, minmax(0, 1fr)); }
@media (max-width: 1024px) { .logo-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .logo-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.logo-strip__item { display: flex; align-items: center; justify-content: center; height: 72px; padding: 12px; border-radius: var(--r-16); background: var(--bg-pure);
  box-shadow: var(--elev-1); transition: box-shadow var(--dur-2) var(--ease-out); }
.logo-strip__item img { max-width: 100%; max-height: 44px; width: auto; height: auto; object-fit: contain; filter: grayscale(1); opacity: .78;
  transition: filter var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out); }
a.logo-strip__item:hover, a.logo-strip__item:focus-visible { box-shadow: var(--elev-3); }
a.logo-strip__item:hover img, a.logo-strip__item:focus-visible img { filter: none; opacity: 1; }

/* FAQ dạng accordion (details/summary); schema FAQ thuộc plugin tkt-seo, không in ở đây */
.faq-block { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.faq-block__item { border-bottom: 1px solid var(--line); }
.faq-block__item summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; cursor: pointer; list-style: none; color: var(--fg-1); }
.faq-block__item summary::-webkit-details-marker { display: none; }
.faq-block__item summary::after { content: ""; flex: 0 0 auto; width: 10px; height: 10px; border-right: 2px solid var(--tkt-blue-600); border-bottom: 2px solid var(--tkt-blue-600);
  transform: translateY(-3px) rotate(45deg); transition: transform var(--dur-2) var(--ease-out); }
.faq-block__item[open] summary::after { transform: translateY(2px) rotate(-135deg); }
.faq-block__item summary:focus-visible { outline: 2px solid var(--tkt-blue-600); outline-offset: 4px; border-radius: var(--r-12); }
.faq-block__answer { padding: 0 0 18px; color: var(--fg-2); }

/* Breadcrumb */
.crumb-trail { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; color: var(--fg-caption); }
.crumb-trail li + li::before { content: "›"; margin-right: 6px; color: var(--fg-4); }
.crumb-trail a { color: var(--fg-3); text-decoration: none; }
.crumb-trail a:hover { color: var(--tkt-blue-600); text-decoration: underline; }
.crumb-trail [aria-current="page"] { color: var(--fg-1); }

/* Dải CTA cuối trang: panel Mist, hàng nút xuống dòng trên mobile */
.cta-panel { padding: 32px; border-radius: var(--r-24); background: linear-gradient(135deg, var(--tkt-blue-050), var(--bg-canvas)); box-shadow: var(--elev-1); }
.cta-panel .row { flex-wrap: wrap; }
@media (max-width: 640px) { .cta-panel { padding: 24px 16px; } .cta-panel .row > .btn { flex: 1 1 100%; justify-content: center; } }

/* Chỉ số kính xếp ngang (4 ô), về 2×2 trên mobile */
.stat-panel--row { flex-direction: row; flex-wrap: wrap; }
.stat-panel--row > * { flex: 1 1 calc(25% - 10px); min-width: 0; }
@media (max-width: 640px) { .stat-panel--row > * { flex-basis: calc(50% - 5px); } }

/* =========================================================================
   DS 2.1 · BỔ SUNG TỪ CHỈNH SỬA CHỦ TRANG (03/10)
   Nguồn: frontend/design-handoff/{lien-he,request}/design/*-v2.html (bản chủ trang
   chỉnh trên Claude Design). Gộp các khối bị viết 2 lần với tiền tố trang
   (lien-he-* / request-*) thành 1 class dùng chung. Khi port: chỉ var(--*),
   bỏ !important, đổi -card → -panel/__sheet, vùng chạm ≥ 44px dưới 600px,
   tắt chuyển động khi prefers-reduced-motion. Bảng map tên v2 → DS:
   docs/reports/r3-qa/t4-design-v2-diff.md § "B1 — đã đưa vào thư viện".
   ========================================================================= */

/* ---------- Thẻ liên hệ nhanh (← lien-he-qt · request-ch) — lấp xanh nhạt từ đáy, mũi tên trượt 4px ---------- */
.contact-tile { position: relative; isolation: isolate; overflow: hidden; display: flex; align-items: center; gap: var(--s-4); min-height: 68px;
  padding: var(--s-3) var(--s-4); border-radius: var(--r-16); background: var(--bg-pure); box-shadow: var(--elev-1); color: var(--fg-1); text-decoration: none;
  transition: box-shadow var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-out); }
.contact-tile::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--tkt-blue-050); transform: translateY(101%);
  transition: transform var(--dur-4) var(--ease-fill); }
.contact-tile:hover, .contact-tile:focus-visible { color: var(--fg-1); box-shadow: var(--elev-1), var(--elev-3); transform: translateY(-2px); }
.contact-tile:hover::before, .contact-tile:focus-visible::before { transform: none; }
.contact-tile:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 2px; }
.contact-tile__icon { flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r-12); background: var(--tkt-blue-050); color: var(--tkt-blue-600);
  transition: background-color var(--dur-3) var(--ease-out), color var(--dur-3) var(--ease-out); }
.contact-tile__icon svg, .contact-tile__icon img { width: 22px; height: 22px; }
.contact-tile:hover .contact-tile__icon, .contact-tile:focus-visible .contact-tile__icon { background: var(--tkt-blue-600); color: var(--fg-on-dark-1); }
.contact-tile__main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.contact-tile__label { font: var(--w-bold) var(--t-caption)/1.3 var(--font-display); letter-spacing: .04em; color: var(--fg-caption); }
.contact-tile__value { font: var(--w-bold) 17px/1.25 var(--font-display); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.contact-tile__go { flex: none; width: 20px; height: 20px; color: var(--tkt-blue-600); transition: transform var(--dur-3) var(--ease-out); }
.contact-tile:hover .contact-tile__go, .contact-tile:focus-visible .contact-tile__go { transform: translateX(4px); }
/* Hotline: nền navy, icon cam chữ ink (cấm chữ trắng trên cam), mũi tên cam-300 */
.contact-tile--dark { background: linear-gradient(150deg, var(--tkt-blue-900), var(--tkt-blue-800)); box-shadow: var(--elev-3); color: var(--fg-on-dark-1); }
.contact-tile--dark:hover, .contact-tile--dark:focus-visible { color: var(--fg-on-dark-1); }
.contact-tile--dark::before { background: var(--tkt-blue-700); }
.contact-tile--dark .contact-tile__icon, .contact-tile--dark:hover .contact-tile__icon, .contact-tile--dark:focus-visible .contact-tile__icon { background: var(--tkt-orange-500); color: var(--fg-1); }
.contact-tile--dark .contact-tile__label { color: var(--fg-on-dark-2); }
.contact-tile--dark .contact-tile__value { color: var(--fg-on-dark-1); font-size: 22px; }
.contact-tile--dark .contact-tile__go { color: var(--tkt-orange-300); }
/* Hàng thẻ + nút phụ (vd email + .btn-copy) */
.contact-row { display: flex; gap: var(--s-2); }
.contact-row > .contact-tile { flex: 1; min-width: 0; }

/* ---------- Nút sao chép nhỏ (← lien-he-copy) — JS thêm .is-done + đổi nhãn "Đã chép" ---------- */
.btn-copy { flex: none; display: grid; place-items: center; gap: 2px; width: 68px; min-height: 44px; padding: var(--s-2); border: 0; border-radius: var(--r-16);
  background: var(--bg-pure); box-shadow: var(--elev-1); color: var(--tkt-blue-600); font: var(--w-bold) 11px/1.2 var(--font-display); cursor: pointer;
  transition: box-shadow var(--dur-2) var(--ease-out), background-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out); }
.btn-copy:hover { background: var(--tkt-blue-050); box-shadow: var(--elev-1), var(--elev-3); }
.btn-copy:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 2px; }
.btn-copy svg { width: 18px; height: 18px; }
.btn-copy.is-done { background: var(--semantic-success-bg); color: var(--semantic-success); }

/* ---------- Tab trượt (← lien-he-tabs · request-types) — thêm vào .seg-tabs sẵn có ----------
   JS: đặt --n = số tab trên .seg-tabs--slide; trượt ink bằng transform: translateX(i * 100%). Phím ←/→ đổi tab. */
.seg-tabs--slide { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 0; width: 100%; }
.seg-tabs__ink { position: absolute; top: 4px; bottom: 4px; left: 4px; width: calc((100% - 8px) / var(--n, 4)); border-radius: var(--r-pill);
  background: var(--bg-pure); box-shadow: var(--elev-2); pointer-events: none; transition: transform var(--dur-3) var(--ease-out); }
.seg-tabs--slide .seg-tabs__item { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; gap: var(--s-2); min-height: 36px; padding: 0 var(--s-1);
  white-space: normal; text-align: center; font-size: 12px; line-height: 1.15; }
.seg-tabs--slide .seg-tabs__item:hover { color: var(--fg-1); }
.seg-tabs--slide .seg-tabs__item[aria-selected="true"], .seg-tabs--slide .seg-tabs__item.is-active { background: transparent; box-shadow: none; color: var(--tkt-blue-600); }
.seg-tabs--slide .seg-tabs__item:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 1px; }
.seg-tabs--slide .seg-tabs__item svg { flex: none; width: 20px; height: 20px; }
/* Bản khối (← request-types): nền Mist, bo 16/12, ô cao 48, chữ 14 */
.seg-tabs--boxed { border-radius: var(--r-16); background: var(--bg-canvas); }
.seg-tabs--boxed .seg-tabs__ink, .seg-tabs--boxed .seg-tabs__item { border-radius: var(--r-12); }
.seg-tabs--boxed .seg-tabs__ink { transition-duration: var(--dur-4); }
.seg-tabs--boxed .seg-tabs__item { min-height: 48px; padding: var(--s-2); font-size: 14px; color: var(--fg-3); }
@media (max-width: 719px) { .seg-tabs--boxed .seg-tabs__item { flex-direction: column; gap: var(--s-1); min-height: 60px; font-size: 12px; } }
@media (max-width: 599px) { .seg-tabs--slide .seg-tabs__item { min-height: 44px; } }

/* ---------- Nút chèn nhanh thông số (← lien-he-spec · request-spec) — .is-done khi textarea đã có thông số ---------- */
.spec-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2); }
.spec-tag { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 var(--s-3); border: 0; border-radius: var(--r-pill);
  background: var(--tkt-blue-050); color: var(--tkt-blue-600); font: var(--w-bold) 12px/1 var(--font-display); cursor: pointer;
  transition: background-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out); }
.spec-tag:hover { background: var(--tkt-blue-100); }
.spec-tag:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 2px; }
.spec-tag svg { width: 12px; height: 12px; }
.spec-tag.is-done { background: var(--semantic-success-bg); color: var(--semantic-success); }
@media (max-width: 599px) { .spec-tag { height: 44px; padding: 0 14px; } }

/* ---------- Thước tiến độ form (← lien-he-meter · request-progress) — JS đặt scaleX(n/N) cho <i>, .is-done khi đủ ---------- */
.progress-meter { display: inline-flex; align-items: center; gap: var(--s-2); font: var(--w-bold) 12px/1 var(--font-display); color: var(--fg-caption); font-variant-numeric: tabular-nums; }
.progress-meter__bar { position: relative; overflow: hidden; width: 72px; height: 6px; border-radius: var(--r-pill); background: var(--tkt-blue-100); }
.progress-meter__bar i { position: absolute; inset: 0; border-radius: inherit; background: var(--tkt-blue-600); transform-origin: left; transform: scaleX(0);
  transition: transform var(--dur-4) var(--ease-out), background-color var(--dur-3) var(--ease-out); }
.progress-meter.is-done { color: var(--semantic-success); }
.progress-meter.is-done .progress-meter__bar i { background: var(--semantic-success-dot); }
@media (max-width: 599px) { .progress-meter { width: 100%; } .progress-meter__bar { flex: 1; } }

/* ---------- Trạng thái sống (← lien-he-now · request-live) — chấm xanh có quầng + 1 dòng; JS đổi theo giờ VN ---------- */
.live-status { display: inline-flex; align-items: center; gap: var(--s-2); margin: 0; font: var(--w-medium) var(--t-body-sm)/1.3 var(--font-body); color: var(--fg-2); }
.live-status::before { content: ""; flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--semantic-success-dot); box-shadow: 0 0 0 4px var(--semantic-success-bg); }
.live-status b, .live-status strong { color: var(--fg-1); font-weight: var(--w-bold); }
.live-status.is-off::before { background: var(--fg-4); box-shadow: none; }
/* Trên hero navy: viên kính tối (lớp nổi), chữ trắng */
.live-status--dark { padding: 6px var(--s-3); border-radius: var(--r-pill); background: var(--glass-dark-fill); border: 1px solid var(--glass-dark-stroke);
  font: var(--w-bold) 13px/1 var(--font-display); color: var(--fg-on-dark-1); }
.live-status--dark b, .live-status--dark strong { color: var(--fg-on-dark-1); }

/* ---------- Lỗi tại ô (← request-cell · request-err) — bọc .field-box; JS đặt aria-invalid="true" khi rời ô ----------
   Bổ sung cho .field-box.is-error (không cần JS thêm class). */
.field-cell { display: flex; flex-direction: column; gap: var(--s-1); min-width: 0; }
.field-cell__err { display: none; font: var(--w-medium) 12px/1.3 var(--font-body); color: var(--semantic-danger); }
.field-box:has([aria-invalid="true"]) { border-color: var(--semantic-danger-line); }
.field-cell:has([aria-invalid="true"]) .field-cell__err { display: block; }

/* ---------- Ô chọn loại yêu cầu (← lien-he-pick) — <label> bọc radio (:checked) HOẶC <button aria-pressed> ---------- */
.intent-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-2); }
@media (min-width: 600px) { .intent-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.intent-tile { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: var(--s-2); padding: var(--s-3); border: 0; border-radius: var(--r-12);
  background: var(--bg-pure); box-shadow: inset 0 0 0 1.5px var(--line-input); color: var(--fg-1); text-align: left; cursor: pointer;
  transition: box-shadow var(--dur-2) var(--ease-out), background-color var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out); }
.intent-tile:hover { box-shadow: inset 0 0 0 1.5px var(--tkt-blue-600); }
.intent-tile input { position: absolute; opacity: 0; pointer-events: none; }
.intent-tile svg { width: 20px; height: 20px; color: var(--tkt-blue-600); }
.intent-tile__label { font: var(--w-bold) 14px/1.25 var(--font-display); color: var(--fg-1); }
.intent-tile:has(input:checked), .intent-tile[aria-pressed="true"] { background: var(--tkt-blue-050); box-shadow: inset 0 0 0 2px var(--tkt-blue-600); }
.intent-tile:has(input:focus-visible), .intent-tile:focus-visible { outline: 3px solid var(--tkt-blue-200); outline-offset: 2px; }
.intent-tile:active { transform: scale(.98); }
@media (max-width: 599px) { .intent-tile { flex-direction: row; align-items: center; min-height: 52px; } }

/* ---------- Dải 4 số (← lien-he-nums) — thay .stat-panel có icon. Số LOCKED 19+ / 12k+ / 28+ / 5k+ / 24/7; KHÔNG đặt trên hero (§Z1) ---------- */
.num-block { list-style: none; margin: 0; padding: var(--s-5) 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-5) var(--s-4);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
@media (min-width: 905px) { .num-block { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 599px) { .num-block { padding: var(--s-4) 0; } }
.num-block__item { display: flex; flex-direction: column; gap: var(--s-1); }
.num-block__value { font: var(--w-bold) clamp(30px, 3.4vw, 44px)/1 var(--font-display); letter-spacing: var(--ls-display); color: var(--tkt-blue-600); font-variant-numeric: tabular-nums; }
.num-block__label { font: var(--w-medium) var(--t-body-sm)/1.35 var(--font-body); color: var(--fg-2); }

/* ---------- Cơ sở + bản đồ (← lien-he-loc · lien-he-card) — bản đồ full + tấm nổi 400px (elev-4) có .seg-tabs--slide ----------
   Đổi lien-he-card → .loc-panel__sheet (cấm -card). JS đổi nội dung __body bằng .is-swap (fade 180–200ms). */
.loc-panel { position: relative; display: grid; overflow: hidden; border-radius: var(--r-24); background: var(--bg-media); box-shadow: var(--elev-1); }
.loc-panel__map { position: relative; aspect-ratio: 4 / 3; }
.loc-panel__map iframe { display: block; width: 100%; height: 100%; border: 0; transition: opacity var(--dur-4) var(--ease-out); }
.loc-panel__map iframe.is-loading { opacity: 0; }
.loc-panel__sheet { display: flex; flex-direction: column; gap: var(--s-4); padding: var(--s-5); background: var(--bg-pure); }
@media (min-width: 905px) {
  .loc-panel__map { aspect-ratio: auto; height: 560px; }
  .loc-panel__sheet { position: absolute; top: var(--s-5); left: var(--s-5); bottom: var(--s-5); width: 400px; padding: var(--s-6); border-radius: var(--r-20); box-shadow: var(--elev-4); }
}
.loc-panel__body { display: flex; flex: 1; flex-direction: column; gap: var(--s-3); transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out); }
.loc-panel__body.is-swap { opacity: 0; transform: translateY(8px); }
.loc-panel__top { display: flex; align-items: center; justify-content: space-between; gap: var(--s-2); }
.loc-panel__name { margin: 0; font: var(--w-bold) 22px/1.2 var(--font-display); }
.loc-panel__addr { margin: 0; font: var(--w-book) 15px/1.5 var(--font-body); color: var(--fg-2); }
.loc-panel__meta { display: flex; flex-direction: column; gap: var(--s-2); margin: 0; padding: var(--s-3) 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font: var(--w-medium) 13px/1.45 var(--font-body); color: var(--fg-3); }
.loc-panel__meta > span { display: flex; align-items: center; gap: var(--s-2); }
.loc-panel__meta > span[hidden] { display: none; }
.loc-panel__meta svg { flex: none; width: 15px; height: 15px; color: var(--tkt-blue-600); }
.loc-panel__open { color: var(--fg-1); font-weight: var(--w-bold); }
.loc-panel__dist { color: var(--tkt-orange-700); font-weight: var(--w-bold); }
.loc-panel__actions { display: flex; gap: var(--s-2); margin-top: auto; }
.loc-panel__actions .btn:first-child { flex: 1; }
@media (max-width: 599px) {
  .loc-panel { border-radius: var(--r-20); }
  .loc-panel__sheet { padding: var(--s-4); }
  .loc-panel__actions .btn { --btn-h: 48px; }
}

/* ---------- Tooltip ⓘ bong bóng phía trên (← lien-he-tip · request-tip) — dùng chung .info-tip (catalog.css) ---------- */
.info-tip--up .info-tip__body { top: auto; bottom: 28px; }
/* Vùng chạm 44px trên mobile mà không đổi kích thước nút 20px */
@media (max-width: 599px) {
  .info-tip__btn { position: relative; }
  .info-tip__btn::after { content: ""; position: absolute; inset: -12px; }
}

/* ---------- Cột phụ dính (← lien-he-hero__info · request-aside) — DS §6 / §Z10: luôn kèm max-height ----------
   top = cao header (--h-nav) + 48px; max-height chừa 16px đáy; cuộn bên trong nếu cột cao hơn màn hình. */
@media (min-width: 1024px) {
  .aside-sticky { position: sticky; top: calc(var(--h-nav) + var(--s-9)); max-height: calc(100vh - var(--h-nav) - var(--s-9) - var(--s-4));
    overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
}

/* ---------- Giảm chuyển động ---------- */
@media (prefers-reduced-motion: reduce) {
  .contact-tile, .contact-tile::before, .contact-tile__go, .btn-copy, .seg-tabs__ink, .spec-tag, .progress-meter__bar i,
  .intent-tile, .loc-panel__map iframe, .loc-panel__body { transition: none; }
  .contact-tile:hover, .contact-tile:focus-visible, .intent-tile:active { transform: none; }
  .contact-tile:hover .contact-tile__go, .contact-tile:focus-visible .contact-tile__go { transform: none; }
  .loc-panel__body.is-swap { transform: none; }
}