/* =============================================================
   Protrans v2 · COMPONENTS - buttons, cards, nav, footer, forms
   ============================================================= */

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-weight:600; font-size:var(--fs-sm); line-height:1;
  padding:13px 14px 13px 22px;
  border-radius:var(--r-pill); border:1px solid transparent;
  cursor:pointer; white-space:nowrap;
  transition:background-color .28s var(--ease), color .28s var(--ease),
             box-shadow .28s var(--ease), transform .18s var(--ease), border-color .28s var(--ease);
}
.btn:active{ transform:translateY(1px) scale(.985); }
.btn .ico{ font-size:1.05em; }
/* button-in-button trailing icon */
.btn__pip{
  display:inline-flex; align-items:center; justify-content:center;
  width:30px; height:30px; border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);
  transition:transform .28s var(--ease), background-color .28s var(--ease);
}
.btn:hover .btn__pip{ transform:translate(2px,-1px) scale(1.05); }

.btn--primary{ background:var(--accent); color:#fff; }
.btn--primary:hover{ background:var(--accent-d); box-shadow:var(--shadow-accent); }
.btn--ink{ background:var(--ink); color:#fff; }
.btn--ink:hover{ background:var(--ink-2); box-shadow:var(--shadow-lg); }
.btn--ink .btn__pip{ background:rgba(255,255,255,.16); }

.btn--ghost{ background:transparent; color:var(--ink); border-color:var(--border); padding:13px 22px; }
.btn--ghost:hover{ border-color:var(--ink); background:var(--surface); }
.surface-ink .btn--ghost, .hero .btn--ghost{ color:#fff; border-color:rgba(255,255,255,.6);
  background:rgba(255,255,255,.12); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px); }
.surface-ink .btn--ghost:hover, .hero .btn--ghost:hover{ background:rgba(255,255,255,.22); border-color:#fff; color:#fff; }
.btn--ghost.btn--lg{ padding:16px 28px; }

/* Sheen quét trên nút chính (premium) */
.btn--primary, .btn--ink{ position:relative; overflow:hidden; }
.btn--primary::after, .btn--ink::after{ content:""; position:absolute; top:0; left:-120%;
  width:60%; height:100%; transform:skewX(-20deg); pointer-events:none;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent); }
.btn--primary:hover::after, .btn--ink:hover::after{ animation:sheen .8s var(--ease); }
@keyframes sheen{ to{ left:140%; } }
@media (prefers-reduced-motion:reduce){ .btn--primary:hover::after,.btn--ink:hover::after{ animation:none; } }

.btn--lg{ font-size:1rem; padding:16px 18px 16px 26px; min-height:68px; }
.btn--ghost.btn--lg{ padding-block:16px; }
.btn--lg .btn__pip{ width:34px; height:34px; }

.btn-link{
  display:inline-flex; align-items:center; gap:8px;
  font-weight:600; color:var(--accent-d);
  transition:gap .25s var(--ease);
}
.btn-link:hover{ gap:12px; }
.surface-ink .btn-link{ color:var(--accent-l); }

/* ---------- Badge / pill ---------- */
.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-size:var(--fs-xs); font-weight:600;
  padding:7px 14px; border-radius:var(--r-pill);
  background:var(--accent-soft); color:var(--accent-d);
}
.surface-ink .badge{ background:rgba(255,255,255,.10); color:var(--accent-l); }

/* ---------- Card (double-bezel) ---------- */
.card{
  background:var(--surface); border-radius:var(--r);
  padding:28px;
  box-shadow:var(--bezel), var(--shadow);
  transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--bezel), var(--shadow-lg); }
.card__ico{
  display:inline-flex; align-items:center; justify-content:center;
  width:52px; height:52px; border-radius:14px;
  background:var(--accent-soft); color:var(--accent-d);
  font-size:26px; margin-bottom:18px;
}
.card h3{ margin-bottom:10px; }
.card p{ color:var(--text-soft); font-size:var(--fs-sm); line-height:1.65; }

/* ---------- Navigation (floating glass pill) ---------- */
.nav{ position:fixed; inset:0 0 auto 0; z-index:var(--z-nav);
  padding-top:env(safe-area-inset-top,0px);
  background:transparent; border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease); }
.nav__inner{ max-width:var(--container); margin-inline:auto; display:flex; align-items:center; gap:22px;
  height:72px; padding-inline:var(--gutter); }
.nav__brand{ display:flex; align-items:center; }
.nav__brand img{ height:25px; width:auto; display:block;
  filter:brightness(0) invert(1); transition:filter .3s var(--ease); }
.nav__links{ display:flex; align-items:center; gap:2px; margin-left:6px; }
.nav__links a{ padding:9px 14px; border-radius:var(--r-pill); font-size:var(--fs-sm); font-weight:500;
  color:rgba(255,255,255,.84); transition:color .2s var(--ease), background-color .2s var(--ease); }
.nav__links a:hover{ color:#fff; background:rgba(255,255,255,.12); }
.nav__links a[aria-current="page"]{ color:#fff; font-weight:600; }
.nav__right{ display:flex; align-items:center; gap:10px; margin-left:auto; }
.nav__lang{ display:inline-flex; align-items:center; gap:6px; font-size:var(--fs-xs); font-weight:600;
  color:rgba(255,255,255,.84); padding:8px 12px; border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.28); background:transparent; cursor:pointer;
  transition:color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease); }
.nav__lang:hover{ border-color:#fff; color:#fff; }
.nav__login{ font-size:var(--fs-sm); font-weight:600; color:#fff; padding:10px 16px;
  border-radius:var(--r-pill); border:1px solid rgba(255,255,255,.42);
  transition:color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease); }
.nav__login:hover{ background:rgba(255,255,255,.12); border-color:#fff; }
.nav__burger{ display:none; color:#fff; }
.footer__brand img{ height:34px; width:auto; display:block; }

/* scrolled → kính trắng, chữ tối */
.nav.scrolled{ background:rgba(247,249,252,.86);
  -webkit-backdrop-filter:blur(16px) saturate(160%); backdrop-filter:blur(16px) saturate(160%);
  border-bottom-color:var(--border); box-shadow:var(--shadow-sm); }
.nav.scrolled .nav__brand img{ filter:none; }
.nav.scrolled .nav__links a{ color:var(--text-soft); }
.nav.scrolled .nav__links a:hover{ color:var(--ink); background:var(--surface-2); }
.nav.scrolled .nav__links a[aria-current="page"]{ color:var(--ink); }
.nav.scrolled .nav__lang{ color:var(--text-soft); border-color:var(--border); }
.nav.scrolled .nav__lang:hover{ color:var(--ink); border-color:var(--ink); }
.nav.scrolled .nav__login{ color:var(--ink); border-color:var(--border); }
.nav.scrolled .nav__login:hover{ background:var(--surface-2); border-color:var(--ink); }
.nav.scrolled .nav__burger{ color:var(--ink); }

@media (max-width:1100px){
  .nav__links, .nav__login{ display:none; }
  .nav__burger{ display:inline-flex; align-items:center; justify-content:center;
    width:44px; height:44px; border-radius:var(--r-pill);
    border:1px solid rgba(255,255,255,.32); background:transparent; cursor:pointer; font-size:22px; }
  .nav.scrolled .nav__burger{ border-color:var(--border); }
}

/* Mobile menu overlay */
.navmenu{
  position:fixed; inset:0; z-index:var(--z-overlay);
  background:rgba(13,27,75,.86);
  -webkit-backdrop-filter:blur(12px) saturate(140%); backdrop-filter:blur(12px) saturate(140%);
  display:flex; flex-direction:column; overflow-y:auto;
  padding:calc(80px + env(safe-area-inset-top,0px)) max(var(--gutter),env(safe-area-inset-right,0px)) calc(24px + env(safe-area-inset-bottom,0px)) max(var(--gutter),env(safe-area-inset-left,0px));
  opacity:0; pointer-events:none; transition:opacity .3s var(--ease);
}
.navmenu.open{ opacity:1; pointer-events:auto; }
.navmenu__close{
  position:absolute; top:calc(18px + env(safe-area-inset-top,0px)); right:var(--gutter);
  display:inline-flex; align-items:center; justify-content:center;
  width:44px; height:44px; border-radius:var(--r-pill);
  border:1px solid var(--on-dark-border); background:transparent; color:#fff;
  font-size:24px; cursor:pointer; transition:background-color .2s var(--ease), border-color .2s var(--ease);
}
.navmenu__close:hover{ background:rgba(255,255,255,.12); border-color:#fff; }

/* Top-level rows (links + accordion trigger) */
.navmenu__nav{ display:flex; flex-direction:column; }
.navmenu__nav > a,
.navmenu__acc{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  width:100%; padding:15px 2px; font-family:inherit; font-size:1.375rem; font-weight:600;
  color:#fff; text-align:left; background:transparent; border:0;
  border-bottom:1px solid var(--on-dark-border); cursor:pointer;
  transition:color .2s var(--ease);
}
.navmenu__nav > a:hover,
.navmenu__acc:hover{ color:var(--accent-l); }
.navmenu__caret{ flex:none; font-size:20px; color:var(--on-dark-mute);
  transition:transform .3s var(--ease), color .2s var(--ease); }
.navmenu__acc[aria-expanded="true"] .navmenu__caret{ transform:rotate(180deg); color:#fff; }

/* Accordion panel: danh sách dịch vụ nằm trong tab Dịch vụ */
.navmenu__panel{ display:grid; grid-template-rows:0fr; transition:grid-template-rows .32s var(--ease); }
.navmenu__panel.open{ grid-template-rows:1fr; }
.navmenu__panel-in{ min-height:0; overflow:hidden; }
.navmenu__svc{ display:flex; gap:14px; align-items:center; padding:13px 4px;
  border-bottom:1px solid rgba(255,255,255,.08); transition:opacity .2s var(--ease); }
.navmenu__svc:first-child{ padding-top:16px; }
.navmenu__svc > i{ font-size:24px; color:var(--accent-l); flex:none; }
.navmenu__svc b{ display:block; font-size:1.0625rem; font-weight:600; color:#fff; transition:color .2s var(--ease); }
.navmenu__svc small{ display:block; margin-top:2px; font-size:.8125rem; color:var(--on-dark-mute); }
.navmenu__svc:hover b,
.navmenu__svc[aria-current="page"] b{ color:var(--accent-l); }
.navmenu__all{ display:inline-flex; align-items:center; gap:7px; padding:15px 4px 4px;
  font-size:.9375rem; font-weight:600; color:var(--accent-l); }
.navmenu__all::after{ content:"\2192"; font-size:1.15em; }

/* Footer: đăng nhập + CTA ghim đáy menu */
.navmenu__foot{ margin-top:auto; padding-top:26px; display:flex; flex-direction:column; gap:12px; }
.navmenu__login{ display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px; border-radius:var(--r-pill); border:1px solid var(--on-dark-border);
  font-size:1rem; font-weight:600; color:#fff;
  transition:background-color .2s var(--ease), border-color .2s var(--ease); }
.navmenu__login:hover{ background:rgba(255,255,255,.1); border-color:#fff; }
.navmenu__foot .btn{ width:100%; justify-content:center; }

/* Entrance stagger cho các hàng cấp trên */
.navmenu__nav > a,
.navmenu__nav > .navmenu__group,
.navmenu__foot{ transform:translateY(14px); opacity:0;
  transition:transform .4s var(--ease), opacity .4s var(--ease), color .2s var(--ease); }
.navmenu.open .navmenu__nav > a,
.navmenu.open .navmenu__nav > .navmenu__group,
.navmenu.open .navmenu__foot{ transform:none; opacity:1; }
.navmenu.open .navmenu__nav > *:nth-child(1){ transition-delay:.04s; }
.navmenu.open .navmenu__nav > *:nth-child(2){ transition-delay:.09s; }
.navmenu.open .navmenu__nav > *:nth-child(3){ transition-delay:.14s; }
.navmenu.open .navmenu__nav > *:nth-child(4){ transition-delay:.19s; }
.navmenu.open .navmenu__foot{ transition-delay:.22s; }
@media (prefers-reduced-motion:reduce){
  .navmenu__nav > a, .navmenu__nav > .navmenu__group, .navmenu__foot{ transform:none;
    transition:opacity .2s var(--ease), color .2s var(--ease); }
  .navmenu__panel{ transition:none; }
  .navmenu__caret{ transition:color .2s var(--ease); }
}

/* ---------- Footer ---------- */
.footer{ background:var(--ink); color:var(--on-dark); padding-block:clamp(56px,7vw,88px) 32px; }
.footer__grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr; gap:48px;
  padding-bottom:48px; border-bottom:1px solid var(--on-dark-border);
}
.footer__brand b{ color:var(--accent-l); }
.footer__brand p{ color:var(--on-dark-soft); margin-top:14px; max-width:34ch; font-size:var(--fs-sm); }
.footer__brand p.footer__entity{ color:var(--on-dark-mute); margin-top:12px; font-size:var(--fs-xs); line-height:1.7; max-width:44ch; }
.footer h3, .footer h4{ color:#fff; font-size:var(--fs-sm); letter-spacing:.04em; text-transform:uppercase; margin-bottom:16px; }
.footer ul{ display:grid; gap:10px; }
.footer__grid a{ color:var(--on-dark-soft); font-size:var(--fs-sm); padding-bottom:1px;
  background:linear-gradient(currentColor,currentColor) left bottom / 0 1px no-repeat;
  transition:color .2s var(--ease), background-size .25s var(--ease); }
.footer__grid a:hover{ color:#fff; background-size:100% 1px; }
@media (prefers-reduced-motion:reduce){ .footer__grid a{ transition:color .2s var(--ease); } }

/* ---------- Tab sliding indicator (tool + routes) ---------- */
.tab-ind{ position:absolute; top:0; left:0; width:1px; height:2px; background:var(--accent); border-radius:2px;
  transform-origin:left center; pointer-events:none; transition:transform .32s var(--ease); }
@media (prefers-reduced-motion:reduce){ .tab-ind{ transition:none; } }

/* ---------- Click-to-copy (SĐT / email) ---------- */
.copy-wrap{ display:inline-flex; align-items:center; gap:6px; }
.copy-btn{ display:inline-flex; align-items:center; justify-content:center; flex:none;
  width:26px; height:26px; border-radius:var(--r-xs); border:0; background:transparent;
  color:var(--text-mute); cursor:pointer; font-size:15px; line-height:0;
  transition:color .2s var(--ease), background-color .2s var(--ease); }
.copy-btn:hover{ color:var(--accent-d); background:var(--accent-soft); }
.copy-btn:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }
.surface-ink .copy-btn, .footer .copy-btn{ color:var(--on-dark-mute); }
.surface-ink .copy-btn:hover, .footer .copy-btn:hover{ color:#fff; background:rgba(255,255,255,.14); }
.copy-toast{ position:fixed; left:50%; bottom:calc(26px + env(safe-area-inset-bottom,0px)); transform:translate(-50%,12px);
  z-index:var(--z-overlay); background:var(--ink); color:#fff; font-size:var(--fs-sm); font-weight:600;
  padding:11px 18px; border-radius:var(--r-pill); box-shadow:var(--shadow-lg);
  opacity:0; pointer-events:none; transition:opacity .25s var(--ease), transform .25s var(--ease); }
.copy-toast.show{ opacity:1; transform:translate(-50%,0); }
@media (prefers-reduced-motion:reduce){ .copy-toast{ transition:opacity .2s var(--ease); transform:translate(-50%,0); } }

/* ---------- Back-to-top ---------- */
.to-top{ position:fixed; right:clamp(14px,3vw,24px); bottom:calc(clamp(16px,4vw,26px) + env(safe-area-inset-bottom,0px)); z-index:var(--z-nav);
  width:46px; height:46px; border-radius:var(--r-pill); border:1px solid var(--border);
  background:var(--surface); color:var(--ink); box-shadow:var(--shadow-lg); cursor:pointer;
  display:inline-flex; align-items:center; justify-content:center; font-size:20px;
  opacity:0; transform:translateY(10px); pointer-events:none;
  transition:opacity .3s var(--ease), transform .3s var(--ease), background-color .2s var(--ease), color .2s var(--ease); }
.to-top.show{ opacity:1; transform:none; pointer-events:auto; }
.to-top:hover{ background:var(--ink); color:#fff; border-color:var(--ink); }
.to-top:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }
@media (max-width:980px){ .to-top{ bottom:calc(16px + 76px + env(safe-area-inset-bottom,0px)); } }
@media (prefers-reduced-motion:reduce){ .to-top{ transition:opacity .2s var(--ease); transform:none; } }
.footer__bottom{ display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; padding-top:24px; color:var(--on-dark-mute); font-size:var(--fs-xs); }
@media (max-width:768px){ .footer__grid{ grid-template-columns:1fr; gap:32px; } .footer__grid a{ display:inline-block; padding-block:8px; } }

/* ---------- Form ---------- */
.field{ display:grid; gap:8px; margin-bottom:18px; }
.field label{ font-size:var(--fs-sm); font-weight:600; color:var(--ink); }
.field input,.field select,.field textarea{
  width:100%; padding:13px 16px;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-sm);
  color:var(--text); transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{ color:var(--text-mute); }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft);
}
.field .hint{ font-size:var(--fs-xs); color:var(--text-mute); }
.field .err{ font-size:var(--fs-xs); color:var(--err); display:none; }
.field.invalid input,.field.invalid textarea,.field.invalid select{ border-color:var(--err); }
.field.invalid .err{ display:block; }

/* ---------- Scroll reveal ---------- */
/* Reveal là lớp enhancement: chỉ ẩn khi JS bật (html.js). Nếu JS/CDN lỗi, nội dung vẫn hiện. */
.reveal{ transition:opacity .7s var(--ease-out), transform .7s var(--ease-out); }
.js .reveal{ opacity:0; transform:translateY(22px); }
.reveal.in{ opacity:1; transform:none; }
.js .reveal[data-d="1"]{ transition-delay:.08s; }
.js .reveal[data-d="2"]{ transition-delay:.16s; }
.js .reveal[data-d="3"]{ transition-delay:.24s; }
@media (prefers-reduced-motion:reduce){ .js .reveal{ opacity:1; transform:none; } }

/* ---------- Card spotlight (pointer-follow glow) ---------- */
.cell, .card{ --mx:50%; --my:0%; }
.cell::before{ content:""; position:absolute; inset:0; z-index:0; pointer-events:none; opacity:0;
  background:radial-gradient(280px circle at var(--mx) var(--my), rgba(11,165,250,.18), transparent 62%);
  transition:opacity .3s var(--ease); }
.cell:hover::before{ opacity:1; }
@media (prefers-reduced-motion:reduce){ .cell::before{ display:none; } }

/* ---------- Sticky báo giá (xuất hiện khi cuộn) ---------- */
.sticky-cta{ position:fixed; right:clamp(16px,4vw,28px); bottom:calc(clamp(16px,4vw,28px) + env(safe-area-inset-bottom,0px));
  z-index:var(--z-nav); opacity:0; transform:translateY(16px); pointer-events:none;
  transition:opacity .3s var(--ease), transform .3s var(--ease); }
.sticky-cta.show{ opacity:1; transform:none; pointer-events:auto; }
.sticky-cta .btn{ box-shadow:var(--shadow-accent); }

/* Nav scrim (đảm bảo chữ nav đọc được trên ảnh hero) */
.nav::before{ content:""; position:absolute; inset:0 0 -44px 0; z-index:-1; pointer-events:none; opacity:1;
  background:linear-gradient(180deg, rgba(13,27,75,.62) 0%, rgba(13,27,75,.28) 55%, transparent 100%);
  transition:opacity .3s var(--ease); }
.nav.scrolled::before{ opacity:0; }

/* Sticky báo giá: chỉ hiện ở mobile (desktop đã có CTA trên nav) */
@media (min-width:981px){ .sticky-cta{ display:none !important; } }

/* Cân chiều cao nút trên navbar (đồng đều) */
.nav__lang, .nav__login, .nav__right .btn{ height:40px; }
.nav__lang{ padding-block:0; }
.nav__login{ align-items:center; padding-block:0; }
.nav__right .btn{ padding-top:0; padding-bottom:0; }
/* Đăng nhập chỉ hiện ở desktop; mobile đưa vào menu.
   (Đặt display trong media query để không rò rỉ, ghi đè display:none ở breakpoint mobile) */
@media (min-width:1101px){ .nav__login{ display:inline-flex; } }

/* ---------- Nav dropdown (megamenu dịch vụ) ---------- */
.nav__item--has-drop{ position:relative; display:flex; align-items:center; }
.nav__drop{ position:absolute; top:calc(100% + 10px); left:0; min-width:320px;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-lg);
  box-shadow:var(--bezel),var(--shadow-lg); padding:10px;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
  display:grid; gap:2px; }
.nav__item--has-drop:hover .nav__drop, .nav__item--has-drop:focus-within .nav__drop{ opacity:1; visibility:visible; transform:none; }
.nav__drop a{ display:flex; gap:12px; align-items:center; padding:10px 12px; border-radius:var(--r-sm);
  color:var(--text-soft) !important; background:transparent !important; transition:background-color .2s var(--ease); }
.nav__drop a:hover{ background:var(--surface-2) !important; }
.nav__drop i{ font-size:23px; color:var(--accent-d); flex:none; }
.nav__drop b{ display:block; color:var(--ink); font-size:var(--fs-sm); font-weight:600; }
.nav__drop small{ display:block; color:var(--text-mute); font-size:var(--fs-xs); }
@media (max-width:1100px){ .nav__drop{ display:none; } }

/* ---------- Nav mobile: bớt chật góc phải ---------- */
@media (max-width:560px){
  .nav__lang{ display:none; }
  .nav__right > .btn--primary{ display:none; }   /* dựa vào sticky-cta + menu */
  .nav__brand img{ height:20px; }                /* logo gọn hơn trên mobile */
  .nav__inner{ gap:12px; }
}
/* Nút báo giá nổi (sticky, chỉ mobile): nhỏ gọn hơn, không che nội dung */
.sticky-cta .btn--lg{ min-height:0; font-size:.9375rem; padding:12px 16px 12px 20px; }
.sticky-cta .btn--lg .btn__pip{ width:28px; height:28px; }