/* ==========================================================================
   Delta Pacific — Seafood Exports
   Shared stylesheet for all pages.

   DESIGN LANGUAGE (v5 — "deep water", dark theme)
   - Dark slate-blue ground, light blue-grey ink, lots of open space.
   - Sections step up in lightness: page ground → tinted band → cards.
   - Every button is glass: transparent, blurred, with a hairline edge.
   - One typeface throughout: Avenir (Avenir Next on Apple devices, Mulish
     elsewhere). No decorative labels or italic flourishes.
   - Motion is quiet: soft reveals on scroll, gentle image zoom on hover,
     press feedback on buttons. All of it switches off for users who ask
     for reduced motion.

   HOW TO EDIT
   - Colours, fonts, spacing and shadows are tokens in ":root" (section 1).
     Change them once and every page follows.
   - Layout is mobile-first; "@media (min-width: …)" blocks add rules for
     tablet (640px) and desktop (960px).
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand — light blue-grey ink on a dark slate ground */
  --blue:        #DCE9F3;   /* primary ink: headings, labels, card names */
  --blue-deep:   #060E15;   /* deepest band: footer, hero base           */
  --blue-mid:    #6FB6E2;   /* accent: links, focus rings, hovers        */
  --blue-soft:   #8AA3B8;   /* muted blue: secondary labels              */

  /* Neutrals — dark greys with a blue cast (deep water) */
  --bg:          #0C161F;   /* page ground — darkest working surface     */
  --bg-tint:     #121E29;   /* alternate section band — a step lighter   */
  --surface:     #16232F;   /* cards — the lightest surface              */
  --text:        #D9E5EF;
  --muted:       #93A8B9;
  --line:        rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.20);

  /* Glass — used by every button and the floating chrome */
  --glass-bg:      rgba(255, 255, 255, 0.07);
  --glass-bg-hover:rgba(255, 255, 255, 0.15);
  --glass-edge:    rgba(255, 255, 255, 0.22);
  --glass-line:    rgba(255, 255, 255, 0.24);
  --glass-blur:    blur(14px) saturate(150%);

  /* Type — Avenir. Apple devices use the real Avenir Next; everyone else
     falls back to Mulish, the closest free match, loaded from Google Fonts. */
  --font-body:    "Avenir Next", "Avenir", "Mulish", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: var(--font-body);
  --font-brand:   var(--font-body);   /* wordmark — same face, Light 300 */

  /* Shape & depth */
  --radius-sm: 12px;
  --radius:    16px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.30), 0 6px 16px rgba(0,0,0,.22);
  --shadow-md: 0 2px 6px rgba(0,0,0,.32), 0 16px 40px rgba(0,0,0,.32);
  --shadow-lg: 0 8px 20px rgba(0,0,0,.36), 0 40px 80px rgba(0,0,0,.44);

  /* Motion — one easing family shared by everything */
  --ease-out:  cubic-bezier(.22, 1, .36, 1);
  --ease-in:   cubic-bezier(.64, 0, .78, 0);
  --dur-fast:  160ms;
  --dur:       320ms;
  --dur-slow:  700ms;

  /* Layout */
  --container: 1200px;
  --header-h:  76px;
}



/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;         /* 17px */
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

/* Headings: tight leading, negative tracking as size grows */
h1, h2, h3, h4 {
  margin: 0 0 .5em;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--blue);
  line-height: 1.1;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.5rem, 5.6vw, 4.4rem); line-height: 1.05; letter-spacing: -0.022em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); letter-spacing: -0.018em; }
h3 { font-size: 1.35rem; letter-spacing: -0.008em; }
h4 { font-family: var(--font-body); font-size: .8rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }

/* Layout helpers */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.section { padding: 4.5rem 0; }
.section--tint { background: var(--bg-tint); }
.center { text-align: center; }

/* Section header block: heading + short lead */
.section-head { max-width: 680px; margin-bottom: 2.75rem; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head p { color: var(--muted); font-size: 1.125rem; }

/* Header row with an "See all →" link on the right */
.section-head--row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.section-head--row > div { max-width: 620px; }

/* Text link with arrow */
.link-arrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 500; color: var(--blue);
  transition: gap var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.link-arrow svg { width: 18px; height: 18px; transition: transform var(--dur) var(--ease-out); }
.link-arrow:hover { gap: .75rem; }
.link-arrow:hover svg { transform: translateX(2px); }

/* Skip link + focus */
.skip-link { position: absolute; left: 1rem; top: -100px; z-index: 1000; padding: .6rem 1rem; border-radius: 8px; background: var(--blue-mid); color: #06121C; }
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 3px solid var(--blue-mid); outline-offset: 3px; border-radius: 4px; }


/* --------------------------------------------------------------------------
   3. Buttons — all glass: transparent fill, blur, hairline edge
   -------------------------------------------------------------------------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 48px;
  padding: 0 1.7rem;
  border-radius: 999px;
  font: 500 .97rem/1 var(--font-body);
  letter-spacing: .01em;
  cursor: pointer;
  text-decoration: none;
  touch-action: manipulation;
  color: var(--blue);
  background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-line);
  /* inner top highlight = light catching the edge of the material */
  box-shadow: inset 0 1px 0 var(--glass-edge), 0 2px 10px rgba(0,0,0,.25);
  transition:
    transform var(--dur-fast) var(--ease-out),
    background var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out);
}
.btn svg { width: 18px; height: 18px; transition: transform var(--dur) var(--ease-out); }
.btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--blue);
  box-shadow: inset 0 1px 0 var(--glass-edge), 0 8px 22px rgba(0,0,0,.35);
  transform: translateY(-1px);
}
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: translateY(0) scale(.97); transition-duration: 80ms; }  /* feedback on press */

/* On dark photos: same glass, white ink */
.btn--on-dark { color: #fff; border-color: rgba(255,255,255,.55); background: rgba(255,255,255,.14); }
.btn--on-dark:hover { background: rgba(255,255,255,.26); border-color: #fff; }

/* Quiet variant — no fill until hover (used for secondary actions) */
.btn--quiet { background: transparent; box-shadow: none; border-color: var(--line-strong); }
.btn--quiet:hover { background: var(--glass-bg); box-shadow: inset 0 1px 0 var(--glass-edge); }

/* Hero primary — the brightest material on the page, so it reads first.
   Brighter glass + a soft glow + a slow sheen that sweeps across on hover. */
.btn--hero {
  min-height: 60px;
  padding: 0 2.4rem;
  font-size: 1.06rem;
  letter-spacing: .005em;
  color: var(--blue-deep);
  background: rgba(255,255,255,.92);
  border-color: #fff;
  box-shadow:
    inset 0 1px 0 #fff,
    0 12px 34px rgba(6,26,42,.34),
    0 0 0 5px rgba(255,255,255,.14);
  overflow: hidden;
  font-weight: 600;
}
.btn--hero::after {              /* the sheen */
  content: ""; position: absolute; top: 0; bottom: 0; left: -60%;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.75), transparent);
  transform: skewX(-18deg);
  opacity: 0;
  pointer-events: none;
}
.btn--hero:hover {
  background: rgba(255,255,255,.95);
  border-color: #fff;
  box-shadow:
    inset 0 1px 0 #fff,
    0 18px 44px rgba(6,26,42,.40),
    0 0 0 9px rgba(255,255,255,.20);
  transform: translateY(-2px);
}
.btn--hero:hover::after { opacity: 1; animation: btn-sheen 900ms var(--ease-out); }
@keyframes btn-sheen { from { left: -60%; } to { left: 120%; } }

.btn--lg { min-height: 54px; padding: 0 2.1rem; font-size: 1.02rem; }
.btn--sm { min-height: 40px; padding: 0 1.2rem; font-size: .9rem; }


/* --------------------------------------------------------------------------
   4. Header — translucent chrome; content scrolls beneath it
   -------------------------------------------------------------------------- */
/* Header has NO background of any kind — no bar, no gradient, no blur. The
   logo and menu simply float on top of whatever is behind them. Legibility
   comes from the text shadow below, not from darkening the page. */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
/* Scroll-edge effect: a soft shadow appears only once content passes underneath */
/* Once content scrolls underneath, the gradient deepens a little for contrast
   (still a fade, never a hard bar). */
/* Stays completely transparent once scrolled too. */
.site-header.is-scrolled { background: none; box-shadow: none; }

.site-header .brand__name,
.site-header .brand__tag,
.site-header .nav a {
  text-shadow: 0 1px 2px rgba(6,14,21,.95), 0 0 6px rgba(6,14,21,.9), 0 0 18px rgba(6,14,21,.75);
}
.site-header .brand__mark { filter: drop-shadow(0 2px 6px rgba(6,14,21,.6)); }

.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: 1rem; }

/* Logo lock-up */
.brand { display: flex; align-items: center; gap: .75rem; }
.brand__mark { width: auto; height: 44px; flex: none; }   /* real logo is wider than tall */
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name { font-family: var(--font-brand); font-weight: 600; font-size: 1.12rem; letter-spacing: .15em; text-transform: uppercase; color: #fff; }
.brand__tag { margin-top: .36rem; font-family: var(--font-brand); font-weight: 500; font-size: .6rem; letter-spacing: .26em; text-transform: uppercase; color: rgba(255,255,255,.68); }

/* Hamburger */
.nav-toggle {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 0 11px;
  background: var(--glass-bg); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-line); border-radius: 12px; cursor: pointer;
  box-shadow: inset 0 1px 0 var(--glass-edge);
  transition: background var(--dur) var(--ease-out);
}
.nav-toggle span { display: block; height: 1.5px; width: 100%; background: var(--blue); border-radius: 2px; transition: transform var(--dur) var(--ease-out), opacity var(--dur-fast) var(--ease-out); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(.4); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Menu: floating panel on mobile, inline on desktop */
.nav {
  position: absolute; left: .75rem; right: .75rem; top: calc(100% + .35rem);
  background: rgba(22,35,47,.97);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform-origin: top right;
  opacity: 0; visibility: hidden; transform: translateY(-6px) scale(.98);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility 0s linear var(--dur);
}
.nav.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.nav ul { list-style: none; margin: 0; padding: .6rem; }
.nav a { display: block; padding: .9rem 1rem; border-radius: 12px; font-weight: 500; color: var(--blue); }
.nav a:hover { background: rgba(255,255,255,.06); }
.nav a.is-active { color: var(--blue-mid); }
.nav .nav__cta { padding: .4rem .4rem .4rem; }
.nav .nav__cta .btn { width: 100%; }
.nav .nav__cta .btn:hover { background: linear-gradient(180deg, #CFAB63 0%, var(--blue-mid) 100%); }


/* --------------------------------------------------------------------------
   5. Hero (home)
   -------------------------------------------------------------------------- */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 82svh;
  display: grid; align-items: center;
  color: #fff;
  background: var(--blue-deep);
}
/* Slideshow: every slide is stacked in the same box and cross-faded by script.js.
   Each slide holds its own <img> so the browser can pick/decode it normally. */
.hero__slides { position: absolute; inset: 0; z-index: -2; overflow: hidden; background: var(--blue-deep); }
.hero__slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}
.hero__slide.is-active { opacity: 1; }
.hero__slide img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  transform: scale(1.04);
}
/* the active slide drifts very slowly — stops entirely under reduced motion */
.hero__slide.is-active img { animation: hero-drift 9s var(--ease-out) forwards; }
@keyframes hero-drift { from { transform: scale(1.04); } to { transform: scale(1); } }

/* On narrow screens the left-to-right veil can't do enough work, so the
   overlay becomes mostly vertical and heavier — keeps the headline readable
   over any photo. */
@media (max-width: 959px) {
  /* narrow screens: the shade runs top-to-bottom instead of left-to-right */
  .hero::before { content: none; }
  .page-hero::before {
    background: linear-gradient(180deg, rgba(6,26,42,.18) 0%, rgba(6,26,42,.48) 55%, rgba(6,26,42,.68) 100%);
  }
}

/* Small glass dots to show/choose the slide */
.hero__dots {
  position: absolute; left: 0; right: 0; bottom: 1.75rem; z-index: 2;
  display: flex; justify-content: center; gap: .5rem;
}
.hero__dot {
  width: 34px; height: 4px; padding: 0; border-radius: 999px; cursor: pointer;
  background: rgba(255,255,255,.4);
  border: 1px solid rgba(255,255,255,.35);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  transition: background var(--dur) var(--ease-out), width var(--dur) var(--ease-out);
}
.hero__dot[aria-current="true"] { background: rgba(255,255,255,.95); width: 52px; }
/* Soft white veil from the left keeps the headline legible on any photo */
/* No white wash — the photo shows at full colour. A soft shade sits only
   behind the text so the white headline stays readable on any picture. */
/* No overlay on the slideshow — the photo shows at full brightness.
   The headline stays readable via its own text shadow (see .hero h1). */
.hero::before { content: none; }
.hero__inner { padding: calc(var(--header-h) + 3rem) 0 6.5rem; }
.hero__inner > * { max-width: 680px; }   /* text measure, block stays left-aligned with the page */
.hero h1 { color: #fff; margin-bottom: .5em; text-shadow: 0 2px 5px rgba(6,14,21,.75), 0 0 14px rgba(6,14,21,.6), 0 6px 40px rgba(6,14,21,.55); }
.hero__lead { font-size: clamp(1.1rem, 1.5vw, 1.25rem); line-height: 1.6; color: #fff; max-width: 520px; margin: 0 0 2.25rem; text-shadow: 0 1px 3px rgba(6,14,21,.9), 0 0 10px rgba(6,14,21,.8), 0 2px 22px rgba(6,14,21,.6); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; }

/* Inner-page banner */
.page-hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 46svh; display: grid; align-items: end;
  color: #fff; background: var(--blue-deep);
}
.page-hero__bg { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center; transform: scale(1.05); animation: hero-zoom 12s var(--ease-out) forwards; }
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(6,26,42,.60) 0%, rgba(6,26,42,.36) 45%, rgba(6,26,42,.06) 78%, rgba(6,26,42,0) 100%),
    linear-gradient(180deg, rgba(6,26,42,.10) 0%, rgba(6,26,42,0) 40%, rgba(6,26,42,.42) 100%);
}
.page-hero__inner { padding: calc(var(--header-h) + 2.5rem) 0 3rem; }
.page-hero__inner > * { max-width: 700px; }
.page-hero h1 { color: #fff; font-size: clamp(2.2rem, 4.6vw, 3.6rem); margin-bottom: .4em; }
.page-hero p { color: rgba(255,255,255,.9); font-size: 1.15rem; max-width: 560px; }


/* --------------------------------------------------------------------------
   6. Trust strip — floats over the hero's bottom edge
   -------------------------------------------------------------------------- */
.trust {
  display: grid;
  gap: 1rem;
}
/* Interactive tiles: clickable links that lift, glow and reveal a "more" cue */
.trust__item {
  position: relative;
  display: block;
  padding: 1.9rem 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  color: inherit; text-decoration: none;
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
/* a faint accent line that sweeps in along the top on hover */
.trust__item::before {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--blue-mid), transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}
.trust__item:hover, .trust__item:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(111,182,226,.45);
  background: #182A38;
  box-shadow: var(--shadow-md);
}
.trust__item:hover::before, .trust__item:focus-visible::before { transform: scaleX(1); }
.trust__item:active { transform: translateY(-1px) scale(.995); transition-duration: 90ms; }

.trust__icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; background: rgba(255,255,255,.06); border: 1px solid var(--line); color: var(--blue-mid); margin-bottom: 1rem; transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); }
.trust__icon svg { width: 22px; height: 22px; }
.trust__item:hover .trust__icon, .trust__item:focus-visible .trust__icon { background: rgba(111,182,226,.16); transform: scale(1.06); }
.trust__item h3 { font-family: var(--font-body); font-size: 1.05rem; font-weight: 600; letter-spacing: 0; margin-bottom: .35em; }
.trust__item p { color: var(--muted); font-size: .98rem; line-height: 1.6; margin: 0; }

/* "Our story →" cue: hidden until hover/focus, slides up into view */
.trust__more {
  display: inline-flex; align-items: center; gap: .4rem;
  margin-top: 1rem;
  font-size: .88rem; font-weight: 600; color: var(--blue-mid);
  opacity: 0; transform: translateY(6px);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), gap var(--dur) var(--ease-out);
}
.trust__more svg { width: 16px; height: 16px; }
.trust__item:hover .trust__more, .trust__item:focus-visible .trust__more { opacity: 1; transform: none; }
.trust__item:hover .trust__more { gap: .6rem; }


/* --------------------------------------------------------------------------
   7. Product cards
   -------------------------------------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.card {
  position: relative; display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0;   /* square corners — product tiles are sharp, not rounded */
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }
/* Every card photo sits in the same 4:3 box and is cropped to fill it, so the
   grid stays aligned at any screen size no matter the source photo's shape. */
.card__media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: var(--bg-tint); }
.card__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  transform: scale(1.001);
  transition: transform var(--dur-slow) var(--ease-out);
}
.card:hover .card__img { transform: scale(1.05); }
/* Placeholder tile for products that have no photo yet: brand mark on a tint */
.card__media--empty { display: grid; place-items: center; background: linear-gradient(160deg, #1B2A38 0%, #14202B 100%); }
.card__media--empty img { width: 34%; height: auto; opacity: .22; }
/* soft inner edge so light photos don't bleed into the card */
.card__media::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(255,255,255,.07); pointer-events: none; }
.card__body { padding: .95rem 1.05rem 1.05rem; display: flex; align-items: flex-start; justify-content: space-between; gap: .5rem; }
.card__name { margin: 0; font-family: var(--font-body); font-size: .98rem; font-weight: 600; letter-spacing: 0; color: var(--blue); line-height: 1.3; }
.card__note { margin: .2rem 0 0; font-size: .8rem; color: var(--muted); letter-spacing: .02em; }
.card__arrow { flex: none; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line); color: var(--blue); opacity: 0; transform: translateX(-4px); transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out); }
.card__arrow svg { width: 14px; height: 14px; }
a.card:hover .card__arrow { opacity: 1; transform: none; }

/* Products page: category blocks */
.category { position: relative; padding: 4rem 0; scroll-margin-top: calc(var(--header-h) + 3.5rem); }
.category + .category { border-top: 1px solid var(--line); }
.category__head { max-width: 700px; margin-bottom: 2rem; }
.category__head p { color: var(--muted); font-size: 1.1rem; }

/* Sticky category chips (products page) */
.jump-wrap {
  position: sticky; top: var(--header-h); z-index: 50;
  background: rgba(12,22,31,.86);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
.jump { display: flex; gap: .5rem; padding: .85rem 0; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.jump::-webkit-scrollbar { display: none; }
.jump a {
  flex: none; padding: .5rem 1rem; border-radius: 999px;
  border: 1px solid var(--glass-line); background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  box-shadow: inset 0 1px 0 var(--glass-edge);
  font-size: .88rem; font-weight: 500; color: var(--blue); white-space: nowrap;
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.jump a:hover { border-color: var(--blue); background: var(--glass-bg-hover); }


/* --------------------------------------------------------------------------
   8. Call-to-action — light, editorial
   -------------------------------------------------------------------------- */
.cta {
  position: relative; isolation: isolate; overflow: hidden;
  padding: 6rem 0;
  text-align: center;
  background: var(--bg-tint);
  border-top: 1px solid var(--line);
}
.cta::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 80% at 15% 100%, rgba(111,182,226,.14), transparent 70%),
    radial-gradient(55% 75% at 85% 0%, rgba(27,92,135,.22), transparent 70%);
}
.cta h2 { max-width: 22ch; margin-inline: auto; }
.cta p { color: var(--muted); font-size: 1.15rem; max-width: 520px; margin: 0 auto 2.25rem; }


/* --------------------------------------------------------------------------
   9. About page pieces
   -------------------------------------------------------------------------- */
.split { display: grid; gap: 2.5rem; align-items: center; }
.split__img { min-width: 0; }   /* lets the image shrink inside the grid cell */
.split__text { min-width: 0; }
.split__text p { color: var(--muted); font-size: 1.08rem; }
.split__text p strong { color: var(--text); font-weight: 600; }

/* Section photo: fixed 4:3 box, cropped to fill — never pushes the layout
   sideways and always lines up with the text column beside it. */
.frame { position: relative; margin: 0; }
.frame img {
  display: block; width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover; object-position: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: var(--bg-tint);
}

.facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem 2rem; }
.facts__item { padding-top: 1.1rem; border-top: 1px solid var(--line); }
.facts__num { display: block; font-family: var(--font-display); font-size: clamp(2.6rem, 4.5vw, 3.6rem); font-weight: 500; line-height: 1; color: var(--blue); letter-spacing: -0.02em; }
.facts__label { display: block; margin-top: .45rem; font-size: .92rem; color: var(--muted); }

.checklist { list-style: none; margin: 1.25rem 0 0; padding: 0; display: grid; gap: .9rem; }
.checklist li { display: flex; gap: .95rem; align-items: flex-start; }
.checklist__dot { flex: none; width: 26px; height: 26px; margin-top: 2px; display: grid; place-items: center; border-radius: 50%; background: var(--glass-bg); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); border: 1px solid var(--glass-line); color: var(--blue); box-shadow: inset 0 1px 0 var(--glass-edge); }
.checklist__dot svg { width: 13px; height: 13px; }
.checklist strong { display: block; color: var(--blue); font-weight: 600; margin-bottom: .1rem; }
.checklist span { color: var(--muted); font-size: 1rem; }


/* --------------------------------------------------------------------------
   10. Contact page
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; gap: 2.5rem; }
.contact-list { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 1.1rem; }
.contact-list li { display: flex; gap: 1rem; align-items: flex-start; }
.contact-list__icon { flex: none; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); color: var(--blue); box-shadow: var(--shadow-sm); }
.contact-list__icon svg { width: 18px; height: 18px; }
.contact-list strong { display: block; font-size: .72rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: .2rem; }
.contact-list a { font-weight: 500; }
.contact-list a:hover { color: var(--blue-mid); }

.form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-lg);
}
.form h2 { font-size: 1.9rem; margin-bottom: 1.1rem; }
.form__row { display: grid; gap: 1rem; margin-bottom: 1rem; }
.form label { display: block; font-size: .82rem; font-weight: 600; letter-spacing: .04em; color: var(--blue); margin-bottom: .4rem; }
.form input, .form select, .form textarea {
  width: 100%; min-height: 48px;
  font: inherit; color: var(--text);
  padding: .75rem 1rem;
  border: 1px solid var(--line-strong); border-radius: 12px; background: var(--bg);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--blue-mid); box-shadow: 0 0 0 4px rgba(111,182,226,.22); }
.form textarea { min-height: 150px; resize: vertical; }
.form .btn { width: 100%; }
.form__hint { margin: .85rem 0 0; font-size: .86rem; color: var(--muted); }
.form__success { display: none; padding: 1.4rem 1.6rem; border-radius: var(--radius); background: rgba(85,214,127,.10); border: 1px solid rgba(85,214,127,.38); color: #A7E8BE; font-weight: 500; }
.form__success.is-visible { display: block; }

.map { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-md); }
.map iframe { display: block; width: 100%; height: 340px; border: 0; filter: invert(91%) hue-rotate(180deg) saturate(.75) contrast(.92); }


/* --------------------------------------------------------------------------
   10b. Floating WhatsApp button (every page)
   -------------------------------------------------------------------------- */
.wa-float {
  position: fixed;
  right: max(1.25rem, env(safe-area-inset-right));
  bottom: calc(1.25rem + env(safe-area-inset-bottom));
  z-index: 90;
  display: inline-flex; align-items: center; gap: .6rem;
  height: 56px; padding: 0 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font: 500 .95rem/1 var(--font-body);
  color: var(--text);
  background: var(--glass-bg-hover);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-line);
  box-shadow: inset 0 1px 0 var(--glass-edge), 0 8px 26px rgba(6,26,42,.20);
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
.wa-float svg { width: 26px; height: 26px; flex: none; color: #1FA855; }   /* WhatsApp green */
.wa-float:hover { background: rgba(255,255,255,.20); box-shadow: inset 0 1px 0 var(--glass-edge), 0 12px 34px rgba(6,26,42,.28); transform: translateY(-2px); }
.wa-float:active { transform: translateY(0) scale(.96); transition-duration: 80ms; }
/* On phones it collapses to a circle so it never covers content */
@media (max-width: 639px) {
  .wa-float { width: 56px; padding: 0; justify-content: center; }
  .wa-float span { display: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .wa-float { background: var(--surface); backdrop-filter: none; -webkit-backdrop-filter: none; border-color: var(--blue); }
}

/* Footer version — white ink on the dark band */
.wa-btn {
  display: inline-flex; align-items: center; gap: .6rem;
  min-height: 46px; padding: 0 1.15rem; margin-top: .35rem;
  border-radius: 999px;
  font: 500 .93rem/1 var(--font-body);
  color: #fff; text-decoration: none;
  background: rgba(255,255,255,.10);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255,255,255,.4);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25);
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.wa-btn svg { width: 20px; height: 20px; color: var(--brand, #55D67F); flex: none; transition: color var(--dur) var(--ease-out); }
.wa-btn:hover { background: rgba(255,255,255,.20); border-color: #fff; color: #fff; transform: translateY(-1px); }
.wa-btn:active { transform: translateY(0) scale(.97); transition-duration: 80ms; }

/* Row of social buttons in the footer (WhatsApp, Zalo, WeChat, LinkedIn) */
.footer-social { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .5rem; }
.footer-social .wa-btn { margin-top: 0; }

/* Same row on the Contact page, using the standard glass buttons */
.contact-social { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2rem; }
.contact-social .btn svg { width: 20px; height: 20px; color: var(--brand, currentColor); flex: none; transition: color var(--dur) var(--ease-out); }
.contact-social .btn:hover svg { transform: none; }   /* these icons shouldn't slide like arrows do */


/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  background: var(--blue-deep);
  color: rgba(255,255,255,.78);
  padding: 4rem 0 1.75rem;
  font-size: .95rem;
}
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent); }
.footer-grid { display: grid; gap: 2.25rem; }
.site-footer h4 { color: rgba(255,255,255,.55); margin-bottom: 1rem; }
.site-footer a { color: #fff; transition: color var(--dur) var(--ease-out); }
.site-footer a:hover { color: #A9CBE4; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .55rem; }
.footer-brand .brand__name { color: #fff; }
.footer-brand .brand__tag { color: rgba(255,255,255,.55); }
.footer-brand p { margin-top: 1.1rem; max-width: 34ch; color: rgba(255,255,255,.65); }
.footer-bottom { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,.1); display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between; font-size: .85rem; color: rgba(255,255,255,.5); }


/* --------------------------------------------------------------------------
   12. Scroll reveal (progressive enhancement — see script.js)
   -------------------------------------------------------------------------- */
.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); transition-delay: var(--d, 0ms); }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
/* Stagger children inside a group */
.js [data-reveal-group] > * { opacity: 0; transform: translateY(18px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); }
.js [data-reveal-group].is-visible > * { opacity: 1; transform: none; }
.js [data-reveal-group].is-visible > :nth-child(1) { transition-delay: 0ms; }
.js [data-reveal-group].is-visible > :nth-child(2) { transition-delay: 60ms; }
.js [data-reveal-group].is-visible > :nth-child(3) { transition-delay: 120ms; }
.js [data-reveal-group].is-visible > :nth-child(4) { transition-delay: 180ms; }
.js [data-reveal-group].is-visible > :nth-child(5) { transition-delay: 240ms; }
.js [data-reveal-group].is-visible > :nth-child(6) { transition-delay: 300ms; }
.js [data-reveal-group].is-visible > :nth-child(n+7) { transition-delay: 340ms; }


/* --------------------------------------------------------------------------
   13. Responsive — tablet (≥ 640px)
   -------------------------------------------------------------------------- */
@media (min-width: 640px) {
  .section { padding: 5.5rem 0; }
  .cards { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
  .form__row--2 { grid-template-columns: 1fr 1fr; }
  .form .btn { width: auto; }
  .facts { grid-template-columns: repeat(4, 1fr); }
  .trust { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
  .trust__item { padding: 2.1rem 1.9rem; }
  .brand__mark { height: 48px; }
  .brand__name { font-size: 1.18rem; }
  .brand__tag { font-size: .64rem; }
}


/* --------------------------------------------------------------------------
   14. Responsive — desktop (≥ 960px)
   -------------------------------------------------------------------------- */
@media (min-width: 960px) {
  :root { --header-h: 84px; }
  .section { padding: 7rem 0; }

  /* Inline menu with animated underline */
  .nav-toggle { display: none; }
  .nav {
    position: static; opacity: 1; visibility: visible; transform: none;
    background: none; border: 0; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none;
  }
  .nav ul { display: flex; align-items: center; gap: .25rem; padding: 0; }
  .nav a { position: relative; padding: .55rem .9rem; border-radius: 0; font-size: .95rem; color: rgba(217,229,239,.82); }
  .nav a:hover { background: none; color: var(--blue); }
  .nav a::after { content: ""; position: absolute; left: .9rem; right: .9rem; bottom: .25rem; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease-out); }
  .nav a:hover::after { transform: scaleX(1); }
  .nav a.is-active { color: var(--blue); }
  .nav a.is-active::after { transform: scaleX(1); background: var(--blue-mid); }
  .nav .nav__cta { padding: 0 0 0 .9rem; }
  /* keep the header CTA a proper pill — undo the generic .nav a link styles */
  .nav .nav__cta .btn { display: inline-flex; width: auto; border-radius: 999px; padding: 0 1.15rem; color: var(--blue); }
  .nav .nav__cta .btn::after { display: none; }

  .hero__inner { padding: calc(var(--header-h) + 5rem) 0 10rem; }
  .cards { grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
  .cards--6 { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }   /* 6 featured items → 3 × 2, larger photos */

  .split { grid-template-columns: 1fr 1fr; gap: 5rem; }
  .split--reverse .split__img { order: 2; }
  .contact-grid { grid-template-columns: 1fr 1.35fr; gap: 4rem; align-items: start; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem; }
  .form { padding: 2.5rem; }
  .map iframe { height: 400px; }
}


/* --------------------------------------------------------------------------
   15. Accessibility preferences
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: 1ms !important; }
  .hero__bg, .page-hero__bg, .hero__slide img { transform: none; animation: none !important; }
  .js [data-reveal], .js [data-reveal-group] > * { opacity: 1; transform: none; }
  .card:hover .card__img { transform: none; }
}
/* If the viewer asks for less transparency, make glass solid and keep contrast */
@media (prefers-reduced-transparency: reduce) {
  .site-header, .jump-wrap, .nav { background: var(--bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .btn, .jump a, .nav-toggle, .checklist__dot {
    background: var(--surface); backdrop-filter: none; -webkit-backdrop-filter: none;
    border-color: var(--blue); box-shadow: none;
  }
  .btn--on-dark { background: rgba(7,42,67,.85); border-color: #fff; }
}
@media (prefers-contrast: more) {
  .btn { border-color: var(--blue); background: var(--surface); }
}