/* vistulasand.com
   Hairline cards over a scrolling ink landscape (idea from stankiguild.com), set in Geist,
   palette of sand and river. Cards sit in a centred 1180px grid; the landscape shows in the gaps. */

@font-face { font-family: "Geist"; font-style: normal; font-display: swap; font-weight: 100 900;
  src: url("/assets/fonts/geist-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Geist"; font-style: normal; font-display: swap; font-weight: 100 900;
  src: url("/assets/fonts/geist-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Geist Mono"; font-style: normal; font-display: swap; font-weight: 100 900;
  src: url("/assets/fonts/geist-mono-latin-wght-normal.woff2") format("woff2"); }

:root {
  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --paper: #f5efe3;
  --veil: rgba(252, 249, 243, 0.95);
  --surface: #fffdf9;
  --stone: #efe6d4;
  --ink: #1c1710;
  --muted: #6a5d4a;
  --line: rgba(60, 40, 10, 0.12);
  --sand: #b8894a;
  --river: #24577a;
  --river-ink: #ffffff;
  --card: 0 0 0 1px #3c280a17, 0 1px 2px -1px #3c280a14, 0 2px 4px 0 #3c280a0d;
  --lift: 0 1px 2px #3c280a0a, 0 14px 34px -18px #3c280a40;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --topbar: 60px;
  --gutter: clamp(16px, 4vw, 32px);
  --radius: 18px;
  --ls-filter: none;
  --ls-opacity: 0.7;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f0d0a; --veil: rgba(24, 20, 15, 0.94); --surface: #1b1712; --stone: #2a241b;
    --ink: #f3ecdc; --muted: #b8ab92; --line: rgba(255, 240, 210, 0.13); --sand: #d9b77c; --river: #78b0d6; --river-ink: #0f0d0a;
    --card: 0 0 0 1px #ffffff1c, 0 1px 2px -1px #00000066, 0 2px 4px 0 #00000040;
    --lift: 0 1px 2px #00000040, 0 14px 34px -18px #000000a0;
    --ls-filter: invert(1) hue-rotate(180deg); --ls-opacity: 0.38;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f0d0a; --veil: rgba(24, 20, 15, 0.94); --surface: #1b1712; --stone: #2a241b;
  --ink: #f3ecdc; --muted: #b8ab92; --line: rgba(255, 240, 210, 0.13); --sand: #d9b77c; --river: #78b0d6; --river-ink: #0f0d0a;
  --card: 0 0 0 1px #ffffff1c, 0 1px 2px -1px #00000066, 0 2px 4px 0 #00000040;
  --lift: 0 1px 2px #00000040, 0 14px 34px -18px #000000a0;
  --ls-filter: invert(1) hue-rotate(180deg); --ls-opacity: 0.38;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; min-height: 100vh; background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--font-sans); overflow-x: hidden;
  font-feature-settings: "ss01"; -webkit-font-smoothing: antialiased; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 3px; }
::selection { background: var(--sand); color: #fff; }
.skip { position: absolute; left: 8px; top: -60px; z-index: 50; padding: 8px 12px; border-radius: 8px; background: var(--ink); color: var(--paper); }
.skip:focus { top: 8px; }
:focus-visible { outline: 2px solid var(--river); outline-offset: 2px; border-radius: 4px; }

/* type scale */
h1, h2, h3 { margin: 0; font-family: var(--font-sans); color: var(--ink); text-wrap: balance; }
h1 { font-size: clamp(34px, 5.2vw, 60px); font-weight: 700; line-height: 1.04; letter-spacing: -0.035em; }
h2 { font-size: clamp(24px, 2.8vw, 34px); font-weight: 650; line-height: 1.12; letter-spacing: -0.025em; }
h3 { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; text-wrap: pretty; }
.body { font-size: 17px; line-height: 1.65; color: var(--muted); }
.lead { font-size: clamp(17px, 1.5vw, 19px); color: var(--ink); opacity: 0.86; }
.label { margin: 0; font: 500 12px/1.3 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--sand); }
.proof { padding-top: 14px; border-top: 1px solid var(--line); font-size: 13.5px; line-height: 1.55; color: var(--muted); }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 10; height: var(--topbar); background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar-in { display: flex; align-items: center; gap: 16px; height: 100%; max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; text-decoration: none; margin: 0; }
.seal { width: 26px; height: 26px; flex: none; }
.topbar nav { display: flex; gap: 2px; margin-left: auto; }
.topbar nav a { padding: 8px 12px; border-radius: 9px; font-size: 14.5px; font-weight: 500; text-decoration: none; color: var(--muted); }
.topbar nav a:hover { color: var(--ink); background: var(--stone); }
.topbar nav .nav-cta { color: var(--river-ink); background: var(--river); margin-left: 6px; }
.topbar nav .nav-cta:hover { color: var(--river-ink); background: var(--river); filter: brightness(1.1); }
.langs { display: flex; gap: 2px; font: 500 12px/1 var(--font-mono); }
.langs a { padding: 8px 6px; border-radius: 6px; text-decoration: none; color: var(--muted); }
.langs a[aria-current] { color: var(--ink); background: var(--stone); }
@media (max-width: 860px) { .topbar nav a:not(.nav-cta) { display: none; } }
@media (max-width: 440px) { .brand { font-size: 0; gap: 0; } .langs a { padding: 8px 4px; } .topbar-in { gap: 8px; } }

/* landscape */
.landscape { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; height: 100vh; height: 100lvh; }
.ls-strip { position: absolute; top: 0; left: 0; height: 100%; display: flex; will-change: transform; filter: var(--ls-filter); }
.ls-tile { height: 100%; width: auto; max-width: none; flex: none; opacity: 0; transition: opacity 1400ms ease; }
.ls-tile.is-in { opacity: var(--ls-opacity); }

/* layout: bands of cards, landscape visible between them */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }
.band { padding: clamp(14px, 2.4vw, 22px) 0; }
.band:nth-of-type(3n) { padding-top: clamp(40px, 9vh, 110px); }
.hero-band { padding-top: clamp(20px, 6vh, 64px); padding-bottom: clamp(24px, 7vh, 80px); }
.grid-2 { display: grid; gap: clamp(14px, 2vw, 22px); }
@media (min-width: 900px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.card { position: relative; padding: clamp(22px, 3vw, 36px); border-radius: var(--radius); background: var(--veil); box-shadow: var(--card), var(--lift); }
.card > * + * { margin-top: 16px; }
.card > .label + h2, .card > .label + h1 { margin-top: 10px; }

/* hero */
.hero { display: grid; gap: clamp(22px, 3vw, 40px); align-items: center; }
.hero > * + * { margin-top: 0; }
.hero-text > * + * { margin-top: 18px; }
@media (min-width: 960px) { .hero { grid-template-columns: 1.05fr 1fr; } }
.hero-media { margin: 0; }
.hero-media video { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 14px; background: var(--stone); }
figcaption { margin-top: 8px; font-size: 13px; color: var(--muted); }

.facts, .stats, .uses, .steps, .list, .ticks, .site-footer ul, .related ul { list-style: none; margin: 0; padding: 0; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.facts li, .stats li { padding: 14px; border-radius: 12px; background: var(--surface); box-shadow: var(--card); }
.facts b, .stats b { display: block; font-size: clamp(20px, 2.3vw, 26px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; color: var(--river); }
.facts span, .stats span { display: block; margin-top: 5px; font-size: 13px; line-height: 1.35; color: var(--muted); }
@media (max-width: 460px) { .facts { grid-template-columns: 1fr; } }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.price-card h2 { font-size: clamp(30px, 3.6vw, 44px); color: var(--river); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border: 0; border-radius: 11px; font: 600 15px/1 var(--font-sans); text-decoration: none; cursor: pointer;
  background: var(--river); color: var(--river-ink); box-shadow: var(--lift); transition: transform 160ms var(--ease-out), filter 160ms; }
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(0.97); }
.btn.ghost { background: var(--surface); color: var(--ink); box-shadow: var(--card); }

/* specs */
.specs-grid { display: grid; gap: 20px; align-items: start; }
@media (min-width: 980px) { .specs-grid { grid-template-columns: 1.45fr 1fr; } }
.table-scroll { overflow-x: auto; border-radius: 12px; background: var(--surface); box-shadow: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { font: 500 11px/1.3 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
tbody th { font-weight: 450; }
tbody td:nth-child(2) { font-weight: 650; white-space: nowrap; }
tbody td:nth-child(3) { color: var(--muted); white-space: nowrap; font: 400 12.5px/1.6 var(--font-mono); }
tr:last-child th, tr:last-child td { border-bottom: 0; }
@media (max-width: 600px) { tbody td:nth-child(2) { white-space: normal; } tbody td:nth-child(3) { display: none; } thead th:nth-child(3) { display: none; } }
.chart { margin: 0; padding: 18px; border-radius: 12px; background: var(--surface); box-shadow: var(--card); }
.chart svg { margin-top: 10px; width: 100%; height: auto; font: 11px var(--font-mono); fill: var(--muted); }
.chart .g { stroke: var(--line); }
.chart .c { fill: none; stroke: var(--river); stroke-width: 2.5; stroke-linejoin: round; }
.chart circle { fill: var(--surface); stroke: var(--river); stroke-width: 2; }

/* uses: tiles */
.uses { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.uses li > * { position: relative; display: grid; gap: 4px; height: 100%; padding: 16px 40px 16px 16px; border-radius: 12px; background: var(--surface); box-shadow: var(--card); text-decoration: none; transition: transform 200ms var(--ease-out), box-shadow 200ms; }
.uses b { font-weight: 650; letter-spacing: -0.01em; }
.uses span { font-size: 14px; color: var(--muted); line-height: 1.45; }
.uses i { position: absolute; right: 16px; top: 16px; font-style: normal; color: var(--river); transition: transform 200ms var(--ease-out); }
.uses a:hover { transform: translateY(-2px); box-shadow: var(--card), var(--lift); }
.uses a:hover i { transform: translateX(3px); }

/* process */
.steps { display: grid; gap: 10px; counter-reset: s; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { counter-increment: s; padding: 16px; border-radius: 12px; background: var(--surface); box-shadow: var(--card); }
.steps b { display: block; font-weight: 650; }
.steps b::before { content: counter(s, decimal-leading-zero); display: block; margin-bottom: 6px; font: 500 12px var(--font-mono); color: var(--sand); }
.steps p { margin-top: 6px; font-size: 14.5px; line-height: 1.5; color: var(--muted); }
.duo { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }

.list { display: grid; gap: 14px; }
.list b { font-weight: 650; }
.list p { margin-top: 2px; font-size: 15px; color: var(--muted); }
.ticks { display: grid; gap: 9px; }
.ticks li { position: relative; padding-left: 26px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.42em; width: 12px; height: 7px; border-left: 2px solid var(--river); border-bottom: 2px solid var(--river); transform: rotate(-45deg); }

/* photos + lightbox */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); gap: 10px; }
.gallery.small { grid-template-columns: 1fr 1fr; }
.gallery.small .ph span { display: none; }
.ph { display: block; text-decoration: none; cursor: zoom-in; }
.ph img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 12px; background: var(--stone); transition: transform 300ms var(--ease-out), filter 300ms; }
.ph:hover img { transform: scale(1.015); filter: brightness(1.05); }
.ph span { display: block; margin-top: 7px; font-size: 13px; line-height: 1.4; color: var(--muted); }
dialog.lb { width: 100vw; max-width: 100vw; height: 100dvh; max-height: 100dvh; margin: 0; padding: 0; border: 0; background: rgba(12, 10, 7, 0.94); color: #f3ecdc; overscroll-behavior: contain; }
dialog.lb::backdrop { background: rgba(12, 10, 7, 0.6); }
.lb-stage { position: absolute; inset: 56px 0 80px; display: grid; place-items: center; touch-action: pan-y; }
.lb-stage img { max-width: min(94vw, 1600px); max-height: 100%; object-fit: contain; border-radius: 8px; user-select: none; -webkit-user-drag: none; }
.lb-bar { pointer-events: none; position: absolute; left: 0; right: 0; bottom: 0; display: flex; align-items: center; gap: 14px; min-height: 80px; padding: 12px var(--gutter); font-size: 14px; }
.lb-bar .count { font: 500 12px var(--font-mono); opacity: 0.7; white-space: nowrap; }
.lb button { z-index: 2; display: grid; place-items: center; width: 48px; height: 48px; border: 0; border-radius: 50%; background: rgba(255, 255, 255, 0.12); color: #fff; font: 400 22px/1 var(--font-sans); cursor: pointer; }
.lb button:hover { background: rgba(255, 255, 255, 0.22); }
.lb .lb-close { position: absolute; top: 8px; right: 12px; }
.lb .lb-prev, .lb .lb-next { position: absolute; top: 50%; transform: translateY(-50%); }
.lb .lb-prev { left: 12px; } .lb .lb-next { right: 12px; }
@media (max-width: 700px) { .lb .lb-prev, .lb .lb-next { top: auto; bottom: 16px; transform: none; } .lb .lb-prev { left: auto; right: 72px; } .lb-bar { padding-right: 140px; } }

/* faq */
.faq { display: grid; gap: 8px; }
.faq details { border-radius: 12px; background: var(--surface); box-shadow: var(--card); }
.faq summary { position: relative; padding: 16px 48px 16px 18px; font-weight: 600; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 400; color: var(--river); transition: transform 200ms var(--ease-out); }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 18px 18px; color: var(--muted); }

/* contact */
.contact-grid { display: grid; gap: 28px; }
.contact-grid > * + * { margin-top: 0; }
.contact-grid > div > * + * { margin-top: 16px; }
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1.1fr; } }
.direct { display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; margin: 0; }
.direct dt { font: 500 11.5px/2.2 var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.direct dd { margin: 0; font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.direct a { text-decoration: none; }
.direct a:hover { color: var(--river); }
.enquiry { display: grid; gap: 12px; }
.enquiry .two { display: grid; gap: 12px; }
@media (min-width: 560px) { .enquiry .two { grid-template-columns: 1fr 1.6fr; } }
.enquiry label { display: grid; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }
.enquiry input, .enquiry textarea { width: 100%; padding: 12px 14px; border: 0; border-radius: 10px; font: inherit; font-size: 16px; color: var(--ink); background: var(--surface); box-shadow: var(--card); }
.enquiry input:focus, .enquiry textarea:focus { outline: 2px solid var(--river); outline-offset: 0; }
.enquiry .btn { justify-self: start; }

/* subpages */
.page-hero { max-width: 860px; }
.page-hero h1 { font-size: clamp(32px, 4.6vw, 52px); }
.crumbs { font: 500 12px/1.4 var(--font-mono); color: var(--muted); }
.crumbs a { color: var(--river); text-decoration: none; }
.article-grid { display: grid; gap: clamp(14px, 2vw, 22px); align-items: start; }
@media (min-width: 960px) { .article-grid { grid-template-columns: minmax(0, 1fr) 340px; } .side { position: sticky; top: calc(var(--topbar) + 16px); } }
.side { display: grid; gap: 14px; }
.side-card { padding: 20px; }
.side-card .big { font-size: 26px; font-weight: 700; letter-spacing: -0.03em; color: var(--river); }
.prose { font-size: 17px; line-height: 1.7; }
.prose > * + * { margin-top: 14px; }
.prose h2 { margin-top: 34px; font-size: clamp(22px, 2.4vw, 28px); }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: color-mix(in srgb, var(--ink) 84%, var(--paper)); max-width: 70ch; }
.prose ul { padding-left: 20px; }
.prose li + li { margin-top: 6px; }
.prose .faq { margin-top: 14px; }
.legal { max-width: 860px; }
.related ul { display: grid; gap: 4px; margin-top: 10px; }
.related a { display: flex; justify-content: space-between; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 550; font-size: 15px; }
.related i { font-style: normal; color: var(--river); }
.cta-card { display: grid; gap: 20px; align-items: center; background: color-mix(in srgb, var(--river) 10%, var(--veil)); }
.cta-card > * + * { margin-top: 0; }
@media (min-width: 860px) { .cta-card { grid-template-columns: 1fr auto; } }
.cta-card .body { margin-top: 8px; }

/* footer */
.site-footer { margin-top: clamp(40px, 10vh, 120px); padding: 40px 0 48px; font-size: 14px; color: var(--muted); background: var(--paper); border-top: 1px solid var(--line); }
.foot-grid { display: grid; gap: 28px; }
@media (min-width: 800px) { .foot-grid { grid-template-columns: 1.3fr 1fr 1fr; } }
.foot-grid > div > * + * { margin-top: 12px; }
.site-footer .brand { color: var(--ink); }
.site-footer ul { display: grid; gap: 6px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--river); text-decoration: underline; }
.picker main { display: grid; place-items: center; min-height: 100vh; text-align: center; }
.picker .langs { justify-content: center; font-size: 16px; }
@media print { .landscape, .topbar nav, .skip, video, dialog { display: none; } }

/* calculator */
.calc-grid { display: grid; gap: 28px; align-items: start; }
.calc-grid > * + * { margin-top: 0; }
@media (min-width: 900px) { .calc-grid { grid-template-columns: 1.1fr 1fr; } }
.calc { display: grid; gap: 14px; }
.calc .two { display: grid; gap: 12px; }
@media (min-width: 520px) { .calc .two { grid-template-columns: 1fr 1fr; } }
.calc label { display: grid; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }
.calc input[type=number], .calc select { width: 100%; padding: 12px 14px; border: 0; border-radius: 10px; font: inherit; font-size: 16px; color: var(--ink); background: var(--surface); box-shadow: var(--card); }
.calc .seg { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; border: 0; }
.calc .seg legend { width: 100%; margin-bottom: 8px; }
.calc .seg label { display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 10px; background: var(--surface); box-shadow: var(--card); color: var(--ink); font-size: 14px; cursor: pointer; }
.calc .seg label:has(input:checked) { box-shadow: 0 0 0 2px var(--river); }
.calc-out { padding: 22px; border-radius: 14px; background: var(--surface); box-shadow: var(--card); }
.calc-out > * + * { margin-top: 16px; }
.calc-out dl { display: grid; grid-template-columns: 1fr auto; gap: 10px 16px; margin: 0; align-items: baseline; }
.calc-out dt { color: var(--muted); font-size: 14.5px; }
.calc-out dd { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; text-align: right; color: var(--river); }
[hidden] { display: none !important; }