/* SEREIN site. Direction A: minimal editorial. Tokens from serein/brand/guidelines.md */
:root {
  --paper: #F6F2EA; --ink: #1C1B19; --graphite: #5A5650; --stone: #D9D2C5;
  --indigo: #283A63; --turmeric: #C8902E;

  --bg: var(--paper); --text: var(--ink); --muted: var(--graphite); --line: var(--stone);
  --surface: #EFE9DD; --link: var(--indigo); --btn-bg: var(--indigo); --btn-text: var(--paper);
  --btn-hover: #1F2D4D; --focus: var(--indigo); --field: #FBF9F4; --field-border: var(--graphite);
  --error: #8A2A1C; --mark: var(--turmeric);

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --t-display: 56px; --t-h1: 44px; --t-h2: 35px; --t-h3: 28px; --t-quote: 28px;
  --t-lead: 22px; --t-body: 18px; --t-label: 14px; --t-small: 14px;

  --nav: 72px; --gut: 24px; --max: 1200px; --sec: 96px;
  --m-in: 140ms; --m-out: 200ms; --m-press: 90ms; --m-image: 600ms;
  --m-ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--ink); --text: var(--paper); --muted: #B4ADA1; --line: #3A3833;
    --surface: #25241F; --link: var(--paper); --btn-bg: var(--paper); --btn-text: var(--ink);
    --btn-hover: #E4DDD0; --focus: var(--turmeric); --field: #22211D; --field-border: #8C857A;
    --error: #F0A493;
  }
}
@media (max-width: 640px) {
  :root { --t-display: 40px; --t-h1: 34px; --t-h2: 28px; --t-h3: 24px; --t-quote: 24px; --t-lead: 20px;
          --nav: 60px; --gut: 16px; --sec: 64px; }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav) + 16px); -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--text); font: 400 var(--t-body)/1.65 var(--serif);
       font-optical-sizing: auto; text-rendering: optimizeLegibility; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { font-weight: 400; margin: 0; text-wrap: balance; }
p { margin: 0 0 1em; }
a { color: var(--link); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; animation: focus-settle var(--m-out) var(--m-ease); }
@keyframes focus-settle { from { outline-offset: 6px; } to { outline-offset: 2px; } }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gut)); margin: 0 auto; padding: 0 var(--gut); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
.label { font: 600 var(--t-label)/1.4 var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 16px; }
.muted { color: var(--muted); }
.small { font: 400 var(--t-small)/1.5 var(--sans); }
.lead { font-size: var(--t-lead); line-height: 1.5; }
.measure { max-width: 34em; }
.skip { position: absolute; left: var(--gut); top: 8px; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%);
        background: var(--bg); padding: 8px 12px; font: 600 15px var(--sans); z-index: 100; }
.skip:focus { width: auto; height: auto; clip-path: none; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Concept banner: the site is not launched yet */
.preview-note { background: var(--surface); border-bottom: 1px solid var(--line); font: 400 13px/1.5 var(--sans); color: var(--muted); text-align: center; padding: 6px var(--gut); }

/* Links: hairline at rest, ink line draws on hover */
.link { color: var(--link); text-decoration: none; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat,
        linear-gradient(var(--line), var(--line)) 0 100% / 100% 1px no-repeat; padding-bottom: 1px;
        transition: background-size var(--m-out) var(--m-ease); }
.link:hover { background-size: 100% 1px, 100% 1px; transition-duration: var(--m-in); }
@media (prefers-color-scheme: dark) {
  .link { background-image: linear-gradient(var(--turmeric), var(--turmeric)), linear-gradient(var(--turmeric), var(--turmeric)); background-size: 0 1px, 100% 1px; }
  .link:hover { background-size: 100% 2px, 100% 1px; }
}

/* Buttons: one primary fill, one text secondary with a turmeric underline */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px;
       font: 600 16px/1.2 var(--sans); text-decoration: none; cursor: pointer; border: 0; border-radius: 2px;
       padding: 14px 24px; background: var(--btn-bg); color: var(--btn-text);
       transition: background-color var(--m-out) var(--m-ease), transform var(--m-out) var(--m-ease); }
.btn--text { background: none; color: var(--text); padding: 14px 4px; border-radius: 0;
             text-decoration: underline; text-decoration-color: var(--turmeric); text-decoration-thickness: 2px; text-underline-offset: 6px; }
.btn--small { min-height: 40px; padding: 10px 16px; font-size: 15px; }
@media (hover: hover) and (pointer: fine) {
  .btn:hover { background-color: var(--btn-hover); transform: translateY(-1px); transition-duration: var(--m-in); }
  .btn--text:hover { background: none; transform: none; text-decoration-thickness: 3px; }
}
.btn:active { transform: translateY(1px) scale(.985); transition-duration: var(--m-press); }
.btn--text:active { transform: scale(.985); }
.btn svg { width: 16px; height: 16px; transition: transform var(--m-out) var(--m-ease); }
.btn:hover svg { transform: translateX(3px); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: var(--nav); }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { width: 108px; height: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav__list { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; }
.nav__list a { font: 400 15px/1 var(--sans); color: var(--text); text-decoration: none; padding: 8px 0; position: relative; }
.nav__list a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 2px; height: 1px; background: currentColor; transition: right var(--m-out) var(--m-ease); }
.nav__list a:hover::after { right: 0; transition-duration: var(--m-in); }
.nav__toggle { display: none; background: none; border: 1px solid var(--field-border); border-radius: 2px; color: var(--text);
               font: 600 15px var(--sans); padding: 8px 14px; min-height: 44px; cursor: pointer; }
@media (max-width: 960px) {
  .nav__toggle { display: inline-flex; align-items: center; }
  .nav__panel { display: none; position: absolute; top: 100%; left: 0; right: 0; height: calc(100svh - var(--nav)); border-top: 1px solid var(--line); background: var(--bg); padding: 32px var(--gut); overflow-y: auto; }
  .nav__panel.is-open { display: block; }
  .nav__list { flex-direction: column; gap: 4px; margin-bottom: 32px; }
  .nav__list a { font: 400 28px/1.3 var(--serif); display: block; padding: 10px 0; }
  .nav__panel .btn { width: 100%; }
  body.menu-open { overflow: hidden; }
}
@media (min-width: 961px) { .nav__panel { display: flex; align-items: center; gap: 28px; } }

/* Sections */
section { padding: var(--sec) 0; border-top: 1px solid var(--line); }
section:first-of-type { border-top: 0; }
.sec-head { margin-bottom: 48px; }
.sec-head h2 { font-size: var(--t-h2); line-height: 1.15; font-weight: 500; }
.sec-head p { margin-top: 16px; color: var(--muted); max-width: 34em; }
@media (min-width: 900px) { .sec-head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
  .sec-head .label { grid-column: 1 / span 3; padding-top: 10px; }
  .sec-head .sec-head__body { grid-column: 4 / span 8; } }
@media (max-width: 640px) { .sec-head { margin-bottom: 32px; } }

/* Hero */
.hero { min-height: calc(100svh - var(--nav) - 31px); display: flex; align-items: center; padding: 64px 0; }
.hero__grid { align-items: end; }
.hero__main { grid-column: 1 / span 8; }
.hero__aside { grid-column: 10 / span 3; border-top: 1px solid var(--line); padding-top: 16px; }
.hero h1 { font-size: var(--t-display); line-height: 1.05; letter-spacing: -.01em; margin-bottom: 32px; }
.hero h1 .mark { position: relative; white-space: nowrap; }
.hero h1 .mark svg { position: absolute; left: -2%; bottom: -.12em; width: 104%; height: .32em; overflow: visible; }
.hero .lead { max-width: 30em; margin-bottom: 40px; }
.actions { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; }
.facts { list-style: none; margin: 0; padding: 0; font: 400 15px/1.5 var(--sans); }
.facts li { padding: 10px 0 10px 18px; border-bottom: 1px solid var(--line); position: relative; }
.facts li::before { content: ""; position: absolute; left: 0; top: 19px; width: 6px; height: 6px; border-radius: 50%; background: var(--turmeric); }
@media (max-width: 900px) { .hero__main, .hero__aside { grid-column: 1 / -1; } .hero__aside { margin-top: 48px; } }
@media (max-width: 640px) { .hero { min-height: 0; padding: 48px 0 64px; } .actions .btn:not(.btn--text) { width: 100%; } }

/* About */
.about__text { grid-column: 4 / span 6; }
.about__text h3 { font-size: var(--t-h3); font-weight: 500; line-height: 1.25; margin: 40px 0 16px; }
.founder { grid-column: 4 / span 9; display: grid; grid-template-columns: 220px 1fr; gap: 32px; margin-top: 48px;
           padding-top: 32px; border-top: 1px solid var(--line); align-items: start; }
.photo-slot { aspect-ratio: 4 / 5; border: 1px dashed var(--field-border); background: var(--surface); display: grid; place-items: center;
              text-align: center; padding: 16px; font: 400 14px/1.5 var(--sans); color: var(--muted); margin: 0; }
.fill-in { border: 1px dashed var(--field-border); background: var(--surface); padding: 12px 16px; font: 400 15px/1.5 var(--sans); color: var(--muted); }
.founder h3 { font-size: var(--t-h3); font-weight: 500; margin: 0 0 4px; }
.founder:not(:has(> figure, > img)) { grid-template-columns: minmax(0, 36em); }
@media (max-width: 900px) { .about__text, .founder { grid-column: 1 / -1; } }
@media (max-width: 640px) { .founder { grid-template-columns: 1fr; } .photo-slot { max-width: 220px; } }

/* Services: an index, not icon cards */
.services { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 48px; counter-reset: svc; }
.services li { border-top: 1px solid var(--line); padding: 24px 0 28px; display: grid; grid-template-columns: 48px 1fr; counter-increment: svc; }
.services li::before { content: counter(svc, decimal-leading-zero); font: 600 14px/2 var(--sans); color: var(--muted); }
.services h3 { font-size: 24px; font-weight: 500; line-height: 1.3; margin-bottom: 6px; }
.services p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.6; }
@media (max-width: 760px) { .services { grid-template-columns: 1fr; } }

/* Cards (templates and work): one family */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 1020px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; gap: 16px; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 2px; display: flex; flex-direction: column; min-width: 0;
        transition: transform 180ms var(--m-ease), border-color var(--m-out) var(--m-ease), box-shadow 180ms var(--m-ease); }
.card--linked:hover { transform: translateY(-2px); border-color: var(--muted); box-shadow: 0 8px 24px rgba(28, 27, 25, .08); }
.card__media { display: block; overflow: hidden; aspect-ratio: 16 / 10; border-bottom: 1px solid var(--line); background: var(--bg); }
.card__media img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform var(--m-image) var(--m-ease); }
.card__media:hover img, .card__media:focus-visible img { transform: scale(1.03); }
.card__body { padding: 20px 20px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { font-size: 24px; font-weight: 500; line-height: 1.25; }
.card p { margin: 0; font-size: 17px; line-height: 1.55; color: var(--muted); }
.card__actions { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; margin-top: auto; padding-top: 16px; }
.card__actions .btn { flex: 0 0 auto; }
.tag { display: inline-block; align-self: flex-start; font: 600 12px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase;
       background: var(--turmeric); color: var(--ink); padding: 6px 8px; border-radius: 2px; }
.tag--quiet { background: none; color: var(--muted); border: 1px solid var(--line); }
.cover { aspect-ratio: 16 / 10; border-bottom: 1px solid var(--line); background: var(--bg); padding: 20px; display: flex; flex-direction: column; justify-content: space-between; }
.cover__title { font: italic 400 26px/1.25 var(--serif); max-width: 14em; }
.cover__rule { width: 48px; height: 2px; background: var(--turmeric); }

/* Process */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 48px; counter-reset: step; }
.steps li { border-top: 1px solid var(--text); padding: 20px 0 40px; counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font: 600 14px/1 var(--sans); color: var(--muted); margin-bottom: 16px; letter-spacing: .08em; }
.steps h3 { font-size: var(--t-h3); font-weight: 500; line-height: 1.25; margin-bottom: 10px; }
.steps p { margin: 0; color: var(--muted); font-size: 17px; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } .steps li { padding-bottom: 28px; } }

/* Forms */
.form-wrap { grid-column: 4 / span 8; }
@media (max-width: 900px) { .form-wrap { grid-column: 1 / -1; } }
form { display: grid; gap: 24px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 640px) { .row-2 { grid-template-columns: 1fr; } }
.field { display: grid; gap: 8px; min-width: 0; }
.field > label, fieldset legend { font: 600 15px/1.4 var(--sans); color: var(--text); }
.hint { font: 400 14px/1.5 var(--sans); color: var(--muted); margin: -4px 0 0; }
.opt { font-weight: 400; color: var(--muted); }
input[type="text"], input[type="email"], select, textarea {
  width: 100%; font: 400 17px/1.5 var(--sans); color: var(--text); background: var(--field);
  border: 1px solid var(--field-border); border-radius: 2px; padding: 12px 14px; min-height: 48px;
  transition: border-color var(--m-in) var(--m-ease), box-shadow var(--m-in) var(--m-ease); }
textarea { min-height: 140px; resize: vertical; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235A5650' stroke-width='1.5'/%3E%3C/svg%3E");
         background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 30%, transparent); }
[aria-invalid="true"] { border-color: var(--error) !important; }
.error { font: 600 14px/1.4 var(--sans); color: var(--error); margin: 0; }
.error:empty { display: none; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
fieldset legend { padding: 0; margin-bottom: 12px; }
.checks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 24px; }
@media (max-width: 640px) { .checks { grid-template-columns: 1fr; } }
.check { display: flex; gap: 12px; align-items: center; font: 400 16px/1.4 var(--sans); padding: 8px 0; cursor: pointer; }
.check input { width: 20px; height: 20px; margin: 0; accent-color: var(--indigo); flex: none; }
@media (prefers-color-scheme: dark) { .check input { accent-color: var(--paper); } }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font: 400 16px/1.5 var(--sans); padding: 12px 16px; border-left: 3px solid var(--turmeric); background: var(--surface); }
.form-status:empty { display: none; }
.form-foot { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; }
.form-foot .small { max-width: 30em; margin: 0; color: var(--muted); }
@media (max-width: 640px) { .form-foot .btn { width: 100%; } }

/* Testimonials */
.quote-slot { border: 1px dashed var(--field-border); background: var(--surface); padding: 32px; max-width: 46em; }
.quote-slot p.q { font: italic 400 var(--t-quote)/1.35 var(--serif); margin: 12px 0 0; color: var(--muted); }
.quotes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; }
.quotes blockquote { margin: 0; font: italic 400 var(--t-quote)/1.35 var(--serif); }
.quotes figcaption { font: 400 14px/1.5 var(--sans); color: var(--muted); margin-top: 16px; }
@media (max-width: 760px) { .quotes { grid-template-columns: 1fr; } }

/* Contact */
.contact__side { grid-column: 1 / span 4; }
.contact__form { grid-column: 6 / span 7; }
.contact__side .big { font: 400 var(--t-h3)/1.3 var(--serif); word-break: break-word; }
.contact__side .block { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); }
.socials { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; font: 400 15px var(--sans); }
@media (max-width: 900px) { .contact__side, .contact__form { grid-column: 1 / -1; } .contact__form { margin-top: 48px; } }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 64px 0 40px; font: 400 15px/1.5 var(--sans); }
.foot { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
.foot__brand { grid-column: 1 / span 4; }
.foot__brand img { width: 108px; margin-bottom: 12px; }
.foot__nav { grid-column: 6 / span 4; }
.foot__social { grid-column: 10 / span 3; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.foot a { color: var(--text); text-decoration: none; }
.foot a:hover { text-decoration: underline; text-decoration-color: var(--turmeric); text-underline-offset: 4px; }
.legal { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); }
.legal a { color: var(--muted); }
@media (max-width: 760px) { .foot__brand, .foot__nav, .foot__social { grid-column: 1 / -1; } }

/* Plain text pages (privacy, terms) */
.doc { padding: 64px 0 96px; }
.doc .measure > * + * { margin-top: 1em; }
.doc h1 { font-size: var(--t-h1); line-height: 1.1; }
.doc h2 { font-size: var(--t-h3); font-weight: 500; line-height: 1.25; margin-top: 48px; }
.doc ul { padding-left: 1.2em; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (max-width: 640px) { .cover { aspect-ratio: auto; min-height: 128px; gap: 24px; } }