/* Jannis Duckek, one-pager. Colours follow Jannis's graphics; system fonts only, nothing loaded from third parties. */

:root {
  --bg: #FAFAF7;
  --ink: #141414;
  --ink-2: #3A3A3A;
  --muted: #5C5C5C;
  --rule: #D6D6D0;
  --card: #FFFFFF;
  --green: #2C7A4B;
  --green-deep: #22603B;
  --green-tint: #E2ECE4;
  --blue: #3557A6;
  --blue-tint: #E4E8F1;
  --overlap: #CDDAD6;
  --on-accent: #FFFFFF;
  --todo: #FFF1A8;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121413;
    --ink: #ECECE6;
    --ink-2: #CFCFC8;
    --muted: #A3A39C;
    --rule: #2C2F2D;
    --card: #181B19;
    --green: #6CC08E;
    --green-deep: #93D6AE;
    --green-tint: #17271D;
    --blue: #8FA8E8;
    --blue-tint: #181F33;
    --overlap: #1F302D;
    --on-accent: #0D1410;
    --todo: #5A4B00;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--font); font-variant-numeric: tabular-nums; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: var(--green); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--green-deep); }
a:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }
p { margin: 0 0 1em; }
.wrap { max-width: 1040px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.todo { background: var(--todo); color: var(--ink); padding: 1px 6px; border-radius: 3px; }

/* Top bar */
.top { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--rule); }
@supports (backdrop-filter: blur(8px)) or (-webkit-backdrop-filter: blur(8px)) {
  .top { background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
}
.bar { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 15px; }
.brand svg { width: 28px; height: 28px; }
.brand circle { fill: none; stroke-width: 5; }
.brand circle:first-child { stroke: var(--blue); }
.brand circle:last-child { stroke: var(--green); }
.top nav { display: flex; gap: 22px; font-size: 14px; }
.top nav a { color: var(--ink-2); text-decoration: none; }
.top nav a:hover { color: var(--green); }

/* Type */
.label { font-size: 12px; font-weight: 400; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin: 0 0 28px; padding-top: 16px; border-top: 1px solid var(--ink); }
.label b { color: var(--green); font-weight: 700; margin-right: 14px; }
.display { font-size: clamp(30px, 4.4vw, 44px); line-height: 1.08; letter-spacing: -.02em; font-weight: 700; margin: 0 0 14px; }
.sub { font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 64px 0 16px; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 64px; align-items: center; padding: 80px 0 16px; }
.path-line { font-size: 13px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 0 0 20px; }
.path-line span { white-space: nowrap; }
.path-line i { font-style: normal; color: var(--green); padding: 0 .15em; }
h1 { font-size: clamp(36px, 11vw, 64px); line-height: 1; letter-spacing: -.03em; margin: 0 0 24px; }
.tagline { font-size: clamp(28px, 4vw, 44px); line-height: 1.08; font-weight: 700; letter-spacing: -.025em; margin: 0 0 24px; }
.tagline span { display: block; }
.tagline .hl { color: var(--green); }
.intro { color: var(--ink-2); max-width: 36em; margin: 0 0 32px; }
.btns { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; padding: 11px 20px; border-radius: 999px; border: 1px solid var(--ink); color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; line-height: 1.2; }
.btn:hover { border-color: var(--green); color: var(--green); }
.btn.primary { background: var(--green); border-color: var(--green); color: var(--on-accent); }
.btn.primary:hover { background: var(--green-deep); border-color: var(--green-deep); color: var(--on-accent); }
.btn.ghost { padding-left: 8px; padding-right: 8px; border-color: transparent; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.portrait { margin: 0; width: 100%; max-width: 360px; justify-self: end; }
.portrait img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 6px; }

/* Sections */
section { padding-top: 96px; }
.now { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 32px; }
.now li { position: relative; padding: 16px 0 18px 22px; border-bottom: 1px solid var(--rule); color: var(--ink-2); }
.now li::before { content: ""; position: absolute; left: 0; top: 26px; width: 8px; height: 8px; background: var(--green); }
.now strong { color: var(--ink); }

/* Research */
.cdt { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; }
.lead { font-size: clamp(19px, 2.2vw, 22px); line-height: 1.35; margin-bottom: 18px; }
.cdt p:not(.lead) { color: var(--ink-2); }
.venn-wrap { margin: 0; }
.venn { width: 100%; height: auto; font-family: var(--font); }
.venn .c-deep { fill: var(--blue-tint); }
.venn .c-climate { fill: var(--green-tint); }
.venn .c-overlap { fill: var(--overlap); }
.venn .c-deep-line, .venn .c-climate-line { fill: none; stroke-width: 2.5; }
.venn .c-deep-line { stroke: var(--blue); }
.venn .c-climate-line { stroke: var(--green); }
.venn .t-deep { fill: var(--blue); }
.venn .t-climate { fill: var(--green); }
.venn .t-cdt { fill: var(--ink); }
.venn .t-h { font-size: 21px; font-weight: 700; }
.venn .t-s { font-size: 16px; }
.venn .t-e { font-size: 14.5px; fill: var(--muted); }
.venn .t-c { font-size: 17px; font-weight: 700; }
.venn .t-abc { font-size: 14px; fill: var(--muted); }
.pre { margin: 48px 0 16px; color: var(--muted); }
.criteria { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.criteria li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; align-items: start; }
.dot { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: var(--on-accent); background: var(--green); }
.dot.a { background: var(--blue); }
.criteria strong { display: block; line-height: 1.3; margin: 4px 0; }
.criteria div span { display: block; font-size: 15px; line-height: 1.45; color: var(--ink-2); }
.note { font-size: 13px; color: var(--muted); margin: 24px 0 0; }
.pubs { list-style: none; margin: 0; padding: 0; }
.pubs li { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 20px; padding: 14px 0; border-top: 1px solid var(--rule); font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.pubs .status { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.more { margin: 14px 0 0; font-size: 15px; }

/* Path */
.path { list-style: none; margin: 0; padding: 0; }
.path li { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 24px; padding: 18px 0; border-top: 1px solid var(--rule); }
.path .y { font-size: 14px; color: var(--muted); padding-top: 2px; white-space: nowrap; }
.path .current .y { color: var(--green); font-weight: 700; }
.path .r { display: block; font-weight: 700; line-height: 1.35; }
.path .d { display: block; max-width: 46em; margin-top: 4px; font-size: 15px; line-height: 1.5; color: var(--ink-2); }

/* Work with me */
.offers { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 16px; }
.offer { display: flex; flex-direction: column; align-items: flex-start; padding: 28px; border: 1px solid var(--rule); border-radius: 10px; background: var(--card); }
.offer.feature { background: var(--green-tint); border-color: transparent; }
.offer .k { font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--green); margin: 0 0 12px; }
.offer h3 { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.15; letter-spacing: -.015em; margin: 0 0 12px; }
.offer p:not(.k) { color: var(--ink-2); margin: 0 0 24px; }
.offer > .btn, .offer > .btns { margin-top: auto; }
.calendar { margin-top: 16px; border: 1px solid var(--rule); border-radius: 10px; background: var(--card); overflow: hidden; }
.cal-gate { padding: 28px; }
.cal-gate .k { font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--green); margin: 0 0 12px; }
.cal-gate p:not(.k) { max-width: 44em; margin: 0 0 22px; color: var(--ink-2); }
.calendar iframe { display: block; width: 100%; height: 600px; border: 0; }
button.btn { font-family: inherit; cursor: pointer; }

/* Off the clock */
.off { max-width: 32em; margin: 0; font-size: clamp(21px, 2.8vw, 28px); line-height: 1.4; letter-spacing: -.01em; }

/* Contact */
footer { padding-top: 96px; padding-bottom: 40px; }
.mail { display: inline-block; font-size: clamp(26px, 5.2vw, 52px); font-weight: 700; letter-spacing: -.02em; line-height: 1.1; color: var(--ink); text-decoration: none; overflow-wrap: anywhere; }
.mail:hover { color: var(--green); }
.links { list-style: none; margin: 26px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 28px; }
.legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; margin-top: 80px; padding-top: 18px; border-top: 1px solid var(--rule); font-size: 13px; color: var(--muted); }
.legal a { color: var(--muted); }

/* Legal pages */
.legal-page { max-width: 760px; padding-top: 56px; padding-bottom: 24px; }
.legal-page h1 { font-size: clamp(34px, 5vw, 48px); line-height: 1.1; letter-spacing: -.02em; margin: 0 0 24px; }
.legal-page h2 { font-size: 18px; margin: 36px 0 8px; }
.legal-page p { color: var(--ink-2); }
.legal-page + footer { padding-top: 24px; }
.legal-page + footer .legal { margin-top: 24px; }

/* Tablet */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 8px; }
  .portrait { order: -1; width: 132px; justify-self: start; }
  .portrait img { aspect-ratio: 1; border-radius: 50%; object-position: 50% 30%; }
  .cdt { grid-template-columns: 1fr; gap: 28px; }
  .criteria { grid-template-columns: 1fr; gap: 18px; }
  .now { grid-template-columns: 1fr; }
  .offers { grid-template-columns: 1fr; }
}

/* Phone */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .brand span { display: none; }
  section, footer { padding-top: 64px; }
  .offer, .cal-gate { padding: 22px; }
  .path li, .pubs li { grid-template-columns: 1fr; gap: 4px; }
  .venn .t-e { display: none; }
}