/* davidballi.eu — Swiss grid
   Layout: 12-column grid, flush-left type, hard rules instead of boxes.
   Edit colours here only. */
:root {
  --paper: #f5f5f2;
  --ink: #111214;
  --muted: #5d6066;
  --rule: #d6d7d2;
  --accent: #1d3bd9;
  --track: #e3e4df;

  --sans: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.75rem;
  --step-3: clamp(2rem, 4vw, 3rem);
  --display: clamp(3.5rem, 13.5vw, 12.5rem);

  --gap: clamp(16px, 2vw, 24px);
  --max: 1280px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #121316; --ink: #ecede9; --muted: #9a9da3;
    --rule: #2b2d32; --accent: #8396ff; --track: #24262b;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #121316; --ink: #ecede9; --muted: #9a9da3;
  --rule: #2b2d32; --accent: #8396ff; --track: #24262b;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.55;
  font-variation-settings: "wdth" 100;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gap); }

.label {
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Header */
.site-head { border-bottom: 1px solid var(--ink); }
.site-head .wrap {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 16px; flex-wrap: wrap; padding-block: 18px;
}
.brand { font-weight: 700; text-decoration: none; letter-spacing: -0.01em; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 0.9375rem; }
.nav a { text-decoration: none; }
.nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; }
.ext::after { content: " \2197"; font-family: var(--mono); font-size: 0.8em; }

/* Hero */
.hero { padding-block: clamp(40px, 7vw, 96px) clamp(32px, 5vw, 64px); }
.hero h1 {
  margin: 0;
  font-size: var(--display);
  font-weight: 800;
  font-variation-settings: "wdth" 118;
  line-height: 0.86;
  letter-spacing: -0.045em;
  text-wrap: balance;
}
.hero .bar { height: 8px; background: var(--ink); margin-block: clamp(24px, 4vw, 48px); }
.hero .role { grid-column: 1 / span 4; font-size: var(--step-1); font-weight: 600; line-height: 1.3; margin: 0; letter-spacing: -0.01em; }
.hero .intro { grid-column: 5 / span 8; margin: 0; display: grid; gap: 16px; }
.hero .intro p { margin: 0; max-width: 62ch; }
.hero .intro .lead { font-size: var(--step-3); font-weight: 600; line-height: 1.12; letter-spacing: -0.025em; font-variation-settings: "wdth" 108; max-width: 22ch; text-wrap: balance; }
@media (min-width: 901px) { .hero .intro .lead { max-width: none; } }

/* Home profile list (label + statement rows) */
.profile { margin: 0; display: grid; border-top: 1px solid var(--ink); }
.profile > div { display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: var(--gap); padding-block: 14px; border-bottom: 1px solid var(--rule); }
.profile dt { padding-top: 3px; }
.profile dd { margin: 0; max-width: 66ch; }
.profile dd a { font-weight: 600; white-space: nowrap; }
@media (max-width: 560px) { .profile > div { grid-template-columns: minmax(0, 1fr); gap: 4px; } }

/* Feedback page */
.scores { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: clamp(32px, 5vw, 64px); }
.recs { list-style: none; margin: 0; padding: 0; row-gap: clamp(28px, 4vw, 44px); }
.recs li { grid-column: span 6; display: grid; align-content: start; gap: 12px; border-top: 2px solid var(--accent); padding-top: 16px; }
.recs p { margin: 0; max-width: 62ch; }
.recs footer { font-size: 0.875rem; color: var(--muted); }
.recs footer b { color: var(--ink); font-weight: 600; }
.client { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 8px var(--gap); padding-block: 20px; border-bottom: 1px solid var(--rule); }
.client > header { grid-column: 1 / span 3; min-width: 0; }
.client > header h3 { margin: 0; font-size: var(--step-1); font-weight: 700; letter-spacing: -0.015em; line-height: 1.2; }
.client > header .sub { color: var(--muted); font-size: 0.9375rem; }
.client ol { grid-column: 4 / -1; list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; min-width: 0; }
.client ol li { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: var(--gap); }
.client ol time { font-family: var(--mono); font-size: 0.8125rem; color: var(--muted); padding-top: 3px; font-variant-numeric: tabular-nums; }
.client ol p { margin: 0; max-width: 70ch; }

.facts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.facts li { display: grid; gap: 4px; padding-block: 16px; border-bottom: 1px solid var(--rule); }
.facts b { font-size: var(--step-3); font-weight: 700; line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.facts-row { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.facts-row li { padding-right: 12px; }

/* Sections */
section { padding-block: clamp(40px, 6vw, 80px); }
.sec-head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gap); align-items: baseline; border-top: 1px solid var(--ink); padding-top: 14px; margin-bottom: clamp(20px, 3vw, 36px); }
.sec-head h2 { grid-column: 1 / span 6; margin: 0; font-size: var(--step-2); font-weight: 700; letter-spacing: -0.02em; }
.sec-head .aside { grid-column: 7 / -1; justify-self: end; text-align: right; }

/* Work rows (home + projects) */
.rows { list-style: none; margin: 0; padding: 0; }
.row {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 8px var(--gap);
  padding-block: 18px; border-bottom: 1px solid var(--rule);
}
.row .yrs { grid-column: 1 / span 2; font-family: var(--mono); font-size: 0.875rem; font-variant-numeric: tabular-nums; padding-top: 3px; }
.row .who { grid-column: 3 / span 3; min-width: 0; }
.row .who h3 { margin: 0; font-size: var(--step-1); font-weight: 700; line-height: 1.2; letter-spacing: -0.015em; }
.row .who .sub { color: var(--muted); font-size: 0.9375rem; }
.row .what { grid-column: 6 / span 4; margin: 0; min-width: 0; max-width: 60ch; }
.row .stack { grid-column: 10 / span 3; min-width: 0; font-family: var(--mono); font-size: 0.8125rem; line-height: 1.6; color: var(--muted); overflow-wrap: anywhere; }
.row .stack .arrow { color: var(--accent); }
.row .span { grid-column: 3 / -1; }
.row blockquote { grid-column: 6 / -1; margin: 6px 0 0; padding-left: 16px; border-left: 2px solid var(--accent); max-width: 70ch; }
.row blockquote p { margin: 0 0 4px; font-size: 0.9375rem; }
.row blockquote footer { font-size: var(--step--1); color: var(--muted); }

.kind { display: inline-block; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--rule); padding: 1px 6px; margin-top: 6px; }

/* Time axis */
.axis { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gap); padding-bottom: 6px; border-bottom: 1px solid var(--ink); }
.axis .ticks { grid-column: 3 / -1; position: relative; height: 18px; }
.axis .ticks span { position: absolute; transform: translateX(-50%); font-family: var(--mono); font-size: 0.75rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.axis .lbl { grid-column: 1 / span 2; }
.track { position: relative; height: 6px; background: var(--track); }
.track i { position: absolute; top: 0; bottom: 0; background: var(--accent); min-width: 4px; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filters button {
  font: inherit; font-size: 0.875rem; cursor: pointer;
  background: transparent; color: var(--ink);
  border: 1px solid var(--ink); padding: 6px 12px;
}
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.filters button .n { font-family: var(--mono); font-size: 0.75rem; margin-left: 6px; opacity: 0.7; }

/* Quotes on home */
.quotes { list-style: none; margin: 0; padding: 0; }
.quotes li { grid-column: span 4; display: grid; align-content: start; gap: 14px; border-top: 2px solid var(--accent); padding-top: 16px; }
.quotes p { margin: 0; font-size: var(--step-1); line-height: 1.4; letter-spacing: -0.01em; text-wrap: pretty; }
.quotes footer { font-size: 0.875rem; color: var(--muted); }
.quotes footer b { color: var(--ink); font-weight: 600; }

/* Stack table */
.stack-table { margin: 0; }
.stack-table div { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gap); padding-block: 12px; border-bottom: 1px solid var(--rule); }
.stack-table dt { grid-column: 1 / span 3; }
.stack-table dd { grid-column: 4 / -1; margin: 0; }

.more { margin-top: 20px; font-weight: 600; }
.note { color: var(--muted); font-size: var(--step--1); margin-top: 16px; }

/* Footer */
.site-foot { border-top: 1px solid var(--ink); margin-top: clamp(24px, 4vw, 48px); }
.site-foot .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 24px 40px; font-size: 0.875rem; }
.site-foot nav { display: flex; gap: 20px; }

.by { display: block; margin-top: 4px; font-size: 0.875rem; color: var(--muted); }
.what b { font-weight: 600; }

/* Client marks: logo when available, monogram underneath as fallback */
.mark {
  position: relative; flex: none; display: inline-grid; place-items: center;
  width: 28px; height: 28px; overflow: hidden;
  background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 0.5625rem; font-weight: 500; letter-spacing: 0.02em;
}
.mark img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 2px; filter: grayscale(1) contrast(1.1); transition: filter .2s ease; }
li:hover .mark img, .client:hover .mark img, blockquote:hover .mark img { filter: none; }
.recs footer, .quotes footer, .row blockquote footer { display: flex; align-items: center; gap: 10px; }
.client > header { display: flex; align-items: flex-start; gap: 12px; }
.client > header .mark { width: 36px; height: 36px; font-size: 0.6875rem; }
@media (prefers-reduced-motion: reduce) { .mark img { transition: none; } }

/* Responsive */
@media (max-width: 900px) {
  .hero .role { grid-column: 1 / -1; }
  .hero .intro { grid-column: 1 / -1; }
  .facts-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row .yrs { grid-column: 1 / span 3; }
  .row .who { grid-column: 4 / -1; }
  .row .what, .row .stack, .row .span, .row blockquote { grid-column: 4 / -1; }
  .axis .lbl { grid-column: 1 / span 3; }
  .axis .ticks { grid-column: 4 / -1; }
  .quotes li { grid-column: 1 / -1; }
  .recs li { grid-column: 1 / -1; }
  .scores { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .client > header, .client ol { grid-column: 1 / -1; }
  .sec-head h2 { grid-column: 1 / -1; }
  .sec-head .aside { grid-column: 1 / -1; justify-self: start; text-align: left; }
}
@media (max-width: 560px) {
  .row .yrs, .row .who, .row .what, .row .stack, .row .span, .row blockquote { grid-column: 1 / -1; }
  .axis .lbl { display: none; }
  .axis .ticks { grid-column: 1 / -1; }
  .stack-table dt, .stack-table dd { grid-column: 1 / -1; }
  .client ol li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media (prefers-reduced-motion: no-preference) {
  .track i { transition: transform .5s ease; transform-origin: left; }
}