/* d++ — design + development. Vanilla static site.
   Design language: minimalist, professional, disciplined neo-brutalism.
   Monochrome warm paper + near-black ink + one electric accent.
   Hard 2px borders, a single offset shadow used sparingly, monospace labels. */

:root {
  --paper: #F3F1E9;
  --paper-2: #ECE9DF;
  --ink: #16150F;
  --ink-soft: #46443b;
  --accent: #FFD400;        /* yellow — fills / blocks only (button, chips) */
  --accent-ink: #16150F;    /* ink for text sitting ON yellow */
  --mark: var(--ink);       /* small text marks (kickers, numbers, underlines) stay ink so they never go faint on paper */

  --max: 1160px;
  --pad: clamp(1.25rem, 5vw, 3rem);
  --border: 2px solid var(--ink);
  --shadow: 7px 7px 0 var(--ink);
  --shadow-sm: 4px 4px 0 var(--ink);

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121210;
    --paper-2: #1b1a17;
    --ink: #ECEAE0;
    --ink-soft: #a8a598;
    --accent: #FFD400;
    --accent-ink: #16150F;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---- skip link ---- */
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: .6rem 1rem; font-family: var(--mono); font-size: .8rem; z-index: 100;
}
.skip:focus { left: 0; }

/* ---- layout ---- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }

section { padding-block: clamp(3.5rem, 9vw, 7rem); }
.section-line { border-top: var(--border); }

/* ---- type ---- */
h1, h2, h3 { font-weight: 800; letter-spacing: -0.02em; line-height: 1.04; margin: 0; }
h1 { font-size: clamp(2.6rem, 7vw, 5rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.6rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.01em; }
p { margin: 0 0 1.1rem; max-width: 62ch; color: var(--ink-soft); }
p.lead { font-size: clamp(1.15rem, 2.4vw, 1.5rem); line-height: 1.5; color: var(--ink); max-width: 44ch; }
a { color: var(--ink); text-underline-offset: 3px; }

.kicker {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-block;
  margin-bottom: 1.4rem;
}
.kicker::before { content: "// "; color: var(--mark); }

/* ---- header ---- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--pad);
  background: var(--paper);
  border-bottom: var(--border);
}
.wordmark {
  font-weight: 800; font-size: 1.5rem; letter-spacing: -0.04em;
  text-decoration: none; color: var(--ink); line-height: 1;
}
.wordmark .pp { background: var(--accent); color: var(--accent-ink); padding: 0 .1em; margin-left: .04em; }

.nav { display: flex; align-items: center; gap: 1.5rem; }
.nav a {
  font-family: var(--mono); font-size: .82rem; letter-spacing: 0.04em;
  text-transform: uppercase; text-decoration: none; color: var(--ink);
  padding-bottom: 3px; border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--ink); }

.nav-toggle {
  display: none;
  font-family: var(--mono); font-size: .8rem; text-transform: uppercase;
  background: var(--paper); color: var(--ink); border: var(--border);
  padding: .4rem .7rem; cursor: pointer;
}

/* ---- buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--mono); font-size: .85rem; letter-spacing: 0.03em;
  text-transform: uppercase; text-decoration: none;
  padding: .85rem 1.4rem; border: var(--border); background: var(--paper);
  color: var(--ink); box-shadow: var(--shadow-sm); cursor: pointer;
  transition: transform .08s ease, box-shadow .08s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--ink); }

/* ---- hero ---- */
.hero { padding-block: clamp(4rem, 12vw, 9rem); }
.hero h1 { max-width: 18ch; }
.hero .lead { margin-top: 1.6rem; }
.hero .actions { margin-top: 2.4rem; display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---- capability grid ---- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: var(--border); background: var(--ink); }
.grid .card { background: var(--paper); padding: clamp(1.5rem, 3vw, 2.25rem); display: flex; flex-direction: column; gap: .6rem; }
.card .num { font-family: var(--mono); font-size: .78rem; color: var(--mark); letter-spacing: .1em; }
.card p { margin: 0; }

/* ---- generic bordered block ---- */
.slab { border: var(--border); background: var(--paper-2); box-shadow: var(--shadow); padding: clamp(1.75rem, 4vw, 3rem); }

/* ---- two-column ---- */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }

/* ---- principles list ---- */
.principles { list-style: none; margin: 0; padding: 0; border-top: var(--border); }
.principles li {
  border-bottom: var(--border); padding: 1.1rem 0;
  display: grid; grid-template-columns: 3.2rem 1fr; gap: 1rem; align-items: baseline;
}
.principles .idx { font-family: var(--mono); color: var(--mark); font-size: .85rem; }
.principles b { font-weight: 800; letter-spacing: -0.01em; }
.principles span.desc { display: block; color: var(--ink-soft); font-size: .98rem; margin-top: .15rem; }

/* ---- contact form ---- */
.form { display: grid; gap: 1.2rem; }
.field { display: grid; gap: .5rem; }
.field label { font-family: var(--mono); font-size: .76rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-soft); }
.field input, .field textarea {
  font-family: var(--sans); font-size: 1rem; color: var(--ink);
  background: var(--paper); border: var(--border); padding: .8rem .9rem;
  width: 100%; border-radius: 0;
}
.field input:focus, .field textarea:focus { outline: 3px solid var(--ink); outline-offset: 2px; }
.field textarea { min-height: 9rem; resize: vertical; }

/* honeypot — visually and functionally hidden from real users, present for bots */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.contact-meta { display: grid; gap: 1.4rem; align-content: start; }
.contact-meta .row { border-top: var(--border); padding-top: .8rem; }
.contact-meta .row .k { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-soft); }
.contact-meta .row .v { font-size: 1.1rem; font-weight: 600; }
.contact-meta a { text-decoration-color: var(--ink); }

/* ---- footer ---- */
.site-footer {
  border-top: var(--border);
  font-family: var(--mono); font-size: .8rem;
  display: flex; flex-wrap: wrap; gap: .6rem 2rem; justify-content: space-between;
  padding: 1.6rem var(--pad);
  color: var(--ink-soft);
}
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

/* ---- responsive ---- */
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .cols { grid-template-columns: 1fr; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper); border-bottom: var(--border);
  }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 1rem var(--pad); border-bottom: 2px solid var(--ink); }
  .nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--ink); background: var(--accent); color: var(--accent-ink); }
  .site-header { position: relative; }
  .nav-toggle { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}