/* ==========================================================================
   Hummel LLC — site.css
   No-build static site. Mobile-first, accessible, zero JS required.
   Brand treatment: P-A "Slate & Sage" (site-copy §4) — ink #232B36,
   paper #FAF8F4, accent #3E6B4F (CTAs/links only), mono for eyebrows.
   Swap tokens here if the style lock (HUM-6) lands on P-B instead.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --color-paper: #FAF8F4;            /* warm off-white */
  --color-surface: #EFEAE1;          /* warm band */
  --color-ink: #232B36;              /* slate navy */
  --color-ink-soft: #4A5561;
  --color-accent: #3E6B4F;           /* deep sage green — CTAs/links only */
  --color-accent-ink: #FFFFFF;
  --color-line: #D6CFC2;
  --color-focus: #3E6B4F;
  --radius: 10px;
  --space: 1rem;
  --content-max: 64rem;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --leading: 1.6;
}

/* ---------- Reset / base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: var(--leading);
  color: var(--color-ink);
  background: var(--color-paper);
  font-size: 1.0625rem; /* 17px — brand read size */
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Visible keyboard focus everywhere */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection { background: var(--color-accent); color: var(--color-accent-ink); }

img { max-width: 100%; height: auto; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space);
}

@media (min-width: 48rem) {
  .container { padding-inline: 2rem; }
}

/* ---------- Skip link (keyboard/a11y first) ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius) 0;
  text-decoration: none;
}
.skip-link:focus {
  left: 0;
  top: 0;
}

/* ---------- Header / nav ---------- */
.site-header {
  border-block-end: 1px solid var(--color-line);
  background: var(--color-paper);
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-ink);
}
.brand img {
  display: block;
  height: 2.9rem;         /* final logo (brief rev 4): stacked mark + wordmark */
  width: auto;
  max-width: 220px;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding-block: 0.9rem;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.35rem;
}

.main-nav a {
  display: inline-block;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius);
  color: var(--color-ink);
  text-decoration: none;
  font-size: 0.975rem;
  font-weight: 500;
}
.main-nav a:hover { background: var(--color-surface); }
.main-nav a[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 600;
}
.main-nav a[aria-current="page"]:hover { background: var(--color-accent); }

/* ---------- Typography ---------- */
h1, h2, h3 {
  line-height: 1.22;
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.125rem; }

.lead {
  font-size: clamp(1.1rem, 2.3vw, 1.32rem);
  color: var(--color-ink);
  max-width: 44rem;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);  /* mono only for eyebrows — brand §4 */
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin: 0 0 0.75rem;
}

/* ---------- Buttons / links ---------- */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  text-decoration: none;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary {
  background: transparent;
  color: var(--color-ink);
  box-shadow: inset 0 0 0 1.5px var(--color-ink);
}
.btn.secondary:hover { background: var(--color-surface); filter: none; }

a { color: var(--color-accent); text-underline-offset: 0.15em; }

/* ---------- Cards / bands / sections ---------- */
.band {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  margin-block: 1.5rem;
}

.section-block { margin-block: 2.75rem; }
.section-block h2 { margin-block-start: 0; }

.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 44rem) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 60rem) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.card h3 { margin-block-start: 0; }
.card p { margin-block-end: 0; }

/* Strip of four (home) */
.strip {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-block: 1.25rem;
}
@media (min-width: 44rem) { .strip { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .strip { grid-template-columns: repeat(4, 1fr); } }

.strip-item .strip-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 600;
  display: block;
  margin-block-end: 0.35rem;
}
.strip-item p { margin-block: 0.35rem 0; }

/* Numbered process steps (how-it-works) */
.steps { list-style: none; margin: 1.25rem 0 0; padding: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem 1.1rem;
  padding-block: 1.25rem;
  border-block-end: 1px solid var(--color-line);
}
.steps li:first-child { padding-block-start: 0; }
.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-paper);
  background: var(--color-accent);
  border-radius: 6px;
  padding: 0.28rem 0.5rem;
  align-self: start;
  line-height: 1.4;
}
.steps h3 { margin-block: 0 0.35rem; }
.steps p { margin-block: 0; }

/* ---------- Lists ---------- */
ul.tick { list-style: none; padding-inline-start: 0.2rem; }
ul.tick li {
  padding-inline-start: 1.9rem;
  position: relative;
  margin-block: 0.6rem;
}
ul.tick li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}
ul.plain { list-style: disc; padding-inline-start: 1.4rem; }
ul.plain li { margin-block: 0.45rem; }
ul.plain li::marker { color: var(--color-accent); }

/* ---------- Hero (home) ---------- */
.hero {
  padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(180deg, var(--color-paper) 0%, var(--color-surface) 100%);
}
.hero h1 { margin-block-end: 1rem; }
.hero .lead { margin-block-end: 0; }
.hero .actions { margin-block-start: 1.9rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- Footer (same on every page) ---------- */
.site-footer {
  border-block-start: 1px solid var(--color-line);
  padding-block: 2.25rem 3rem;
  margin-block-start: 3.5rem;
  font-size: 0.925rem;
  color: var(--color-ink-soft);
}
.site-footer .container { display: flex; flex-direction: column; gap: 0.4rem; }
.site-footer .honesty {
  color: var(--color-ink);
  font-size: 0.95rem;
}
.site-footer a { color: var(--color-ink-soft); }

/* ---------- Page hero for inner pages ---------- */
.page-head { padding-block: 2.5rem 1rem; }
.page-head h1 { margin-block-end: 0.7rem; }

/* ---------- Contact form (engage) ---------- */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: grid;
  gap: 1.1rem;
  max-width: 40rem;
}
.contact-form label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
}
.contact-form label .req { color: var(--color-accent); }
.contact-form label .opt {
  font-weight: 400;
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}
.contact-form input,
.contact-form textarea {
  font: inherit;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  width: 100%;
}
.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 1px;
  border-color: var(--color-accent);
}
.contact-form textarea { min-height: 8rem; resize: vertical; }
.contact-form .form-status {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  min-height: 1.4em;
}

/* ---------- Utilities ---------- */
.muted { color: var(--color-ink-soft); }
.note {
  border-inline-start: 3px solid var(--color-accent);
  background: var(--color-surface);
  padding: 0.85rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
}
.mt-0 { margin-block-start: 0; }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}
.mb-0 { margin-block-end: 0; }
.prose { max-width: 46rem; } /* comfortable reading measure for long paragraphs */
.actions { margin-block-start: 1.5rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }