/* ============================================================
   KIFLP — shared design system
   Palette: warm ivory ground, charcoal/near-black ink, deep
   indigo accent used once (nav rule, links, small marks).
   Type: Fraunces (display serif) + Inter (body / labels).
   ============================================================ */

:root {
  --ivory: #f6f3ec;
  --paper: #fbf9f4;
  --charcoal: #2b2a27;
  --near-black: #17171a;
  --stone: #8a8577;
  --stone-light: #c9c3b4;
  --line: #ddd7c8;
  --indigo: #232f4d;
  --indigo-soft: #4a5a82;
  --indigo-tint: #eef0f5;
  --focus: #4a5a82;

  --bg: var(--ivory);
  --surface: var(--paper);
  --ink: var(--near-black);
  --ink-soft: var(--charcoal);
  --muted: var(--stone);
  --hairline: var(--line);
  --accent: var(--indigo);
  --accent-soft: var(--indigo-soft);
  --accent-tint: var(--indigo-tint);
  --on-accent: #f6f3ec;

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15151a;
    --surface: #1c1c22;
    --ink: #f2efe6;
    --ink-soft: #d9d5c8;
    --muted: #97917f;
    --hairline: #34332e;
    --accent: #97a6cf;
    --accent-soft: #7684a8;
    --accent-tint: #232a3a;
    --on-accent: #12141c;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #15151a;
  --surface: #1c1c22;
  --ink: #f2efe6;
  --ink-soft: #d9d5c8;
  --muted: #97917f;
  --hairline: #34332e;
  --accent: #97a6cf;
  --accent-soft: #7684a8;
  --accent-tint: #232a3a;
  --on-accent: #12141c;
  color-scheme: dark;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-inline: clamp(20px, 6vw, 88px);
}

img { max-width: 100%; display: block; }

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--ink);
  margin: 0;
  font-weight: 500;
  text-wrap: balance;
}

p { max-width: 62ch; margin: 0; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

/* ---------- focus ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 16px;
  z-index: 200;
  font-family: var(--sans);
  font-size: 0.85rem;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
}

/* ---------- header / nav ---------- */
.site-header {
  padding-block: 28px;
  border-bottom: 1px solid var(--hairline);
}

.header-row {
  max-width: 1240px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.15;
  display: flex;
  flex-direction: column;
}
.wordmark small {
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-top: 3px;
}

.primary-nav ul {
  list-style: none;
  display: flex;
  gap: clamp(18px, 2.6vw, 36px);
  margin: 0;
  padding: 0;
}

.primary-nav a {
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
}

.primary-nav a[aria-current="page"] {
  color: var(--accent);
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right 0.25s ease;
}
.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  right: 0;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 8px 12px;
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .primary-nav {
    display: none;
    width: 100%;
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul {
    flex-direction: column;
    gap: 4px;
    padding-top: 20px;
  }
  .primary-nav a {
    display: block;
    padding-block: 10px;
    border-bottom: 1px solid var(--hairline);
  }
  .header-row { flex-wrap: wrap; }
}

/* ---------- layout helpers ---------- */
.wrap {
  max-width: 1240px;
  margin-inline: auto;
}

.prose-wrap {
  max-width: 760px;
  margin-inline: auto;
}

section {
  padding-block: clamp(56px, 9vw, 120px);
  border-bottom: 1px solid var(--hairline);
}
section:last-of-type { border-bottom: none; }

.section-head {
  display: grid;
  grid-template-columns: minmax(140px, 220px) 1fr;
  gap: clamp(24px, 5vw, 64px);
  margin-bottom: clamp(32px, 5vw, 56px);
}
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; gap: 14px; }
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

/* ---------- hero ---------- */
.hero {
  padding-block: clamp(64px, 14vw, 140px) clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--hairline);
}

.hero-eyebrow {
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  max-width: 16ch;
}

.hero-tagline {
  margin-top: 28px;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--ink-soft);
  max-width: 46ch;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

.hero-meta {
  margin-top: 44px;
  display: flex;
  gap: clamp(28px, 6vw, 64px);
  flex-wrap: wrap;
}

.hero-meta div {
  border-top: 1px solid var(--hairline);
  padding-top: 12px;
  max-width: 220px;
}
.hero-meta p { font-size: 0.92rem; color: var(--muted); }

/* ---------- page header (interior pages) ---------- */
.page-hero {
  padding-block: clamp(48px, 9vw, 96px) clamp(32px, 6vw, 56px);
  border-bottom: 1px solid var(--hairline);
}
.page-hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  margin-top: 18px;
  max-width: 20ch;
}
.page-hero .lede {
  margin-top: 22px;
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 56ch;
}

/* ---------- principle / numbered list ---------- */
.principles {
  display: grid;
  gap: 0;
}
.principle {
  display: grid;
  grid-template-columns: minmax(90px, 140px) 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding-block: 36px;
  border-top: 1px solid var(--hairline);
}
.principle:last-child { border-bottom: 1px solid var(--hairline); }
@media (max-width: 620px) {
  .principle { grid-template-columns: 1fr; gap: 10px; }
}
.principle .num {
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--accent);
  line-height: 1;
}
.principle h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}
.principle p { color: var(--ink-soft); }

/* ---------- cards / grid ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(24px, 4vw, 56px);
}
@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: clamp(24px, 3vw, 40px);
}

.card h3 { font-size: 1.15rem; margin-bottom: 12px; }
.card p { color: var(--ink-soft); }

/* ---------- pull quote ---------- */
.pull-quote {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.35;
  color: var(--ink);
  border-left: 2px solid var(--accent);
  padding-left: clamp(20px, 3vw, 32px);
  max-width: 46ch;
  font-style: italic;
}

/* ---------- placeholder block ---------- */
.placeholder {
  border: 1px dashed var(--stone-light);
  background: var(--accent-tint);
  padding: clamp(28px, 4vw, 48px);
  text-align: left;
}
.placeholder .eyebrow { color: var(--accent-soft); }
.placeholder p { margin-top: 12px; color: var(--ink-soft); }
.placeholder p + p { margin-top: 8px; }

/* ---------- buttons / links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 14px 26px;
  border: 1px solid var(--ink);
  color: var(--ink);
  transition: background 0.2s ease, color 0.2s ease;
}
.btn:hover { background: var(--ink); color: var(--bg); }

.btn-accent {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}
.btn-accent:hover { background: var(--accent-soft); color: var(--on-accent); border-color: var(--accent-soft); }

.text-link {
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-underline-offset: 4px;
  font-weight: 600;
}
.text-link:hover { text-decoration-color: var(--accent); }

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 80px);
}
@media (max-width: 780px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-detail { margin-bottom: 28px; }
.contact-detail .eyebrow { margin-bottom: 8px; display: block; }
.contact-detail p { font-size: 1.05rem; color: var(--ink); }

.form-field {
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-field label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.form-field input,
.form-field textarea {
  font-family: var(--sans);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  background: var(--surface);
  color: var(--ink);
  border-radius: 2px;
}
.form-field textarea { resize: vertical; min-height: 130px; }

.form-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 6px;
  max-width: 50ch;
}

.form-success {
  border: 1px solid var(--hairline);
  background: var(--accent-tint);
  padding: 20px 24px;
  font-size: 0.95rem;
  color: var(--ink);
}

/* ---------- footer ---------- */
.site-footer {
  padding-block: 48px 60px;
  margin-top: 0;
}
.footer-grid {
  max-width: 1240px;
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.footer-nav ul {
  list-style: none;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}
.footer-nav a {
  text-decoration: none;
  font-size: 0.82rem;
  color: var(--muted);
}
.footer-nav a:hover { color: var(--ink); }

.footer-meta {
  font-size: 0.8rem;
  color: var(--muted);
  max-width: 40ch;
}
.footer-meta p + p { margin-top: 6px; }

/* ---------- reveal-on-scroll ---------- */
.reveal {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ---------- utility ---------- */
.mt-lg { margin-top: clamp(28px, 4vw, 44px); }
.center { text-align: center; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}