/* ==========================================================================
   Haider & Sons Co. — Stylesheet
   A bookkeeping/tax firm site styled like a well-kept ledger book:
   hairline rules, tabular figures, and numbered entries throughout.
   ========================================================================== */

:root {
  --paper: #fafaf8;
  --surface: #f1eee7;
  --ink: #121212;
  --ink-soft: #57554f;
  --ink-faint: #8c8a82;
  --line: #d9d6cc;
  --line-strong: #121212;
  --max: 1120px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

h1, h2, h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.01em;
}

h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.25rem; font-weight: 600; }

p { margin: 0 0 1rem; color: var(--ink-soft); }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.9rem;
}

.tnum { font-family: 'IBM Plex Mono', monospace; font-feature-settings: "tnum"; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.95rem 1.5rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  transition: background 0.18s ease, color 0.18s ease;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--ink-soft); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

.cta-row { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 2.2rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  font-weight: 500;
}
.wordmark .mark {
  display: inline-block;
  width: 18px;
  height: 14px;
  position: relative;
}
.wordmark .mark::before,
.wordmark .mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ink);
}
.wordmark .mark::before { top: 0; width: 100%; }
.wordmark .mark::after { bottom: 0; width: 65%; }

.primary-nav { display: flex; gap: 2rem; }
.primary-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.primary-nav a:hover,
.primary-nav a[aria-current="page"] { color: var(--ink); border-color: var(--ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 1.5px; background: var(--ink); width: 100%; }

.mobile-nav {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--line);
  padding: 0.5rem var(--gutter) 1rem;
}
.mobile-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}
.mobile-nav a[aria-current="page"] { color: var(--ink); }

@media (max-width: 760px) {
  .primary-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-header.is-open .mobile-nav { display: flex; }
}

/* ---------- Page header (non-home pages) ---------- */
.page-header {
  padding: 4.5rem 0 3rem;
  border-bottom: 1px solid var(--line);
}
.page-header h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
.page-header .lede { max-width: 38ch; margin-top: 1.1rem; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 5.5rem 0 4.5rem;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 41px,
    var(--line) 42px
  );
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 75%, transparent);
  opacity: 0.7;
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 760px; }
.hero .eyebrow { display: flex; align-items: center; gap: 0.6rem; }
.hero .eyebrow .no { color: var(--ink); }
.hero h1 {
  font-size: clamp(2.6rem, 6.2vw, 4.6rem);
  margin-bottom: 1.4rem;
}
.hero h1 em {
  font-style: italic;
  font-weight: 400;
}
.hero .rule {
  width: 120px;
  height: 3px;
  background: var(--ink);
  margin: 1.6rem 0 1.6rem;
}
.hero .lede { max-width: 46ch; font-size: 1.1rem; }

/* ---------- Sections ---------- */
section { padding: 4.5rem 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.5rem;
}
.section-head .link { font-family: 'IBM Plex Mono', monospace; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--ink); }
.alt { background: var(--surface); }

/* ---------- Ledger table (signature component) ---------- */
.ledger { border-top: 1px solid var(--line-strong); }
.ledger-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 1.6rem;
  padding: 1.9rem 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.18s ease;
}
.ledger-row:hover { background: var(--surface); }
.ledger-row .no {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--ink-faint);
  font-size: 0.85rem;
  padding-top: 0.2rem;
}
.ledger-row .entry h3 { margin-bottom: 0.5rem; }
.ledger-row .entry p { max-width: 56ch; }
.ledger-row.stat { grid-template-columns: 3.2rem 1fr auto; align-items: baseline; }
.ledger-row.stat .figure { font-family: 'IBM Plex Mono', monospace; font-size: 1.6rem; }

@media (max-width: 600px) {
  .ledger-row { grid-template-columns: 2.4rem 1fr; }
  .ledger-row.stat { grid-template-columns: 2.4rem 1fr; }
  .ledger-row.stat .figure { grid-column: 2; padding-top: 0.4rem; }
}

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Process steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.step { background: var(--paper); padding: 2rem 1.6rem; }
.step .no { font-family: 'IBM Plex Mono', monospace; color: var(--ink-faint); font-size: 0.85rem; }
.step h3 { margin: 0.8rem 0 0.6rem; font-size: 1.05rem; }
@media (max-width: 760px) {
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
}

/* ---------- Cards (values grid) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}
.card { border-top: 2px solid var(--ink); padding-top: 1.4rem; }
.card h3 { margin-bottom: 0.6rem; }
@media (max-width: 760px) {
  .cards { grid-template-columns: 1fr; gap: 2rem; }
}

/* ---------- Pull quote ---------- */
.pull-quote {
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.4;
  border-left: 2px solid var(--ink);
  padding-left: 1.6rem;
  margin: 2rem 0;
  max-width: 44ch;
}
.pull-quote cite {
  display: block;
  font-style: normal;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 1rem;
}

/* ---------- Two-column layout ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
}

/* ---------- Timeline ---------- */
.timeline-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1.6rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--line);
}
.timeline-row .year { font-family: 'IBM Plex Mono', monospace; font-size: 1rem; color: var(--ink); }
.timeline-row:first-child { border-top: 1px solid var(--line-strong); }
@media (max-width: 540px) {
  .timeline-row { grid-template-columns: 4.5rem 1fr; }
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--ink);
  color: var(--paper);
}
.cta-banner h2 { color: var(--paper); }
.cta-banner p { color: #cfcdc6; }
.cta-banner .btn-primary { background: var(--paper); color: var(--ink); }
.cta-banner .btn-primary:hover { background: #e3e1d9; }
.cta-banner .btn-ghost { border-color: var(--paper); color: var(--paper); }
.cta-banner .btn-ghost:hover { background: var(--paper); color: var(--ink); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 5vw, 4rem);
}
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-list .ledger-row { grid-template-columns: 1fr; }
.contact-list .eyebrow { margin-bottom: 0.3rem; }
.contact-list a { font-size: 1.05rem; }

.field { margin-bottom: 1.4rem; }
.field label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  padding: 0.7rem 0.1rem;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--ink);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--ink);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 0.85rem; color: var(--ink-faint); margin-top: 1rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line-strong); margin-top: 2rem; }
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem var(--gutter) 2.5rem;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 2rem;
}
.footer-block .wordmark.small { font-size: 0.8rem; margin-bottom: 0.8rem; }
.footer-block p { font-size: 0.9rem; }
.footer-block a:hover { color: var(--ink); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 1.2rem var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}
.footer-bottom p { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--ink-faint); margin: 0; }
@media (max-width: 700px) {
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}