/* DSConcepts landing page
 * Palette and type follow the DSConcepts Brand Guidelines v1.0:
 * Ledger Navy dominates, Paper is the background, Slate for secondary
 * text, Brass Gold only as an accent (rules, checkmarks, small emphasis). */

:root {
  --navy: #0E2A47;
  --navy-75: #4A5F75;
  --navy-10: #E7EAED;
  --navy-deep: #0A2038;
  --gold: #C0913F;
  --gold-light: #D8B876;
  --gold-10: #F9F4EC;
  --slate: #5B6B79;
  --paper: #F6F3EC;
  --white: #FFFFFF;
  --ink: #0E2A47;
  --line: #E3DDD0;

  --sans: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Lora", Georgia, "Times New Roman", serif;

  --radius: 10px;
  --shadow: 0 1px 2px rgba(14, 42, 71, .06), 0 12px 32px rgba(14, 42, 71, .10);
  --container: 1160px;
  --gutter: 24px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.5rem); font-weight: 700; text-wrap: balance; }
h3 { font-size: 1.08rem; font-weight: 600; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
@media (max-width: 600px) { :root { --gutter: 16px; } }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 100;
  background: var(--navy); color: var(--white); padding: 8px 14px; border-radius: 6px;
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ---------- Eyebrows / small type ---------- */
.eyebrow {
  font-size: .78rem; font-weight: 500; letter-spacing: .18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 14px;
  display: flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--gold); flex: none; }
.eyebrow-light { color: var(--gold-light); }
.eyebrow-light::before { background: var(--gold-light); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 .95rem/1 var(--sans); text-decoration: none; cursor: pointer;
  padding: 15px 24px; border-radius: 8px; border: 1.5px solid transparent;
  transition: background-color .18s, color .18s, border-color .18s, transform .18s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-sm { padding: 9px 16px; font-size: .88rem; }
.btn-block { width: 100%; }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-deep); }
.btn-outline { border-color: var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-ghost { color: var(--navy); padding-left: 8px; padding-right: 8px; }
.btn-ghost:hover { color: var(--gold); }
.btn-gold { background: var(--gold); color: var(--navy); font-weight: 600; }
.btn-gold:hover { background: var(--gold-light); }
.btn-ghost-light { color: var(--white); border-color: rgba(255,255,255,.35); }
.btn-ghost-light:hover { border-color: var(--white); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 44px; height: 44px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.wordmark { font-weight: 500; font-size: 1.45rem; letter-spacing: -0.01em; color: var(--navy); margin: 0; line-height: 1; }
.wordmark b { font-weight: 700; }
.wordmark-light { color: var(--white); }
.brand-tag {
  font-weight: 300; font-size: .56rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--slate); margin-top: 6px;
}

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a:not(.btn) {
  text-decoration: none; font-size: .93rem; font-weight: 500; color: var(--navy);
  position: relative; padding: 6px 0;
}
.site-nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--gold); transition: right .2s;
}
.site-nav a:not(.btn):hover::after { right: 0; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer;
  position: relative;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  position: absolute; left: 11px; width: 22px; height: 2px; background: var(--navy);
  transition: transform .2s, top .2s, opacity .2s;
}
.nav-toggle-bar { top: 21px; }
.nav-toggle-bar::before, .nav-toggle-bar::after { content: ""; left: 0; }
.nav-toggle-bar::before { top: -7px; }
.nav-toggle-bar::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 76px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 20px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .site-nav a:not(.btn)::after { display: none; }
  .site-nav .btn { margin-top: 16px; }
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 400px at 85% 10%, var(--gold-10), transparent 70%),
    var(--paper);
  padding: clamp(56px, 8vw, 110px) 0 clamp(64px, 8vw, 110px);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.hero h1 {
  font-size: clamp(2.3rem, 1.4rem + 3.4vw, 3.9rem);
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.08;
  margin-bottom: 24px; text-wrap: balance;
}
.h1-accent { display: block; color: var(--navy-75); font-weight: 600; }
.lede { font-size: 1.12rem; color: var(--slate); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: center; }
.hero-points {
  list-style: none; padding: 0; margin: 40px 0 0;
  display: flex; flex-wrap: wrap; gap: 10px 28px;
  font-size: .9rem; color: var(--slate);
}
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points li::before {
  content: ""; width: 14px; height: 8px; flex: none;
  border-left: 2.4px solid var(--gold); border-bottom: 2.4px solid var(--gold);
  transform: rotate(-45deg) translateY(-2px);
}

/* Ledger card illustration */
.hero-visual { position: relative; isolation: isolate; }
.ledger-card {
  background: var(--white); border-radius: 14px; box-shadow: var(--shadow);
  border: 1px solid var(--line); padding: 26px 26px 22px;
  font-size: .86rem; position: relative;
}
.ledger-card::before {
  content: ""; position: absolute; inset: 18px -18px -18px 18px; z-index: -1;
  border: 1.5px solid var(--gold); border-radius: 14px; opacity: .5;
}
.ledger-head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-weight: 600; font-size: 1rem; padding-bottom: 14px;
  border-bottom: 2px solid var(--navy); margin-bottom: 6px;
}
.ledger-period { font-weight: 400; font-size: .78rem; color: var(--slate); }
.ledger-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.ledger-table th {
  text-align: left; font-weight: 500; font-size: .72rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--slate); padding: 10px 0 8px;
}
.ledger-table td { padding: 9px 0; border-bottom: 1px solid var(--navy-10); }
.ledger-table th:not(:first-child), .ledger-table td:not(:first-child) { text-align: right; padding-left: 12px; }
.ledger-table tfoot td {
  font-weight: 600; border-bottom: 0; padding-top: 12px;
  border-top: 1px solid var(--navy); box-shadow: inset 0 -4px 0 -1px var(--white), inset 0 -5px 0 -1px var(--navy);
}
.ledger-stamp {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 18px;
  color: var(--gold); font-weight: 600; font-size: .82rem; letter-spacing: .04em;
  border: 1.5px solid var(--gold); border-radius: 999px; padding: 6px 14px 6px 10px;
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 520px; margin-right: 18px; }
}
@media (max-width: 480px) {
  .ledger-card { padding: 20px 16px 18px; font-size: .78rem; }
  .ledger-card::before { inset: 12px -12px -12px 12px; }
  .hero-visual { margin-right: 12px; }
}

/* ---------- Audience strip ---------- */
.audience { background: var(--navy); color: var(--white); }
.audience-inner {
  display: flex; align-items: center; gap: 12px 32px; flex-wrap: wrap;
  padding-top: 22px; padding-bottom: 22px;
}
.audience-label {
  font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--gold-light); font-weight: 500;
}
.audience ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px 16px; font-weight: 500; font-size: .95rem;
}
.audience li + li::before { content: "·"; color: var(--gold); margin-right: 16px; }
@media (max-width: 600px) { .audience ul { flex-direction: column; } .audience li + li::before { content: none; } }

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 9vw, 120px) 0; }
.section-paper { background: var(--paper); }
.section-navy { background: var(--navy); color: var(--white); }
.section-head { max-width: 720px; margin-bottom: 56px; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 72px; align-items: start; }
.about-copy h2 { margin-bottom: 26px; }
.about-copy p { color: var(--slate); font-size: 1.02rem; }
.stats { margin: 0 0 32px; display: grid; gap: 0; }
.stats div { display: flex; align-items: baseline; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.stats div:first-child { border-top: 2px solid var(--navy); }
.stats dt { font-size: 2.1rem; font-weight: 700; min-width: 128px; letter-spacing: -0.02em; }
.stats dd { margin: 0; color: var(--slate); font-size: .95rem; }
.mission {
  margin: 0; padding: 26px 28px; background: var(--paper); border-radius: var(--radius);
  border-left: 3px solid var(--gold);
}
.mission figcaption {
  font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--slate); font-weight: 500; margin-bottom: 10px;
}
.mission blockquote { margin: 0; font-family: var(--serif); font-style: italic; font-size: 1.14rem; line-height: 1.6; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
}

/* Services */
.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service {
  background: var(--white); border-radius: var(--radius); padding: 30px 26px 28px;
  border: 1px solid var(--line); border-top: 3px solid var(--navy);
  transition: border-top-color .2s, box-shadow .2s, transform .2s;
}
.service:hover { border-top-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-3px); }
.service-num { display: block; font-size: .8rem; font-weight: 600; color: var(--gold); letter-spacing: .1em; margin-bottom: 22px; }
.service h3 { margin-bottom: 12px; font-size: 1.12rem; }
.service p { color: var(--slate); font-size: .94rem; margin: 0; }

@media (max-width: 1040px) { .services { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .services { grid-template-columns: 1fr; } }

/* Product */
.product-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: center; }
.product-copy h2 { font-size: clamp(2.2rem, 1.5rem + 2.4vw, 3.2rem); margin-bottom: 20px; }
.product-lede { color: rgba(255,255,255,.78); font-size: 1.08rem; margin-bottom: 34px; }
.features {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: rgba(255,255,255,.12); border-radius: var(--radius); overflow: hidden;
}
.features li { background: var(--navy); padding: 28px 26px; }
.features h3 { color: var(--white); margin-bottom: 10px; display: flex; gap: 10px; align-items: flex-start; }
.features h3::before {
  content: ""; width: 12px; height: 7px; flex: none; margin-top: .42em;
  border-left: 2.2px solid var(--gold); border-bottom: 2.2px solid var(--gold);
  transform: rotate(-45deg);
}
.features p { color: rgba(255,255,255,.7); font-size: .93rem; margin: 0; }

@media (max-width: 960px) { .product-grid { grid-template-columns: 1fr; gap: 48px; } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

/* Why */
.why {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  border-top: 2px solid var(--navy);
}
.why li { padding: 28px 24px 8px 0; }
.why li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.why h3 { margin-bottom: 10px; }
.why p { color: var(--slate); font-size: .93rem; margin: 0; }

@media (max-width: 1040px) {
  .why { grid-template-columns: repeat(2, 1fr); }
  .why li, .why li + li { padding: 24px 24px 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .why li:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .why { grid-template-columns: 1fr; }
  .why li:nth-child(even) { padding-left: 0; border-left: 0; }
}

/* Contact */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.contact-copy h2 { margin-bottom: 10px; }
.tagline { font-family: var(--serif); font-style: italic; font-size: 1.3rem; color: var(--gold); margin-bottom: 24px; }
.contact-copy > p:not(.tagline):not(.eyebrow) { color: var(--slate); }
.contact-list { list-style: none; padding: 0; margin: 34px 0 0; border-top: 2px solid var(--navy); }
.contact-list li { display: grid; grid-template-columns: 90px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-label { font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--slate); padding-top: 4px; }
.contact-list a { text-decoration: none; font-weight: 500; overflow-wrap: anywhere; }
.contact-list a:hover { color: var(--gold); }

.contact-form {
  background: var(--white); border-radius: 14px; padding: 36px; box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .85rem; font-weight: 500; margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; font: 400 .97rem/1.4 var(--sans); color: var(--ink);
  background: var(--white); border: 1.5px solid #D6D0C2; border-radius: 8px;
  padding: 12px 14px; transition: border-color .15s, box-shadow .15s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(14,42,71,.12);
}
.field [aria-invalid="true"] { border-color: #B3261E; }
.field-error { color: #B3261E; font-size: .8rem; margin: 6px 0 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 14px 0 0; font-size: .9rem; min-height: 1.4em; }
.form-status.ok { color: #1F6B45; }
.form-status.err { color: #B3261E; }

@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; gap: 48px; } }
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 18px; }
}

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.72); font-size: .92rem; }
.footer-grid {
  display: grid; grid-template-columns: 1.2fr 1fr 1.2fr; gap: 40px;
  padding-top: 64px; padding-bottom: 48px;
}
.footer-brand { display: flex; gap: 14px; align-items: center; }
.footer-brand img { width: 44px; height: 44px; }
.footer-tag { font-family: var(--serif); font-style: italic; margin: 8px 0 0; color: var(--gold-light); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a, .footer-contact a { text-decoration: none; }
.footer-links a:hover, .footer-contact a:hover { color: var(--gold-light); }
.footer-contact { font-style: normal; display: flex; flex-direction: column; gap: 10px; overflow-wrap: anywhere; }
.footer-bottom {
  border-top: 1px solid rgba(192,145,63,.35);
  padding-top: 22px; padding-bottom: 26px; font-size: .82rem;
}
.footer-bottom p { margin: 0; }

@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .service { transition: none; }
}