/* ============ BREVITAS BRAND, V2 ============ */

:root {
  --ink: #0A0A12;
  --surface: #10101B;
  --elev: #141420;
  --line: rgba(233, 232, 242, 0.08);
  --line-strong: rgba(233, 232, 242, 0.14);
  --text: #E9E8F2;
  --muted: rgba(233, 232, 242, 0.58);
  --faint: rgba(233, 232, 242, 0.4);
  --acc: #6366F1;
  --acc-hi: #7D7CF8;
  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--muted);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--muted);
  text-decoration-color: rgba(125, 124, 248, 0.4);
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
a:hover { color: var(--text); }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--text);
  line-height: 1.25;
  margin: 0 0 0.7em;
}
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); letter-spacing: 0.1em; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); letter-spacing: 0.12em; }
h3 { font-size: 1.02rem; letter-spacing: 0.12em; margin-bottom: 0.5em; }

p { margin: 0 0 1.2em; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 28px; }
.narrow { max-width: 680px; }
.center { text-align: center; }
.hidden { display: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 99;
  background: var(--acc); color: #fff;
  padding: 0.7em 1.2em; border-radius: 0 0 8px 0;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
}
.skip-link:focus { left: 0; }

.kicker {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.7rem;
  color: var(--faint);
  margin-bottom: 1.4em;
}
.kicker strong { color: var(--acc); font-weight: 600; }
.small { font-size: 0.85rem; }
.muted { color: var(--muted); }

/* ============ HEADER / NAV ============ */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 18, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.brand { display: flex; align-items: center; gap: 13px; text-decoration: none; }
.brand-mark { width: 36px; height: 36px; border-radius: 50%; }
.brand-name {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}
@media (max-width: 420px) { .brand-name { letter-spacing: 0.18em; font-size: 0.85rem; } }
.footer-brand { margin: 0 0 0.5em; }

.site-nav { display: flex; align-items: center; gap: 36px; }
.site-nav a {
  position: relative;
  text-decoration: none;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  color: var(--faint);
  padding: 6px 0;
}
.site-nav a:hover { color: var(--text); }
.site-nav a[aria-current="page"] { color: var(--text); }
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--acc);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer; padding: 10px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ BUTTONS ============ */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
  text-decoration: none;
  border-radius: 999px;
  padding: 1.1em 2.2em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn-solid { background: var(--acc); color: #fff; }
.btn-solid:hover { background: var(--acc-hi); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: rgba(125, 124, 248, 0.35); color: var(--muted); }
.btn-ghost:hover { border-color: var(--acc); color: var(--text); transform: translateY(-1px); }

/* ============ HERO ============ */

.hero {
  position: relative;
  min-height: 94vh;
  display: flex;
  align-items: center;
  padding: 150px 0 130px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(10, 10, 18, 0.58) 0%, rgba(10, 10, 18, 0.86) 72%, var(--ink) 100%),
    url("../assets/brevitas-hero.png") center 30% / cover no-repeat;
}
.hero-sub { max-width: 620px; font-size: 1.2rem; margin-bottom: 2.4em; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.page-hero {
  position: relative;
  padding: 150px 0 110px;
  border-bottom: 1px solid var(--line);
}
.page-hero .lead { max-width: 640px; font-size: 1.15rem; }
.page-hero-philosophy {
  background:
    linear-gradient(180deg, rgba(10, 10, 18, 0.62) 0%, rgba(10, 10, 18, 0.9) 100%),
    url("../assets/brevitas-lamp.png") center 40% / cover no-repeat;
}
.page-hero-partnerships {
  background:
    linear-gradient(180deg, rgba(10, 10, 18, 0.62) 0%, rgba(10, 10, 18, 0.9) 100%),
    url("../assets/brevitas-desk.png") center 45% / cover no-repeat;
}

/* ============ SECTIONS ============ */

.section { padding: 128px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 620px; margin-bottom: 64px; }
.section-head p { margin-bottom: 0; }

.lead-paragraph { max-width: 640px; font-size: 1.08rem; }

.big-quote {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.5;
  max-width: 780px;
  margin: 0 auto 1.4em;
}

/* Trust band */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.trust-item { border-top: 1px solid var(--line-strong); padding-top: 26px; }
.trust-item p { margin: 0; }

/* Hairline rows */
.rows { max-width: 820px; margin: 0 auto; }
.row-item { padding: 30px 0; border-bottom: 1px solid var(--line); }
.row-item:first-child { border-top: 1px solid var(--line); }
.row-item:last-child { border-bottom: 0; }
.row-item .row-num {
  font-family: var(--font-head);
  letter-spacing: 0.2em;
  font-size: 0.66rem;
  color: var(--acc);
  display: block;
  margin-bottom: 10px;
}
.row-item p { margin: 0; max-width: 56ch; }

/* Partnership card */
.partner-card {
  background: var(--elev);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  padding: 48px 48px 44px;
  max-width: 760px;
}
.partner-label {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.66rem;
  color: var(--acc);
  margin: 0 0 22px;
}
.partner-title { margin-bottom: 0.4em; }
.partner-card p { margin-bottom: 1.1em; }
.partner-card .btn { margin-top: 10px; }

/* Newsletter */
.newsletter-section { background: var(--surface); border-top: 1px solid var(--line); }
.newsletter-form { display: flex; gap: 12px; margin: 30px 0 16px; }
.newsletter-form input { flex: 1; margin-bottom: 0; }

/* ============ FORMS ============ */

input, textarea, select {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 1em 1.15em;
  margin-bottom: 18px;
}
input:focus, textarea:focus {
  outline: 2px solid var(--acc);
  outline-offset: 2px;
  border-color: var(--acc);
}
::placeholder { color: var(--faint); }
label {
  display: block;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.68rem;
  color: var(--faint);
  margin-bottom: 10px;
}
.form-grid { max-width: 640px; }
.form-section { padding-top: 90px; padding-bottom: 130px; }

/* ============ FOOTER ============ */

.site-footer { background: #08080E; border-top: 1px solid var(--line); padding: 70px 0 80px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  gap: 40px;
  align-items: start;
}
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { text-decoration: none; font-size: 0.9rem; }
.footer-credit { text-align: right; margin: 0; }

/* ============ REVEAL ============ */

.rv { opacity: 0; transform: translateY(20px); transition: opacity 0.8s ease, transform 0.8s ease; }
.rv.in { opacity: 1; transform: none; }

/* ============ RESPONSIVE ============ */

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
    background: rgba(10, 10, 18, 0.97);
    padding: 32px 28px 42px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .site-nav.open { transform: none; }
  .trust-grid { grid-template-columns: 1fr; gap: 30px; }
  .section { padding: 96px 0; }
  .hero { padding: 120px 0 100px; min-height: 82vh; }
  .page-hero { padding: 120px 0 90px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-credit { text-align: left; }
  .newsletter-form { flex-direction: column; }
  .partner-card { padding: 34px 26px 32px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; }
}