/* DATETRIS — Version B: Calvin Klein-inspired mono editorial */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --black: #000000;
  --white: #ffffff;
  --off-white: #f5f5f5;
  --grey-300: #cccccc;
  --grey-500: #888888;
  --grey-700: #444444;
  --ease: cubic-bezier(0.215, 0.61, 0.355, 1);
  --ease-soft: cubic-bezier(0.16, 1, 0.3, 1);
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  font-weight: 400;
  line-height: 1.45;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: opacity 0.3s var(--ease); }
a:hover { opacity: 0.5; }
::selection { background: var(--black); color: var(--white); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: 24px 32px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  mix-blend-mode: difference;
  color: var(--white);
}
@media (max-width: 720px) { .site-header { padding: 18px 20px; } }

.tag {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  color: inherit;
}
.tag:hover { opacity: 1; }

.nav-mini {
  display: flex;
  gap: 32px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}
@media (max-width: 720px) {
  .nav-mini { display: none; }
  .menu-btn { display: block; }
}
.menu-btn {
  display: none;
  background: none; border: 0;
  color: inherit;
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--black);
  color: var(--white);
  z-index: 200;
  display: none;
  flex-direction: column;
  padding: 80px 32px 32px;
}
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-overlay .close {
  position: absolute;
  top: 24px; right: 24px;
  background: none; border: 0;
  color: var(--white);
  font-size: 32px;
  cursor: pointer;
}
.mobile-nav-overlay nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
  font-size: 32px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

/* ---------- Hero — oversized centered wordmark ---------- */
.hero {
  background: var(--black);
  color: var(--white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-mark {
  font-family: 'Inter', sans-serif;
  font-size: clamp(80px, 20vw, 320px);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  animation: fadeIn 1.4s var(--ease-soft) 0.2s forwards;
}

.hero-tagline {
  font-size: 14px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 48px;
  opacity: 0;
  animation: fadeIn 1.4s var(--ease-soft) 0.6s forwards;
  color: rgba(255,255,255,0.85);
}

.hero-cta-wrap {
  margin-top: 64px;
  opacity: 0;
  animation: fadeIn 1.4s var(--ease-soft) 0.9s forwards;
}

.btn-mono {
  display: inline-block;
  padding: 18px 48px;
  border: 1px solid var(--white);
  background: transparent;
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
.btn-mono:hover {
  background: var(--white);
  color: var(--black);
  opacity: 1;
}

.btn-mono-dark {
  display: inline-block;
  padding: 18px 48px;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
.btn-mono-dark:hover {
  background: var(--white);
  color: var(--black);
  opacity: 1;
}

.hero-meta {
  position: absolute;
  bottom: 32px;
  left: 32px; right: 32px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  opacity: 0.5;
}
@media (max-width: 720px) {
  .hero-meta { font-size: 9px; left: 20px; right: 20px; bottom: 24px; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Section base ---------- */
section { padding: 140px 32px; }
@media (max-width: 720px) { section { padding: 80px 20px; } }
.container { max-width: 1280px; margin: 0 auto; }
.container-narrow { max-width: 880px; margin: 0 auto; }

.label {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--grey-500);
  margin-bottom: 40px;
}
.label-light { color: rgba(255,255,255,0.6); }

h2.display {
  font-size: clamp(40px, 7vw, 96px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  text-transform: uppercase;
}

.lede {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.5;
  color: var(--grey-700);
  max-width: 560px;
}
.lede-light { color: rgba(255,255,255,0.75); }

/* ---------- Statement section ---------- */
.statement {
  background: var(--white);
  text-align: center;
}
.statement h2.display {
  max-width: 1100px;
  margin: 0 auto 32px;
}
.statement .lede { margin: 0 auto; max-width: 640px; }

/* ---------- Editorial swap ---------- */
.editorial {
  background: var(--off-white);
}
.editorial-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 70vh;
}
@media (max-width: 900px) {
  .editorial-row { grid-template-columns: 1fr; min-height: auto; }
}
.editorial-image {
  background:
    radial-gradient(circle at 50% 50%, rgba(0,0,0,0.6), rgba(0,0,0,0.95)),
    linear-gradient(180deg, #1a1a1a, #000);
  position: relative;
  min-height: 480px;
}
.editorial-image::after {
  content: 'D.';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(120px, 20vw, 280px);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.06em;
  opacity: 0.95;
}
.editorial-text {
  background: var(--white);
  padding: 80px 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (max-width: 720px) {
  .editorial-text { padding: 56px 24px; }
}

/* ---------- Numbered grid ---------- */
.principles {
  background: var(--white);
}
.principles-header {
  text-align: center;
  margin-bottom: 80px;
}
.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--black);
}
@media (max-width: 720px) {
  .principles-grid { grid-template-columns: 1fr; }
}
.principle {
  padding: 56px 32px;
  border-bottom: 1px solid var(--black);
}
.principle:nth-child(odd) { border-right: 1px solid var(--black); }
@media (max-width: 720px) {
  .principle:nth-child(odd) { border-right: 0; }
}
.principle-num {
  font-size: 11px;
  letter-spacing: 0.18em;
  font-weight: 600;
  margin-bottom: 24px;
  display: block;
}
.principle h3 {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 16px;
  line-height: 1.05;
}
.principle p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--grey-700);
}

/* ---------- Pricing ---------- */
.pricing {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 180px 32px;
}
@media (max-width: 720px) { .pricing { padding: 96px 20px; } }
.pricing .label { color: rgba(255,255,255,0.6); }
.price-display {
  font-size: clamp(120px, 24vw, 360px);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.06em;
  margin: 32px 0;
}
.price-display .currency { font-size: 0.4em; vertical-align: top; font-weight: 500; }
.price-period {
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  margin-bottom: 56px;
  color: rgba(255,255,255,0.7);
}

/* ---------- Download ---------- */
.download {
  background: var(--white);
  text-align: center;
  padding: 160px 32px;
}
@media (max-width: 720px) { .download { padding: 96px 20px; } }
.download h2.display { margin-bottom: 16px; }
.download p { font-size: 16px; color: var(--grey-700); margin-bottom: 56px; }
.download a img { max-width: 220px; margin: 0 auto; transition: transform 0.4s var(--ease); }
.download a:hover img { transform: scale(1.04); }
.download a:hover { opacity: 1; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--black);
  color: var(--white);
  padding: 96px 32px 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 720px) { .site-footer { padding: 64px 20px 24px; } }
.footer-mark {
  font-size: clamp(80px, 18vw, 240px);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.06em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 80px;
  white-space: nowrap;
  overflow: hidden;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
.footer-grid h4 {
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 20px;
  color: rgba(255,255,255,0.5);
}
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 12px; font-size: 14px; }
.footer-grid a { color: rgba(255,255,255,0.85); }
.footer-bottom {
  max-width: 1280px;
  margin: 32px auto 0;
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- Legal pages ---------- */
.legal-hero {
  padding: 200px 32px 100px;
  background: var(--black);
  color: var(--white);
  text-align: center;
}
@media (max-width: 720px) { .legal-hero { padding: 140px 20px 64px; } }
.legal-hero .label { color: rgba(255,255,255,0.6); margin-bottom: 24px; }
.legal-hero h1 {
  font-size: clamp(56px, 12vw, 200px);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.legal-hero .updated {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 96px 32px 140px;
}
@media (max-width: 720px) { .legal { padding: 64px 24px 96px; } }
.legal h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin: 56px 0 16px;
  padding-top: 32px;
  border-top: 1px solid var(--black);
}
.legal h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.legal h3 {
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 32px 0 12px;
}
.legal p, .legal li {
  font-size: 17px;
  line-height: 1.7;
  color: var(--grey-700);
  margin-bottom: 16px;
}
.legal ul, .legal ol { padding-left: 24px; margin-bottom: 16px; }
.legal a { color: var(--black); border-bottom: 2px solid var(--black); }
.legal a:hover { opacity: 0.5; }
.legal .callout {
  background: var(--off-white);
  border-left: 3px solid var(--black);
  padding: 24px 28px;
  margin: 32px 0;
  font-size: 16px;
}
.legal .callout strong { color: var(--black); }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1s var(--ease-soft), transform 1s var(--ease-soft);
}
.reveal.in { opacity: 1; transform: translateY(0); }