/* ============================================================
   Zerqon — A Software Studio
   style.css
   ============================================================ */

:root {
  --paper: #f7f6f2;
  --paper-warm: #efeee8;
  --ink: #1a1816;
  --ink-soft: #524d47;
  --ink-faint: #95918a;
  --accent: #8b6f3f;
  --rule: #e0ddd2;
  --header-bg: rgba(247, 246, 242, 0.92);
  --indigo: #1E3758;
  --indigo-faint: #6b7a91;
  --content-max: 1200px;
  --gutter: max(48px, calc((100% - var(--content-max)) / 2));
  --eyebrow-col: 120px;
  --eyebrow-gap: 48px;
  --content-offset: calc(var(--eyebrow-col) + var(--eyebrow-gap));
  --header-height: 66px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter Tight', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle paper grain — pure CSS, no images */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: multiply;
  z-index: 100;
  background-image:
    radial-gradient(circle at 20% 30%, transparent 0, rgba(139, 111, 63, 0.015) 1px, transparent 2px),
    radial-gradient(circle at 70% 70%, transparent 0, rgba(24, 22, 20, 0.02) 1px, transparent 2px);
  background-size: 3px 3px, 4px 4px;
}

/* ============================================================
   FIXED HEADER
   ============================================================ */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 22px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 28px;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  font-variation-settings: 'opsz' 144;
}

.wordmark sup {
  font-size: 14px;
  letter-spacing: 0.15em;
  margin-left: 4px;
  text-transform: uppercase;
  font-family: 'Inter Tight', sans-serif;
  font-weight: 500;
  color: var(--ink-faint);
  vertical-align: super;
}

.meta-nav {
  display: flex;
  gap: 36px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-soft);
}

.meta-nav a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.meta-nav a:hover {
  color: var(--accent);
}

.meta-nav a.active {
  color: var(--ink);
}

/* ============================================================
   HERO (homepage only)
   ============================================================ */

.hero {
  min-height: 78vh;
  padding: 0 var(--gutter) 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
}

.hero-meta {
  align-self: end;
  padding-bottom: 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  line-height: 2;
}

.hero-meta .label {
  display: block;
  color: var(--ink);
}

.hero-statement {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(40px, 6.5vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-variation-settings: 'opsz' 144;
  max-width: 9ch;
  justify-self: end;
  align-self: center;
  text-align: right;
}

.hero-statement em {
  font-style: italic;
  color: var(--accent);
  font-weight: 300;
}

.scroll-mark {
  position: absolute;
  bottom: 32px;
  left: var(--gutter);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 14px;
}

.scroll-mark::after {
  content: '';
  width: 60px;
  height: 1px;
  background: var(--ink-faint);
}

/* ============================================================
   SECTIONS (shared across pages)
   ============================================================ */

section {
  padding: 88px var(--gutter);
  border-top: 1px solid var(--rule);
}

.section-header {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr;
  gap: var(--eyebrow-gap);
  align-items: baseline;
  margin-bottom: 56px;
}

.section-number {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
}

.section-title {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variation-settings: 'opsz' 144;
}

/* ============================================================
   ABOUT / STUDIO BLOCK
   ============================================================ */

.about-body {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr 1fr;
  gap: var(--eyebrow-gap);
}

.about-body p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 52ch;
}

.about-body p + p {
  margin-top: 28px;
}

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 8px;
}

.pillar {
  border-top: 1px solid var(--rule);
  padding-top: 16px;
}

.pillar-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 8px;
}

.pillar-text {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink);
  font-variation-settings: 'opsz' 144;
}

/* ============================================================
   PORTFOLIO / WORK LIST
   ============================================================ */

.portfolio-list {
  display: flex;
  flex-direction: column;
}

.work-item {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr auto;
  gap: var(--eyebrow-gap);
  padding: 40px 0;
  border-top: 1px solid var(--rule);
  align-items: baseline;
  transition: padding 0.4s ease;
  cursor: default;
}

.work-item:last-child {
  border-bottom: 1px solid var(--rule);
}

.work-item:hover {
  padding: 56px 0;
}

.work-index {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  font-weight: 500;
}

.work-info h3 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  font-variation-settings: 'opsz' 144;
}

.work-info h3 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.work-info h3 a:hover {
  color: var(--accent);
}

.work-info p {
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 56ch;
  line-height: 1.7;
}

.work-deployment {
  font-size: 13px;
  color: var(--ink-faint);
  font-style: italic;
  margin-top: 10px;
  letter-spacing: 0.01em;
}

.work-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.work-link:hover {
  color: var(--accent);
}

/* ============================================================
   PRODUCT PAGE — DERIVA AND FUTURE PRODUCT PAGES
   ============================================================ */

.product-hero {
  margin: 56px 0 0;
}

.product-hero img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  background: var(--paper-warm);
}

.product-hero figcaption {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  font-weight: 500;
  text-align: center;
}

.product-page .prose {
  margin-top: 64px;
}

.product-figure {
  margin: 40px 0;
}

.product-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  background: var(--paper-warm);
}

.product-figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  font-weight: 500;
}

.work-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  font-weight: 500;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
}

.status-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.status-dot.upcoming::before {
  background: transparent;
  border: 1px solid var(--ink-faint);
}

/* ============================================================
   PRINCIPLES GRID
   ============================================================ */

.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--rule);
  margin-left: var(--content-offset);
}

.principle {
  background: var(--paper);
  padding: 40px 32px;
}

.principle-num {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 16px;
  font-variation-settings: 'opsz' 144;
}

.principle-title {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 18px;
  margin-bottom: 12px;
  font-variation-settings: 'opsz' 144;
}

.principle-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ============================================================
   CONTACT (dark inverted block)
   ============================================================ */

.contact {
  background: var(--indigo);
  color: var(--paper);
  padding: 64px var(--gutter) 48px;
  border-top: none;
}

.contact .section-number,
.contact .pillar-label {
  color: var(--indigo-faint);
}

.contact-statement {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 18ch;
  margin-bottom: 40px;
  font-variation-settings: 'opsz' 144;
  margin-left: var(--content-offset);
}

.contact-detail {
  margin-left: var(--content-offset);
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 80px;
  padding-top: 24px;
  border-top: 1px solid rgba(247, 246, 242, 0.15);
}

.contact-block .label {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--indigo-faint);
  margin-bottom: 8px;
  font-weight: 500;
}

.contact-block a,
.contact-block .value {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 18px;
  color: var(--paper);
  text-decoration: none;
  font-variation-settings: 'opsz' 144;
  transition: color 0.2s ease;
}

.contact-block a:hover {
  color: var(--accent);
}

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

footer {
  padding: 32px var(--gutter);
  background: var(--indigo);
  color: var(--indigo-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: none;
  font-weight: 500;
  border-top: 1px solid rgba(247, 246, 242, 0.08);
}

footer a {
  color: inherit;
  text-decoration: none;
}

footer a:hover {
  color: var(--paper);
}

/* ============================================================
   INNER PAGE LAYOUT (privacy, terms, studio detail)
   ============================================================ */

.page {
  padding: 140px var(--gutter) 96px;
}

.page-header {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr;
  gap: var(--eyebrow-gap);
  align-items: baseline;
  margin-bottom: 64px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}

.page-eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
}

.page-title {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: 'opsz' 144;
}

.page-subtitle {
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-faint);
  font-weight: 500;
}

.prose {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr;
  gap: var(--eyebrow-gap);
}

.prose-aside {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  position: sticky;
  top: calc(var(--header-height) + 54px);
  align-self: start;
}

.prose-body {
  max-width: none;
}

.prose-body h2 {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: clamp(24px, 2.5vw, 32px);
  line-height: 1.2;
  margin-top: 56px;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  font-variation-settings: 'opsz' 144;
}

.prose-body h2:first-child {
  margin-top: 0;
}

.prose-body p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 22px;
}

.prose-body p strong {
  color: var(--ink);
  font-weight: 500;
}

.prose-body ul {
  margin: 20px 0 24px 24px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.prose-body li {
  margin-bottom: 8px;
}

.prose-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: opacity 0.2s ease;
}

.prose-body a:hover {
  opacity: 0.7;
}

.last-updated {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}

/* ============================================================
   LOAD ANIMATIONS (homepage hero only)
   ============================================================ */

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.wordmark, .meta-nav, .hero-meta, .hero-statement, .scroll-mark {
  animation: rise 0.9s cubic-bezier(0.2, 0.6, 0.2, 1) both;
}

.wordmark { animation-delay: 0.1s; }
.meta-nav { animation-delay: 0.2s; }
.hero-meta { animation-delay: 0.4s; }
.hero-statement { animation-delay: 0.55s; }
.scroll-mark { animation-delay: 0.85s; }

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

@media (max-width: 900px) {
  header { padding: 16px 24px; }
  .meta-nav { gap: 20px; font-size: 10px; }

  section { padding: 64px 24px; }

  .hero {
    padding: 0 24px 48px;
    grid-template-columns: 1fr;
    align-items: start;
    gap: 40px;
    min-height: 70vh;
  }
  .hero-meta {
    align-self: start;
    padding-top: 100px;
    padding-bottom: 0;
  }
  .hero-statement {
    max-width: 100%;
    text-align: left;
    justify-self: start;
    align-self: start;
  }
  .scroll-mark { left: 24px; bottom: 20px; }

  .section-header,
  .about-body,
  .work-item,
  .page-header,
  .prose {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .work-meta { align-items: flex-start; }

  .principles-grid {
    margin-left: 0;
    grid-template-columns: 1fr;
  }

  .contact { padding: 64px 24px 48px; }
  .contact-statement,
  .contact-detail { margin-left: 0; }
  .contact-detail {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page { padding: 96px 24px 64px; }

  .product-hero { margin-top: 32px; }
  .product-page .prose { margin-top: 40px; }

  .prose-aside {
    position: static;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 16px;
  }

  footer {
    padding: 24px;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}