/* ============================================================
   MontiAI — The Prepared Environment
   Editorial landing page, stealth mode
   ============================================================ */

:root {
  /* — Surface hierarchy — */
  --surface:                #fcf9f4;
  --surface-low:            #f6f3ee;
  --surface-lowest:         #ffffff;
  --surface-high:           #efeae0;
  --surface-highest:        #e9e3d6;

  /* — Ink — */
  --on-surface:             #1c1c19;
  --on-surface-variant:     #56423e;
  --on-surface-muted:       rgba(28, 28, 25, 0.56);
  --on-surface-faint:       rgba(28, 28, 25, 0.32);

  /* — Brand accents (terracotta) — */
  --accent:                 #9d3d2e;
  --accent-container:       #bd5444;
  --accent-soft:            color-mix(in oklab, #9d3d2e 18%, #f6f3ee);

  /* — Type ramp — */
  --font-serif:             "Noto Serif", "Iowan Old Style", Georgia, serif;
  --font-sans:              "Plus Jakarta Sans", ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  --font-mono:              "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* — Spacing scale — */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1.25rem;
  --sp-6: 2rem;
  --sp-8: 3rem;
  --sp-10: 4.5rem;
  --sp-12: 6.5rem;
  --sp-16: 10rem;
  --sp-20: 14rem;

  /* — Radius — */
  --rd-md: 0.625rem;
  --rd-lg: 1rem;
  --rd-xl: 1.5rem;

  /* — Editorial measure — */
  --measure: 38ch;
}

/* ────────────────────────────────────────────────────────── */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--surface); }

/* ────────────────────────────────────────────────────────── */
/* Layout                                                     */
/* ────────────────────────────────────────────────────────── */

.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--sp-8);
}

/* ──────────────── Top bar ──────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) 0;
}
.wordmark {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: -0.005em;
  display: flex;
  align-items: baseline;
  gap: 0.4em;
}
.wordmark .glyph {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-0.05em);
  margin-right: 0.05em;
}
.wordmark em {
  font-style: italic;
  color: var(--on-surface-variant);
  font-weight: 400;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: var(--surface-low);
}
.status-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.15); }
}

/* ──────────────── Hero ──────────────── */
.hero {
  position: relative;
  padding-top: var(--sp-12);
  padding-bottom: var(--sp-16);
  padding-left: var(--sp-2);
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: var(--sp-8);
}
.hero-eyebrow .rule {
  width: 36px;
  height: 1px;
  background: var(--on-surface-faint);
}

.hero-headline {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 7.2vw, 6.4rem);
  line-height: 1.02;
  letter-spacing: -0.018em;
  margin: 0;
  text-wrap: balance;
  max-width: 16ch;
}
.hero-headline em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}

.hero-deck {
  margin-top: var(--sp-8);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.15rem, 1.6vw, 1.45rem);
  line-height: 1.5;
  color: var(--on-surface-variant);
  max-width: 36ch;
}

.hero-meta {
  margin-top: var(--sp-10);
  display: grid;
  grid-template-columns: max-content max-content max-content;
  gap: var(--sp-8);
}
.hero-meta dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin-bottom: var(--sp-2);
}
.hero-meta dd {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--on-surface);
}

/* ──────────────── Section frame ──────────────── */
.section {
  padding: var(--sp-16) 0;
}
.section--low {
  background: var(--surface-low);
}
.section--lowest {
  background: var(--surface-lowest);
}

.section-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin: 0 0 var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.section-eyebrow .num {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent);
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
}

.section-headline {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0;
  text-wrap: balance;
  max-width: 22ch;
}
.section-headline em {
  font-style: italic;
  color: var(--accent);
}

/* ──────────────── Premise — editorial two-column ──────────────── */
.premise {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}
.premise-prose p {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--on-surface);
  margin: 0 0 var(--sp-4);
  max-width: 38ch;
  text-wrap: pretty;
}
.premise-prose p + p { color: var(--on-surface-variant); }
.premise-prose .lead::first-letter {
  font-family: var(--font-serif);
  font-size: 3.6em;
  float: left;
  line-height: 0.86;
  padding: 0.06em 0.14em 0 0;
  color: var(--accent);
  font-weight: 400;
}

/* ──────────────── Approach — three principles ──────────────── */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
  margin-top: var(--sp-10);
}
.principle {
  background: var(--surface-lowest);
  border-radius: var(--rd-xl);
  padding: var(--sp-8) var(--sp-6) var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  min-height: 22rem;
  position: relative;
}
.principle .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--accent);
}
.principle h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.65rem;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
  letter-spacing: -0.008em;
}
.principle h3 em { font-style: italic; color: var(--accent); }
.principle p {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--on-surface-variant);
  margin: 0;
  max-width: 28ch;
}
.principle .tag {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--on-surface-muted);
  text-transform: uppercase;
}

/* ──────────────── Observation card ──────────────── */
.observation {
  margin-top: var(--sp-12);
  background: var(--accent-soft);
  border-radius: var(--rd-xl);
  padding: var(--sp-8) var(--sp-10);
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  gap: var(--sp-8);
  align-items: center;
}

.observation .ob-icon {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background: var(--surface);
  display: grid;
  place-items: center;
  color: var(--accent);
}
.observation .ob-icon svg { width: 1.5rem; height: 1.5rem; }

.observation .ob-body p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.45;
  color: var(--on-surface);
  max-width: 46ch;
}
.observation .ob-body .small {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin-bottom: var(--sp-2);
}
.observation .ob-meta {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--on-surface-muted);
  white-space: nowrap;
}

/* ──────────────── Status ──────────────── */
.status {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}
.status-headline {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.012em;
  margin: 0;
  text-wrap: balance;
}
.status-headline em { font-style: italic; color: var(--accent); }

.contacts {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}
.contact-block {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.contact-block .role {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
}
.contact-block .addr {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--on-surface);
  display: inline-flex;
  align-items: baseline;
  gap: var(--sp-2);
}
.contact-block .addr:hover { color: var(--accent); }
.contact-block .addr .arrow {
  display: inline-block;
  transition: transform 200ms ease;
  font-family: var(--font-sans);
}
.contact-block:hover .arrow { transform: translate(3px, -3px); }
.contact-block .note {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--on-surface-muted);
  max-width: 38ch;
}

/* ──────────────── Footer ──────────────── */
.footer {
  background: var(--surface-low);
  padding: var(--sp-12) 0 var(--sp-8);
  margin-top: var(--sp-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-8);
}
.footer h4 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  font-weight: 600;
  margin: 0 0 var(--sp-3);
}
.footer p, .footer li {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--on-surface-variant);
  margin: 0;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.15rem; }
/* Visual break between the address block and the OIB line, without an empty <li>. */
.footer li.spacer-above { margin-top: var(--sp-3); }
.footer-brand .wordmark { font-size: 1.4rem; margin-bottom: var(--sp-3); }
.footer-brand .blurb {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--on-surface-variant);
  max-width: 32ch;
  margin-bottom: var(--sp-6);
}

.footer-base {
  margin-top: var(--sp-10);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--on-surface-muted);
  text-transform: uppercase;
}

/* ──────────────── Responsive ──────────────── */
@media (max-width: 880px) {
  .shell { padding: 0 var(--sp-6); }
  .premise, .status, .footer-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .principles { grid-template-columns: 1fr; }
  .observation {
    grid-template-columns: max-content 1fr;
    gap: var(--sp-6);
    padding: var(--sp-6);
  }
  .observation .ob-meta { grid-column: 1 / -1; text-align: left; }
  .hero-meta { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .section { padding: var(--sp-12) 0; }
  .hero { padding-bottom: var(--sp-12); padding-top: var(--sp-8); }
  .footer-base { flex-direction: column; gap: var(--sp-2); }
}