/* Midra AI — shared design system
   The Renaissance of Business Operations */

:root {
  /* Palette: modern premium — soft off-white + ink + signal red + ultramarine */
  --bg:       #f5f3ee;     /* clean warm off-white */
  --bg-deep:  #ebe8e0;     /* slightly deeper, for alternating sections */
  --bg-elev:  #ffffff;     /* pure white for cards */
  --surface:  #ffffff;
  --line:         rgba(15, 15, 18, 0.10);
  --line-strong:  rgba(15, 15, 18, 0.22);

  --ink:        #0e0e10;
  --ink-dim:    rgba(14, 14, 16, 0.70);
  --ink-mute:   rgba(14, 14, 16, 0.48);
  --ivory:      var(--ink);
  --ivory-dim:  var(--ink-dim);
  --parchment:  #efe7d1;

  /* Signal accents — vivid but disciplined */
  --bronze:        #e11d2e;   /* signal red */
  --bronze-deep:   #a8762d;   /* warm gold (used sparingly) */
  --bronze-soft:   #d4a55a;
  --vermillion:    #e11d2e;
  --ultramarine:   #0e0e10;   /* mark is now black */
  --ultramarine-2: #3458b6;
  --verdigris:     #3f7a4b;

  --copper:        var(--bronze-deep);
  --steel:         var(--ink);
  --intelligence:  var(--ink);

  --text:      var(--ink);
  --text-dim:  var(--ink-dim);
  --text-mute: var(--ink-mute);

  /* Type */
  --display: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --serif:   "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --sans:    "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Spacing scale */
  --gutter: clamp(20px, 4vw, 64px);
  --section: clamp(80px, 10vw, 160px);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------------------- Resets ---------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
::selection { background: var(--vermillion); color: var(--bg); }

/* ---------------------- Layout primitives ---------------------- */
.wrap {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding-top: var(--section); padding-bottom: var(--section); position: relative; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bronze);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--bronze);
  opacity: 0.7;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
}

h1 { font-size: clamp(46px, 6.6vw, 100px); line-height: 0.96; letter-spacing: -0.035em; font-weight: 700; }
h2 { font-size: clamp(34px, 4.6vw, 64px); line-height: 1.02; letter-spacing: -0.028em; font-weight: 700; }
h3 { font-size: clamp(22px, 2.0vw, 30px); line-height: 1.18; letter-spacing: -0.02em; font-weight: 600; }

.lede {
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.55;
  color: var(--text-dim);
  max-width: 56ch;
  text-wrap: pretty;
}
em, .italic {
  font-family: var(--display);
  font-style: normal;
  font-weight: 700;
  color: var(--vermillion);
}

p { margin: 0 0 1em; color: var(--text-dim); }
p:last-child { margin-bottom: 0; }

/* ---------------------- Nav ---------------------- */
.nav {
  position: fixed; inset: 0 0 auto 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--gutter);
  background: linear-gradient(180deg, rgba(244,234,208,0.92), rgba(244,234,208,0.0));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(244,234,208,0.88);
  border-bottom-color: var(--line);
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--ivory);
}
.nav-brand .mark {
  width: auto;
  height: 30px;
  aspect-ratio: 1032 / 247;
  background: url("assets/midra-logo-dark.png") left center / contain no-repeat;
  filter: none;
  flex-shrink: 0;
}
.nav-brand > span:not(.mark) {
  /* Logo image already contains the wordmark — hide the duplicate text label. */
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.nav-links {
  display: flex; gap: 28px; align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  white-space: nowrap;
}
.nav-links a { position: relative; padding: 6px 0; transition: color 200ms var(--ease); }
.nav-links a:hover, .nav-links a.active { color: var(--ivory); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--bronze);
}
.nav-cta {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 10px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ivory);
  white-space: nowrap;
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}
.nav-cta:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; align-items: center; justify-content: center; }
}

/* ---------------------- Mobile drawer ---------------------- */
.nav-hamburger {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
  width: 44px; height: 44px;
  position: relative;
  z-index: 70;
}
.nav-hamburger span {
  display: block;
  width: 22px; height: 1.6px;
  background: currentColor;
  margin: 5px auto;
  transition: transform 280ms var(--ease), opacity 200ms var(--ease);
  transform-origin: center;
}
.nav-hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(360px, 88%);
  background: var(--bg);
  z-index: 60;
  padding: 96px 28px 32px;
  transform: translateX(100%);
  transition: transform 360ms var(--ease);
  box-shadow: -22px 0 60px -22px rgba(14,14,16,0.28);
  visibility: hidden;
  display: flex;
  flex-direction: column;
}
.nav-drawer[data-open="true"] {
  transform: translateX(0);
  visibility: visible;
}
.nav-drawer-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.nav-drawer-inner a {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 200ms var(--ease), padding 200ms var(--ease);
}
.nav-drawer-inner a:hover { color: var(--vermillion); padding-left: 8px; }
.nav-drawer-inner a.active { color: var(--vermillion); }
.nav-drawer-inner a .drawer-arrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  color: var(--bronze);
  opacity: 0.55;
}
.nav-drawer-inner .drawer-cta {
  margin-top: 32px;
  background: var(--ink);
  color: var(--bg);
  padding: 18px 24px;
  border-radius: 999px;
  text-align: center;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--ink);
  justify-content: center;
}
.nav-drawer-inner .drawer-cta .drawer-arrow { display: none; }

.nav-drawer-scrim {
  position: fixed; inset: 0; z-index: 55;
  background: rgba(20,12,4,0.4);
  -webkit-backdrop-filter: blur(2px);
          backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 280ms var(--ease);
}
.nav-drawer-scrim[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}
body.nav-drawer-open { overflow: hidden; }

/* ---------------------- Mobile breakpoint (<=600px) ---------------------- */
/* Phone-tier overrides: collapse multi-column grids, halve hero padding,
   single-column footer so the layout doesn't feel cramped under ~600px. */
@media (max-width: 600px) {
  .capability-grid { grid-template-columns: 1fr !important; }
  .anchor-rail { grid-template-columns: 1fr !important; }
  .anchor-rail a:nth-child(3) { border-left: 0 !important; border-top: 1px solid var(--line) !important; }
  .footer-grid { grid-template-columns: 1fr !important; gap: 36px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .page-header { padding-top: 110px !important; padding-bottom: 60px !important; min-height: 0 !important; }
  .section-vision { padding-top: 100px !important; padding-bottom: 100px !important; }
  .section-thesis { padding-top: 60px !important; padding-bottom: 80px !important; }
  .section-horizon:has(> .horizon-backdrop),
  .section-cta:has(> .horizon-backdrop) {
    min-height: 0 !important;
    padding-top: 100px !important;
    padding-bottom: 100px !important;
  }
  .section { padding-top: 60px; padding-bottom: 60px; }
}

/* ---------------------- Buttons ---------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 26px;
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.01em;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 240ms var(--ease), background 240ms var(--ease), color 240ms var(--ease), border-color 240ms var(--ease);
  cursor: pointer;
}
.btn .arrow { transition: transform 240ms var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary {
  background: var(--ink); color: var(--bg);
  box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset, 0 12px 28px rgba(29,19,8,0.18);
}
.btn-primary:hover { background: var(--vermillion); color: var(--bg); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { background: rgba(29,19,8,0.05); border-color: var(--ink); }

/* ---------------------- Cards ---------------------- */
.card {
  background: linear-gradient(180deg, rgba(255,250,234,0.85), rgba(244,234,208,0.55));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 280ms var(--ease), transform 400ms var(--ease), background 400ms var(--ease);
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.card .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--bronze);
  margin-bottom: 28px;
  display: block;
}

/* ---------------------- Reveals ---------------------- */
/* Content is visible by default — the .in class just removes a small
   translateY offset so we get a subtle slide-up. This guarantees the page
   never gets stuck invisible if JS is slow, blocked, or the tab is
   backgrounded (browsers pause IntersectionObserver in hidden tabs). */
.reveal {
  opacity: 1;
  transform: translateY(12px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  will-change: transform;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > * {
  opacity: 1;
  transform: translateY(8px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.reveal-stagger.in > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: 400ms; }
.reveal-stagger.in > * { opacity: 0; transform: translateY(16px); }
.reveal-stagger.in > * { opacity: 1; transform: translateY(0); }

/* ---------------------- Decorative ---------------------- */
.hairline {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  border: 0; margin: 0;
}
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-mute);
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* ---------------------- Footer ---------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 80px var(--gutter) 40px;
  background-color: var(--bg-deep);
  background-image:
    linear-gradient(to bottom, rgba(235,232,224,0.55) 0%, rgba(235,232,224,0.25) 35%, rgba(235,232,224,0.25) 65%, rgba(235,232,224,0.7) 100%),
    url("assets/footer-backdrop.webp");
  background-size: cover, cover;
  background-position: center, center;
  background-repeat: no-repeat, no-repeat;
  position: relative;
}
.footer > * { position: relative; z-index: 1; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1440px;
  margin: 0 auto;
}
.footer-grid h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bronze);
  margin: 0 0 18px;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { color: var(--text-dim); font-size: 14px; transition: color 200ms var(--ease); }
.footer-grid a:hover { color: var(--ivory); }
.footer-bottom {
  max-width: 1440px; margin: 60px auto 0;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--text-mute);
  border-top: 1px solid var(--line); padding-top: 24px;
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------------------- Renaissance flourishes ---------------------- */
.canvas-grain {
  pointer-events: none;
  position: fixed; inset: 0;
  background-image:
    radial-gradient(circle at 18% 24%, rgba(168,118,45,0.10), transparent 55%),
    radial-gradient(circle at 82% 76%, rgba(30,58,138,0.07), transparent 60%),
    radial-gradient(circle at 60% 12%, rgba(196,77,46,0.06), transparent 55%);
  z-index: 1;
  mix-blend-mode: multiply;
}
.parchment-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(29,19,8,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29,19,8,0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black, transparent 70%);
}

/* fine columns motif: classical architecture rhythm */
.colonnade {
  position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0 calc(100% / 12 - 1px),
    rgba(29,19,8,0.06) calc(100% / 12 - 1px) calc(100% / 12)
  );
}

/* Spotlight for hero compositions */
.spot {
  position: absolute; pointer-events: none; border-radius: 50%;
  filter: blur(72px);
  opacity: 0.55;
  mix-blend-mode: multiply;
}

/* ---------------------- Breadcrumbs (shared) ---------------------- */
/* Keep "MIDRA / CASE STUDIES" on a single line — wrapping looks
   amateurish when it splits a two-word page name across rows. */
.crumbs { white-space: nowrap; }
.crumbs > * { white-space: nowrap; }

/* ---------------------- Horizon backdrop (shared) ---------------------- */
/* Any final-CTA section that contains a .horizon-backdrop child gets the
   same renaissance-terrace skyline treatment as the home page. Drop in:
     <div class="horizon-backdrop" aria-hidden="true"></div>
   as the first child of the section, and apply class `section-horizon`. */
.horizon-backdrop {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: url("assets/horizon-bg.webp") center / cover no-repeat;
  -webkit-mask-image: linear-gradient(180deg, var(--bg) 0%, black 22%, black 78%, var(--bg) 100%);
          mask-image: linear-gradient(180deg, var(--bg) 0%, black 22%, black 78%, var(--bg) 100%);
}
.section-horizon:has(> .horizon-backdrop),
.section-cta:has(> .horizon-backdrop) {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  background: var(--bg) !important;
  border-top: 0;
  text-align: center;
}
.section-horizon:has(> .horizon-backdrop)::before,
.section-cta:has(> .horizon-backdrop)::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(245,243,238,0.45) 0%, rgba(245,243,238,0) 60%);
}
.section-horizon:has(> .horizon-backdrop) > .wrap,
.section-cta:has(> .horizon-backdrop) > .wrap {
  position: relative; z-index: 2;
}