/* =========================================================
   App shell — concept switcher + tweaks panel
   ========================================================= */
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;background:var(--ink-900);}
body{overflow-x:hidden;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
img{max-width:100%;display:block;}

/* Concept switcher (always visible, top) */
.switcher{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  z-index:10000;display:flex;gap:4px;padding:4px;
  background:rgba(22,20,30,0.82);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.12);border-radius:999px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:-0.02em;
}
.switcher button{
  background:transparent;color:rgba(247,247,237,0.65);border:0;
  padding:8px 18px;border-radius:999px;cursor:pointer;
  transition:all 180ms var(--ease-out);white-space:nowrap;
}
.switcher button:hover{color:var(--cream-50);}
.switcher button.active{background:var(--cream-50);color:var(--ink-900);}
.switcher .meta{padding:8px 14px 8px 18px;color:rgba(247,247,237,0.4);
  border-right:1px solid rgba(255,255,255,0.1);user-select:none;}

/* Tweaks panel */
.tweaks{
  position:fixed;right:20px;bottom:20px;z-index:10000;
  width:300px;background:rgba(22,20,30,0.92);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,0.14);border-radius:16px;
  color:var(--cream-50);font-family:var(--font-sans);font-size:13px;
  box-shadow:0 24px 60px rgba(0,0,0,0.5);
  display:none;
}
.tweaks.open{display:block;}
.tweaks__head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-bottom:1px solid rgba(255,255,255,0.08);
  font-family:var(--font-mono);font-size:11px;letter-spacing:0.08em;
  text-transform:uppercase;color:rgba(247,247,237,0.6);
}
.tweaks__body{padding:12px 16px 16px;display:flex;flex-direction:column;gap:16px;}
.tweaks__row{display:flex;flex-direction:column;gap:6px;}
.tweaks__label{font-size:11px;letter-spacing:0.02em;color:rgba(247,247,237,0.55);
  font-family:var(--font-mono);text-transform:uppercase;}
.tweaks__opts{display:flex;gap:4px;flex-wrap:wrap;}
.tweaks__opts button{
  background:rgba(255,255,255,0.06);color:rgba(247,247,237,0.75);
  border:1px solid rgba(255,255,255,0.08);border-radius:6px;
  padding:6px 10px;font-size:12px;cursor:pointer;
  transition:all 150ms var(--ease-out);font-family:var(--font-sans);
}
.tweaks__opts button:hover{background:rgba(255,255,255,0.1);color:var(--cream-50);}
.tweaks__opts button.on{background:var(--cream-50);color:var(--ink-900);border-color:var(--cream-50);}
.tweaks__swatch{width:22px;height:22px;border-radius:6px;
  border:1px solid rgba(255,255,255,0.15);cursor:pointer;}
.tweaks__swatch.on{outline:2px solid var(--cream-50);outline-offset:2px;}

/* Concept container */
.concept{min-height:100vh;}

/* Site nav (Carl, Blog, Careers, Get Started, Blog Post) */
.site-nav{
  position:fixed;top:0;left:0;right:0;
  display:flex;align-items:center;
  height:56px;padding:0 24px;
  background:var(--ink-900);
  z-index:50;
}
.site-nav__brand{display:flex;align-items:center;gap:14px;}
.site-nav__logo{width:22px;height:22px;display:block;}
.site-nav__wm{font-family:var(--font-mono);font-weight:700;font-size:14px;
  letter-spacing:0.16em;color:#fff;}
.site-nav__links{position:absolute;left:50%;transform:translateX(-50%);
  display:flex;gap:48px;}
.site-nav__link{font-size:14px;color:rgba(255,255,255,0.85);
  letter-spacing:-0.02em;cursor:pointer;transition:color 160ms;}
.site-nav__link:hover{color:#fff;}
.site-nav__cta{margin-left:auto;padding:9px 22px;border-radius:90px;
  border:1px solid rgba(247,247,237,0.18);background:rgba(247,247,237,0.10);
  color:#fff;font-size:14px;letter-spacing:-0.02em;cursor:pointer;
  transition:background 200ms,border-color 200ms;}
.site-nav__cta:hover{background:rgba(247,247,237,0.20);
  border-color:rgba(247,247,237,0.30);}
.site-nav__mobile-cta{display:none;}
.site-nav__mobile-btn{
  display:none;flex-direction:column;gap:5px;margin-left:auto;padding:8px;
  color:#fff;background:transparent;border:0;cursor:pointer;
}
.site-nav__mobile-btn span{display:block;width:24px;height:2px;background:currentColor;}
.site-nav__hairline{position:fixed;top:56px;left:0;right:0;
  height:1px;border:0;margin:0;z-index:50;
  background:linear-gradient(90deg,transparent 0%,
    rgba(255,255,255,0.18) 12%,rgba(255,255,255,0.18) 88%,transparent 100%);}
@media (max-width:860px){
  .site-nav{padding:0 16px;}
  .site-nav__links{
    display:none;position:absolute;top:56px;left:0;right:0;transform:none;
    flex-direction:column;gap:0;padding:14px 20px 18px;
    background:rgba(22,20,30,0.98);border-top:1px solid rgba(255,255,255,0.08);
    border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .site-nav__links--open{display:flex;}
  .site-nav__link{
    padding:13px 0;border-bottom:1px solid rgba(255,255,255,0.07);
  }
  .site-nav__cta{display:none;}
  .site-nav__mobile-cta{
    display:flex;justify-content:center;margin-top:14px;padding:10px 20px;
    border-radius:90px;border:1px solid rgba(247,247,237,0.18);
    background:rgba(247,247,237,0.10);color:#fff;font-size:14px;
  }
  .site-nav__mobile-btn{display:flex;}
}
@media (max-width:420px){
  .site-nav__wm{font-size:12px;letter-spacing:0.12em;}
}

/* Shared marketing primitives */
.m-nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:32px;
  padding:18px 40px;
  --nav-fade:0;
  background:rgba(22,20,30,calc(0.72 * var(--nav-fade)));
  backdrop-filter:blur(calc(14px * var(--nav-fade)));
  -webkit-backdrop-filter:blur(calc(14px * var(--nav-fade)));
  border-bottom:1px solid rgba(255,255,255,calc(0.06 * var(--nav-fade)));
  color:var(--cream-50);
}
.m-nav--light{background:rgba(247,247,237,0.78);color:var(--ink-900);
  border-bottom:1px solid rgba(22,20,30,0.08);}
.m-nav__brand{display:flex;align-items:center;gap:12px;}
.m-nav__word{font-family:var(--font-mono);font-weight:700;font-size:12px;
  letter-spacing:0.08em;}
.m-nav__links{display:flex;gap:28px;margin-left:auto;align-items:center;}
.m-nav__links a:not(.pill-btn){font-size:13px;opacity:0.75;cursor:pointer;
  transition:opacity 150ms;}
.m-nav__links a:not(.pill-btn):hover{opacity:1;}
.m-nav__mobile-btn{
  display:none;
  flex-direction:column;
  gap:5px;
  margin-left:auto;
  padding:4px;
  color:var(--cream-50);
  background:transparent;
  border:0;
  cursor:pointer;
}
.m-nav__mobile-btn span{
  display:block;
  width:24px;
  height:2px;
  background:currentColor;
}

/* hairline gradient dividers (design-system spec: transparent → 20% white → transparent) */
.m-divider{height:1px;border:0;background:linear-gradient(90deg,transparent 0%,rgba(247,247,237,0.20) 50%,transparent 100%);}

.pill-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:-0.02em;
  background:rgba(247,247,237,0.14);color:var(--cream-50);
  border:1px solid rgba(247,247,237,0.18);
  cursor:pointer;transition:all 180ms var(--ease-out);
  text-decoration:none;white-space:nowrap;
}
.pill-btn{transition:background 150ms ease, transform 120ms ease, filter 150ms ease, box-shadow 150ms ease;}
.pill-btn:active{transform:translateY(1px);}
.pill-btn:hover{background:rgba(247,247,237,0.28);}
.pill-btn--solid{background:var(--cream-50);color:var(--ink-900);border-color:var(--cream-50);}
.pill-btn--solid:hover{filter:brightness(1.04);background:var(--cream-50);}
.pill-btn--violet{background:var(--violet-700);color:var(--cream-50);border-color:var(--violet-700);
  box-shadow:0 2px 8px rgba(92,50,240,0.4);}
.pill-btn--violet:hover{filter:brightness(1.08);background:var(--violet-700);}
.pill-btn--ghost-dark{background:rgba(22,20,30,0.06);color:var(--ink-900);border:1px solid rgba(22,20,30,0.15);}
.pill-btn--ghost-dark:hover{background:rgba(22,20,30,0.10);}

.eyebrow{font-family:var(--font-serif);font-style:italic;font-size:18px;
  color:var(--fg-2);letter-spacing:0.005em;font-weight:400;}
.eyebrow--dark{color:rgba(22,20,30,0.7);}

.hairline{height:1px;width:100%;
  background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,0.22) 18%,
    rgba(255,255,255,0.22) 82%,transparent 100%);border:0;margin:0;}
.hairline--dark{background:linear-gradient(90deg,transparent 0%,
  rgba(22,20,30,0.22) 18%,rgba(22,20,30,0.22) 82%,transparent 100%);}

/* ========== Footer shared ========== */
.m-foot{background:var(--ink-900);color:var(--cream-50);padding:80px 40px 32px;
  position:relative;overflow:hidden;}
.m-foot__wm{
  font-family:var(--font-display);font-size:clamp(80px,14vw,180px);
  line-height:0.88;letter-spacing:-0.045em;color:var(--cream-50);
  margin:48px 0 64px;font-weight:400;
}
.m-foot__top{display:flex;align-items:flex-start;gap:20px;}
.m-foot__bot{display:flex;justify-content:space-between;align-items:center;
  padding-top:24px;border-top:1px solid rgba(247,247,237,0.12);
  font-size:13px;color:rgba(247,247,237,0.65);flex-wrap:wrap;gap:16px;}
.m-foot__links{display:flex;gap:28px;}
.m-foot__links a{cursor:pointer;transition:color 150ms;}
.m-foot__links a:hover{color:var(--cream-50);}

/* ---- v2 footer (three-column) ---- */
.m-foot--v2{padding:72px 48px 28px;max-width:1400px;margin:0 auto;}
.m-foot__grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:64px;
  padding-bottom:56px;
}
.m-foot__brand-row{display:flex;align-items:center;gap:14px;margin-bottom:20px;}
.m-foot__brand-word{
  font-family:var(--font-serif);font-size:30px;font-weight:400;
  letter-spacing:-0.015em;color:var(--cream-50);
}
.m-foot__desc{
  font-size:13.5px;line-height:1.55;color:rgba(247,247,237,0.55);
  max-width:320px;margin:0;
}
.m-foot__col{display:flex;flex-direction:column;gap:14px;}
.m-foot__h{
  font-family:var(--font-mono);font-size:10px;letter-spacing:0.12em;
  text-transform:uppercase;color:rgba(247,247,237,0.4);
  margin-bottom:4px;
}
.m-foot__col a{
  font-size:14px;color:rgba(247,247,237,0.72);cursor:pointer;
  transition:color 150ms;
}
.m-foot__col a:hover{color:var(--cream-50);}
.m-foot--v2 .m-foot__bot{
  font-family:var(--font-sans);font-size:13px;
  color:rgba(247,247,237,0.5);
  padding-top:24px;
}
.m-foot__social{display:flex;gap:22px;align-items:center;}
.m-foot__social a{
  color:rgba(247,247,237,0.55);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color 150ms;
}
.m-foot__social a:hover{color:var(--cream-50);}

@media(max-width:768px){
  .m-foot__grid{grid-template-columns:1fr 1fr;gap:40px;}
  .m-foot__brand{grid-column:1/-1;}
}

@media(max-width:900px){
  .m-nav{padding:18px 24px;}
  .m-nav__links{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:16px 24px;
    background:rgba(18,14,23,0.97);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-top:1px solid rgba(255,255,255,0.1);
  }
  .m-nav__links.open{display:flex;}
  .m-nav__links a:not(.pill-btn){
    padding:12px 0;
    border-bottom:1px solid rgba(255,255,255,0.06);
  }
  .m-nav__links .pill-btn{
    justify-content:center;
    margin-top:12px;
  }
  .m-nav__mobile-btn{display:flex;}
}

/* ========== Logo mark ========== */
.logo-mark{width:28px;height:28px;flex-shrink:0;}
.logo-mark--lg{width:80px;height:80px;}
.logo-mark--xl{width:120px;height:120px;}

/* ========== Global placeholder image box ========== */
.ph{background:linear-gradient(135deg,#1B1826 0%,#2A2538 100%);
  border:1px solid rgba(255,255,255,0.08);border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:rgba(247,247,237,0.35);font-family:var(--font-mono);font-size:12px;}