/* ====================================================
   REGISTRATION CROP-MARKS (reusable corner L-marks)
   8 hairline segments = 4 corner L's. Amber. Used static on the hero frame
   and proximity-driven (opacity:--p) on every card.
   ==================================================== */
.crop-marks{
  --cl:13px;
  background:var(--crop-bg);
}

/* ====================================================
   CARD (drafting plate). Proximity --p scrubs: amber frame in, crop-marks in,
   straight-up lift. No glow, no binary hover. JS smooths --p frame-by-frame,
   so NO CSS transition on the --p-driven props (a transition would fight it).
   ==================================================== */
.glass-card{
  position:relative; z-index:1; --p:0;
  /* engraved hairline: lighter top edge -> darker bottom, respects the radius */
  background:
    linear-gradient(var(--bg-card),var(--bg-card)) padding-box,
    linear-gradient(180deg,var(--border-strong),var(--border)) border-box;
  border:1px solid transparent;
  border-radius:var(--r-md);
  translate:0 calc(var(--p) * -6px);
  /* lit plate: tight contact + ambient + key + inner top highlight (static stack —
     only translate animates on proximity, so the compositor handles the lift) */
  box-shadow:
    0 1px 1px rgba(0,0,0,0.5),
    0 2px 5px rgba(0,0,0,0.28),
    0 14px 32px rgba(0,0,0,0.36),
    0 26px 54px rgba(0,0,0,0.20),
    inset 0 1px 0 rgba(255,255,255,0.05);
  will-change:translate;
}
/* tightening amber hairline frame */
.glass-card::before{
  content:'';position:absolute;inset:0;border:1px solid var(--accent);
  border-radius:inherit;opacity:calc(var(--p) * 0.9);pointer-events:none;
}
/* registration crop-marks — faintly present at rest, brighten on proximity */
.glass-card::after{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:calc(0.13 + var(--p) * 0.87);
  --cl:13px;
  background:var(--crop-bg);
}

/* ====================================================
   BUTTONS (drafting rectangles, mono caps, tactile press)
   Transform is composed from two custom properties so the magnetic pull
   (JS-smoothed --mx/--my, no transition) and the press scale (--pr, CSS
   transition via @property) never fight each other.
   ==================================================== */
@property --mx{syntax:'<length>';initial-value:0px;inherits:false}
@property --my{syntax:'<length>';initial-value:0px;inherits:false}
@property --pr{syntax:'<number>';initial-value:1;inherits:false}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 24px;border-radius:var(--r-sm);
  font-family:var(--mono);font-weight:500;font-size:var(--label-lg);letter-spacing:0.1em;text-transform:uppercase;
  border:1px solid transparent;
  transform:translate(var(--mx,0px),var(--my,0px)) scale(var(--pr,1));
  transition:border-color 180ms ease,color 180ms ease,background-color 180ms ease,--pr 120ms ease;
}
.btn:active{--pr:0.96}
.btn svg{width:15px;height:15px;flex-shrink:0}
.btn-primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep)}
.btn-secondary{background:transparent;color:var(--text-primary);border-color:var(--border-strong)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn-ghost{background:transparent;color:var(--text-secondary);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
/* metallic glint rake across solid-amber controls on hover (uses @keyframes glint) */
.btn-primary,.nav-cta{position:relative;overflow:hidden}
.btn-primary::after,.nav-cta::after{content:'';position:absolute;inset:0;pointer-events:none;background:linear-gradient(108deg,transparent 38%,rgba(255,255,255,0.40) 50%,transparent 62%);transform:translateX(-130%)}
.btn-primary:hover::after,.nav-cta:hover::after{animation:glint 0.7s ease 1}

/* ====================================================
   SCROLL REVEAL
   ==================================================== */
.reveal{
  opacity:0;transform:translateY(18px);filter:blur(5px);
  transition:opacity 0.55s cubic-bezier(0.22,1,0.36,1),transform 0.55s cubic-bezier(0.22,1,0.36,1),filter 0.55s cubic-bezier(0.22,1,0.36,1);
}
.reveal.visible{opacity:1;transform:none;filter:none}
.reveal-stagger > *{opacity:0;transform:translateY(16px)}
.reveal-stagger.visible > *{animation:revealUp 0.55s cubic-bezier(0.22,1,0.36,1) forwards}
.reveal-stagger.visible > *:nth-child(1){animation-delay:0ms}
.reveal-stagger.visible > *:nth-child(2){animation-delay:40ms}
.reveal-stagger.visible > *:nth-child(3){animation-delay:80ms}
.reveal-stagger.visible > *:nth-child(4){animation-delay:120ms}
@keyframes revealUp{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  .reveal-stagger > *{opacity:1;transform:none;animation:none}
}

/* ====================================================
   SECTION HEADER — engraved folio numeral + dimension line
   ==================================================== */
section{overflow:hidden}
/* elevation rhythm — alternating plates lift one tonal step; soft-faded top/bottom
   so there's no hard seam and the drafting field still reads through */
#projects,#pricing,#contact{
  background:linear-gradient(180deg,transparent 0%,rgba(255,255,255,0.013) 15%,rgba(255,255,255,0.013) 85%,transparent 100%);
}
.container{max-width:1160px;margin:0 auto;padding:clamp(80px,10vw,118px) 24px}
.sheet-head{margin-bottom:clamp(40px,6vw,60px)}
.sheet-no{
  display:block;font-family:var(--serif);font-weight:500;font-variation-settings:'opsz' 144;
  font-size:clamp(2.6rem,7vw,5.5rem);line-height:0.8;letter-spacing:-0.02em;
  margin-bottom:14px;
  /* hollow engraved numeral with a faint amber-leaf bleed (reuses the foil ramp) */
  -webkit-text-stroke:1px rgba(201,136,43,0.5);
  color:transparent;
  background:linear-gradient(168deg,rgba(251,200,104,0.16) 0%,rgba(201,136,43,0.06) 60%,transparent 100%);
  -webkit-background-clip:text;background-clip:text;
}
/* fluid-text char spans inside the numeral: background-clip:text doesn't
   traverse into inline-block descendants, so each char re-applies the faint
   amber-leaf bleed (vertically uniform => reads continuous). The hollow
   stroke survives on its own — -webkit-text-stroke inherits. */
.sheet-no .ft-char{
  background:linear-gradient(168deg,rgba(251,200,104,0.16) 0%,rgba(201,136,43,0.06) 60%,transparent 100%);
  -webkit-background-clip:text;background-clip:text;
}
.sheet-rule{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.sheet-tag{font-family:var(--mono);font-size:var(--label-md);text-transform:uppercase;letter-spacing:0.14em;color:var(--text-muted);white-space:nowrap}
.sheet-line{flex:1;height:1px;background:var(--border);position:relative;clip-path:inset(0 100% 0 0);transition:clip-path 0.85s cubic-bezier(0.22,1,0.36,1) 0.18s}
.sheet-head.visible .sheet-line{clip-path:inset(0 0 0 0)}
.sheet-line::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:0;height:0;border-style:solid;border-width:3px 5px 3px 0;border-color:transparent var(--accent) transparent transparent}
.sheet-line::after{content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);width:0;height:0;border-style:solid;border-width:3px 0 3px 5px;border-color:transparent transparent transparent var(--accent)}
.section-title{font-size:clamp(2rem,4vw,3.1rem);font-weight:500;font-variation-settings:'opsz' 144;letter-spacing:-0.025em;color:var(--text-primary);margin-bottom:14px}
.section-lead{font-family:var(--sans);font-weight:300;font-size:1.05rem;line-height:1.65;color:var(--text-secondary);max-width:560px}

/* ====================================================
   REGISTRATION RETICLE — a fine crosshair trails the pointer (RETICLE in
   js/main.js smooths it); over interactive elements it opens into four
   corner brackets, like a drafting machine locking onto a target. The native
   cursor stays — this annotates, it doesn't replace.
   ==================================================== */
#reticle{position:fixed;left:0;top:0;z-index:9996;pointer-events:none;opacity:0;transition:opacity 220ms ease}
#reticle.live{opacity:1}
#reticle .r-h,#reticle .r-v{position:absolute;background:var(--accent);opacity:0.75;transition:opacity 160ms ease}
#reticle .r-h{width:11px;height:1px;left:-5.5px;top:-0.5px}
#reticle .r-v{width:1px;height:11px;left:-0.5px;top:-5.5px}
#reticle .r-b{
  position:absolute;width:7px;height:7px;border:0 solid var(--accent);opacity:0;
  transition:transform 200ms cubic-bezier(0.22,1,0.36,1),opacity 160ms ease;
}
#reticle .r-b.tl{border-top-width:1px;border-left-width:1px;transform:translate(-5px,-5px)}
#reticle .r-b.tr{border-top-width:1px;border-right-width:1px;transform:translate(-2px,-5px)}
#reticle .r-b.bl{border-bottom-width:1px;border-left-width:1px;transform:translate(-5px,-2px)}
#reticle .r-b.br{border-bottom-width:1px;border-right-width:1px;transform:translate(-2px,-2px)}
#reticle.on .r-h,#reticle.on .r-v{opacity:0}
#reticle.on .r-b{opacity:0.9}
#reticle.on .r-b.tl{transform:translate(-14px,-14px)}
#reticle.on .r-b.tr{transform:translate(7px,-14px)}
#reticle.on .r-b.bl{transform:translate(-14px,7px)}
#reticle.on .r-b.br{transform:translate(7px,7px)}

/* ====================================================
   MEASURE OVERLAY — hovering a project plate draws true dimension lines
   around it with its rendered size in px (MEASURE in js/main.js). The
   cursor is the measuring tool. Asymmetric choreography: lines DRAW IN
   around a plate (ease-out, labels follow), RETRACT when the cursor moves
   on (quicker ease-in, labels lead) — and re-draw around the next plate
   instead of teleporting (the 190ms swap beat lives in js/main.js MEASURE).
   ==================================================== */
#measure{position:fixed;left:0;top:0;z-index:40;pointer-events:none;opacity:0;transition:opacity 150ms cubic-bezier(0.4,0,1,1)}
#measure.show{opacity:1;transition:opacity 180ms ease-out}
#measure .m-top,#measure .m-left{position:absolute;background:var(--accent);opacity:0.55}
#measure .m-top{height:1px;transform:scaleX(0);transform-origin:center;transition:transform 170ms cubic-bezier(0.4,0,1,1)}
#measure .m-left{width:1px;transform:scaleY(0);transform-origin:center;transition:transform 170ms cubic-bezier(0.4,0,1,1)}
#measure.show .m-top{transform:scaleX(1);transition:transform 260ms cubic-bezier(0.22,1,0.36,1) 30ms}
#measure.show .m-left{transform:scaleY(1);transition:transform 260ms cubic-bezier(0.22,1,0.36,1) 30ms}
#measure .m-top::before,#measure .m-top::after,
#measure .m-left::before,#measure .m-left::after{content:'';position:absolute;width:0;height:0;border-style:solid}
#measure .m-top::before{left:0;top:50%;transform:translateY(-50%);border-width:3px 5px 3px 0;border-color:transparent var(--accent) transparent transparent}
#measure .m-top::after{right:0;top:50%;transform:translateY(-50%);border-width:3px 0 3px 5px;border-color:transparent transparent transparent var(--accent)}
#measure .m-left::before{top:0;left:50%;transform:translateX(-50%);border-width:0 3px 5px 3px;border-color:transparent transparent var(--accent) transparent}
#measure .m-left::after{bottom:0;left:50%;transform:translateX(-50%);border-width:5px 3px 0 3px;border-color:var(--accent) transparent transparent transparent}
#measure .m-lab{
  position:absolute;font-family:var(--mono);font-size:var(--label-xs);letter-spacing:0.12em;
  color:var(--accent);white-space:nowrap;opacity:0;transition:opacity 110ms cubic-bezier(0.4,0,1,1);
  font-variant-numeric:tabular-nums lining-nums;
}
#measure.show .m-lab{opacity:0.9;transition:opacity 200ms ease-out 140ms}
#measure .m-wlab{left:50%;top:-7px;transform:translate(-50%,-100%)}
#measure .m-hlab{left:-7px;top:50%;transform:translate(-100%,-50%) rotate(180deg);writing-mode:vertical-rl}

/* ====================================================
   SHEET HUD — fixed drawing-set readout (bottom-left). The label morphs with
   the scroll-spy via fluid-text .to(); desktop only, purely decorative.
   ==================================================== */
#sheet-hud{
  position:fixed;left:22px;bottom:24px;z-index:900;pointer-events:none;
  display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:var(--label-xs);letter-spacing:0.14em;text-transform:uppercase;
  color:var(--text-muted);
  /* hidden inside the hero — the hero's own corner crop-marks live down here.
     FLUID PROPAGATION adds .show once the scroll-spy leaves DWG-00. */
  opacity:0;transform:translateY(8px);
  transition:opacity 360ms ease,transform 360ms cubic-bezier(0.22,1,0.36,1);
}
#sheet-hud.show{opacity:1;transform:none}
#sheet-hud .hud-tick{width:18px;height:1px;background:var(--accent);opacity:0.8;flex-shrink:0}
#sheet-hud .hud-label{white-space:nowrap}

/* ====================================================
   BOOK NUDGE — non-intrusive commission prompt as a tall drafting rail.
   Clamped to the right edge, vertically centred; slides in from the right
   (ease-out). No scrim, never blocks scroll. Crop-marks via the shared
   --crop-bg. z-index below the dock (1000) so dock tooltips win.
   Both transform states keep the -50% Y so the slide and the vertical
   centring compose. BOOK NUDGE in js/main.js drives the timed re-show.
   ==================================================== */
#book-nudge{
  position:fixed;right:clamp(14px,1.6vw,26px);top:50%;z-index:980;
  width:248px;max-width:calc(100vw - 28px);
  min-height:clamp(320px,44vh,440px);max-height:calc(100vh - 40px);
  display:flex;flex-direction:column;
  padding:var(--space-7) var(--space-5);
  background:
    linear-gradient(var(--bg-elevated),var(--bg-elevated)) padding-box,
    linear-gradient(180deg,var(--border-strong),var(--border)) border-box;
  border:1px solid transparent;border-radius:var(--r-md);
  box-shadow:0 1px 1px rgba(0,0,0,0.5),0 18px 40px rgba(0,0,0,0.45),0 30px 64px rgba(0,0,0,0.26);
  /* hidden: parked off the right edge, faded. Enters ease-out. */
  opacity:0;transform:translate(calc(100% + 30px),-50%);
  transition:opacity 460ms cubic-bezier(0.22,1,0.36,1),transform 460ms cubic-bezier(0.22,1,0.36,1);
  will-change:transform,opacity;
}
#book-nudge.show{opacity:1;transform:translate(0,-50%)}
/* registration crop-marks — faint amber corners, the plate's signature */
#book-nudge::after{content:'';position:absolute;inset:0;pointer-events:none;border-radius:inherit;
  --cl:12px;opacity:0.55;background:var(--crop-bg)}
.bn-label{
  font-family:var(--mono);font-size:var(--label-xs);font-weight:500;letter-spacing:0.16em;text-transform:uppercase;
  color:var(--accent);margin-bottom:var(--space-4);display:flex;align-items:center;gap:8px;
}
.bn-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 7px rgba(242,169,59,0.6);flex-shrink:0}
@media (prefers-reduced-motion:no-preference){ .bn-dot{animation:commPulse 2.6s ease-in-out infinite} }
/* thin amber dimension rule under the label — gives the rail its drafting spine */
.bn-rule{height:1px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0.7;margin-bottom:var(--space-4)}
.bn-line{
  font-family:var(--sans);font-weight:300;font-size:0.95rem;line-height:1.55;
  color:var(--text-secondary);margin-bottom:var(--space-5);text-wrap:pretty;
}
.bn-cta{width:100%;justify-content:center;white-space:nowrap}
/* meta pinned to the bottom of the rail — the tall rectangle reads as a
   proper drafting strip (label/value up top, sign-off at the foot) */
.bn-meta{
  margin-top:auto;padding-top:var(--space-5);font-family:var(--mono);font-size:var(--label-xs);
  letter-spacing:0.1em;text-transform:uppercase;color:var(--text-muted);
}
.bn-close{
  position:absolute;top:10px;right:10px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);color:var(--text-muted);transition:color 160ms ease,background-color 160ms ease,transform 120ms ease;
}
.bn-close svg{width:15px;height:15px}
.bn-close:hover{color:var(--text-primary);background:var(--bg-card-hover)}
.bn-close:active{transform:scale(0.96)}
/* >=40px hit area without enlarging the 28px glyph */
.bn-close::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:42px;height:42px}
/* quiet permanent opt-out at the foot of the rail */
.bn-dismiss{
  margin-top:var(--space-3);align-self:flex-start;background:none;border:0;cursor:pointer;padding:4px 0;
  font-family:var(--mono);font-size:var(--label-xs);letter-spacing:0.08em;text-transform:uppercase;
  color:var(--text-muted);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--border-strong);
  transition:color 160ms ease;
}
.bn-dismiss:hover{color:var(--text-secondary)}

/* phone: dock is hidden, so collapse to a slim bottom bar that slides up */
@media(max-width:600px){
  #book-nudge{
    left:12px;right:12px;top:auto;bottom:12px;width:auto;max-width:none;
    min-height:0;max-height:none;
    flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px var(--space-3);
    padding:10px 12px;
    transform:translateY(calc(100% + 18px));
  }
  #book-nudge.show{transform:none}
  .bn-rule,.bn-line,.bn-meta{display:none}
  .bn-close{order:1;position:static;margin:0;flex-shrink:0}
  .bn-close::before{width:40px;height:40px}
  .bn-label{order:2;flex:1 1 auto;min-width:0;margin-bottom:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .bn-dismiss{order:3;flex-shrink:0;margin:0;align-self:center;font-size:0.62rem;padding:2px 0;text-decoration-color:var(--border)}
  .bn-cta{order:4;flex-basis:100%;width:100%;margin:0;justify-content:center;padding:11px 16px}
}

/* ====================================================
   NAV
   ==================================================== */
#nav{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:1000;
  width:max-content;max-width:calc(100vw - 32px);
  background:rgba(16,18,21,0.72);
  backdrop-filter:blur(20px) saturate(1.2);-webkit-backdrop-filter:blur(20px) saturate(1.2);
  border:1px solid var(--border);border-radius:var(--r-lg);
  padding:0 8px 0 18px;display:flex;align-items:center;gap:18px;height:54px;
  box-shadow:0 12px 34px rgba(0,0,0,0.5);
}
.nav-logo{font-family:var(--serif);font-weight:600;font-size:1.18rem;letter-spacing:-0.01em;color:var(--text-primary)}
.nav-links{display:none;align-items:center;gap:2px}
.nav-link{
  display:flex;align-items:center;gap:7px;padding:7px 11px;position:relative;
  font-family:var(--mono);font-size:var(--label-md);letter-spacing:0.1em;text-transform:uppercase;
  color:var(--text-muted);transition:color 180ms ease,transform 120ms ease;
}
.nav-link svg{width:13px;height:13px;stroke:currentColor;fill:none;flex-shrink:0}
.nav-link::after{content:'';position:absolute;left:11px;right:11px;bottom:3px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 180ms cubic-bezier(0.22,1,0.36,1)}
.nav-link:hover{color:var(--text-primary)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--accent)}
.nav-link:active{transform:scale(0.96)}
.nav-cta{
  font-family:var(--mono);font-size:var(--label-md);font-weight:500;letter-spacing:0.1em;text-transform:uppercase;
  background:var(--accent);color:var(--on-accent);padding:9px 16px;border-radius:var(--r-md);
  transform:translate(var(--mx,0px),var(--my,0px)) scale(var(--pr,1));
  transition:background-color 180ms ease,--pr 120ms ease;
}
.nav-cta:hover{background:var(--accent-deep)}
.nav-cta:active{--pr:0.96}
.nav-hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:8px;min-width:44px;min-height:44px;cursor:pointer}
.nav-hamburger span{display:block;width:20px;height:2px;background:var(--text-secondary);border-radius:1px;transition:transform 220ms cubic-bezier(0.22,1,0.36,1),opacity 160ms ease}
/* open → the three bars morph into an X (gap 5 + bar 2 = 7px per step), interruptible mid-toggle */
.nav-open .nav-hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-hamburger span:nth-child(2){opacity:0}
.nav-open .nav-hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}