/* AIROS: shared foundation
   Palette "Midnight & Champagne": near-black ink, ivory paper, champagne gold.
   (The variable names are kept from the first version so the other files didn't need changing.) */
:root{
  --graphite:#111214;      /* ink: dark grounds, text on light */
  --graphite-2:#0B0C0D;    /* deeper ink for a tone step */
  --ink-3:#1B1D20;         /* raised surface on ink */
  --paper:#F2F1EE;         /* porcelain ground: cool off-white that suits steel */
  --paper-2:#E5E3DE;       /* porcelain tone step */
  --brass:#C8A866;         /* champagne gold: accent on ink (8.3:1) */
  --brass-ink:#7A5C2B;     /* gold dark enough for text on ivory (5.5:1) */
  --text-2:#55575A;        /* secondary text on ivory (6.9:1) */
  --text-2-dark:rgba(245,241,234,.74); /* secondary text on ink */
  --danger:#E5867A;        /* errors on ink */
  --line-dark:rgba(17,18,20,.16);
  --line-light:rgba(245,241,234,.16);
  --f-logo:'Cormorant Garamond',serif;
  --f-head:'Bellefair',serif;          /* one weight only (400): keep headings at 400, never synthesised bold */
  --f-body:'Assistant',system-ui,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:min(1200px,100% - 2*var(--gutter));
  --gutter:clamp(16px,4vw,48px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden;overflow-x:clip}
body{background:var(--paper);color:var(--graphite);font-family:var(--f-body);font-weight:400;font-size:18px;line-height:1.7;overflow-x:clip;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
.wrap{width:var(--wrap);margin-inline:auto}
/* mono = real watch markings only (Ref. numbers) */
.mono{font-family:var(--f-mono);font-size:13px;letter-spacing:.06em;direction:ltr;unicode-bidi:isolate}
h1,h2,h3{font-family:var(--f-head);font-weight:400;font-synthesis:none;line-height:1.1;letter-spacing:0}
h1 em,h2 em{font-style:normal;color:inherit}
h2{font-size:clamp(36px,5vw,62px)}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}
.dark :focus-visible{outline-color:var(--brass)}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* buttons: square, one fill */
.btn{display:inline-flex;align-items:center;gap:12px;min-height:54px;padding:0 30px;font-family:var(--f-body);font-size:16px;font-weight:500;border:1px solid var(--graphite);background:var(--graphite);color:var(--paper);cursor:pointer;transition:background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease),transform .2s var(--ease)}
.btn:hover{background:var(--brass);border-color:var(--brass);color:var(--graphite)}
.btn:active{transform:scale(.98)}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(-5px)}
.btn.is-off,a.is-off{cursor:default}
.btn.is-off:hover{background:var(--graphite);border-color:var(--graphite);color:var(--paper)}
.btn.ghost.is-off:hover{background:transparent;color:var(--graphite)}
.dark .btn.is-off:hover,.menu .btn.is-off:hover{background:var(--brass);border-color:var(--brass);color:var(--graphite)}
.btn .wa-ic{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.btn.ghost{background:transparent;color:var(--graphite)}
.btn.ghost:hover{background:var(--graphite);color:var(--paper);border-color:var(--graphite)}
.dark .btn{background:var(--brass);color:var(--graphite);border-color:var(--brass)}
.dark .btn:hover{background:var(--paper);border-color:var(--paper)}

/* header: centred logo + menu button */
.site-head{position:fixed;inset:0 0 auto;z-index:50;color:var(--graphite);transition:background .45s var(--ease),color .45s var(--ease)}
.site-head.scrolled{background:var(--paper)}
.site-head.on-dark{color:var(--paper)}
.site-head.on-dark.scrolled{background:var(--graphite)}
.site-head.clear.scrolled{background:transparent}
.head-in{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:88px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:38px}
.brand span{font-family:var(--f-logo);font-size:26px;font-weight:500;letter-spacing:.32em;direction:ltr;padding-left:.32em}
.site-head .brand{grid-column:2;flex-direction:column;gap:2px}
/* gold mark: deeper gold on light grounds, champagne gold on dark ones (plain <img> so it also works from file://) */
.site-head .brand .mk{width:46px;height:auto}
.site-head .mk-on-dark,.site-head.on-dark .mk-on-light{display:none}
.site-head.on-dark .mk-on-dark{display:block}
/* menu button: three equal lines + label */
.menu-btn{grid-column:1;justify-self:start;display:inline-flex;align-items:center;gap:12px;min-height:44px;padding:0 4px;background:none;border:0;color:inherit;font:inherit;font-size:15px;font-weight:500;cursor:pointer}
.menu-btn .bars{display:grid;gap:5px;width:24px}
.menu-btn .bars i{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .35s var(--ease)}
.menu-btn:hover .bars i:nth-child(2){transform:translateX(-4px)}
.head-end{grid-column:3;justify-self:end}

/* side drawer menu (slides in from the menu button's side) */
.menu-scrim{position:fixed;inset:0;z-index:59;background:rgba(11,12,13,.5);opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility 0s .45s}
.menu-scrim.open{opacity:1;visibility:visible;transition:opacity .45s var(--ease),visibility 0s}
.menu{position:fixed;top:0;bottom:0;right:0;z-index:60;width:min(320px,80vw);display:flex;flex-direction:column;padding:22px 26px 32px;background:var(--graphite);color:var(--paper);box-shadow:0 0 60px rgba(0,0,0,.35);transform:translateX(100%);visibility:hidden;transition:transform .55s cubic-bezier(.7,0,.2,1),visibility 0s .55s;overflow-y:auto}
.menu.open{transform:none;visibility:visible;transition:transform .55s cubic-bezier(.7,0,.2,1),visibility 0s}
.menu-top{display:flex;justify-content:space-between;align-items:center}
.menu-top .brand img{width:40px}
.menu-close{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 4px;background:none;border:0;color:var(--paper);font:inherit;font-size:15px;font-weight:500;cursor:pointer}
.menu-close .x{position:relative;width:22px;height:22px}
.menu-close .x i{position:absolute;top:10px;left:0;width:22px;height:2px;border-radius:2px;background:currentColor;transform:rotate(45deg)}
.menu-close .x i + i{transform:rotate(-45deg)}
.menu-links{list-style:none;display:grid;gap:2px;margin-top:clamp(36px,7vh,64px)}
.menu-links a{display:flex;align-items:baseline;gap:14px;padding:9px 0;font-family:var(--f-head);font-synthesis:none;font-size:clamp(20px,1.8vw,23px);line-height:1.2;opacity:0;transform:translateX(24px);transition:opacity .5s var(--ease),transform .5s var(--ease),color .3s}
.menu-links a .ix{font-family:var(--f-logo);font-size:14px;color:var(--brass);min-width:2.2em;direction:ltr}
.menu-links a:hover,.menu-links a[aria-current="page"]{color:var(--brass)}
.menu.open .menu-links a{opacity:1;transform:none}
.menu.open .menu-links li:nth-child(1) a{transition-delay:.18s}
.menu.open .menu-links li:nth-child(2) a{transition-delay:.23s}
.menu.open .menu-links li:nth-child(3) a{transition-delay:.28s}
.menu.open .menu-links li:nth-child(4) a{transition-delay:.33s}
.menu.open .menu-links li:nth-child(5) a{transition-delay:.38s}
.menu-social{list-style:none;display:flex;gap:6px;margin-top:24px;margin-inline-start:-10px;opacity:0;transition:opacity .5s var(--ease) .4s}
.menu.open .menu-social{opacity:1}
.menu-social a{display:grid;place-items:center;width:40px;height:40px;color:var(--paper);transition:color .3s}
.menu-social a:hover,.menu-social a:focus-visible{color:var(--brass)}
.menu-social svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.menu-foot{margin-top:auto;padding-top:32px;display:grid;gap:16px}
.menu-foot .btn{justify-content:center}
.menu-foot p{font-family:var(--f-head);font-size:16px;line-height:1.5;color:var(--brass);text-align:center}
.menu .btn{background:var(--brass);color:var(--graphite);border-color:var(--brass)}
.menu .btn:hover{background:var(--paper);border-color:var(--paper)}
body.menu-open{overflow:hidden}

/* hero watch plate + callouts (home) */
.plate{position:relative;aspect-ratio:1;max-width:560px;justify-self:center;width:100%}
.plate img{width:100%;-webkit-mask-image:linear-gradient(transparent 0,#000 12%,#000 88%,transparent 100%);mask-image:linear-gradient(transparent 0,#000 12%,#000 88%,transparent 100%)}
.callout{position:absolute;display:flex;align-items:center;gap:10px;color:var(--graphite);white-space:nowrap;transform:translateY(-50%);z-index:2}
.callout i{display:block;height:1px;background:var(--graphite);width:clamp(28px,5vw,64px);opacity:.55}
.callout .dot{width:9px;height:9px;border-radius:50%;background:var(--paper);border:2px solid var(--brass-ink)}
.callout .lbl{font-size:13px;background:var(--paper);padding:6px 12px;line-height:1.3}
.callout .lbl b{font-weight:500}
/* dot positions measured on the hero render (1000x1000) */
.c2{left:69.5%;top:36%}  /* bezel rim */
.c1{left:59%;top:60%}    /* dial, lower right */
.c1 i{width:clamp(64px,9vw,118px)}
.c3{left:61%;top:84%}    /* strap edge */

/* reveal */
.rv{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}

/* sections */
section{position:relative}
.sec{padding:clamp(96px,12vw,170px) 0}
.dark{background:var(--graphite);color:var(--paper)}
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:clamp(48px,7vw,88px)}
.sec-head p{max-width:42ch;color:var(--text-2)}
.dark .sec-head p{color:var(--text-2-dark)}

/* manifesto (personal) */
.manifesto{text-align:center}
.manifesto img{width:72px;margin:0 auto 36px}
.manifesto blockquote{font-family:var(--f-head);font-size:clamp(26px,3.2vw,36px);line-height:1.4;max-width:24ch;margin:0 auto}
.manifesto cite{display:block;margin-top:28px;font-style:normal;color:var(--brass-ink)}

/* form */
form{display:grid;gap:26px}
.field{display:grid;gap:6px}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field textarea{font:inherit;font-size:17px;color:var(--graphite);background:transparent;border:0;border-bottom:1px solid rgba(17,18,20,.35);padding:10px 0;border-radius:0;transition:border-color .3s;width:100%;-webkit-appearance:none;appearance:none}
.field textarea{resize:vertical;min-height:72px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brass)}
.field .err{font-size:13px;color:var(--danger);min-height:0}
.field .err:empty{display:none}
.field [aria-invalid="true"]{border-color:var(--danger)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.form-done{display:none;padding:32px;background:var(--paper-2)}
.form-done h3{font-size:26px;margin-bottom:8px}
form.sent{display:none}
form.sent + .form-done{display:block}

/* footer (inner pages) */
.foot{padding:80px 0 40px;background:var(--graphite-2)}
.foot-top{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;padding-bottom:40px}
.foot .brand span{font-size:30px}
.foot-links{display:flex;gap:32px;font-size:15px;color:var(--text-2-dark)}
.foot-links a:hover{color:var(--brass)}
.foot-bot{display:flex;justify-content:space-between;gap:16px;font-size:14px;color:var(--text-2-dark);flex-wrap:wrap}

/* responsive */
@media (max-width:960px){
  .sec-head{grid-template-columns:1fr;gap:18px}
}
@media (max-width:640px){
  .menu{width:min(250px,68vw);padding:18px 20px 26px} /* phones: a narrow drawer, most of the page stays visible */
  .menu-foot .btn{padding:0 16px;font-size:15px}
  body{font-size:16px}
  .head-in{height:72px}
  .brand img{width:32px}
  .site-head .brand .mk{width:40px}
  .row2{grid-template-columns:1fr}
  .foot-top{flex-direction:column;align-items:flex-start}
  .callout .lbl{font-size:12px;padding:5px 9px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
}