/* ============================================================
   CLAVIRO · Midnight Gold
   Shared stylesheet — index / one / sessions / reserve
   ============================================================ */

/* ---- Tokens ---- */
:root{
  /* color */
  --bg:#080A10;
  --surface:#101420;
  --surface-hover:#182030;
  --border:#1C2332;
  --gold:#D4AF37;
  --gold-dim:#A8893A;
  --text:#F5F3F0;
  --text-2:#9098A8;
  --muted:#505868;
  --success:#66BB6A;
  --error:#EF5350;

  /* tints */
  --gold-wash:rgba(212,175,55,0.08);
  --gold-line:rgba(212,175,55,0.22);
  --border-soft:rgba(245,243,240,0.06);

  /* spacing scale 4·8·12·16·24·32 */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s6:24px; --s8:32px;
  --s12:48px; --s16:64px; --s20:80px; --s28:112px;

  /* radii */
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:100px;

  --maxw:1120px;

  /* type */
  --serif:'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --sans:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --ease:cubic-bezier(0.22,0.61,0.36,1);
}

*,*::before,*::after{ margin:0; padding:0; box-sizing:border-box; }

html{ font-size:16px; -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale; scroll-behavior:smooth; }

body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-weight:400;
  overflow-x:hidden;
  position:relative;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* ---- Ambient: film grain + single soft gold glow ---- */
body::before{ /* grain */
  content:''; position:fixed; inset:0; z-index:0; pointer-events:none;
  opacity:0.022;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body::after{ /* gold glow */
  content:''; position:fixed; top:-280px; left:50%; transform:translateX(-50%);
  width:900px; height:700px; border-radius:50%;
  background:var(--gold); opacity:0.05; filter:blur(200px);
  z-index:0; pointer-events:none;
}

/* ---- Layout primitives ---- */
.wrap{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 var(--s8); position:relative; z-index:1; }
main{ flex:1 0 auto; position:relative; z-index:1; }
section{ padding:var(--s28) 0; }
.section-tight{ padding:var(--s20) 0; }

/* ---- Type scale ---- */
h1,h2,h3,h4{ font-family:var(--serif); font-weight:500; letter-spacing:-0.005em; line-height:1.14; color:var(--text); text-wrap:balance; }
h1{ font-size:clamp(2.8rem,6vw,4.6rem); font-weight:500; line-height:1.12; }
h2{ font-size:clamp(2.1rem,4vw,3.1rem); }
h3{ font-size:clamp(1.5rem,2.4vw,1.9rem); }
h4{ font-size:1.3rem; }

p{ color:var(--text-2); font-size:1.02rem; }
.lead{ font-size:clamp(1.08rem,1.8vw,1.28rem); color:var(--text-2); font-weight:300; line-height:1.6; max-width:56ch; text-wrap:pretty; }

a{ color:var(--text); text-decoration:none; transition:color .25s var(--ease); }

.eyebrow{
  font-family:var(--mono); font-size:0.72rem; font-weight:500;
  letter-spacing:0.14em; text-transform:uppercase; color:var(--gold-dim);
  display:inline-block;
}
.eyebrow.gold{ color:var(--gold); }

.serif-em{ font-family:var(--serif); font-style:italic; font-weight:500; color:var(--gold); }

/* ---- Buttons ---- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:var(--s2);
  font-family:var(--sans); font-size:0.92rem; font-weight:500; letter-spacing:0.01em;
  padding:0.85rem 1.6rem; border-radius:var(--r-pill); border:1px solid transparent;
  cursor:pointer; transition:all .28s var(--ease); white-space:nowrap;
}
.btn-gold{ background:var(--gold); color:#0A0A0A; }
.btn-gold:hover{ background:#E0BC44; transform:translateY(-1px); box-shadow:0 10px 30px -10px rgba(212,175,55,0.5); }
.btn-ghost{ background:transparent; color:var(--text); border-color:var(--border); }
.btn-ghost:hover{ border-color:var(--gold-line); color:var(--text); background:var(--gold-wash); }
.btn-lg{ padding:1rem 2rem; font-size:1rem; }
.btn svg{ width:16px; height:16px; }

/* ---- Nav ---- */
.nav{
  position:sticky; top:0; z-index:50;
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  background:rgba(8,10,16,0.72);
  border-bottom:1px solid var(--border-soft);
}
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:74px; gap:var(--s8); }
.nav-logo{ display:flex; align-items:center; flex:none; }
.nav-logo img{ height:26px; width:auto; display:block; }
.nav-links{ display:flex; align-items:center; gap:var(--s8); margin-left:auto; }
.nav-links a{ font-size:0.92rem; color:var(--text-2); font-weight:400; position:relative; padding:0.25rem 0; }
.nav-links a:hover{ color:var(--text); }
.nav-links a.active{ color:var(--text); }
/* keep button box + colors correct despite .nav-links a specificity */
.nav-links a.btn{ color:var(--text); padding:0.6rem 1.35rem; }
.nav-links a.btn-gold,
.nav-links a.btn-gold:hover{ color:#0A0A0A; }
.nav-links a.btn-ghost:hover{ color:var(--text); }
.nav-links a.active::after{
  content:''; position:absolute; left:0; right:0; bottom:-2px; height:1px; background:var(--gold);
}
.nav-cta{ margin-left:var(--s4); }

/* hamburger */
.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer;
  padding:8px; margin:-8px; z-index:60;
}
.nav-toggle span{ width:22px; height:1.5px; background:var(--text); transition:all .3s var(--ease); display:block; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

/* ---- Hero ---- */
.hero{ padding:var(--s28) 0 var(--s20); }
.hero h1{ margin-bottom:var(--s8); padding-bottom:0.1em; max-width:20ch; }
.hero .eyebrow{ margin-bottom:var(--s6); }
.hero .lead{ margin-bottom:var(--s8); }
.hero-actions{ display:flex; gap:var(--s4); flex-wrap:wrap; align-items:center; }

/* ---- Cards / grids ---- */
.grid{ display:grid; gap:var(--s6); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }

.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-lg);
  padding:var(--s8); transition:border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.card:hover{ border-color:var(--gold-line); background:var(--surface-hover); }
.card h3{ margin-bottom:var(--s3); font-size:1.4rem; }
.card p{ font-size:0.95rem; }
.card .card-icon{ width:34px; height:34px; margin-bottom:var(--s6); color:var(--gold); }
.card .card-icon svg{ width:100%; height:100%; stroke:var(--gold); fill:none; stroke-width:1.4; }

/* numbered steps */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--s8); }
.step{ position:relative; }
.step .step-num{ font-family:var(--serif); font-size:2.4rem; color:var(--gold); line-height:1; margin-bottom:var(--s4); font-weight:500; }
.step h3{ font-size:1.35rem; margin-bottom:var(--s2); }
.step p{ font-size:0.95rem; }

/* ---- Section header ---- */
.section-head{ max-width:60ch; margin-bottom:var(--s16); }
.section-head .eyebrow{ margin-bottom:var(--s4); }
.section-head h2{ margin-bottom:var(--s4); }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---- Dividers ---- */
.rule{ height:1px; background:var(--border); border:none; }
.rule-gold{ height:1px; width:56px; background:var(--gold); border:none; opacity:0.6; }

/* ---- Specs / tables ---- */
.spec-table{ width:100%; border-collapse:collapse; border:1px solid var(--border); border-radius:var(--r-lg); overflow:hidden; }
.spec-table caption{ caption-side:top; text-align:left; font-family:var(--mono); font-size:0.7rem; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); margin-bottom:var(--s4); }
.spec-table tr{ border-bottom:1px solid var(--border); }
.spec-table tr:last-child{ border-bottom:none; }
.spec-table th{
  text-align:left; font-family:var(--mono); font-size:0.72rem; font-weight:500;
  letter-spacing:0.1em; text-transform:uppercase; color:var(--muted);
  padding:var(--s6) var(--s8); width:36%; vertical-align:top; background:rgba(255,255,255,0.012);
}
.spec-table td{ padding:var(--s6) var(--s8); color:var(--text); font-size:0.98rem; vertical-align:top; }

/* catalog table */
.catalog{ width:100%; border-collapse:collapse; }
.catalog thead th{
  font-family:var(--mono); font-size:0.68rem; letter-spacing:0.12em; text-transform:uppercase;
  color:var(--muted); text-align:left; padding:var(--s4) var(--s6); border-bottom:1px solid var(--border);
}
.catalog tbody td{ padding:var(--s6); border-bottom:1px solid var(--border); color:var(--text-2); font-size:0.96rem; vertical-align:top; }
.catalog tbody tr:hover td{ background:var(--surface); }
.catalog .work{ color:var(--text); font-family:var(--serif); font-size:1.25rem; font-weight:500; }
.catalog .composer{ color:var(--text); font-weight:500; }
.catalog .badge-media{ font-family:var(--mono); font-size:0.64rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--gold-dim); }

/* ---- Ecosystem ---- */
.eco{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--s6); }
.eco-item{ border:1px solid var(--border); border-radius:var(--r-lg); padding:var(--s8); background:var(--surface); }
.eco-item .eco-label{ font-family:var(--mono); font-size:0.66rem; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); margin-bottom:var(--s3); }
.eco-item .eco-name{ font-family:var(--serif); font-size:1.6rem; font-weight:500; margin-bottom:var(--s2); }
.eco-item.lit .eco-name{ color:var(--gold); }
.eco-item p{ font-size:0.9rem; }

/* ---- Forms ---- */
.form{ display:grid; gap:var(--s6); }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:var(--s6); }
.field{ display:flex; flex-direction:column; gap:var(--s2); }
.field label{ font-family:var(--mono); font-size:0.68rem; letter-spacing:0.1em; text-transform:uppercase; color:var(--text-2); }
.field input, .field select, .field textarea{
  font-family:var(--sans); font-size:0.96rem; color:var(--text);
  background:var(--surface); border:1px solid var(--border); border-radius:var(--r-sm);
  padding:0.85rem 1rem; outline:none; transition:border-color .25s var(--ease), box-shadow .25s var(--ease);
  width:100%;
}
.field textarea{ resize:vertical; min-height:120px; }
.field input::placeholder, .field textarea::placeholder{ color:var(--muted); }
.field input:focus, .field select:focus, .field textarea:focus{
  border-color:var(--gold-line); box-shadow:0 0 0 3px var(--gold-wash);
}
.field select{ appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239098A8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 1rem center; padding-right:2.5rem; }

/* inline email signup */
.signup{ display:flex; gap:0; max-width:460px; border:1px solid var(--border); border-radius:var(--r-sm); overflow:hidden; transition:border-color .25s var(--ease), box-shadow .25s var(--ease); }
.signup:focus-within{ border-color:var(--gold-line); box-shadow:0 0 0 3px var(--gold-wash); }
.signup input{ flex:1; border:none; background:var(--surface); padding:0.9rem 1.1rem; color:var(--text); font-family:var(--sans); font-size:0.95rem; outline:none; }
.signup input::placeholder{ color:var(--muted); }
.signup button{ border:none; background:var(--gold); color:#0A0A0A; padding:0.9rem 1.6rem; font-family:var(--sans); font-weight:500; font-size:0.9rem; cursor:pointer; transition:background .25s var(--ease); white-space:nowrap; }
.signup button:hover{ background:#E0BC44; }
.form-note{ font-size:0.82rem; color:var(--muted); margin-top:var(--s3); }
.form-status{ font-family:var(--serif); font-style:italic; font-size:1.25rem; color:var(--gold); display:none; }
.form-status.error{ color:var(--error); font-style:normal; font-family:var(--sans); font-size:0.95rem; }

/* ---- FAQ ---- */
.faq-item{ border-bottom:1px solid var(--border); }
.faq-item summary{ cursor:pointer; list-style:none; padding:var(--s6) 0; display:flex; justify-content:space-between; align-items:center; gap:var(--s6); font-family:var(--serif); font-size:1.3rem; font-weight:500; color:var(--text); }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary .chev{ flex:none; width:18px; height:18px; color:var(--gold); transition:transform .3s var(--ease); }
.faq-item[open] summary .chev{ transform:rotate(45deg); }
.faq-item .faq-body{ padding:0 0 var(--s6); color:var(--text-2); font-size:0.98rem; max-width:64ch; }

/* ---- CTA band ---- */
.cta-band{ text-align:center; padding:var(--s28) 0; }
.cta-band h2{ margin-bottom:var(--s4); }
.cta-band .lead{ margin:0 auto var(--s8); }

/* ---- Footer ---- */
.footer{ flex-shrink:0; border-top:1px solid var(--border); padding:var(--s16) 0 var(--s12); position:relative; z-index:1; margin-top:var(--s8); }
.footer-top{ display:flex; justify-content:space-between; gap:var(--s16); flex-wrap:wrap; margin-bottom:var(--s16); }
.footer-brand{ max-width:280px; }
.footer-brand img{ height:24px; width:auto; margin-bottom:var(--s6); display:block; }
.footer-brand p{ font-size:0.88rem; color:var(--muted); }
.footer-cols{ display:flex; gap:var(--s16); flex-wrap:wrap; }
.footer-col h4{ font-family:var(--mono); font-size:0.66rem; font-weight:500; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); margin-bottom:var(--s4); }
.footer-col a{ display:block; color:var(--text-2); font-size:0.9rem; padding:0.25rem 0; }
.footer-col a:hover{ color:var(--gold); }
.footer-bottom{ display:flex; justify-content:space-between; gap:var(--s4); flex-wrap:wrap; padding-top:var(--s8); border-top:1px solid var(--border-soft); }
.footer-bottom p, .footer-bottom a{ font-size:0.82rem; color:var(--muted); }
.footer-bottom a:hover{ color:var(--gold); }

/* ---- Device illustration (CSS) ---- */
.device{ position:relative; width:100%; max-width:560px; margin:0 auto; }
.device-bar{
  position:relative; width:100%; height:74px; border-radius:14px;
  background:linear-gradient(180deg,#2A3140 0%,#161B27 48%,#0E121C 100%);
  border:1px solid #2E374A; box-shadow:0 30px 70px -30px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.06);
  display:flex; align-items:center; padding:0 22px; gap:18px;
}
.device-bar::before{ /* top sheen */
  content:''; position:absolute; inset:1px 1px auto 1px; height:40%; border-radius:13px 13px 40px 40px;
  background:linear-gradient(180deg,rgba(255,255,255,0.07),transparent);
}
.device-display{ flex:none; width:120px; height:34px; border-radius:6px; background:#06080D; border:1px solid #232C3D; display:flex; align-items:center; padding:0 10px; gap:7px; }
.device-display .d-dot{ width:6px; height:6px; border-radius:50%; background:var(--gold); box-shadow:0 0 8px var(--gold); flex:none; }
.device-display .d-line{ height:2px; border-radius:1px; background:rgba(212,175,55,0.35); }
.device-display .d-line.a{ width:34px; } .device-display .d-line.b{ width:18px; opacity:0.5; }
.device-keys{ display:flex; gap:5px; align-items:center; flex:1; }
.device-keys i{ display:block; flex:1; height:18px; border-radius:2px; background:linear-gradient(180deg,#3A4356,#222A3A); }
.device-keys i:nth-child(3n){ background:linear-gradient(180deg,#10141E,#0A0D15); height:24px; }
.device-knob{ flex:none; width:38px; height:38px; border-radius:50%; background:radial-gradient(circle at 35% 30%,#3C4456,#171C28 70%); border:1px solid #2E374A; box-shadow:inset 0 1px 0 rgba(255,255,255,0.08); position:relative; }
.device-knob::after{ content:''; position:absolute; top:6px; left:50%; transform:translateX(-50%); width:2px; height:9px; border-radius:1px; background:var(--gold); }
.device-shadow{ width:70%; height:24px; margin:18px auto 0; border-radius:50%; background:radial-gradient(ellipse,rgba(0,0,0,0.55),transparent 70%); filter:blur(6px); }
.device-caption{ text-align:center; margin-top:var(--s6); font-family:var(--mono); font-size:0.66rem; letter-spacing:0.16em; text-transform:uppercase; color:var(--muted); }

/* ---- Hero product visual (centered photo that melts into the page) ---- */
.hero-visual{ position:relative; width:100%; max-width:1080px; margin:var(--s16) auto 0; }
.hero-visual img{ width:100%; height:auto; display:block;
  -webkit-mask-image:linear-gradient(to bottom, transparent 0%, #000 7%, #000 90%, transparent 100%);
  mask-image:linear-gradient(to bottom, transparent 0%, #000 7%, #000 90%, transparent 100%);
}
.hero-visual .hero-visual-caption{ text-align:center; margin-top:var(--s6); font-family:var(--mono); font-size:0.66rem; letter-spacing:0.16em; text-transform:uppercase; color:var(--muted); }
@media (max-width:680px){
  .hero-visual{ margin-top:var(--s12); }
}

/* ---- Works list (compact) ---- */
.works{ display:grid; gap:var(--s2); }
.works li{ list-style:none; display:flex; justify-content:space-between; gap:var(--s6); padding:var(--s4) 0; border-bottom:1px solid var(--border); }
.works .w-name{ font-family:var(--serif); font-size:1.2rem; color:var(--text); }
.works .w-comp{ font-family:var(--mono); font-size:0.7rem; letter-spacing:0.1em; text-transform:uppercase; color:var(--muted); align-self:center; }

/* ---- Feature row (image/text split) ---- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:var(--s16); align-items:center; }
.split .panel{ background:var(--surface); border:1px solid var(--border); border-radius:var(--r-lg); aspect-ratio:4/3; display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden; }
.split .panel::after{ content:''; position:absolute; top:0; left:50%; transform:translateX(-50%); width:55%; height:1px; background:linear-gradient(90deg,transparent,var(--gold),transparent); opacity:0.3; }

/* ---- Scroll reveal ----
   Animate transform only; opacity stays 1 so content is NEVER hidden
   even if a browser/iframe fails to advance the transition. */
.reveal{ transform:translateY(20px); transition:transform .75s var(--ease); will-change:transform; }
.reveal.in{ transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ transform:none; transition:none; }
  html{ scroll-behavior:auto; }
  .pill .dot{ animation:none; }
}

/* ---- Focus visibility ---- */
:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; border-radius:2px; }

/* ---- Skip link ---- */
.skip{ position:absolute; left:-9999px; top:0; background:var(--gold); color:#0A0A0A; padding:0.6rem 1rem; border-radius:0 0 var(--r-sm) 0; z-index:100; font-size:0.85rem; }
.skip:focus{ left:0; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:900px){
  .grid-3, .steps, .eco{ grid-template-columns:1fr 1fr; }
  .split{ grid-template-columns:1fr; gap:var(--s8); }
  .footer-top{ gap:var(--s8); }
}

@media (max-width:680px){
  :root{ --s28:80px; --s20:64px; }
  .wrap{ padding:0 var(--s6); }
  .nav-links{
    position:fixed; inset:74px 0 auto 0;
    flex-direction:column; align-items:stretch; gap:0;
    background:rgba(8,10,16,0.97); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--border);
    padding:var(--s4) var(--s6) var(--s8);
    transform:translateY(-12px); opacity:0; pointer-events:none; transition:all .3s var(--ease);
  }
  .nav-links.open{ transform:none; opacity:1; pointer-events:auto; }
  .nav-links a{ padding:0.9rem 0; border-bottom:1px solid var(--border-soft); font-size:1rem; }
  .nav-links a.active::after{ display:none; }
  .nav-cta{ margin:var(--s4) 0 0; }
  .nav-cta.btn{ width:100%; }
  .nav-toggle{ display:flex; }
  .grid-3, .steps, .grid-2, .eco{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .footer-cols{ gap:var(--s8); }
  .hero-actions .btn{ flex:1; min-width:140px; }
  .spec-table th{ width:42%; }
}