:root{
    --ink:#0B1E2D;
    --ink-2:#122A3D;
    --aqua:#2E9C9C;
    --aqua-bright:#4FC7C0;
    --brass:#C08A3E;
    --paper:#F2F5F3;
    --slate:#8FA3B0;
    --slate-dim:#5A7184;
    --line: rgba(242,245,243,0.12);
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--ink);
    color:var(--paper);
    font-family:'IBM Plex Sans', sans-serif;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.display{
    font-family:'Space Grotesk', sans-serif;
    font-weight:700;
    letter-spacing:-0.01em;
  }
  .mono{ font-family:'IBM Plex Mono', monospace; }
  a{ color:inherit; }
  .wrap{ max-width:1120px; margin:0 auto; padding:0 24px; }

  /* ===== NAV ===== */
  nav{
    position:sticky; top:0; z-index:50;
    background:rgba(11,30,45,0.88);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:64px; }
  .logo{ display:flex; align-items:center; gap:10px; font-family:'Space Grotesk'; font-weight:700; font-size:18px; }
  .logo-dial{ width:22px; height:22px; border-radius:50%; border:2px solid var(--aqua-bright); position:relative; flex-shrink:0; }
  .logo-dial::after{ content:''; position:absolute; top:2px; left:50%; width:2px; height:7px; background:var(--brass); transform-origin:bottom center; transform:translateX(-50%) rotate(35deg); }
  nav ul{ display:flex; gap:32px; list-style:none; font-size:14px; color:var(--slate); }
  nav ul a:hover{ color:var(--paper); }
  .nav-cta{ background:var(--aqua); color:var(--ink); padding:9px 18px; border-radius:6px; font-size:14px; font-weight:600; text-decoration:none; }
  @media(max-width:720px){ nav ul{ display:none; } }

  /* ===== HERO ===== */
  header.hero{ padding:96px 0 64px; border-bottom:1px solid var(--line); position:relative; overflow:hidden; }
  .eyebrow{ font-family:'IBM Plex Mono'; font-size:12px; letter-spacing:0.14em; text-transform:uppercase; color:var(--aqua-bright); margin-bottom:18px; }
  .hero h1{ font-size:clamp(34px, 5.4vw, 58px); line-height:1.05; max-width:820px; }
  .hero h1 em{ font-style:normal; color:var(--aqua-bright); }
  .hero p.lede{ margin-top:22px; font-size:18px; color:var(--slate); max-width:560px; }
  .hero-proof{ margin-top:28px; display:flex; gap:10px; align-items:baseline; font-family:'IBM Plex Mono'; }
  .hero-proof .big{ font-size:15px; color:var(--brass); font-weight:600; }
  .hero-actions{ margin-top:34px; display:flex; gap:14px; flex-wrap:wrap; }
  .btn{ display:inline-block; padding:13px 24px; border-radius:6px; font-size:15px; font-weight:600; text-decoration:none; cursor:pointer; border:1px solid transparent; }
  .btn-primary{ background:var(--aqua); color:var(--ink); }
  .btn-primary:hover{ background:var(--aqua-bright); }
  .btn-ghost{ border-color:var(--line); color:var(--paper); }
  .btn-ghost:hover{ border-color:var(--slate); }

  /* ===== METER / CALCULATOR (signature element) ===== */
  #tool{ padding:72px 0 96px; }
  .tool-grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
  @media(max-width:880px){ .tool-grid{ grid-template-columns:1fr; } }

  .panel{ background:var(--ink-2); border:1px solid var(--line); border-radius:14px; padding:32px; }
  .panel h3{ font-size:13px; text-transform:uppercase; letter-spacing:0.1em; color:var(--slate); margin-bottom:22px; font-family:'IBM Plex Mono'; font-weight:600; }

  .field{ margin-bottom:20px; }
  .field label{ display:block; font-size:13px; color:var(--slate); margin-bottom:7px; }
  .field .hint{ font-size:12px; color:var(--slate-dim); margin-top:5px; }
  .field input, .field select{
    width:100%; background:var(--ink); border:1px solid var(--line); color:var(--paper);
    padding:11px 13px; border-radius:7px; font-size:15px; font-family:'IBM Plex Mono';
  }
  .field input:focus, .field select:focus{ outline:none; border-color:var(--aqua-bright); }
  .row2{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }

  /* ===== FIELD FILL STATE: empty/example (gray) vs manual (normal) vs
     AI-filled (brass/amber, until the user edits it themselves) ===== */
  .field input::placeholder{ color:var(--slate-dim); }
  .field select.field-empty{ color:var(--slate-dim); }
  .field select.field-empty option{ color:var(--paper); } /* dropdown list itself stays readable */
  .field input.field-ai, .field select.field-ai{ color:var(--brass); }

  .btn-calc{ width:100%; margin-top:6px; background:var(--brass); color:var(--ink); border:none; padding:14px; border-radius:7px; font-weight:700; font-size:15px; cursor:pointer; font-family:'Space Grotesk'; }
  .btn-calc:hover{ filter:brightness(1.08); }

  /* the meter readout */
  .meter{ background:radial-gradient(circle at 30% 20%, var(--ink-2), var(--ink) 70%); border:1px solid var(--line); border-radius:14px; padding:32px; position:relative; overflow:hidden; }
  .meter::before{ content:''; position:absolute; inset:0; background:
      repeating-linear-gradient(90deg, transparent, transparent 38px, rgba(79,199,192,0.035) 39px);
    pointer-events:none; }
  .meter h3{ font-size:13px; text-transform:uppercase; letter-spacing:0.1em; color:var(--slate); margin-bottom:6px; font-family:'IBM Plex Mono'; font-weight:600; }
  .meter .sub{ font-size:12px; color:var(--slate-dim); margin-bottom:28px; }
  .readout{ text-align:center; padding:20px 0 8px; }
  .readout .figure{ font-family:'IBM Plex Mono'; font-size:56px; font-weight:600; color:var(--aqua-bright); letter-spacing:-0.02em; transition:opacity .2s; }
  .readout .figure span.dim{ color:var(--slate-dim); font-size:28px; }
  .readout .caption{ font-size:13px; color:var(--slate); margin-top:6px; }
  .schedule-strip{ display:flex; gap:2px; margin-top:26px; border-radius:6px; overflow:hidden; height:26px; }
  .schedule-strip div{ flex:1; }
  .strip-legend{ display:flex; justify-content:space-between; font-size:11px; color:var(--slate-dim); margin-top:8px; font-family:'IBM Plex Mono'; }
  .strip-legend .dot{ display:inline-block; width:8px; height:8px; border-radius:2px; margin-right:5px; vertical-align:middle; }

  .upsell{ margin-top:26px; border-top:1px dashed var(--line); padding-top:22px; }
  .upsell p{ font-size:13px; color:var(--slate); margin-bottom:12px; }
  .upsell .btn{ font-size:13px; padding:10px 16px; }

  /* ===== PRICING ===== */
  #pricing{ padding:96px 0; border-top:1px solid var(--line); }
  .section-head{ text-align:center; max-width:600px; margin:0 auto 56px; }
  .section-head h2{ font-size:clamp(28px,3.6vw,38px); }
  .section-head p{ color:var(--slate); margin-top:14px; font-size:16px; }
  .plans{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
  @media(max-width:880px){ .plans{ grid-template-columns:1fr; } }
  .plan{ border:1px solid var(--line); border-radius:14px; padding:30px; background:var(--ink-2); display:flex; flex-direction:column; }
  .plan.featured{ border-color:var(--aqua); position:relative; }
  .plan.featured::before{ content:'MOST COMMON'; position:absolute; top:-11px; left:24px; background:var(--aqua); color:var(--ink); font-size:10px; font-weight:700; letter-spacing:0.08em; padding:4px 10px; border-radius:4px; font-family:'IBM Plex Mono'; }
  .plan h3{ font-size:19px; margin-bottom:6px; }
  .plan .price{ font-family:'IBM Plex Mono'; font-size:34px; margin:14px 0 4px; color:var(--aqua-bright); }
  .plan .price span{ font-size:14px; color:var(--slate); }
  .plan .desc{ font-size:13px; color:var(--slate); margin-bottom:22px; }
  .plan ul{ list-style:none; margin-bottom:26px; flex-grow:1; }
  .plan li{ font-size:14px; padding:8px 0; border-top:1px solid var(--line); color:var(--paper); }
  .plan li:first-child{ border-top:none; }
  .plan li.no{ color:var(--slate-dim); }
  .plan .btn{ width:100%; text-align:center; }

  .product-card{ background:var(--ink-2); border:1px solid var(--line); border-radius:12px; padding:20px; display:flex; flex-direction:column; gap:10px; }
  .product-card .why{ font-size:11px; text-transform:uppercase; letter-spacing:0.08em; color:var(--brass); font-family:'IBM Plex Mono'; }
  .product-card h4{ font-size:16px; }
  .product-card .price{ font-family:'IBM Plex Mono'; color:var(--aqua-bright); font-size:18px; }
  .product-card .sub-toggle{ display:flex; align-items:center; gap:8px; font-size:12px; color:var(--slate); margin-top:4px; }
  .product-card .actions{ display:flex; gap:8px; margin-top:6px; }
  .product-card .actions .btn{ flex:1; text-align:center; font-size:12px; padding:9px 10px; }
  .cadence-note{ font-size:11px; color:var(--slate-dim); }

  .msg{ max-width:85%; padding:11px 15px; border-radius:12px; font-size:14px; line-height:1.5; }
  .msg.assistant{ background:var(--ink); border:1px solid var(--line); align-self:flex-start; }
  .msg.user{ background:var(--aqua); color:var(--ink); align-self:flex-end; }
  .msg.filled{ font-size:12px; color:var(--brass); font-family:'IBM Plex Mono'; align-self:flex-start; }

  .field input.ai-flash, .field select.ai-flash{ animation: aiFlash 1.8s ease-out; }
  @keyframes aiFlash{
    0%{ border-color: var(--brass); box-shadow: 0 0 0 3px rgba(192,138,62,0.25); }
    100%{ border-color: var(--line); box-shadow: none; }
  }

  /* ===== HOW ===== */
  #how{ padding:96px 0; border-top:1px solid var(--line); }
  .steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
  @media(max-width:880px){ .steps{ grid-template-columns:1fr 1fr; } }
  .step .num{ font-family:'IBM Plex Mono'; color:var(--brass); font-size:13px; margin-bottom:12px; }
  .step h4{ font-size:16px; margin-bottom:8px; }
  .step p{ font-size:13px; color:var(--slate); }

  footer{ border-top:1px solid var(--line); padding:40px 0; }
  footer .wrap{ display:flex; justify-content:space-between; align-items:center; font-size:13px; color:var(--slate-dim); flex-wrap:wrap; gap:12px; }

  ::selection{ background:var(--aqua); color:var(--ink); }

/* ===== APP SHELL (app.html / admin.html) ===== */
.app-header{ position:sticky; top:0; z-index:50; background:rgba(11,30,45,0.92); backdrop-filter:blur(10px); border-bottom:1px solid var(--line); }
.app-header .bar{ display:flex; align-items:center; justify-content:space-between; height:58px; gap:16px; }
.head-readout{ display:flex; align-items:center; gap:10px; font-family:'IBM Plex Mono'; font-size:13px; color:var(--aqua-bright); white-space:nowrap; }
.head-readout .sep{ color:var(--slate-dim); }
.head-readout .lbl{ color:var(--slate-dim); font-size:11px; }
.app-tabs{ display:flex; gap:2px; overflow-x:auto; scrollbar-width:none; }
.app-tabs::-webkit-scrollbar{ display:none; }
.tab-btn{ background:none; border:none; border-bottom:2px solid transparent; color:var(--slate); font-family:'Space Grotesk'; font-size:14px; font-weight:500; padding:10px 16px; cursor:pointer; white-space:nowrap; }
.tab-btn:hover{ color:var(--paper); }
.tab-btn.active{ color:var(--aqua-bright); border-bottom-color:var(--aqua-bright); }
.tab-panel{ display:none; }
.tab-panel.active{ display:block; }
@media(max-width:720px){ .head-readout{ display:none; } }