/* ===== BASE RESET & LAYOUT ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;background:#F7E6CA;padding:28px 24px;min-height:100vh;color:#1a1414;}
.wrap{max-width:980px;margin:0 auto;}
h1{font-size:32px;font-weight:800;letter-spacing:-.03em;color:#1a1414;line-height:1.1;}
.ep{font-family:monospace;font-size:11px;letter-spacing:.18em;color:#a61118;margin-bottom:6px;text-transform:uppercase;}
.sub{font-size:14px;color:#3a3030;margin-top:6px;}
.step-counter{font-family:monospace;font-size:11px;color:#3a3030;letter-spacing:.05em;}

/* ===== PHASE NAVIGATION ===== */
.phases{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap;}
.phase-btn{padding:5px 12px;border-radius:20px;border:1px solid rgba(26,20,20,.16);background:#fff;color:#3a3030;font-size:11px;cursor:pointer;transition:all .2s;font-family:inherit;}

/* ===== BROWSER SHELL ===== */
.browser{background:#1a1414;border-radius:10px;overflow:hidden;box-shadow:0 20px 60px rgba(26,20,20,.25);}
.chrome{height:36px;display:flex;align-items:center;padding:0 14px;gap:7px;border-bottom:1px solid rgba(247,230,202,.08);}
.dot{width:11px;height:11px;border-radius:50%;}
.chrome-url{margin-left:18px;font-family:monospace;font-size:11px;color:rgba(247,230,202,.5);letter-spacing:.05em;}
.viewport{position:relative;aspect-ratio:16/9;overflow:hidden;background:#FBF8F1;}
.panel{position:absolute;inset:0;opacity:0;pointer-events:none;}
.panel.show{opacity:1;pointer-events:auto;animation:fade-in .4s ease-out;}
.fl{display:flex;flex-direction:column;}

/* ===== CONTROL BAR ===== */
.ctrl{background:#1a1414;padding:18px 20px;}
.caption{font-size:14px;color:#F7E6CA;margin-bottom:14px;line-height:1.55;letter-spacing:-.01em;}
.progress-track{height:3px;background:rgba(247,230,202,.12);border-radius:2px;margin-bottom:14px;overflow:hidden;}
.progress-bar{height:100%;border-radius:2px;transition:width .4s ease,background .4s ease;}
.nav-row{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;}
.dots{display:flex;gap:4px;}
.step-dot{width:22px;height:22px;border:none;border-radius:3px;background:rgba(247,230,202,.15);color:rgba(247,230,202,.7);font-size:9px;font-weight:700;font-family:monospace;cursor:pointer;transition:all .2s;}
.nav-btns{display:flex;gap:6px;align-items:center;}
.btn-ic{background:transparent;border:1px solid rgba(247,230,202,.2);border-radius:4px;color:#F7E6CA;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;}
.btn-ic:disabled{opacity:.3;cursor:not-allowed;}
.btn-auto{background:transparent;border:1px solid rgba(247,230,202,.2);border-radius:4px;color:#F7E6CA;height:32px;padding:0 14px;display:flex;align-items:center;gap:6px;cursor:pointer;font-size:12px;font-weight:500;font-family:monospace;letter-spacing:.05em;}
.btn-auto.on{background:#a61118;border-color:#a61118;}
.btn-next{background:#F7E6CA;border:none;border-radius:4px;color:#1a1414;height:32px;padding:0 16px;display:flex;align-items:center;gap:6px;cursor:pointer;font-size:12px;font-weight:600;font-family:monospace;letter-spacing:.05em;}
.btn-next:disabled{opacity:.4;cursor:not-allowed;}
.footer{margin-top:20px;display:flex;justify-content:space-between;font-size:11px;color:#3a3030;font-family:monospace;flex-wrap:wrap;gap:8px;}

/* ===== HOTSPOT & PULSE ===== */
:root{--hs-shadow:0 2px 8px rgba(0,0,0,.3);}
.hotspot{position:absolute;z-index:9;pointer-events:none;transform:translate(-50%,-50%);}
.pulse{position:absolute;left:50%;top:50%;width:56px;height:56px;border-radius:50%;background:var(--hs-color,#a61118);transform:translate(-50%,-50%);}
.p1{opacity:.15;animation:hs-pulse 1.6s ease-out infinite;}
.p2{opacity:.1;animation:hs-pulse 1.6s ease-out .4s infinite;}
.hs-dot{position:relative;display:block;width:22px;height:22px;border-radius:50%;background:var(--hs-color,#a61118);border:3px solid #F7E6CA;box-shadow:var(--hs-shadow,0 2px 8px rgba(166,17,24,.4));}
.hs-label{position:absolute;top:32px;left:50%;transform:translateX(-50%);background:#1a1414;color:#F7E6CA;padding:5px 10px;border-radius:4px;font-size:11px;font-weight:500;white-space:nowrap;}

/* ===== SHARED FORM COMPONENTS ===== */
.field-lbl{font-size:11px;color:#3a3030;margin-bottom:6px;letter-spacing:.05em;text-transform:uppercase;}
.field{border:1px solid rgba(26,20,20,.16);border-radius:4px;padding:10px 14px;font-size:13px;background:#fff;color:#1a1414;}
.field.focus{border:2px solid #a61118;font-weight:500;}
.field.focus-blue{border:2px solid #2563eb;font-weight:500;}
.cursor{display:inline-block;width:1.5px;height:14px;background:#a61118;margin-left:2px;vertical-align:middle;animation:blink 1s step-end infinite;}
.cursor-blue{background:#2563eb;}

/* ===== CONTRACT DEMO — APP SHELL ===== */
.frame-label{position:absolute;top:14px;left:16px;display:flex;align-items:center;gap:10px;font-family:monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#3a3030;z-index:10;pointer-events:none;}
.frame-dot{width:6px;height:6px;border-radius:50%;background:#a61118;flex-shrink:0;}
.app-bar{height:48px;border-bottom:1px solid rgba(26,20,20,.08);display:flex;align-items:center;padding:0 20px;gap:12px;background:inherit;flex-shrink:0;}
.logo{font-weight:700;color:#a61118;font-size:15px;letter-spacing:-.02em;}
.bc{font-size:12px;color:#3a3030;}

/* ===== CONTRACT DEMO — COMPONENTS ===== */
.upload-zone{width:70%;height:240px;border:2px dashed rgba(26,20,20,.16);border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#FAF1DD;margin:auto;}
.tool-side{border-right:1px solid rgba(26,20,20,.08);padding:18px;background:#FAF1DD;overflow:auto;}
.tool-head{font-size:10px;color:#3a3030;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px;}
.tool-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:4px;font-size:12px;margin-bottom:4px;cursor:grab;border:1px solid transparent;}
.tool-item.on{background:#fff;border-color:#a61118;color:#a61118;font-weight:600;}
.tool-item.off{background:transparent;color:#3a3030;}
.pdf-box{background:#fff;border:1px solid rgba(26,20,20,.16);border-radius:4px;padding:20px 26px;height:100%;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden;}
.pdf-line{height:4px;background:rgba(26,20,20,.08);border-radius:2px;margin-bottom:7px;}
.sign-slot{height:38px;border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:600;letter-spacing:.05em;}
.sign-slot.empty{border:1px dashed rgba(26,20,20,.16);}
.sign-slot.active{border:2px solid #a61118;background:rgba(166,17,24,.06);color:#a61118;}
.ch-card{border-radius:6px;padding:14px 16px;display:flex;align-items:center;gap:10px;}
.ch-card.sel{border:2px solid #a61118;background:#FAF1DD;}
.ch-card.unsel{border:1px solid rgba(26,20,20,.16);background:#fff;}
.review-row{display:flex;justify-content:space-between;padding:10px 14px;background:#fff;border:1px solid rgba(26,20,20,.08);border-radius:4px;font-size:13px;}
.signer-chip{border:1px solid rgba(26,20,20,.08);border-radius:6px;padding:14px 18px;background:#fff;display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.avatar{width:34px;height:34px;border-radius:50%;background:#a61118;display:flex;align-items:center;justify-content:center;color:#F7E6CA;font-size:13px;font-weight:700;flex-shrink:0;}
.badge{font-size:10px;background:rgba(166,17,24,.1);color:#a61118;padding:3px 8px;border-radius:3px;font-weight:600;}
.cert-card{background:#fff;border:1px solid rgba(26,20,20,.08);border-radius:6px;padding:14px 20px;display:flex;align-items:center;gap:14px;min-width:300px;}
.red-btn{background:#a61118;color:#F7E6CA;border:none;border-radius:4px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:7px;cursor:pointer;box-shadow:0 2px 8px rgba(166,17,24,.3);}

/* ===== KEYFRAMES ===== */
@keyframes hs-pulse{0%{transform:translate(-50%,-50%) scale(.6);opacity:.5;}100%{transform:translate(-50%,-50%) scale(2.2);opacity:0;}}
@keyframes blink{50%{opacity:0;}}
@keyframes fade-in{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}

/* ===== RESPONSIVE — COMMON ===== */
@media(max-width:680px){
  body{padding:16px 14px;}
  h1{font-size:22px;}
  .sub{font-size:12px;}
  .phases{gap:4px;}
  .phase-btn{font-size:10px;padding:4px 9px;}
  .chrome{height:30px;padding:0 10px;gap:5px;}
  .dot{width:9px;height:9px;}
  .chrome-url{font-size:9px;max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .viewport{aspect-ratio:4/3;}
  .ctrl{padding:12px 14px;}
  .caption{font-size:12px;margin-bottom:8px;}
  .dots{gap:2px;flex-wrap:wrap;}
  .step-dot{width:16px;height:16px;font-size:8px;}
  .nav-btns{gap:4px;}
  .btn-ic{width:28px;height:28px;}
  .btn-auto{height:28px;font-size:11px;padding:0 10px;}
  .btn-next{height:28px;font-size:11px;padding:0 10px;}
  .footer{font-size:9px;margin-top:14px;}
  /* contract-specific */
  .upload-zone{height:150px!important;width:82%!important;}
  .cert-card{min-width:0!important;width:85%;}
  .panel-fields{grid-template-columns:90px 1fr!important;}
  .tool-side{padding:10px!important;}
  .tool-item{font-size:10px!important;padding:5px 6px!important;gap:6px!important;}
  .pdf-box{padding:12px 14px!important;}
  .grid-2col{grid-template-columns:1fr!important;}
}
@media(max-width:420px){
  body{padding:12px 10px;}
  h1{font-size:18px;}
  .phase-btn{font-size:9px;padding:3px 7px;}
  .caption{font-size:11px;}
  .step-dot{width:14px;height:14px;font-size:7px;}
  .chrome-url{display:none;}
  /* contract-specific */
  .panel-fields{grid-template-columns:70px 1fr!important;}
  .tool-head{font-size:9px!important;}
  .tool-item{font-size:9px!important;padding:4px 5px!important;}
}