*{box-sizing:border-box}
:root{
  --bg:#080a0c;--panel:#11151a;--panel2:#171c22;--line:#29313a;
  --text:#eceff2;--muted:#8f9aa6;--accent:#d7b56d;--danger:#c96d6d
}
html,body{margin:0;min-height:100%;max-width:100%;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;overflow-x:hidden}
body{min-height:100vh}
img,svg,video{max-width:100%}
a,button,input{font:inherit}
button,a,input{touch-action:manipulation}
.login-screen{display:grid;place-items:center;min-height:100dvh;padding:18px;background:radial-gradient(circle at 50% 20%,rgba(255,255,255,.04),transparent 36%),linear-gradient(180deg,#0c0f13,#060708)}
.login-card{width:min(520px,100%);border:1px solid var(--line);background:rgba(17,21,26,.95);padding:48px;box-shadow:0 28px 90px rgba(0,0,0,.55)}
.brand{font-size:32px;letter-spacing:.24em;font-weight:800;margin-bottom:38px;overflow-wrap:anywhere}.brand-small{font-size:16px;margin:0}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:700;margin-bottom:12px}
label{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
input{width:100%;min-width:0;padding:17px 18px;border:1px solid #3a444f;background:#090b0e;color:white;font-size:18px;letter-spacing:.12em;outline:none;border-radius:0}
input:focus{border-color:var(--accent)}
button{width:100%;margin-top:16px;padding:16px;border:0;background:var(--accent);color:#111;font-weight:800;letter-spacing:.12em;cursor:pointer;min-height:48px}
button:disabled{opacity:.38;cursor:not-allowed}
.secondary-button{background:#20272e;color:#e9edf0;border:1px solid #4b5660}
.error{margin-top:12px;color:#ffb0b0;font-size:13px}.footer-note{margin-top:26px;color:#626d77;font-size:12px}
.topbar{min-height:68px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 30px;background:#0d1014;position:sticky;top:0;z-index:20}
.case-ref{font-size:12px;letter-spacing:.14em;color:#7f8b96;text-align:right;overflow-wrap:anywhere}.back-link{color:#cbd1d6;text-decoration:none;font-size:13px;white-space:nowrap}
.case-shell{width:min(1120px,calc(100% - 36px));margin:42px auto}.case-shell.narrow{width:min(850px,calc(100% - 36px))}.case-shell.wide{width:min(1280px,calc(100% - 36px))}
.intro-panel,.document-panel{border:1px solid var(--line);background:var(--panel);padding:34px;margin-bottom:28px;overflow:hidden}
h1{font-size:clamp(26px,3vw,30px);margin:0 0 18px;font-weight:700;overflow-wrap:anywhere}h2{margin:8px 0 10px;overflow-wrap:anywhere}
p{line-height:1.65;color:#d2d7dc;max-width:100%;overflow-wrap:anywhere}.muted{color:var(--muted)}.small{font-size:13px}
.desk-title,.section-caption{font-size:11px;letter-spacing:.16em;color:#7f8b96;margin:0 0 14px}
.evidence-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(250px,100%),1fr));gap:14px}
.evidence-card{display:flex;align-items:center;gap:18px;border:1px solid var(--line);background:var(--panel2);padding:22px;color:var(--text);text-decoration:none;transition:.16s transform,.16s border-color;min-width:0}
.evidence-card:hover{transform:translateY(-2px);border-color:#596674}.evidence-icon{font-size:30px;color:var(--accent);flex:0 0 auto}
.evidence-name{font-size:18px;font-weight:700;letter-spacing:.08em;overflow-wrap:anywhere}.evidence-status{font-size:12px;color:#7f8b96;margin-top:6px}
.notice{border-left:3px solid var(--accent);background:#0d1115;padding:18px 20px;margin:24px 0;color:#d9dde1;line-height:1.55;overflow-wrap:anywhere}
.placeholder{margin-top:30px;border:1px dashed #45505b;background:#0c0f13;padding:34px;min-height:220px;display:flex;flex-direction:column;justify-content:center}
.placeholder-label{font-size:11px;letter-spacing:.16em;color:#6f7a85}
.investigation-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,320px);gap:24px;align-items:start;margin-top:28px}
.plan-wrap{border:1px solid var(--line);background:#0a0d10;padding:12px;overflow:auto;-webkit-overflow-scrolling:touch;max-width:100%;overscroll-behavior-inline:contain}
.floorplan{width:100%;min-width:720px;height:auto;display:block}
.outer-wall{fill:none;stroke:#d9dde1;stroke-width:12}.room{fill:#121820;stroke:#66717d;stroke-width:3}
.room-label{fill:#aab3bc;font-size:17px;font-weight:700;letter-spacing:1px}
.reference-axis{stroke:#7a8792;stroke-width:2;stroke-dasharray:8 7}.axis-label{fill:#c7ced5;font-size:14px;font-weight:800}
.measure-line{stroke:#d7b56d;stroke-width:2}.measure-line.secondary{stroke:#8ea2b4}.measure-text{fill:#d7b56d;font-size:15px;font-weight:700}.measure-text.secondary{fill:#a9bac9}
.plan-hint{fill:#77828d;font-size:14px}
.click-zone{fill:transparent;stroke:transparent;stroke-width:5;cursor:default}
.plan-enabled .click-zone{cursor:crosshair;pointer-events:auto}
.plan-enabled .click-zone.selected{fill:rgba(215,181,109,.12);stroke:#d7b56d}
.measure-card{border:1px solid var(--line);background:#0d1115;padding:22px;min-width:0}
.measurement{display:flex;justify-content:space-between;gap:18px;padding:12px 0;border-bottom:1px solid #222a31;font-size:13px;color:#aeb6bf}
.measurement span{min-width:0}.measurement strong{color:#f0f2f4;white-space:nowrap}
.calc-task{margin-top:20px}.calc-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:center}.calc-row input{letter-spacing:0;font-size:16px;padding:12px}.calc-row span{color:#aeb6bf}
.zone-task{display:none;margin-top:26px;padding-top:22px;border-top:1px solid #273039}.zone-task.visible{display:block}
.selected-zone{padding:12px;background:#090c0f;border:1px solid #303943;color:#c8ced4;font-size:13px;overflow-wrap:anywhere}
.result-panel{display:none;margin-top:26px;border:1px solid #3d4b3f;background:#0c1510;padding:24px}.result-panel.visible{display:block}
.action-link{display:inline-flex;align-items:center;justify-content:center;margin-top:12px;padding:13px 16px;border:1px solid var(--accent);color:var(--accent);text-decoration:none;font-weight:800;font-size:12px;letter-spacing:.08em;min-height:46px;text-align:center}
.feedback{display:none;margin-top:12px;padding:12px 15px;font-size:13px;border-left:3px solid #56616c;background:#0b0e11}.feedback.visible{display:block}
.feedback.error{border-left-color:var(--danger);color:#e3a4a4}.feedback.success{border-left-color:#7da583;color:#b7d1bb}.feedback.neutral{color:#9da7b1}
.timeline-mini{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:24px 0}.timeline-mini div{border:1px solid var(--line);padding:16px;background:#0c1014;min-width:0}
.timeline-mini strong{display:block;color:var(--accent);margin-bottom:5px}.timeline-mini span{font-size:12px;color:#9aa4ad;overflow-wrap:anywhere}
.photo-placeholder{border:1px solid var(--line);background:#090b0d;padding:20px;margin:24px 0}.dark-hole{height:320px;margin:14px 0;background:radial-gradient(ellipse at 50% 50%,#1b1c1d 0,#0b0c0d 36%,#030404 68%,#000 100%);border:14px solid #303033;box-shadow:inset 0 0 70px #000}

@media(max-width:960px){
  .investigation-layout{grid-template-columns:1fr}
  .measure-card{order:-1}
  .floorplan{min-width:680px}
}
@media(max-width:768px){
  .topbar{min-height:60px;padding:10px 16px;align-items:flex-start}
  .case-ref{font-size:10px;letter-spacing:.09em;max-width:55%}
  .case-shell,.case-shell.narrow,.case-shell.wide{width:min(100% - 24px,100%);margin:18px auto}
  .intro-panel,.document-panel{padding:22px}
  .notice{padding:15px 16px;margin:18px 0}
  .evidence-card{padding:18px}
  .timeline-mini{grid-template-columns:1fr}
  .photo-placeholder{padding:14px}
  .dark-hole{height:240px;border-width:9px}
}
@media(max-width:540px){
  .login-screen{place-items:start center;padding:14px;padding-top:max(14px,env(safe-area-inset-top))}
  .login-card{padding:28px 20px;margin-top:7vh}
  .brand{font-size:22px;letter-spacing:.17em;margin-bottom:30px}
  .brand-small{font-size:13px;letter-spacing:.14em}
  .topbar{position:sticky;top:0}
  .case-ref{max-width:58%;line-height:1.35}
  .back-link{font-size:12px}
  .case-shell,.case-shell.narrow,.case-shell.wide{width:calc(100% - 16px);margin:10px auto 22px}
  .intro-panel,.document-panel{padding:18px}
  h1{font-size:25px}
  h2{font-size:20px}
  p{font-size:14px;line-height:1.58}
  .notice{font-size:14px}
  .measure-card{padding:16px}
  .measurement{gap:10px;font-size:12px}
  .measurement strong{font-size:12px}
  .floorplan{min-width:650px}
  .plan-wrap{padding:8px}
  .plan-wrap::before{
    content:"Deslice horizontalmente para revisar el plano completo";
    display:block;color:#7f8b96;font-size:11px;letter-spacing:.04em;margin-bottom:8px
  }
  button,.action-link{min-height:50px}
  .action-link{width:100%}
}
@media(pointer:coarse){
  .plan-enabled .click-zone{stroke-width:8}
  .evidence-card:hover{transform:none}
}

/* V0.13.9 — guía previa de herramientas */
.prestart-guide{margin:22px 0;padding:20px;border:1px solid rgba(202,164,88,.55);background:rgba(8,9,7,.88)}
.prestart-guide h2{margin:0 0 12px;color:#eadfc8}
.prestart-guide p{line-height:1.55}
.prestart-tools{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}
.prestart-tools>div{padding:14px;border:1px solid rgba(202,164,88,.35);background:#10110f}
.prestart-tools strong{display:block;color:#d7b365;letter-spacing:.1em;margin-bottom:7px}
.prestart-tools span{display:block;line-height:1.45;color:#c9ccca}
.prestart-mobile{margin-bottom:0}
@media(max-width:759px){.prestart-tools{grid-template-columns:1fr}.prestart-guide{padding:16px}}