:root{
  --bg:#f6f5f1; --surface:#ffffff; --surface-2:#faf9f6; --line:#e7e4dc; --line-2:#d9d5cb;
  --ink:#121a17; --ink-2:#3d4742; --muted:#6f7872;
  --brand:#0f2a20; --brand-2:#1d4d3a; --accent:#2f7a57; --accent-soft:#e6f2ec;
  --amber:#9a6412; --amber-soft:#fbf1e1; --gray-soft:#efeee9; --danger:#b3261e; --danger-soft:#fbeceb;
  --r-lg:18px; --r-md:12px; --r-sm:8px;
  --shadow:0 1px 2px rgba(18,26,23,.04),0 8px 24px -12px rgba(18,26,23,.12);
  --font:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Instrument Serif",Georgia,serif;
  --mono:"Geist Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:15px/1.55 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--brand-2)}
button{font:inherit}
.app{min-height:100vh;display:flex;flex-direction:column}

/* top bar */
.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px clamp(16px,4vw,40px);background:rgba(246,245,241,.85);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.logo{width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.brand-txt{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sep{color:var(--line-2);margin:0 4px}
@media (max-width:600px){.sep,.brand-sub{display:none}}
.top-progress{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;white-space:nowrap}
.ring{width:26px;height:26px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:4}
.ring-bg{stroke:var(--line)}
.ring-fg{stroke:var(--accent);stroke-linecap:round;stroke-dasharray:97.4;stroke-dashoffset:97.4;transition:stroke-dashoffset .6s ease}

/* hero */
.hero{padding:36px clamp(16px,4vw,40px) 8px;max-width:1240px;width:100%;margin:0 auto}
.eyebrow{margin:0 0 6px;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.hero h1{margin:0;font-family:var(--serif);font-weight:400;font-size:clamp(34px,5vw,52px);line-height:1.05;letter-spacing:-.01em}
.lead{max-width:640px;margin:10px 0 0;color:var(--ink-2)}

/* layout */
.layout{flex:1;display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;align-items:start;
  padding:24px clamp(16px,4vw,40px) 100px;max-width:1240px;width:100%;margin:0 auto}
@media (max-width:900px){.layout{grid-template-columns:1fr}}

/* rail */
.rail{position:sticky;top:72px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
@media (max-width:900px){.rail{position:static}}
.rail-head{padding:14px 14px 10px;border-bottom:1px solid var(--line);display:grid;gap:10px}
.rail-head>span{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.filters{display:flex;gap:4px;background:var(--gray-soft);padding:3px;border-radius:10px}
.filters button{flex:1;border:0;background:transparent;padding:6px 8px;border-radius:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.filters button[aria-selected="true"]{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.06)}
.rail-list{list-style:none;margin:0;padding:6px;max-height:calc(100vh - 220px);overflow:auto}
.rail-scroll{position:relative}
.arrow{display:none}
@media (max-width:900px){
  .rail-list{max-height:none;display:flex;gap:6px;overflow-x:auto;padding:8px;scroll-snap-type:x proximity;scrollbar-width:none}
  .rail-list::-webkit-scrollbar{display:none}
  .rail-list li{flex:none;width:210px;scroll-snap-align:start}
  .rail-scroll.scrollable .rail-list{padding-inline:48px;scroll-padding-inline:48px;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 52px,#000 calc(100% - 52px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 52px,#000 calc(100% - 52px),transparent 100%)}
  .rail-scroll.scrollable .arrow{display:grid}
  .arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;place-items:center;width:34px;height:34px;border-radius:50%;
    border:1px solid var(--line-2);background:var(--surface);color:var(--brand);box-shadow:0 2px 8px rgba(18,26,23,.12);cursor:pointer;transition:opacity .2s}
  .arrow.prev{left:8px}.arrow.next{right:8px}
  .arrow:disabled{opacity:.3;cursor:default}
  .arrow:not(:disabled):hover{background:var(--accent-soft)}
  .arrow.next:not(:disabled){animation:nudge 1.6s ease-in-out 3}
}
@keyframes nudge{0%,100%{transform:translateY(-50%)}50%{transform:translate(4px,-50%)}}
.item{width:100%;display:grid;grid-template-columns:32px 1fr auto;gap:10px;align-items:center;text-align:left;border:0;background:transparent;
  padding:10px;border-radius:10px;cursor:pointer;color:inherit}
.item:hover{background:var(--surface-2)}
.item[aria-current="true"]{background:var(--accent-soft)}
.item:focus-visible,.btn:focus-visible,.filters button:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.item .n{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font:600 13px var(--mono);background:var(--gray-soft);color:var(--ink-2)}
.item[aria-current="true"] .n{background:var(--brand);color:#fff}
.item .t{min-width:0}
.item .t b{display:block;font-size:14px;font-weight:600}
.item .t small{display:block;font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:9px;height:9px;border-radius:50%}
.dot.pendiente{background:var(--line-2)}
.dot.editado{background:#d99a2b}
.dot.aprobado{background:var(--accent)}

/* panel */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden;min-width:0}
.p-head{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:flex-start;justify-content:space-between;padding:24px 28px 18px;border-bottom:1px solid var(--line)}
.p-head .kicker{font:500 12px var(--mono);color:var(--muted);letter-spacing:.04em}
.p-head h2{margin:4px 0 0;font-size:22px;line-height:1.25;font-weight:600;letter-spacing:-.01em;text-wrap:balance}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:5px 10px;border-radius:999px;white-space:nowrap}
.badge.pendiente{background:var(--gray-soft);color:var(--ink-2)}
.badge.editado{background:var(--amber-soft);color:var(--amber)}
.badge.aprobado{background:var(--accent-soft);color:var(--accent)}
.p-body{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;padding:24px 28px}
@media (max-width:1100px){.p-body{grid-template-columns:1fr}}
@media (max-width:600px){.p-head,.p-body{padding-inline:18px}}

.fields{display:grid;gap:18px;align-content:start}
.field{display:grid;gap:6px}
.f-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.f-top label{font-size:13px;font-weight:600;color:var(--ink)}
.count{font:500 11.5px var(--mono);color:var(--muted);font-variant-numeric:tabular-nums}
.count.warn{color:var(--amber)}
.count.over{color:var(--danger)}
textarea{width:100%;font:15px/1.5 var(--font);color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-md);
  padding:11px 13px;resize:none;overflow:hidden;min-height:46px;transition:border-color .15s,background .15s,box-shadow .15s}
textarea:hover{border-color:var(--line-2)}
textarea:focus{outline:none;background:#fff;border-color:var(--accent);box-shadow:0 0 0 4px rgba(47,122,87,.12)}
textarea.over{border-color:var(--danger);background:var(--danger-soft)}
textarea[readonly]{background:transparent;border-color:transparent;padding:2px 0 0;min-height:0}
.field.ro{gap:4px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.field.ro:last-child{border-bottom:0}
.field.ro .lbl{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.field.ro .f-top{display:block;line-height:1.3}
.field.ro p{margin:0;white-space:pre-line;color:var(--ink)}
.comment textarea{min-height:84px}

.aside{display:grid;gap:16px;align-content:start}
.card{border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px;background:var(--surface-2)}
.card h3{margin:0 0 8px;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.card p{margin:0;font-size:14px;color:var(--ink-2)}
.card.note{background:var(--amber-soft);border-color:#f1dfbf}
.card.note h3{color:var(--amber)}
.card ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.card li a{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;text-decoration:none;color:var(--brand-2);line-height:1.4}
.card li a:hover{text-decoration:underline}
.card li svg{flex:none;margin-top:3px}
.preview{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--gray-soft)}
.preview img{display:block;width:100%;height:auto}

.p-foot{position:sticky;bottom:0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end;padding:14px 28px;
  border-top:1px solid var(--line);background:rgba(255,255,255,.92);backdrop-filter:blur(8px)}
.p-foot{padding-right:200px}
.p-foot .msg{flex:1;min-width:160px;font-size:13.5px;color:var(--muted)}
@media (max-width:600px){.p-foot{padding:12px 170px 12px 18px;justify-content:flex-start}.p-foot .msg{display:none}}
.fab{position:fixed;right:clamp(16px,3vw,32px);bottom:clamp(16px,3vw,28px);z-index:15;display:inline-flex;align-items:center;gap:10px;
  height:56px;padding:0 24px 0 20px;border:0;border-radius:999px;background:var(--brand);color:#fff;font:600 16px var(--font);cursor:pointer;
  box-shadow:0 10px 28px -6px rgba(15,42,32,.55),0 2px 6px rgba(15,42,32,.25);transition:background .2s,transform .15s,box-shadow .2s}
.fab:hover:not(:disabled){background:var(--brand-2);transform:translateY(-2px);box-shadow:0 14px 32px -6px rgba(15,42,32,.6),0 2px 6px rgba(15,42,32,.25)}
.fab:active{transform:translateY(0)}
.fab:disabled{opacity:.6;cursor:default}
.fab:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.fab.confirm{background:var(--accent);animation:pop .3s ease}
@keyframes pop{50%{transform:scale(1.06)}}
@media (max-width:600px){.fab{height:52px;padding:0 20px 0 16px;font-size:15px}}
.p-foot .msg.err{color:var(--danger)}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;padding:10px 16px;font-weight:600;font-size:14px;cursor:pointer;border:1px solid transparent;transition:background .15s,transform .05s}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.55;cursor:default}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover:not(:disabled){background:var(--brand-2)}
.btn.primary.confirm{background:var(--accent)}
.btn.ghost{background:var(--surface);border-color:var(--line-2);color:var(--ink)}
.btn.ghost:hover:not(:disabled){background:var(--surface-2)}

.approved{display:flex;gap:12px;align-items:center;margin:0 28px 24px;padding:14px 16px;border-radius:var(--r-md);background:var(--accent-soft);color:var(--brand-2);font-size:14px}
.approved svg{flex:none}

.empty{padding:48px 28px;text-align:center;color:var(--muted)}
.empty h2{font-family:var(--serif);font-weight:400;font-size:32px;color:var(--ink);margin:0 0 6px}

/* states */
.state{flex:1;display:grid;place-items:center;align-content:center;gap:14px;padding:80px 20px;color:var(--muted);text-align:center}
.state[hidden]{display:none}
.spinner{width:28px;height:28px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite}
.state.error .spinner{display:none}
.state.error p{max-width:420px;color:var(--ink-2)}
@keyframes spin{to{transform:rotate(360deg)}}

.foot{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;padding:20px clamp(16px,4vw,40px) 28px;max-width:1240px;width:100%;margin:0 auto;font-size:13px;color:var(--muted)}

.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.2);z-index:20}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}