/* upfront — shared design layer. Monochrome, hairline borders, restrained motion. */
:root{
  --bg:#FAFAFA; --panel:#FFFFFF; --ink:#0B0B0C; --ink2:#3A3A3E; --muted:#6B6B70; --faint:#8A8A8E;
  --line:#E7E7E7; --line2:#D9D9DB; --soft:#F2F2F3;
  --accent:#0B0B0C; --accent-ink:#0B0B0C; --accent-soft:#F2F2F3;
  --ok:#1F6B3A; --ok-bg:#EEF5F0; --warn:#8A5A00; --warn-bg:#FBF4E2; --err:#A12B2B; --err-bg:#FCEEEE;
  --radius:14px; --ease:cubic-bezier(.16,1,.3,1);
  --font:'Geist','Inter','SF Pro Display','Segoe UI',system-ui,sans-serif; --mono:'Geist Mono',ui-monospace,'SF Mono',Menlo,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:15px/1.6 var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
::selection{background:#0B0B0C;color:#fff}

/* ---- motion primitives ---- */
@keyframes uf-up{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes uf-fade{from{opacity:0}to{opacity:1}}
@keyframes uf-draw{to{stroke-dashoffset:0}}
@keyframes uf-shimmer{to{background-position:-200% 0}}
.uf-in{animation:uf-up .6s var(--ease) both}
.uf-rv{opacity:0;transform:translateY(12px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.uf-rv.on{opacity:1;transform:none}
.uf-skel{background:linear-gradient(90deg,#EFEFF0 25%,#F7F7F8 37%,#EFEFF0 63%);background-size:200% 100%;animation:uf-shimmer 1.4s linear infinite;border-radius:8px;color:transparent}

/* ---- layout ---- */
.uf-top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;height:64px;padding:0 24px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(1.5) blur(16px);backdrop-filter:saturate(1.5) blur(16px);border-bottom:1px solid var(--line)}
.uf-top img.logo{height:22px;display:block}
.uf-top .who{margin-left:auto;text-align:right;font-size:12.5px;line-height:1.35;color:var(--muted)}
.uf-top .who b{display:block;color:var(--ink);font-weight:600;font-size:13px}
.uf-wrap{max-width:980px;margin:0 auto;padding:40px 24px 96px}
.uf-h1{font-size:clamp(28px,4vw,40px);letter-spacing:-.035em;line-height:1.08;margin:0 0 10px;font-weight:650}
.uf-sub{color:var(--muted);margin:0 0 28px;max-width:56ch}
.uf-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease)}
.uf-card.hov:hover{border-color:var(--line2);box-shadow:0 10px 30px -14px rgba(11,11,12,.18);transform:translateY(-2px)}
.uf-grid{display:grid;gap:16px}
.uf-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.uf-sp{flex:1}
.uf-eyebrow{font:600 11px/1 var(--font);letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:0 0 10px}
.uf-mono{font-family:var(--mono);font-size:.92em;letter-spacing:.02em}

/* ---- controls ---- */
.uf-btn{appearance:none;border:1px solid var(--line2);background:#fff;color:var(--ink);padding:11px 18px;border-radius:10px;font:600 13.5px/1 var(--font);cursor:pointer;white-space:nowrap;text-decoration:none;display:inline-flex;align-items:center;gap:8px;position:relative;overflow:hidden;transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease)}
.uf-btn:hover{border-color:#BDBDC1;transform:translateY(-1px)}
.uf-btn:active{transform:scale(.97)}
.uf-btn.pri{background:var(--ink);color:#fff;border-color:var(--ink)}
.uf-btn.pri:hover{background:#26262A;box-shadow:0 8px 20px -10px rgba(11,11,12,.55)}
.uf-btn.sm{padding:8px 12px;font-size:12.5px;border-radius:8px}
.uf-btn.ghost{background:transparent;border-color:transparent;color:var(--ink2)}
.uf-btn.ghost:hover{background:var(--soft)}
.uf-btn.bad{color:var(--err)}
.uf-btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.uf-btn:focus-visible,.uf-in-field:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.uf-btn .rip{position:absolute;border-radius:50%;background:currentColor;opacity:.18;transform:scale(0);animation:uf-rip .6s var(--ease) forwards;pointer-events:none}
@keyframes uf-rip{to{transform:scale(1);opacity:0}}
input.uf-in-field,select.uf-in-field,textarea.uf-in-field{width:100%;background:#fff;border:1px solid var(--line2);border-radius:10px;padding:12px 14px;font:15px var(--font);color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.uf-in-field:hover{border-color:#BDBDC1}
.uf-in-field:focus{border-color:var(--ink);box-shadow:0 0 0 4px rgba(11,11,12,.07);outline:none}
.uf-label{display:block;font-size:12.5px;font-weight:600;color:var(--ink2);margin:0 0 6px}

/* ---- chips, progress, lists ---- */
.uf-chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--ink2)}
.uf-chip.ok{background:var(--ok-bg);color:var(--ok)} .uf-chip.warn{background:var(--warn-bg);color:var(--warn)} .uf-chip.err{background:var(--err-bg);color:var(--err)} .uf-chip.dark{background:var(--ink);color:#fff}
.uf-prog{height:6px;border-radius:99px;background:var(--soft);overflow:hidden}
.uf-prog>i{display:block;height:100%;width:0;background:var(--ink);border-radius:99px;transition:width 1.1s var(--ease)}
.uf-item{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:start;padding:16px 0;border-top:1px solid var(--line);transition:background .25s var(--ease)}
.uf-item:first-child{border-top:0}
.uf-tick{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line2);display:grid;place-items:center;margin-top:2px;transition:background .4s var(--ease),border-color .4s var(--ease)}
.uf-tick svg{width:12px;height:12px;stroke:#fff;stroke-width:3;fill:none;stroke-dasharray:20;stroke-dashoffset:20;stroke-linecap:round;stroke-linejoin:round}
.uf-tick.done{background:var(--ink);border-color:var(--ink)} .uf-tick.done svg{animation:uf-draw .5s .1s var(--ease) forwards}
.uf-tick.review{border-color:var(--ink);border-style:dashed}
.uf-item h4{margin:0;font-size:15px;font-weight:600;letter-spacing:-.01em}
.uf-item p{margin:2px 0 0;font-size:13.5px;color:var(--muted);line-height:1.5}
.uf-drop{border:1.5px dashed var(--line2);border-radius:12px;padding:14px 16px;text-align:center;font-size:13px;color:var(--muted);cursor:pointer;transition:border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease)}
.uf-drop:hover,.uf-drop.over{border-color:var(--ink);background:var(--soft);color:var(--ink)}
.uf-table{width:100%;border-collapse:collapse;font-size:14px}
.uf-table th{text-align:left;font:600 11px/1 var(--font);letter-spacing:.1em;text-transform:uppercase;color:var(--faint);padding:0 12px 12px}
.uf-table td{padding:14px 12px;border-top:1px solid var(--line)}
.uf-table tbody tr{transition:background .2s var(--ease);cursor:pointer}
.uf-table tbody tr:hover{background:#F7F7F8}
.uf-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:0 0 24px;overflow-x:auto}
.uf-tabs button{appearance:none;background:none;border:0;padding:12px 14px;font:600 13.5px var(--font);color:var(--muted);cursor:pointer;position:relative;white-space:nowrap}
.uf-tabs button::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:var(--ink);transform:scaleX(0);transition:transform .35s var(--ease)}
.uf-tabs button.on{color:var(--ink)} .uf-tabs button.on::after{transform:scaleX(1)}
.uf-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-size:13.5px;opacity:0;pointer-events:none;transition:opacity .35s var(--ease),transform .35s var(--ease);z-index:99;max-width:90vw}
.uf-toast.on{opacity:1;transform:translate(-50%,0)}
.uf-err{color:var(--err);font-size:13px;margin:8px 0 0}
@media (max-width:640px){.uf-wrap{padding:28px 16px 80px}.uf-top{padding:0 16px}.uf-item{grid-template-columns:auto 1fr}.uf-item .act{grid-column:2}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms !important;animation-delay:0s !important;transition-duration:.001ms !important}.uf-rv{opacity:1;transform:none}}

/* ---- micro-interactions on the application (index.html) ---- */
header.top .brand img{height:22px;display:block}
.btn{position:relative;overflow:hidden}
.btn:hover{transform:translateY(-1px)}
.card{transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.card:hover{border-color:var(--line2)}