:root{--bg:#f6f7f9;--panel:#ffffff;--panel-soft:#f1f4f8;--ink:#172033;--muted:#667085;--blue:#0b66d8;--blue-soft:#e8f2ff;--green:#1f9d66;--red:#d92d20;--amber:#b7791f;--line:#d9e1ec;--shadow:0 14px 38px rgba(16,24,40,.08);--radius:8px}
*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased;background:linear-gradient(180deg,#fff 0,#f6f7f9 320px)}
.topbar{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 1180px)/2));background:rgba(255,255,255,.86);-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:baseline;gap:12px;min-width:0}.brand b{font-size:14px;letter-spacing:.01em}.brand span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.profile-links{display:flex;align-items:center;gap:8px}.profile-links a,.footer-links a{color:var(--blue);text-decoration:none;font-size:11px;font-weight:700;transition:color .18s ease,text-decoration-color .18s ease}.profile-links a:hover,.footer-links a:hover{color:#075abd;text-decoration:underline;text-underline-offset:3px}.top-actions{display:flex;align-items:center;gap:10px}.connect-button{border:1px solid rgba(11,102,216,.22);border-radius:999px;background:#fff;color:var(--blue);font-size:12px;font-weight:800;padding:8px 12px;cursor:pointer;box-shadow:0 1px 2px rgba(16,24,40,.06);transition:background .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}.connect-button:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-1px);box-shadow:0 8px 18px rgba(11,102,216,.12)}.info-button{width:32px;height:32px;border-radius:50%;border:1px solid rgba(11,102,216,.28);background:#fff;color:var(--blue);font-weight:800;cursor:pointer;display:grid;place-items:center;box-shadow:0 1px 2px rgba(16,24,40,.06);transition:background .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}.info-button:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-1px);box-shadow:0 8px 18px rgba(11,102,216,.14)}.info-button:active{transform:translateY(0) scale(.98)}
main{width:min(1040px,calc(100% - 40px));margin:auto}.hero{text-align:center;padding:76px 0 36px}.hero>p:first-child{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.1em;text-transform:uppercase}.hero h1{font-size:clamp(40px,6vw,68px);line-height:1.04;margin:12px 0 18px;letter-spacing:0}.hero h1~p{font-size:18px;line-height:1.45;color:var(--muted);max-width:680px;margin:auto}
.upload{background:rgba(255,255,255,.86);border:1px solid rgba(217,225,236,.92);box-shadow:var(--shadow);border-radius:var(--radius);padding:22px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);animation:panelIn .28s ease-out}.browse-panel{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px 18px;padding:18px;background:linear-gradient(180deg,#f8fbff,#f2f6fb);border:1px dashed #b9c8dc;border-radius:var(--radius);transition:border-color .18s ease,background .18s ease,box-shadow .18s ease}.browse-panel>b{font-size:15px}.browse-panel>span{font-size:12px;color:var(--muted);line-height:1.4}.browse-panel.dragging{background:#e8f2ff;border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}
#workbooks,#timing,#validationWorkbooks{position:absolute!important;width:1px!important;height:1px!important;opacity:0!important;overflow:hidden!important;pointer-events:none!important}.choose-button{justify-self:end;border:1px solid rgba(11,102,216,.22);border-radius:999px;background:#fff;color:var(--blue);font-weight:700;font-size:13px;padding:10px 15px;cursor:pointer;box-shadow:0 1px 2px rgba(16,24,40,.05);transition:background .18s ease,border-color .18s ease,transform .18s ease}.choose-button:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-1px)}#selectedWorkbooks,#selectedTiming,#selectedValidation{grid-column:1/-1;color:var(--muted);font-size:11px;line-height:1.4;overflow-wrap:anywhere}
.privacy-disclaimer{grid-column:1/-1;padding:12px 14px;border:1px solid rgba(31,157,102,.25);background:#eefbf5;color:#245b44;border-radius:var(--radius);font-size:12px;line-height:1.45}.privacy-disclaimer b{color:#16633f}.option-toolbar{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius)}.option-toolbar label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:800;color:var(--ink);cursor:pointer}.option-toolbar input{width:16px;height:16px;accent-color:var(--blue)}.option-toolbar span{font-size:12px;color:var(--muted)}.option-card{display:flex;align-items:flex-start;gap:12px;min-height:116px;padding:16px;background:var(--panel-soft);border:1px solid transparent;border-radius:var(--radius);cursor:pointer;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}.option-card:hover{background:#fff;border-color:#c8d7eb;box-shadow:0 8px 20px rgba(16,24,40,.07);transform:translateY(-1px)}.option-card input[type=checkbox]{width:18px;height:18px;margin:2px 0 0;accent-color:var(--blue);flex:0 0 auto}.option-card span{display:grid;gap:7px}.option-card b{font-size:14px;line-height:1.2}.option-card small{font-size:12px;line-height:1.42;color:var(--muted)}.option-card:has(input:checked){background:#e8f2ff;border-color:#8dbcf4;box-shadow:inset 0 0 0 1px rgba(11,102,216,.22),0 8px 20px rgba(11,102,216,.08)}
#analyze{grid-column:1/-1;border:0;border-radius:999px;background:var(--blue);color:#fff;font-weight:800;font-size:14px;padding:13px 18px;cursor:pointer;box-shadow:0 12px 24px rgba(11,102,216,.22);transition:background .18s ease,transform .18s ease,box-shadow .18s ease}#analyze:hover{background:#075abd;transform:translateY(-1px);box-shadow:0 16px 28px rgba(11,102,216,.26)}#analyze:active{transform:translateY(0)}#status{grid-column:1/-1;text-align:center;color:var(--muted);font-size:12px;min-height:18px}
.result{background:var(--panel);border:1px solid var(--line);box-shadow:0 8px 22px rgba(16,24,40,.06);padding:18px 20px;margin-top:12px;border-radius:var(--radius);display:flex;gap:14px;align-items:center;animation:panelIn .24s ease-out}.result:before{content:"";width:9px;height:9px;background:var(--green);border-radius:50%;box-shadow:0 0 0 5px rgba(31,157,102,.12);flex:0 0 auto}.result.fail:before{background:var(--red);box-shadow:0 0 0 5px rgba(217,45,32,.12)}.result>div{flex:1;min-width:0}.result h3,.result p{margin:0}.result h3{font-size:15px;margin-bottom:6px}.result p{color:var(--muted);font-size:12px;line-height:1.4}.result button{border:0;background:var(--blue-soft);color:var(--blue);font-weight:800;padding:10px 14px;border-radius:999px;cursor:pointer;transition:background .18s ease,transform .18s ease}.result button:hover{background:#d8eaff;transform:translateY(-1px)}footer{display:grid;justify-items:center;gap:8px;text-align:center;color:#8a94a6;font-size:11px;padding:42px}footer b{font-size:12px;color:#3f5f86;font-weight:700}.footer-links{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.info-dialog{width:min(820px,calc(100% - 32px));border:0;border-radius:var(--radius);padding:0;box-shadow:0 28px 90px rgba(16,24,40,.28);color:var(--ink);animation:dialogIn .18s ease-out}.info-dialog::backdrop{background:rgba(15,23,42,.36);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.info-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);background:#f8fafc}.info-head b{font-size:15px}.info-head button{width:32px;height:32px;border:1px solid transparent;border-radius:50%;background:#eef3f8;color:#5b6678;font-size:14px;font-weight:800;line-height:1;display:grid;place-items:center;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease}.info-head button:hover{background:#fff;border-color:#c8d7eb;color:var(--ink);transform:scale(1.04)}.info-head button:focus-visible{outline:2px solid rgba(11,102,216,.42);outline-offset:2px}.info-body{padding:20px;max-height:72vh;overflow:auto;font-size:13px;line-height:1.48;color:var(--ink)}.info-body h3{font-size:14px;margin:18px 0 8px}.info-body h3:first-child{margin-top:0}.info-body p{margin:0 0 10px;color:var(--muted)}.info-body ul{margin:0;padding-left:18px}.info-body li{margin:8px 0}.info-body b{color:var(--ink)}
@keyframes panelIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes dialogIn{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(max-width:980px){.option-toolbar{align-items:flex-start;flex-direction:column}.upload{grid-template-columns:repeat(2,minmax(0,1fr))}.browse-panel{grid-template-columns:1fr}.choose-button{justify-self:start}}@media(max-width:700px){.brand span,.profile-links{display:none}main{width:min(100% - 28px,1040px)}.hero{padding:52px 0 28px}.hero h1{font-size:40px}.hero h1~p{font-size:16px}.upload{grid-template-columns:1fr;padding:16px}.browse-panel,.option-card{min-height:auto}.result{align-items:flex-start}.result button{white-space:nowrap}.topbar{padding:0 14px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

button:focus-visible,.option-card:focus-within{outline:2px solid rgba(11,102,216,.42);outline-offset:3px}
.option-card input[type=checkbox]:focus{outline:none}


.connect-body{display:grid;gap:14px}.feedback-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.feedback-grid label{display:grid;gap:6px;font-size:12px;font-weight:700;color:var(--ink)}.feedback-grid label.full{grid-column:1/-1}.feedback-grid em{font-style:normal;font-weight:500;color:var(--muted)}.feedback-grid input,.feedback-grid textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius);padding:11px 12px;font:13px/1.35 inherit;color:var(--ink);background:#fbfcfe;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}.feedback-grid textarea{min-height:140px;resize:vertical}.feedback-grid input:focus,.feedback-grid textarea:focus{outline:none;border-color:#8dbcf4;box-shadow:0 0 0 3px rgba(11,102,216,.12);background:#fff}.copy-feedback{justify-self:start;border:0;border-radius:999px;background:var(--blue);color:#fff;font-weight:800;font-size:13px;padding:10px 14px;cursor:pointer;transition:background .18s ease,transform .18s ease}.copy-feedback:hover{background:#075abd;transform:translateY(-1px)}#feedbackStatus{color:var(--green);font-size:12px;min-height:16px}
@media(max-width:700px){.connect-button{display:none}.feedback-grid{grid-template-columns:1fr}}