:root{
  --ink:#17202a;--muted:#687384;--navy:#173b5c;--blue:#245c89;--bg:#f3f5f7;
  --line:#d9e0e6;--white:#fff;--green:#e5f6eb;--greenText:#19643a;--red:#9f2f2f;
}
*{box-sizing:border-box} body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit}.topbar{height:58px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 1120px)/2))}
.topbar span{opacity:.7}.shell{max-width:1120px;margin:28px auto;padding:0 18px}.narrow{max-width:680px}.landing{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#173b5c,#2b628d)}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 4px 20px rgba(20,35,50,.045);margin-bottom:18px}
.hero{max-width:760px;padding:42px}.hero h1,.pagehead h1{font-size:2.35rem;line-height:1.07;margin:.25rem 0 1rem}.hero p{font-size:1.15rem;color:var(--muted);max-width:620px}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#557083}.actions,.inline,.split,.pagehead{display:flex;gap:10px;align-items:center}.split,.pagehead{justify-content:space-between}.pagehead{margin-bottom:18px}.pagehead h1{margin:.2rem 0}
.button,button{display:inline-block;text-decoration:none;border:1px solid #cdd6de;background:#fff;color:var(--ink);border-radius:9px;padding:10px 14px;font:inherit;cursor:pointer}
.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.ghost{background:transparent;color:white;border-color:rgba(255,255,255,.35)}.small{padding:7px 10px;font-size:.9rem}.wide{width:100%;padding:12px}.hidden{display:none!important}
label{display:block;font-weight:650;margin:14px 0}input,select,textarea{width:100%;margin-top:7px;border:1px solid #cbd5df;border-radius:9px;padding:11px;background:#fff;font:inherit}
.inline input{margin:0;min-width:180px}.muted{color:var(--muted)}.message{margin-top:12px;color:var(--muted)}.message.ok{color:var(--greenText)}.message.error{color:var(--red)}
.grid-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.stat{display:flex;flex-direction:column}.stat strong{font-size:2rem}.stat span{color:var(--muted)}
.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{border-radius:999px;padding:8px 12px;background:#edf1f4;border:1px solid #dde3e8;cursor:pointer}.chip.active{background:var(--navy);color:white}
.tablewrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px 9px;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:.86rem;color:#657384}
.badge{display:inline-block;border-radius:999px;padding:4px 8px;font-size:.82rem;background:#edf0f2}.badge.ok{background:var(--green);color:var(--greenText)}
.iconbtn{padding:7px 9px}.danger{color:var(--red)}.pill{background:#e8edf1;border-radius:999px;padding:7px 10px;font-size:.86rem}
.day-editor{border-top:1px solid var(--line);padding-top:14px;margin-top:18px}.time-row{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;align-items:end;margin:8px 0}.time-row label{margin:0;font-size:.86rem}.time-row button{margin-bottom:0}
code{background:#f0f2f4;padding:2px 5px;border-radius:5px}
@media(max-width:760px){.grid-two,.stats{grid-template-columns:1fr}.split,.pagehead{align-items:flex-start;flex-direction:column}.inline{width:100%}.hero{padding:28px}.hero h1,.pagehead h1{font-size:1.9rem}.time-row{grid-template-columns:1fr 1fr auto}}

.wrap{flex-wrap:wrap}

.semester-settings{display:flex;gap:12px;align-items:end;flex-wrap:wrap;margin-top:16px}
.semester-settings label{min-width:180px;margin:0}
.schedule-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:18px}
.day-schedule{display:flex;flex-direction:column;gap:8px}
.lesson-card{display:grid;grid-template-columns:88px 1fr auto;gap:10px;align-items:center;border:1px solid #e3e7eb;border-radius:12px;padding:10px 12px;background:#fff}
.lesson-time{font-weight:800;font-variant-numeric:tabular-nums}
.lesson-card select{margin:0;min-width:118px}
.lesson-meta{font-size:12px;color:#687384}
.lunch-card{border:1px dashed #c9d0d7;border-radius:12px;padding:10px 12px;color:#687384;background:#f8fafb}
.unassigned{margin-top:16px;border:1px solid #e7b7b7;background:#fff5f5;border-radius:12px;padding:14px}
.planner-actions{margin-top:16px}
@media(max-width:760px){.schedule-grid{grid-template-columns:1fr}.lesson-card{grid-template-columns:78px 1fr}.lesson-card select{grid-column:1/-1}}

.planning-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:18px}
.planning-day{border:1px solid var(--line);border-radius:14px;padding:16px;background:#fbfcfd}
.block-list{display:flex;flex-direction:column;gap:8px}.block-row{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;align-items:end}
.block-row label{margin:0;font-size:.86rem}.lunch-settings{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
@media(max-width:760px){.planning-grid,.lunch-settings{grid-template-columns:1fr}}

.v5-banner{position:sticky;top:0;z-index:9999;background:#17202a;color:#fff;padding:7px 14px;text-align:center;font-size:12px;font-weight:800;letter-spacing:.08em}
.availability-summary{margin-top:8px;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:#f7f9fb;font-size:13px;line-height:1.5}
.availability-summary strong{display:inline-block;min-width:76px}
.slot-debug{margin-top:6px;font-size:13px;line-height:1.45}

.stored-summary{margin-top:12px;padding:12px 14px;border:1px solid var(--line);background:#f7f9fb;border-radius:10px;font-size:.92rem;line-height:1.5}
.stored-summary b{display:block;margin-bottom:4px}

.origin-note{font-size:.82rem;color:var(--muted);margin-top:6px}