:root{--brand:#5b2bd6;--brand-d:#4520a8;--brand-l:#f1ecff;--ink:#1f1b33;--ink2:#5a5670;--ink3:#8a86a0;--line:#e9e5f5;--bg:#f6f4fb;--ok:#13a36b;--warn:#d98a00;--bad:#d64545;--card:#fff;--r:14px}
*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;font-size:14px;color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.boot{padding:80px;text-align:center;color:var(--ink3)}
.shell{display:flex;min-height:100vh}
.side{width:230px;background:#1c1533;color:#cfc8ea;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0}
.logo{display:flex;align-items:center;gap:10px;padding:20px 20px 18px;color:#fff;font-weight:700;font-size:16px}.logo i{width:32px;height:32px;border-radius:9px;background:var(--brand);display:grid;place-items:center;font-style:normal}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 20px;color:#cfc8ea;font-weight:500;border-left:3px solid transparent}.nav a:hover{background:rgba(255,255,255,.05);text-decoration:none;color:#fff}
.nav a.on{background:rgba(124,77,255,.18);color:#fff;border-left-color:#9a74ff}.nav .ic{width:18px;text-align:center;opacity:.9}
.side .foot{margin-top:auto;padding:16px 20px;font-size:12px;color:#8f86b3;border-top:1px solid rgba(255,255,255,.07)}.side .foot a{color:#b9a8ff}
.main{flex:1;min-width:0;padding:26px 32px 60px}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}.top h1{font-size:22px;margin:0}.top .sub{color:var(--ink3);margin-top:3px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:18px}.card h3{margin:0 0 14px;font-size:15px}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
@media(max-width:1100px){.g4,.g5{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.side{display:none}.main{padding:16px}.g2,.g3{grid-template-columns:1fr}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}.stat .l{color:var(--ink3);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.4px}.stat .v{font-size:26px;font-weight:700;margin-top:6px}.stat .s{color:var(--ink3);font-size:12px;margin-top:2px}
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:9px 15px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}.btn:hover{border-color:#cdc3ee;text-decoration:none}
.btn.p{background:var(--brand);border-color:var(--brand);color:#fff}.btn.p:hover{background:var(--brand-d)}.btn.d{color:var(--bad)}.btn.sm{padding:5px 10px;font-size:12px;border-radius:8px}.btn:disabled{opacity:.55;cursor:default}
.btn.ghost{border-color:transparent;background:transparent}
table.t{width:100%;border-collapse:collapse}.t th{text-align:left;font-size:12px;color:var(--ink3);font-weight:600;padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap}.t td{padding:10px;border-bottom:1px solid #f1eef8;vertical-align:middle}.t tr.click{cursor:pointer}.t tr.click:hover td{background:#faf8ff}
.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700;background:#eee;color:#555;text-transform:capitalize}
.pill.draft{background:#eef0f4;color:#5b6170}.pill.scheduled{background:#fff4dc;color:#9a6700}.pill.sending{background:#e5f0ff;color:#1d5fd1}.pill.paused{background:#fde9d9;color:#a8530a}.pill.sent,.pill.active,.pill.ok,.pill.done{background:#e1f6ec;color:#0c7a4d}.pill.cancelled,.pill.fail,.pill.exited{background:#fde8e8;color:#a32121}.pill.warn{background:#fff4dc;color:#9a6700}
.pill.student{background:#e9e3ff;color:#4b22b8}.pill.lead{background:#e5f0ff;color:#1d5fd1}
.tag{display:inline-block;background:var(--brand-l);color:var(--brand-d);padding:2px 8px;border-radius:6px;font-size:11px;margin:1px 3px 1px 0;font-weight:600}
label.f{display:block;margin-bottom:12px}label.f>span{display:block;font-size:12px;font-weight:600;color:var(--ink2);margin-bottom:5px}
input,select,textarea{font:inherit;color:inherit;width:100%;padding:9px 11px;border:1px solid #ddd6f0;border-radius:9px;background:#fff}input:focus,select:focus,textarea:focus,.rte:focus{outline:2px solid #cdbcff;border-color:var(--brand)}
input[type=checkbox],input[type=radio]{width:auto;accent-color:var(--brand)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row>*{flex:1}.row>.auto{flex:0 0 auto}
.muted{color:var(--ink3)}.small{font-size:12px}.right{text-align:right}.mt{margin-top:14px}.mb0{margin-bottom:0}.nowrap{white-space:nowrap}
.toast{position:fixed;right:22px;bottom:22px;background:#1c1533;color:#fff;padding:12px 18px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);z-index:99;max-width:420px}.toast.err{background:var(--bad)}
.modal-bg{position:fixed;inset:0;background:rgba(20,12,40,.45);display:flex;align-items:flex-start;justify-content:center;z-index:50;padding:50px 16px;overflow:auto}
.modal{background:#fff;border-radius:16px;width:100%;max-width:620px;padding:24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.modal.wide{max-width:960px}.modal h2{margin:0 0 16px;font-size:18px}.modal .acts{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap}.tabs a{padding:10px 14px;color:var(--ink2);font-weight:600;border-bottom:2px solid transparent;cursor:pointer}.tabs a.on{color:var(--brand);border-bottom-color:var(--brand)}.tabs a:hover{text-decoration:none}
.empty{text-align:center;padding:44px 20px;color:var(--ink3)}.empty b{display:block;color:var(--ink);font-size:16px;margin-bottom:6px}
.login{max-width:380px;margin:12vh auto;background:#fff;border-radius:18px;padding:34px;box-shadow:0 20px 50px rgba(40,20,90,.1)}.login h1{color:var(--brand);margin:0 0 4px}
/* builder */
.builder{display:grid;grid-template-columns:minmax(340px,440px) 1fr;gap:18px;align-items:start}@media(max-width:1000px){.builder{grid-template-columns:1fr}}
.blocks .blk{border:1px solid var(--line);border-radius:12px;margin-bottom:8px;background:#fff}.blk-h{display:flex;align-items:center;gap:8px;padding:9px 12px;cursor:pointer}.blk-h b{flex:1;font-size:13px}.blk-h .muted{font-size:12px;max-width:180px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.blk.open{border-color:#c9b8ff;box-shadow:0 0 0 3px #f1ecff}.blk-b{padding:4px 12px 12px;border-top:1px solid var(--line)}
.addbar{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.addbar .btn{padding:6px 10px;font-size:12px}
.preview{position:sticky;top:16px}.preview iframe{width:100%;height:78vh;border:1px solid var(--line);border-radius:12px;background:#f3f1f9}
.pv-bar{display:flex;align-items:center;gap:8px;margin-bottom:8px}.pv-bar .seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}.pv-bar .seg a{padding:6px 12px;font-size:12px;font-weight:600;color:var(--ink2);cursor:pointer}.pv-bar .seg a.on{background:var(--brand);color:#fff;text-decoration:none}
.rte{min-height:110px;padding:10px 12px;border:1px solid #ddd6f0;border-radius:9px;background:#fff;line-height:1.55}.rte-bar{display:flex;gap:4px;margin-bottom:5px}.rte-bar button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:3px 8px;cursor:pointer;font:inherit;font-size:12px}
.subitem{border:1px dashed #d8cff5;border-radius:10px;padding:10px;margin-bottom:8px;background:#fcfbff}
.rule{display:grid;grid-template-columns:1.3fr 1fr 1.3fr auto;gap:8px;margin-bottom:8px}
.check{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid #f1eef8}.check:last-child{border:0}.check .dot{width:22px;height:22px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700}.check .dot.ok{background:var(--ok)}.check .dot.warn{background:var(--warn)}.check .dot.fail{background:var(--bad)}
.code{font-family:Consolas,Menlo,monospace;font-size:12px;background:#f6f4fb;border:1px solid var(--line);border-radius:8px;padding:8px 10px;word-break:break-all}
.timeline .ev{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid #f4f1fb}.timeline .ev .ic{width:26px;height:26px;border-radius:8px;background:var(--brand-l);display:grid;place-items:center;flex-shrink:0}
.bar{height:8px;background:#eee9fb;border-radius:6px;overflow:hidden}.bar i{display:block;height:100%;background:var(--brand)}
.steps{display:flex;gap:6px;margin-bottom:18px;flex-wrap:wrap}.steps a{padding:8px 14px;border-radius:20px;background:#fff;border:1px solid var(--line);font-weight:600;color:var(--ink2);cursor:pointer}.steps a.on{background:var(--brand);color:#fff;border-color:var(--brand);text-decoration:none}
.seqstep{display:flex;gap:14px}.seqstep .rail{display:flex;flex-direction:column;align-items:center}.seqstep .rail .n{width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700}.seqstep .rail .ln{flex:1;width:2px;background:var(--line);margin:4px 0}
.seqstep .body{flex:1}
.hint{background:#f6f3ff;border:1px solid #e3dafd;border-radius:10px;padding:10px 12px;color:var(--ink2);font-size:13px}
.hint.warn{background:#fff8e6;border-color:#f6dfa4}