/* ============================================================
   KARA Campus AI Agent — 기능 모듈 (통계 · 워크플로우 · 문항 · diff · 타임라인 · 모달 · 토스트)
   ============================================================ */

/* ---------- 통계 카드 ---------- */
.stat{display:flex;flex-direction:column;gap:8px;padding:18px}
.stat .s-top{display:flex;align-items:center;justify-content:space-between}
.s-ic{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;font-size:18px;flex:0 0 40px}
.s-ic svg{width:19px;height:19px}
.stat .s-val{font-size:28px;font-weight:800;letter-spacing:-.5px;line-height:1}
.stat .s-lab{font-size:12.5px;color:var(--ink-2)}
.stat .s-delta{font-size:11.5px;font-weight:600}
.s-delta.up{color:var(--ok)} .s-delta.down{color:var(--danger)}

/* ---------- 차트: 세로 막대 (월별 추이) ---------- */
.bchart{display:flex;align-items:flex-end;gap:14px;height:188px;padding:4px 2px 0}
.bcol{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;height:100%}
.bcol-val{font-size:11.5px;font-weight:700;color:var(--ink-2);font-variant-numeric:tabular-nums}
.bcol-track{flex:1;width:100%;max-width:46px;display:flex;align-items:flex-end}
.bcol-bar{width:100%;border-radius:7px 7px 3px 3px;background:var(--c-blue);transition:height .5s cubic-bezier(.2,.7,.3,1);min-height:4px}
.bcol:hover .bcol-bar{filter:brightness(1.06)}
.bcol-x{font-size:11.5px;color:var(--ink-3);font-weight:600}

/* ---------- 차트: 도넛 ---------- */
.donut-wrap{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.donut{width:148px;height:148px;border-radius:50%;flex:0 0 148px;display:grid;place-items:center;position:relative}
.donut-hole{width:96px;height:96px;border-radius:50%;background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.15;box-shadow:var(--shadow-sm)}
.donut-hole b{font-size:24px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.donut-hole span{font-size:11px;color:var(--ink-3)}
.donut-legend{flex:1;min-width:170px;display:flex;flex-direction:column;gap:9px}
.dl-item{display:flex;align-items:center;gap:9px;font-size:12.5px}
.dl-dot{width:10px;height:10px;border-radius:3px;flex:0 0 10px}
.dl-lab{color:var(--ink-2);font-weight:600}
.dl-val{margin-left:auto;color:var(--ink-3);font-variant-numeric:tabular-nums}
.dl-val i{font-style:normal;font-weight:700;color:var(--ink-2);margin-left:3px}

/* ---------- 차트: 가로 막대 ---------- */
.hbars{display:flex;flex-direction:column;gap:13px;padding:2px 0}
.hbar{display:grid;grid-template-columns:104px 1fr 52px;align-items:center;gap:12px}
.hb-lab{font-size:12.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hb-track{height:10px;border-radius:8px;background:var(--surface-2);overflow:hidden}
.hb-fill{display:block;height:100%;border-radius:8px;transition:width .55s cubic-bezier(.2,.7,.3,1)}
.hb-fill.primary{background:var(--c-blue)}
.hb-fill.accent{background:var(--c-cyan)}
.hb-val{font-size:12px;font-weight:700;color:var(--ink-2);text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 워크플로우 스테퍼 ---------- */
.flow{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.flow .step{display:flex;align-items:center;gap:9px;padding:7px 0}
.flow .s-dot{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;background:#e7edf4;color:var(--ink-3);border:2px solid #e7edf4}
.flow .step.done .s-dot{background:var(--ok);border-color:var(--ok);color:#fff}
.flow .step.active .s-dot{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 0 0 4px var(--primary-50)}
.flow .s-lab{font-size:12.5px;font-weight:600;color:var(--ink-3)}
.flow .step.done .s-lab,.flow .step.active .s-lab{color:var(--ink)}
.flow .s-line{width:38px;height:2px;background:#e1e7ef;margin:0 6px}
.flow .step.done + .s-line{background:var(--ok)}

/* ---------- 분할 작업화면 ---------- */
.split{display:grid;grid-template-columns:340px 1fr;gap:18px;align-items:start}
.split-3{display:grid;grid-template-columns:300px 1fr 280px;gap:18px;align-items:start}
@media(max-width:1180px){.split,.split-3{grid-template-columns:1fr}}

/* ---------- 생성 결과 / 문항 카드 ---------- */
.qcard{border:1px solid var(--line);border-radius:var(--r);padding:16px;background:var(--surface);margin-bottom:14px;transition:.15s}
.qcard:hover{box-shadow:var(--shadow-md);border-color:#cfdcec}
.qcard .q-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.qcard .q-no{font-size:12px;font-weight:700;color:var(--primary);background:var(--primary-50);padding:3px 9px;border-radius:6px}
.qcard .q-body{font-size:14.5px;font-weight:600;line-height:1.6;margin-bottom:12px}
.opt{display:flex;gap:9px;padding:7px 11px;border-radius:8px;font-size:13.5px;margin-bottom:5px;border:1px solid var(--line-2)}
.opt.correct{background:var(--ok-50);border-color:#c2ebd3;font-weight:600}
.opt .o-mark{font-weight:700;color:var(--ink-3);min-width:18px}
.opt.correct .o-mark{color:#0f7a44}
.q-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.explain{background:var(--surface-2);border:1px solid var(--line-2);border-radius:9px;padding:11px 13px;font-size:13px;color:var(--ink-2);line-height:1.6;margin-top:10px}
.explain b{color:var(--ink)}

/* 수식 렌더링 박스 (수식·이미지 인식/검증) */
.formula{display:flex;align-items:center;gap:10px;background:#0f1b2e;color:#dCe7f5;border-radius:9px;padding:11px 14px;margin-bottom:12px;font-family:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-size:14px;letter-spacing:.2px;overflow-x:auto}
.formula .fm-tag{flex:0 0 auto;font-family:var(--font);font-size:10.5px;font-weight:700;color:var(--c-cyan-2);background:rgba(56,220,236,.12);border:1px solid rgba(56,220,236,.3);padding:2px 7px;border-radius:6px}

/* 근거(그라운딩) 박스 */
.evi{border-left:3px solid var(--accent);background:var(--accent-50);border-radius:0 9px 9px 0;padding:10px 13px;font-size:12.5px;color:#0a5b67;margin-top:8px}
.evi .e-src{font-weight:700;display:flex;align-items:center;gap:6px;margin-bottom:3px;color:#0a7a8a}
.grounded{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:#0a7a8a;background:var(--accent-50);border:1px solid #bfe9ee;padding:2px 8px;border-radius:6px}

/* ---------- diff 비교 ---------- */
.diff{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.diff .d-col{border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.diff .d-h{padding:9px 13px;font-size:12.5px;font-weight:700;border-bottom:1px solid var(--line-2)}
.diff .d-col.before .d-h{background:var(--danger-50);color:#b3322a}
.diff .d-col.after .d-h{background:var(--ok-50);color:#0f7a44}
.diff .d-b{padding:13px;font-size:13.5px;line-height:1.65}
.ins{background:#d7f4e3;border-radius:3px;padding:0 2px}
.del{background:#fbd8d5;border-radius:3px;padding:0 2px;text-decoration:line-through;color:#a3433c}

/* ---------- 타임라인(이력) ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:8px;top:4px;bottom:4px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:18px}
.tl-item::before{content:"";position:absolute;left:-22px;top:3px;width:11px;height:11px;border-radius:50%;background:#fff;border:2.5px solid var(--primary)}
.tl-item.muted::before{border-color:#cdd6e2}
.tl-item .tl-t{font-size:11.5px;color:var(--ink-3)}
.tl-item .tl-m{font-size:13.5px;font-weight:600;margin:1px 0 2px}
.tl-item .tl-d{font-size:12.5px;color:var(--ink-2)}

/* ---------- 진행바 ---------- */
.bar{height:8px;border-radius:8px;background:#e8edf3;overflow:hidden}
.bar > i{display:block;height:100%;border-radius:8px;background:var(--c-blue)}

/* ---------- 업로드 / 드롭존 ---------- */
.drop{border:2px dashed #c2d0e2;border-radius:var(--r);padding:30px;text-align:center;color:var(--ink-2);background:var(--surface-2);transition:.15s}
.drop:hover{border-color:var(--primary);background:var(--primary-50)}
.drop .d-ic{font-size:32px;margin-bottom:8px}
.up-type{transition:.15s}
.up-type:hover{border-color:var(--primary);background:var(--primary-50)}
.json-box{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:12px 13px;font-size:11.5px;line-height:1.65;white-space:pre-wrap;word-break:break-all;color:var(--ink-2);max-height:300px;overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---------- 로딩(생성중) ---------- */
.gen-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:50px;color:var(--ink-2)}
.spinner{width:42px;height:42px;border-radius:50%;border:3.5px solid var(--primary-100);border-top-color:var(--primary);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.gen-steps{font-size:13px;color:var(--ink-3)}

/* ---------- 빈 상태 ---------- */
.empty{text-align:center;padding:48px 20px;color:var(--ink-3)}
.empty .e-ic{font-size:40px;opacity:.5;margin-bottom:10px}
.empty h4{font-size:15px;color:var(--ink-2);margin-bottom:4px}

/* ---------- 토스트 ---------- */
.toast-root{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:80}
.toast{background:#16202E;color:#fff;padding:12px 16px;border-radius:11px;box-shadow:var(--shadow-lg);font-size:13.5px;font-weight:500;display:flex;align-items:center;gap:10px;animation:toastIn .3s ease;min-width:240px}
.toast .t-ic{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:13px;flex:0 0 22px}
.toast.ok .t-ic{background:var(--ok)} .toast.info .t-ic{background:var(--primary)} .toast.warn .t-ic{background:var(--warn)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}

/* ---------- 모달 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(13,26,46,.5);backdrop-filter:blur(2px);display:grid;place-items:center;z-index:70;animation:fade .2s;padding:24px}
.modal{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);width:min(560px,100%);max-height:88vh;overflow:auto;animation:pop .25s ease}
.modal.wide{width:min(880px,100%)}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(8px)}to{opacity:1;transform:none}}
.modal-h{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line-2);position:sticky;top:0;background:var(--surface)}
.modal-h h3{font-size:16px;font-weight:700}
.modal-b{padding:22px}
.modal-f{display:flex;justify-content:flex-end;gap:10px;padding:16px 22px;border-top:1px solid var(--line-2);position:sticky;bottom:0;background:var(--surface)}