/* STER UMSU · สไตล์กลาง (ยกมาจาก Styles ของระบบเดิม) */
:root{--bg:#f5f6fa;--card:#fff;--ink:#16181d;--muted:#5d6470;--line:#eaecf2;--line2:#dfe2ea;--dark:#14161a;--y:#ffcd05;--ysoft:#fff8d6;
--ok:#17693a;--oksoft:#e7f6ec;--warn:#7a4f00;--warnsoft:#fff6dd;--bad:#a61b1b;--badsoft:#fdecec;--info:#1d4ed8;--infosoft:#eaf1ff;--draft:#3730a3;--draftsoft:#eef2ff}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:'IBM Plex Sans Thai','Sarabun','Leelawadee UI',Tahoma,sans-serif;font-size:15px;line-height:1.55}
a{color:inherit}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
.nb{white-space:nowrap}
.muted{color:var(--muted)}
.btn{font-weight:600;font-size:14px;border-radius:10px;padding:9px 16px;border:1px solid var(--line2);background:#fff;min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{border-color:#b9bfca}
.btn.pri{background:var(--y);border-color:var(--y)}
.btn.pri:hover{filter:brightness(.97)}
.btn.bad{background:#fff;border-color:#f1b5b0;color:var(--bad)}
.btn.bad:hover:not(:disabled){background:var(--bad);border-color:var(--bad);color:#fff}
.btn.bad:disabled{opacity:.5;cursor:not-allowed}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 1px 2px rgba(16,24,40,.04);padding:22px;display:flex;flex-direction:column;gap:14px;min-width:0}
.card h2{margin:0;font-size:17px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;white-space:nowrap}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.st-PLANNED{background:#f0f1f4;color:#454b55}.st-OPEN{background:var(--infosoft);color:var(--info)}.st-DRAFT{background:var(--draftsoft);color:var(--draft)}
.st-WAITING{background:var(--warnsoft);color:var(--warn)}.st-REPORTED{background:var(--oksoft);color:var(--ok)}
.f{display:flex;flex-direction:column;gap:6px;font-size:13.5px;font-weight:600;color:#30343b;min-width:0}
.f input,.f select,.f textarea{font-size:15px;font-weight:400;padding:10px 12px;border:1px solid var(--line2);border-radius:10px;background:#fff;width:100%}
.f input:focus,.f select:focus,.f textarea:focus{outline:2px solid var(--y);outline-offset:0;border-color:#c9a400}
.f small{font-weight:400;color:var(--muted);font-size:12.5px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-size:14px;z-index:99;box-shadow:0 8px 24px rgba(0,0,0,.2);max-width:calc(100vw - 32px)}
.toast.err{background:var(--bad)}
.spin{width:18px;height:18px;border:2.5px solid #d5d9e1;border-top-color:var(--ink);border-radius:50%;animation:sp .8s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}
.foot{padding:16px 32px 20px;border-top:1px solid var(--line);font-size:12.5px;color:#6b7280;display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 16px}
@media (max-width:640px){.foot{padding:14px 16px}}