/* GPTS An Tín — wireframe stylesheet */
:root{
  --ink:#101821;--sub:#5d6b7a;--line:#dde3ea;
  --navy:#16324f;--navy-2:#1f4e79;--blue:#2e74b5;--blue-bg:#eaf2f9;
  --gold:#a97a10;--gold-bg:#fdf6e0;
  --green:#1e7e34;--green-bg:#e6f4ea;
  --red:#b32626;--red-bg:#fbeaea;
  --warn:#8a6a0c;--warn-bg:#fff6d9;
  --bg:#f2f5f8;--card:#ffffff;
  --r-card:10px;--r-ctl:7px;
}
*{box-sizing:border-box;margin:0}
html{font-size:15px}
body{font-family:"Be Vietnam Pro",system-ui,sans-serif;background:var(--bg);color:var(--ink);min-height:100vh;display:flex}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none}

/* ===== sidebar ===== */
.side{width:230px;min-height:100vh;background:var(--navy);color:#c7d3de;flex-shrink:0;
  display:flex;flex-direction:column;padding:18px 10px;position:sticky;top:0;height:100vh}
.side .logo{color:#fff;font-weight:700;font-size:1.4rem;letter-spacing:.02em;padding:0 12px;margin-bottom:2px}
.side .logo small{display:block;font-weight:400;font-size:.68rem;color:#8aa2b8;margin-top:2px}
.side nav{margin-top:14px;display:flex;flex-direction:column;gap:1px;flex:1;overflow-y:auto}
.side nav>a{padding:9px 14px;border-radius:7px;font-size:.84rem;line-height:1.3;display:block}
.side nav>a:hover,.nav-grp-toggle:hover{background:rgba(255,255,255,.07);color:#fff}
.side nav>a.on,.nav-grp-items a.on{background:rgba(46,116,181,.5);color:#fff;font-weight:600}
.nav-sep{height:1px;background:rgba(255,255,255,.08);margin:8px 12px}
.nav-grp{margin:1px 0}
.nav-grp-toggle{padding:9px 14px;border-radius:7px;font-size:.84rem;line-height:1.3;
  cursor:pointer;display:flex;align-items:center;color:#c7d3de;user-select:none}
.nav-grp-toggle::after{content:'›';margin-left:auto;font-size:1.1rem;opacity:.4;transition:transform .2s}
.nav-grp.open .nav-grp-toggle::after{transform:rotate(90deg)}
.nav-grp.open>.nav-grp-toggle{color:#fff}
.nav-grp-items{display:none;flex-direction:column;gap:1px;padding:2px 0 4px 12px;
  border-left:1px solid rgba(255,255,255,.1);margin-left:18px}
.nav-grp.open .nav-grp-items{display:flex}
.nav-grp-items a{padding:7px 12px;border-radius:6px;font-size:.8rem;line-height:1.3;color:#a8b9ca;display:block}
.nav-grp-items a:hover{background:rgba(255,255,255,.07);color:#fff}
.side .foot{margin-top:auto;font-size:.68rem;color:#7189a0;padding:12px 12px 2px;border-top:1px solid rgba(255,255,255,.08)}
.side .foot .brand{color:rgba(255,255,255,.6);font-weight:700;font-size:1rem;letter-spacing:.05em;margin-bottom:2px}

/* ===== layout ===== */
.main{flex:1;padding:26px 30px 60px;max-width:1240px}
.crumb{font-size:.82rem;color:var(--sub);margin-bottom:4px}
.crumb a:hover{color:var(--blue)}
h1{font-size:1.5rem;font-weight:700;letter-spacing:-.01em}
.page-head{display:flex;align-items:flex-end;gap:14px;margin-bottom:18px}
.page-head .desc{color:var(--sub);font-size:.85rem;margin-top:4px}
.page-head .grow{flex:1}
.stack{display:flex;flex-direction:column;gap:16px}

/* ===== cards, sections ===== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px}
.card h2{font-size:1rem;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h2 .step-n{background:var(--navy-2);color:#fff;font-size:.72rem;font-weight:600;
  border-radius:999px;padding:2px 9px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px 16px}
.grid4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:14px 16px}
.split{display:grid;grid-template-columns:1fr 360px;gap:16px;align-items:start}

/* ===== forms ===== */
.f label{display:block;font-size:.82rem;font-weight:500;margin-bottom:5px}
.f label .req{color:var(--red)}
.f input,.f select,.f textarea{width:100%;padding:8px 11px;border:1px solid var(--line);
  border-radius:var(--r-ctl);font:inherit;font-size:.88rem;background:#fff;color:var(--ink)}
.f input:focus,.f select:focus,.f textarea:focus{outline:2px solid var(--blue);outline-offset:0;border-color:var(--blue)}
.f input[readonly],.f input:disabled,.f select:disabled{background:#f1f4f7;color:#6b7886}
.f .hint{font-size:.74rem;color:var(--sub);margin-top:4px;line-height:1.4}
.upload{border:1.5px dashed var(--line);border-radius:var(--r-ctl);background:#fafbfd;
  padding:20px 10px;text-align:center;color:var(--blue);font-size:.85rem;font-weight:500;cursor:pointer}
.upload:hover{border-color:var(--blue)}
.upload small{display:block;color:var(--sub);font-weight:400;font-size:.72rem;margin-top:3px}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:var(--r-ctl);
  font-size:.88rem;font-weight:600;border:1px solid transparent;transition:filter .12s}
.btn:hover{filter:brightness(1.06)}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.btn-pri{background:var(--navy-2);color:#fff}
.btn-line{background:#fff;border-color:var(--line);color:var(--ink);font-weight:500}
.btn-ghost{color:var(--navy-2);font-weight:600}
.btn-ok{background:var(--green);color:#fff}
.btn-warn{background:#fff;border-color:#d9a715;color:var(--warn)}
.btn-danger{background:#fff;border-color:#d98080;color:var(--red)}
.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}

/* ===== table ===== */
.tbl{width:100%;border-collapse:collapse;font-size:.86rem}
.tbl th{font-size:.74rem;font-weight:600;color:var(--sub);text-align:left;
  background:#f5f8fb;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:11px 12px;border-bottom:1px solid #edf1f5;vertical-align:middle}
.tbl tbody tr:hover{background:#f7fafc}
.tbl .link{color:var(--navy-2);font-weight:600}
.tbl-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.tbl-foot{display:flex;align-items:center;gap:6px;padding:11px 14px;font-size:.8rem;color:var(--sub)}
.tbl-foot .grow{flex:1}
.pg{padding:5px 10px;border-radius:5px;font-size:.8rem}
.pg.on{background:var(--navy-2);color:#fff}

/* ===== badges ===== */
.bg{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.72rem;font-weight:600;white-space:nowrap}
.bg-gold{background:var(--gold-bg);color:var(--gold)}
.bg-blue{background:var(--blue-bg);color:#155c8f}
.bg-green{background:var(--green-bg);color:var(--green)}
.bg-gray{background:#eef1f4;color:#5b6672}
.bg-red{background:var(--red-bg);color:var(--red)}
.bg-warn{background:var(--warn-bg);color:var(--warn)}
.bg-teal{background:#e0f5f0;color:#0e7a63}
.bg-dark-red{background:#f0d0d0;color:#7a1a1a}

/* ===== banners ===== */
.note{border-radius:var(--r-ctl);padding:11px 14px;font-size:.84rem;line-height:1.45}
.note-warn{background:var(--warn-bg);color:var(--warn)}
.note-info{background:var(--blue-bg);color:#14486f}
.note-ok{background:var(--green-bg);color:var(--green)}

/* ===== dropdown ===== */
.dd{position:relative}
.dd-menu{position:absolute;z-index:30;top:calc(100% + 6px);left:0;right:0;background:#fff;
  border:1px solid var(--line);border-radius:9px;box-shadow:0 10px 28px rgba(16,32,48,.14);
  overflow:hidden;display:none}
.dd.open .dd-menu{display:block}
.dd-item{display:flex;gap:11px;align-items:center;width:100%;text-align:left;padding:11px 14px;border-bottom:1px solid #f0f3f6}
.dd-item:hover{background:var(--blue-bg)}
.dd-item .av{width:32px;height:32px;border-radius:50%;background:#c0ccd8;flex-shrink:0}
.dd-item .nm{font-weight:600;font-size:.88rem}
.dd-item .mt{font-size:.76rem;color:var(--sub)}
.dd-item .rt{margin-left:auto;font-size:.76rem;font-weight:500;color:var(--navy-2);white-space:nowrap}
.dd-new{display:block;width:100%;text-align:left;padding:11px 14px;background:#fafbfd;
  color:var(--navy-2);font-weight:600;font-size:.85rem}
.dd-head{display:flex;align-items:center;gap:10px;padding:9px 14px;background:#f5f8fb;border-bottom:1px solid var(--line);font-size:.78rem}
.dim{opacity:.55}

/* ===== modal ===== */
.overlay{position:fixed;inset:0;background:rgba(18,28,40,.55);display:none;z-index:60;
  align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto}
.overlay.open{display:flex}
.modal{background:#fff;border-radius:14px;max-width:780px;width:100%;padding:22px 24px;
  box-shadow:0 18px 50px rgba(0,0,0,.3)}
.modal .m-head{display:flex;align-items:center;margin-bottom:14px}
.modal .m-head h3{font-size:1.05rem;font-weight:700;flex:1}
.branch{border-radius:9px;padding:14px;margin-top:4px}
.branch-on{background:var(--blue-bg)}
.branch-off{background:#f5f7f9;opacity:.55;pointer-events:none}
.radio-row{display:flex;gap:26px;margin:6px 0 2px}
.radio-row label{display:flex;gap:7px;align-items:center;font-size:.88rem;cursor:pointer;white-space:nowrap}

/* ===== stepper ===== */
.steps{display:flex;flex-direction:column;gap:0;position:relative}
.steps .st{display:flex;gap:12px;align-items:flex-start;font-size:.84rem;position:relative;padding-bottom:20px}
.steps .st:last-child{padding-bottom:0}
/* vertical line */
.steps .st::before{content:'';position:absolute;left:13px;top:28px;bottom:0;width:2px;background:var(--line)}
.steps .st:last-child::before{display:none}
.steps .st.done::before{background:var(--green)}
/* icon circle */
.st-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  flex-shrink:0;font-size:.72rem;font-weight:700;border:2px solid var(--line);background:#fff;color:var(--sub);z-index:1}
.st.done .st-icon{background:var(--green);border-color:var(--green);color:#fff}
.st.now .st-icon{background:#e8f0fe;border-color:var(--navy-2);color:var(--navy-2);
  box-shadow:0 0 0 3px rgba(37,99,235,.15);animation:st-pulse 2s infinite}
@keyframes st-pulse{0%,100%{box-shadow:0 0 0 3px rgba(37,99,235,.15)}50%{box-shadow:0 0 0 6px rgba(37,99,235,.08)}}
/* body */
.st-body{flex:1;min-width:0;padding-top:3px}
.st-title{font-weight:600;line-height:1.3;color:var(--fg)}
.st-desc{font-size:.74rem;color:var(--sub);margin-top:1px}
.st.todo .st-title{color:var(--sub);font-weight:500}
/* meta right */
.st-meta{text-align:right;flex-shrink:0;padding-top:3px}
.st-who{font-size:.76rem;font-weight:500;color:var(--fg)}
.st-status{font-size:.74rem;color:var(--sub)}
.st.now .st-status{color:var(--navy-2);font-weight:600}
.st.todo .st-who,.st.todo .st-status{color:var(--sub)}

/* ===== pipeline (màn 07) ===== */
.pipe{display:flex;gap:0;align-items:stretch;overflow-x:auto;padding:8px 0}
.pipe .node{background:#fff;border:1px solid var(--line);border-radius:10px;padding:15px 16px;min-width:196px;flex:1}
.pipe .node.gpts{border-top:3px solid var(--navy-2)}
.pipe .node.sap{border-top:3px solid var(--gold)}
.pipe .node h3{font-size:.9rem;font-weight:700;margin-bottom:6px}
.pipe .node p{font-size:.78rem;color:var(--sub);line-height:1.45}
.pipe .arr{display:flex;align-items:center;padding:0 8px;color:#8296aa;font-size:1.3rem;flex-shrink:0}
.legend{display:flex;gap:18px;font-size:.78rem;color:var(--sub);margin-top:10px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px}

/* ===== index page ===== */
.toc{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.toc a.card{display:block;transition:border-color .12s}
.toc a.card:hover{border-color:var(--blue)}
.toc .num{font-size:.74rem;color:var(--sub);font-weight:600}
.toc h3{font-size:1rem;font-weight:700;margin:3px 0 5px}
.toc p{font-size:.82rem;color:var(--sub);line-height:1.45}

/* small action link */
.act-link{font-size:.76rem;color:var(--navy-2);text-decoration:underline;cursor:pointer;white-space:nowrap}
.act-link:hover{color:var(--blue)}

/* upload box (compact) */
.upload-compact{border:1.5px dashed var(--line);border-radius:var(--r-ctl);background:#fafbfd;
  padding:14px;text-align:center;color:var(--blue);font-size:.84rem;font-weight:500;cursor:pointer}
.upload-compact:hover{border-color:var(--blue)}

/* ===== permission indicators (01 table) ===== */
.perm-lock{color:var(--sub);font-size:.78rem;white-space:nowrap}
.perm-edit{color:var(--navy-2);font-size:.78rem;white-space:nowrap}
.tbl-action{color:var(--navy-2);font-size:.78rem;font-weight:500;text-decoration:underline;text-underline-offset:2px;white-space:nowrap}
.tbl-action:hover{color:var(--blue)}
.legend-note{font-size:.8rem;color:var(--sub);padding:4px 2px;line-height:1.5}

/* ===== mode tabs (02 form) ===== */
.mode-tab{flex:1;padding:11px 14px;font-size:.84rem;font-weight:500;background:#f5f8fb;color:var(--sub);
  border:none;border-bottom:2px solid transparent;cursor:pointer;transition:background .12s,color .12s}
.mode-tab:hover{background:var(--blue-bg);color:var(--ink)}
.mode-tab.mode-tab-on{background:#fff;color:var(--navy-2);font-weight:600;border-bottom:2px solid var(--navy-2)}
.card-disabled{opacity:.6;pointer-events:none;position:relative}

/* toast */
#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:var(--navy);
  color:#fff;padding:11px 20px;border-radius:9px;font-size:.86rem;display:none;z-index:99;box-shadow:0 8px 24px rgba(0,0,0,.25)}
#toast.show{display:block}

@media (max-width:980px){
  .side{display:none}
  .grid2,.grid3,.grid4,.split,.toc{grid-template-columns:1fr}
  .main{padding:18px 14px}
}
/* ===== diff highlight (resubmitted fields) ===== */
tr.diff-changed>td,
.tbl tr.diff-changed>td,
table.tbl tr.diff-changed>td,
.detail-block table tr.diff-changed>td{background:#fff3cd !important;border-bottom:1px solid #f59e0b !important}
tr.diff-changed>td:first-child,
.tbl tr.diff-changed>td:first-child,
.detail-block table tr.diff-changed>td:first-child{border-left:4px solid #f59e0b !important;padding-left:12px !important}
.diff-old{text-decoration:line-through;color:#b91c1c;font-size:.85rem;margin-right:4px;opacity:.7}
.diff-new{color:#15803d;font-weight:700}
.diff-arrow{color:#9ca3af;margin:0 5px;font-size:.8rem}

@media (prefers-reduced-motion:reduce){*{transition:none!important}}