/* GRASP Hackathon: bố cục dùng chung. Token màu và kiểu thành phần theo GRASP School (tokens.css), để gắn vào School sau này. */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;background:var(--bg);color:var(--text)}
body{font:1rem/1.6 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;overflow-x:hidden}
a{color:var(--teal)} a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;color:var(--navy)}
h1{font-size:clamp(1.5rem,2.4vw,2.1rem)} h2{font-size:1.15rem} h3{font-size:1rem}
p{margin:0 0 .8em}
[hidden]{display:none!important}
.muted{color:var(--muted)} .small{font-size:.875rem} .pad{padding:24px} .right{text-align:right} .nowrap{white-space:nowrap} .hide{display:none!important}

header{display:flex;align-items:center;gap:14px;padding:8px max(2vw,16px);background:var(--card);border-bottom:1px solid var(--border);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:1.1rem;color:var(--text)}
.logo{width:34px;height:34px;border-radius:10px;background:var(--teal);color:var(--teal-ink);display:grid;place-items:center;font-weight:900}
.ctx{flex:1;min-width:0;color:var(--muted);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.who{display:flex;align-items:center;gap:10px;font-size:.9rem}
nav{display:flex;gap:6px;padding:8px max(2vw,16px);overflow-x:auto;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;scrollbar-width:thin}
nav a{font:600 .9rem system-ui,sans-serif;color:var(--text);text-decoration:none;padding:7px 14px;border-radius:999px;border:1px solid var(--border);background:transparent;white-space:nowrap}
nav a[aria-current="page"]{background:var(--teal);color:var(--teal-ink);border-color:var(--teal)}
nav:empty{display:none}

main{width:min(96vw,1680px);margin:0 auto;padding:clamp(14px,2.4vw,32px) 0 90px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:clamp(14px,2vw,24px);box-shadow:var(--shadow);min-width:0;margin-bottom:16px}
.card.flat{box-shadow:none;background:var(--card2)}
.grid{display:grid;gap:clamp(14px,1.6vw,22px)}
.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))}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap} .row.between{justify-content:space-between}
.stack>*+*{margin-top:12px}

.btn,button.btn,a.btn{font:700 .95rem system-ui,sans-serif;border:0;border-radius:12px;padding:10px 16px;background:var(--teal);color:var(--teal-ink);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;margin:0}
.btn.alt,.btn.ghost{background:transparent;color:var(--teal);border:1.5px solid var(--teal)}
.btn.bad,.btn.danger{background:var(--bad);color:#fff}
.btn.sm{padding:5px 11px;font-size:.85rem;min-height:32px;border-radius:9px}
.btn:disabled{opacity:.5;cursor:default}
.btn{white-space:nowrap}
td select,td input[type=date]{padding:6px 8px;font-size:.85rem;min-width:0}
table.tk{table-layout:fixed}
table.tk th:nth-child(2){width:14%}table.tk th:nth-child(3){width:17%}table.tk th:nth-child(4){width:150px}table.tk th:nth-child(5){width:118px}table.tk th:nth-child(6){width:76px}

label.f{display:flex;flex-direction:column;gap:5px;font-weight:600;font-size:.9rem}
label.f .hint,.hint{font-weight:400;color:var(--muted);font-size:.84rem}
input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:1.5px solid var(--border);border-radius:10px;padding:9px 12px;width:100%;min-width:0}
input[type=checkbox],input[type=radio]{width:18px;height:18px;accent-color:var(--teal);padding:0}
textarea{min-height:88px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--teal) 30%,transparent)}
.ck{display:inline-flex;gap:8px;align-items:center;font-weight:500}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px}

.badge{display:inline-block;border-radius:999px;padding:2px 10px;font-size:.78rem;font-weight:700;background:var(--card2);color:var(--muted);border:1px solid var(--border);white-space:nowrap}
.badge.ok{background:color-mix(in srgb,var(--ok) 16%,var(--card));color:var(--ok);border-color:color-mix(in srgb,var(--ok) 45%,transparent)}
.badge.warn{background:color-mix(in srgb,var(--warn) 14%,var(--card));color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,transparent)}
.badge.bad{background:color-mix(in srgb,var(--bad) 12%,var(--card));color:var(--bad);border-color:color-mix(in srgb,var(--bad) 40%,transparent)}
.badge.info{background:color-mix(in srgb,var(--teal) 14%,var(--card));color:var(--text);border-color:color-mix(in srgb,var(--teal) 45%,transparent)}

table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top;overflow-wrap:anywhere}
th{color:var(--muted);font-size:.8rem;font-weight:700}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
tr.pick{cursor:pointer} tr.pick:hover td{background:var(--card2)}

.hero{padding:clamp(18px,3vw,36px);margin-bottom:18px;background:var(--card2);border:1px solid var(--border);border-radius:20px}
.hero h1{font-size:clamp(1.6rem,4vw,2.6rem);margin-bottom:.3em}
.hero p{max-width:90ch;color:var(--text)}
.timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:14px}
.step{padding:14px 16px;border:1px solid var(--border);border-radius:14px;background:var(--card);text-decoration:none;color:var(--text);display:block;box-shadow:var(--shadow)}
.step:hover{border-color:var(--teal)}
.step .n{width:28px;height:28px;border-radius:50%;background:var(--teal);color:var(--teal-ink);display:grid;place-items:center;font-weight:800;margin-bottom:8px}
.step.now{border-color:var(--teal);box-shadow:0 0 0 2px var(--teal) inset}
.step.past{opacity:.72}
.stat{text-align:center;padding:12px 8px}
.stat .n{font-size:2rem;font-weight:800;line-height:1.1;color:var(--navy)}
.stat .l{font-size:.85rem;color:var(--muted)}

.stages{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.stages a{padding:7px 13px;border:1px solid var(--border);border-radius:999px;text-decoration:none;color:var(--text);background:var(--card);font-weight:600;font-size:.9rem}
.stages a[aria-current="page"]{background:var(--teal);color:var(--teal-ink);border-color:var(--teal)}

details.rule{border:1px solid var(--border);border-radius:12px;padding:10px 14px;margin-bottom:8px;background:var(--card)}
details.rule summary{cursor:pointer;font-weight:700}
details.rule div{white-space:pre-line;margin-top:8px}

.filebox{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 12px;border:1.5px dashed var(--border);border-radius:12px}
.problems{background:color-mix(in srgb,var(--bad) 14%,var(--card));color:var(--bad);border:1px solid color-mix(in srgb,var(--bad) 40%,transparent);border-radius:12px;padding:10px 14px;font-weight:600}
.problems ul{margin:6px 0 0;padding-left:20px;font-weight:500}
.note{background:color-mix(in srgb,var(--warn) 14%,var(--card));color:var(--text);border:1px solid color-mix(in srgb,var(--warn) 40%,transparent);border-radius:12px;padding:10px 14px}

.split{display:grid;grid-template-columns:minmax(240px,340px) minmax(0,1fr);gap:16px;align-items:start}
.list{display:flex;flex-direction:column;gap:6px}
.list button{text-align:left;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:9px 12px;color:var(--text);font:inherit;cursor:pointer;margin:0}
.list button.active{border-color:var(--teal);box-shadow:0 0 0 1px var(--teal) inset}
.score-row{display:grid;grid-template-columns:minmax(0,1fr) 92px;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--border)}
.total{font-size:1.6rem;font-weight:800;color:var(--navy)}

.overlay{position:fixed;inset:0;background:rgba(5,8,15,.6);z-index:9000;display:flex;align-items:flex-start;justify-content:center;padding:3vh 2vw;overflow-y:auto}
.dialog{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:16px;width:min(560px,100%);padding:20px 22px;box-shadow:var(--shadow)}
.dialog.wide{width:min(1100px,100%)}
#toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:9500;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
#toast div{background:var(--navy);color:var(--bg);padding:10px 18px;border-radius:999px;box-shadow:var(--shadow);max-width:92vw;font-weight:600}
#toast div.bad{background:var(--bad);color:#fff}
.otp{font-size:1.5rem;letter-spacing:.4em;text-align:center}

/* nút giao diện, giống School */
#gsSet{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:max(14px,env(safe-area-inset-bottom));z-index:40;width:48px;height:48px;border-radius:50%;border:1px solid var(--border);background:var(--card);box-shadow:var(--shadow);font-size:22px;cursor:pointer;padding:0}
#gsSetBox{position:fixed;right:14px;bottom:72px;z-index:41;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:14px;width:min(320px,calc(100vw - 28px));display:grid;gap:10px}
#gsSetBox[hidden]{display:none}
#gsSetBox .opts{display:flex;flex-wrap:wrap;gap:6px}
#gsSetBox .opts button{font:600 .85rem system-ui,sans-serif;border:1px solid var(--border);background:var(--card2);color:var(--text);border-radius:999px;padding:6px 10px;cursor:pointer}
#gsSetBox .opts button[aria-pressed="true"]{background:var(--teal);color:var(--teal-ink);border-color:var(--teal)}

@media (max-width:900px){
  table.tk{table-layout:auto}
  .btn{white-space:normal;max-width:100%}
  .g2,.g3,.g4,.split{grid-template-columns:minmax(0,1fr)}
  .ctx{display:none}
  table.rt thead{display:none}
  table.rt,table.rt tbody,table.rt tr,table.rt td{display:block;width:100%}
  table.rt tr{border:1px solid var(--border);border-radius:12px;margin:0 0 10px;padding:6px 4px;background:var(--card)}
  table.rt td{border:0;padding:4px 10px;display:flex;gap:10px;justify-content:space-between;text-align:right}
  table.rt td::before{content:attr(data-l);color:var(--muted);font-size:.78rem;font-weight:700;text-align:left;flex:0 0 38%}
  table.rt td:first-child{display:block;text-align:left;font-weight:600}
  table.rt td:first-child::before{display:block;margin-bottom:2px}
}
@media (min-width:901px) and (max-width:1280px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media print{header,nav,#gsSet,#gsSetBox,#toast{display:none}}