/* static/style.css */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#e5e7eb;
  --accent:#d10000;
  --shadow:0 12px 40px rgba(15, 23, 42, .08);
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color:var(--text); background:var(--bg); }

.wrap{ width:min(1100px, 92vw); margin:0 auto; }

.site-header{
  background:var(--card);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:5;
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}
.brand{ display:flex; gap:10px; align-items:center; text-decoration:none; color:var(--text); font-weight:900; }
.brand-mark{
  width:34px; height:34px; border-radius:12px;
  display:grid; place-items:center;
  background:var(--accent); color:white; font-weight:900;
}
.topnav{ display:flex; gap:18px; }
.topnav a{ text-decoration:none; color:var(--muted); font-weight:800; }
.topnav a:hover{ color:var(--text); }

.site-footer{
  margin-top:40px; padding:18px 0;
  border-top:1px solid var(--line);
  background:var(--card);
}
.footer-inner{ color:var(--muted); font-weight:700; }

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:18px;
  margin-top:18px;
}

.top-bar{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.top-bar h1{ margin:0; font-size:34px; letter-spacing:-0.5px; }
.meta{ margin-top:6px; color:var(--muted); font-weight:700; }

.nav-buttons{ display:flex; gap:10px; flex-wrap:wrap; align-items:center; }

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  text-decoration:none;
  color:var(--text);
  font-weight:900;
}
.btn:hover{ filter:brightness(.98); }
.btn-primary{
  background:var(--accent);
  color:white;
  border-color:transparent;
}
.btn-danger{
  background:rgba(209,0,0,.08);
  border-color:rgba(209,0,0,.35);
  color:var(--accent);
}

.layout-2col{
  display:grid;
  grid-template-columns: 1fr 1.35fr;
  gap:16px;
  margin-top:14px;
}
.side-panel{
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  background:#fff;
}
.side-panel h2{ margin:0 0 10px 0; }
.side-panel h3{ margin:18px 0 8px; }
.side-panel p{ color:var(--text); line-height:1.5; }
.bullets{ margin:8px 0 0 18px; color:var(--muted); font-weight:700; }
.bullets li{ margin:6px 0; }

.info-box{
  margin-top:14px;
  background:#f8fafc;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
  color:var(--muted);
  font-weight:700;
}
.info-box a{ color:var(--accent); text-decoration:none; font-weight:900; }

.game-panel{
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  background:#fff;
  min-height: 420px;
}

.game-info{
  display:flex; gap:10px; align-items:center; flex-wrap:wrap;
  margin-bottom:12px;
}
.pill{
  display:inline-flex; gap:8px; align-items:center;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#f8fafc;
  font-weight:900;
  color:var(--text);
}

.center-panel{ margin-top:14px; }
.size-bar{
  display:flex; align-items:center; gap:12px; justify-content:space-between; flex-wrap:wrap;
  margin-bottom:12px;
}
.size-bar form{ display:flex; align-items:center; gap:10px; }
.size-bar select{
  padding:10px 12px; border-radius:12px; border:1px solid var(--line);
  font-weight:900;
}

.more-block{ margin-top:14px; }
.actions{ display:flex; gap:10px; flex-wrap:wrap; }

/* ---- Board ---- */
.board{
  --cell: 34px;
  display:grid;
  grid-template-columns: repeat(9, var(--cell));
  grid-template-rows: repeat(9, var(--cell));
  gap:0;
  justify-content:center;
  align-content:start;
  margin: 10px 0 14px;
}

.cell2{
  width:var(--cell);
  height:var(--cell);
  border:1px solid #9ca3af;
  display:grid;
  place-items:center;
  font-weight:900;
  font-size: calc(var(--cell) * 0.52);
  user-select:none;
  cursor:pointer;
  background:#fff;
}
.cell2.given{ color:#0f172a; }
.cell2.selected{ outline:3px solid rgba(209,0,0,.55); outline-offset:-3px; }
.cell2.rc{ background:rgba(2,132,199,.08); }          /* row/col highlight */
.cell2.same{ background:rgba(234,179,8,.18); }        /* same numbers */
.cell2.bad{ color:var(--accent); }                    /* wrong entries */

.cell2.thick-right{ border-right:3px solid #111827; }
.cell2.thick-bottom{ border-bottom:3px solid #111827; }

.board.locked{ opacity:.55; pointer-events:none; }

/* ---- Pad ---- */
.pad{ display:grid; gap:10px; justify-content:center; }
.pad-row{ display:flex; gap:10px; flex-wrap:wrap; justify-content:center; }
.pad-btn{
  width:44px; height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:900;
  cursor:pointer;
}
.pad-btn:hover{ filter:brightness(.98); }
.pad-wide{ width:108px; }

@media (max-width: 920px){
  .layout-2col{ grid-template-columns: 1fr; }
  .top-bar h1{ font-size:28px; }
}
/* --- Solution page --- */
.solution-wrap{
  display:grid;
  grid-template-columns: 1fr 320px;
  gap:16px;
  margin-top:14px;
  align-items:start;
}

.solution-board{
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  background:#fff;
}

.solution-note{
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
  background:#fff;
  color:var(--muted);
  font-weight:700;
}

.solution-note h3{
  margin:0 0 8px 0;
  color:var(--text);
}

/* Oplossing-grid netjes en consistent met sudoku */
.solution-board table.solution-grid{
  border-collapse: collapse;
  margin: 0 auto;
}

.solution-board table.solution-grid td{
  width: 40px;
  height: 40px;
  text-align:center;
  border:1px solid #9ca3af;
  font-size: 20px;
  font-weight: 900;
  background:#fff;
}

.solution-board table.solution-grid tr:nth-child(3) td,
.solution-board table.solution-grid tr:nth-child(6) td{
  border-bottom:3px solid #111827;
}

.solution-board table.solution-grid td:nth-child(3),
.solution-board table.solution-grid td:nth-child(6){
  border-right:3px solid #111827;
}

@media (max-width: 920px){
  .solution-wrap{ grid-template-columns: 1fr; }
}
/* --- Archive styling --- */
.list{
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list-row{
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.list-title{
  font-weight: 900;
  color: var(--text);
}

.list-actions{
  justify-self: end;
}

.grid-links{
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
}

.day-link{
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}

.day-link:hover{
  border-color: #cbd5e1;
  transform: translateY(-1px);
}
/* Form inputs laten meeliften met site-font */
input,
select,
textarea,
button {
  font-family: inherit;
}