/* Chess Home free tools: shared design system */
.tool-page { max-width: 1040px; margin: 0 auto; padding: 8px 4px 48px; }
.tool-page h1 { margin: 4px 0 6px; }
.tool-page h2 { font-size: 18px; margin: 0 0 10px; }
.tool-page h3 { font-size: 15px; margin: 0 0 8px; }
.tool-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; justify-content: space-between; margin-bottom: 10px; }
.tool-sub { color: var(--text-soft); margin: 0 0 14px; max-width: 70ch; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-top: 18px; }
.tool-tile { display: block; color: inherit; text-decoration: none; transition: transform .12s, box-shadow .12s; }
.tool-tile:hover { transform: translateY(-2px); text-decoration: none; box-shadow: var(--shadow-2); }
.tool-tile h2 { margin: 6px 0; }
.tool-tile ul { margin: 8px 0 0; padding-left: 18px; color: var(--text-soft); font-size: 13px; }
.tool-icon { font-size: 30px; color: var(--accent); }
.tool-card { margin: 14px 0; }
.tool-more { margin-top: 28px; }
.tool-links li { margin: 6px 0; }

/* the hidden attribute must win over display rules below */
.tool-page [hidden], .modal-bg[hidden] { display: none !important; }

/* controls */
.fld { display: flex; flex-direction: column; gap: 4px; font-size: 12px; font-weight: 600; color: var(--text-muted); }
.fld > span.hint { font-weight: 400; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; margin-bottom: 12px; }
.row.tight { gap: 8px; }
.grow { flex: 1 1 200px; }
.tool-page input[type=text], .tool-page input[type=number], .tool-page input[type=date], .tool-page select, .tool-page textarea {
  padding: 8px 10px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--bg-elev); color: var(--text); font: inherit; font-weight: 400; min-width: 0; }
.tool-page input:focus, .tool-page select:focus, .tool-page textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; }
.tool-page textarea { width: 100%; min-height: 160px; font-family: ui-monospace, Menlo, monospace; font-size: 13px; resize: vertical; }
.tool-page input[type=color] { width: 44px; height: 34px; padding: 2px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--bg-elev); }
.chk { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; font-weight: 500; color: var(--text-soft); }
.btn-row, .tool-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; align-items: center; }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.seg { display: inline-flex; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); overflow: hidden; }
.seg button { border: 0; background: var(--bg-elev); padding: 6px 12px; font: inherit; font-size: 13px; cursor: pointer; color: var(--text-soft); border-right: 1px solid var(--border); }
.seg button:last-child { border-right: 0; }
.seg button.on { background: var(--accent); color: #fff; }
.seg button:hover:not(.on) { background: var(--bg-hover); }

/* tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border-strong); margin: 14px 0; overflow-x: auto; }
.tabs button { border: 0; background: none; padding: 9px 16px; font: inherit; font-weight: 600; color: var(--text-muted); cursor: pointer; border-bottom: 3px solid transparent; white-space: nowrap; }
.tabs button:hover { color: var(--text); }
.tabs button.on { color: var(--accent-hover); border-bottom-color: var(--accent); }
.tabpane[hidden] { display: none; }

/* tables */
.tbl-wrap { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.tbl th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); padding: 8px; border-bottom: 2px solid var(--border-strong); white-space: nowrap; }
.tbl td { padding: 7px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.tbl tr:hover td { background: var(--bg-hover); }
.tbl .num { text-align: right; }
.tbl .ctr { text-align: center; }
.tbl tr.podium-1 td { background: #fff7d6; }
.tbl tr.podium-2 td { background: #f1f3f5; }
.tbl tr.podium-3 td { background: #f8eadb; }
.tbl tr.out td { color: var(--text-muted); text-decoration: line-through; }
.tbl input[type=text], .tbl input[type=number] { padding: 4px 6px; width: 100%; }

/* misc */
.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 700; background: var(--accent-soft); color: var(--accent-hover); }
.badge.warn { background: #fff0d6; color: #8a5a00; }
.badge.bad { background: #fbe3e3; color: var(--danger); }
.badge.gray { background: var(--bg-elev-2); color: var(--text-muted); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin: 10px 0; }
.stat { background: var(--bg-elev-2); border-radius: var(--radius-sm); padding: 10px 12px; }
.stat b { display: block; font-size: 24px; line-height: 1.2; color: var(--text); }
.stat span { font-size: 12px; color: var(--text-muted); }
.stat.pos b { color: var(--success); } .stat.neg b { color: var(--danger); }
.tool-status, .note { font-size: 13px; color: var(--text-muted); min-height: 18px; }
.notice { padding: 10px 14px; border-radius: var(--radius-sm); background: var(--accent-soft); font-size: 14px; margin: 10px 0; }
.notice.warn { background: #fff0d6; } .notice.bad { background: #fbe3e3; }
.empty { text-align: center; padding: 28px 10px; color: var(--text-muted); }
.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { border: 1px solid var(--border-strong); background: var(--bg-elev); border-radius: 99px; padding: 4px 12px; font-size: 13px; cursor: pointer; font: inherit; font-size: 13px; }
.pill.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.pill.done:not(.on) { border-color: var(--accent); color: var(--accent-hover); }
code.copy { background: var(--bg-elev-2); padding: 3px 7px; border-radius: 4px; font-size: 12px; word-break: break-all; }
.kbd { font: 11px ui-monospace, monospace; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 4px; padding: 0 5px; background: var(--bg-elev); }
.toast-host { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast { background: #222; color: #fff; padding: 9px 16px; border-radius: 8px; font-size: 14px; box-shadow: var(--shadow-2); animation: tin .2s; }
.toast.bad { background: var(--danger); }
@keyframes tin { from { opacity: 0; transform: translateY(8px); } }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 9000; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal { background: var(--bg-elev); border-radius: var(--radius); padding: 18px; max-width: 460px; width: 100%; box-shadow: var(--shadow-2); }
.modal h3 { margin-top: 0; }
.signin-nudge { font-size: 13px; color: var(--text-muted); }

/* tournament */
.res-seg button { padding: 4px 9px; font-size: 12px; }
.pairing-cell { font-weight: 600; }
.pairing-cell small { font-weight: 400; color: var(--text-muted); }
.xt td, .xt th { text-align: center; padding: 6px 5px; white-space: nowrap; }
.xt td.name, .xt th.name { text-align: left; }
.xt .w { background: #fff; } .xt .b { background: #e9e9e9; }

/* PGN */
.drop { border: 2px dashed var(--border-strong); border-radius: var(--radius); padding: 18px; text-align: center; color: var(--text-muted); transition: .15s; }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.opt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.opt-grid fieldset { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px 10px; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.opt-grid legend { font-size: 12px; font-weight: 700; color: var(--text-muted); padding: 0 6px; }
.bars { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.bars div { display: flex; gap: 8px; align-items: center; }
.bars i { display: block; height: 8px; background: var(--accent); border-radius: 4px; min-width: 2px; }
.fen-mono { font: 12px ui-monospace, Menlo, monospace; word-break: break-all; }

/* clock */
.clock-app { max-width: 880px; margin: 0 auto; }
.clock-app.fs { background: var(--bg); padding: 12px; max-width: none; position: fixed; inset: 0; z-index: 8000; overflow: auto; }
.clock-faces { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 10px 0; }
.clock-faces.stack { grid-template-columns: 1fr; }
.face { position: relative; border: 0; border-radius: 14px; padding: 18px 10px 14px; background: var(--bg-elev-2); color: var(--text); cursor: pointer; text-align: center; transition: background .15s; min-height: 200px; display: flex; flex-direction: column; justify-content: center; }
.face .nm { font-size: 14px; font-weight: 700; opacity: .75; }
.face .t { font-size: clamp(54px, 13vw, 128px); font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1.05; }
.face .mv { font-size: 13px; opacity: .75; margin-top: 4px; }
.face.rot { transform: rotate(180deg); }
.face.on { background: var(--accent); color: #fff; }
.face.low.on { background: #c9741a; }
.face.low:not(.on) .t { color: #c9741a; }
.face.crit.on { background: var(--danger); animation: pulse .8s infinite alternate; }
.face.flag { background: var(--danger); color: #fff; }
.face:disabled { cursor: default; }
@keyframes pulse { to { filter: brightness(1.2); } }
.stage-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; margin-bottom: 8px; }
.stage-row .fld { width: 110px; }
.moves-log { max-height: 180px; overflow: auto; font-size: 13px; font-variant-numeric: tabular-nums; columns: 2; }

/* diagram */
.studio { display: grid; grid-template-columns: minmax(300px, 520px) 1fr; gap: 20px; align-items: start; }
@media (max-width: 820px) { .studio { grid-template-columns: 1fr; } }
.board-wrap { position: relative; width: 100%; max-width: 520px; user-select: none; touch-action: none; }
.board-wrap canvas { width: 100%; height: auto; display: block; border-radius: 6px; cursor: crosshair; box-shadow: var(--shadow-1); }
.palette { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; max-width: 520px; margin: 8px 0; }
.palette button { border: 2px solid transparent; background: var(--bg-elev-2); border-radius: 8px; padding: 2px; cursor: pointer; aspect-ratio: 1; }
.palette button.on { border-color: var(--accent); background: var(--accent-soft); }
.palette img { width: 100%; height: 100%; object-fit: contain; display: block; pointer-events: none; }
.swatch { width: 26px; height: 26px; border-radius: 50%; border: 3px solid transparent; cursor: pointer; padding: 0; }
.swatch.on { border-color: var(--text); }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.gallery figure { margin: 0; background: var(--bg-elev-2); border-radius: var(--radius-sm); padding: 6px; font-size: 12px; }
.gallery img { width: 100%; display: block; border-radius: 4px; }
@media print { .site-header, .site-nav-secondary, .tool-more, .tool-actions, .btn-row, .no-print, .tabs, footer { display: none !important; } .tabpane[hidden].print-ok { display: block !important; } }