:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface-1: #fcfcfb;
  --surface-2: #f0efec;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6;
  --accent: #2a78d6;
  --good-text: #006300;
  --critical: #d03b3b;
  --warning: #fab219;
  --badge-supporter: #2a78d6;
  --badge-diamond: #4a3aa7;
  --radius: 8px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface-1: #1a1a19;
    --surface-2: #262624;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-1: #3987e5;
    --accent: #3987e5;
    --good-text: #0ca30c;
    --critical: #e66767;
    --badge-supporter: #3987e5;
    --badge-diamond: #9085e9;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--text-primary); line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.6rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 32px 0 12px; }
.muted { color: var(--text-muted); }
.secondary { color: var(--text-secondary); }
.num { font-variant-numeric: tabular-nums; text-align: right; }

/* nav */
.topnav { background: var(--surface-1); border-bottom: 1px solid var(--border); }
.topnav .inner { max-width: 1100px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.topnav .brand { font-weight: 800; font-size: 1.15rem; color: var(--text-primary); letter-spacing: -0.02em; }
.topnav .brand span { color: var(--critical); }
.topnav a.active { color: var(--text-primary); font-weight: 600; }
.topnav .spacer { flex: 1; }
.topnav select { font-size: 0.8rem; }

/* surfaces */
.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 16px 0; }

/* segmented control */
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.segmented button { border: 0; background: var(--surface-1); color: var(--text-secondary); padding: 6px 14px; cursor: pointer; font: inherit; }
.segmented button[aria-pressed="true"] { background: var(--accent); color: #fff; }

/* forms */
input, select, textarea, button { font: inherit; color: inherit; }
input[type=text], input[type=date], input[type=search], input[type=email], input[type=url], select, textarea {
  background: var(--surface-1); border: 1px solid var(--axis); border-radius: 6px; padding: 6px 10px;
}
textarea { width: 100%; min-height: 240px; font-family: ui-monospace, Consolas, monospace; font-size: 0.85rem; }
button.primary, button.secondary, a.button {
  border-radius: 6px; padding: 7px 16px; cursor: pointer; border: 1px solid var(--accent); display: inline-block;
}
button.primary { background: var(--accent); color: #fff; }
button.secondary, a.button { background: transparent; color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--text-secondary); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 12px; }

/* tables */
table { width: 100%; border-collapse: collapse; background: var(--surface-1); }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--grid); text-align: left; }
th { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
tbody tr:hover { background: var(--surface-2); }
th button.sort { all: unset; cursor: pointer; display: inline-flex; gap: 4px; align-items: center; }
th button.sort:hover, th[aria-sort="ascending"] button.sort, th[aria-sort="descending"] button.sort { color: var(--text-primary); }
th button.sort:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
th button.sort .arrow { font-size: 0.65rem; min-width: 0.7em; }
.table-wrap { border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }

/* stat tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.tile { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.tile .label { font-size: 0.8rem; color: var(--text-secondary); }
.tile .value { font-size: 1.5rem; font-weight: 650; }
.tile .sub { font-size: 0.8rem; color: var(--text-muted); }

/* results */
.res-W { color: var(--good-text); font-weight: 600; }
.res-L { color: var(--critical); font-weight: 600; }
.res-D, .res-BYE { color: var(--text-secondary); font-weight: 600; }
.delta-pos { color: var(--good-text); }
.delta-neg { color: var(--critical); }
.deck { font-size: 0.8rem; color: var(--text-secondary); font-style: italic; margin-left: 6px; font-weight: normal; }
details.tournament .deck-edit { padding: 8px 14px; border-top: 1px solid var(--grid); }
details.tournament .deck-edit label { display: flex; gap: 10px; align-items: center; font-size: 0.85rem; color: var(--text-secondary); }
details.tournament .deck-edit .deck-input { max-width: 320px; }
.deck-input { width: 100%; min-width: 160px; }
.deck-status { font-size: 0.8rem; margin-left: 6px; }
.elo-change { font-size: 0.85rem; margin-left: 6px; font-variant-numeric: tabular-nums; }

/* badges */
.badge { display: inline-block; font-size: 0.7rem; font-weight: 700; padding: 1px 7px; border-radius: 999px; vertical-align: middle; margin-left: 6px; color: #fff; }
.badge.supporter { background: var(--badge-supporter); }
.badge.diamond { background: var(--badge-diamond); }
.badge.type-rel { background: var(--text-primary); color: var(--page); }
.badge.type-casual { background: var(--surface-2); color: var(--text-secondary); border: 1px solid var(--border); }
.badge.format { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.hidden-name { font-style: italic; color: var(--text-muted); }

/* chart */
.chart-card { position: relative; height: 320px; }

/* messages */
.msg { padding: 10px 14px; border-radius: 6px; margin: 12px 0; border: 1px solid var(--border); background: var(--surface-2); }
.msg.error { border-color: var(--critical); }
.msg.error::before { content: "⚠ "; color: var(--critical); }
.msg.ok::before { content: "✓ "; color: var(--good-text); }

details.provisional { margin-top: 32px; }
details.provisional > summary { cursor: pointer; margin-bottom: 12px; }
details.provisional > summary h2 { display: inline; margin: 0; }
details.tournament { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; }
details.tournament summary { padding: 10px 14px; cursor: pointer; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
details.tournament summary .name { font-weight: 600; flex: 1; min-width: 180px; }
details.tournament table { border-top: 1px solid var(--grid); }

.markdown h2 { margin-top: 16px; }
.formula { font-family: "Cambria Math", "STIX Two Math", serif; font-size: 1.2rem; padding: 12px 16px; background: var(--surface-2); border-radius: 6px; display: inline-block; }
footer { text-align: center; color: var(--text-muted); font-size: 0.8rem; padding: 24px; }
pre { background: var(--surface-2); padding: 10px 12px; border-radius: 6px; overflow-x: auto; font-size: 0.85rem; }
.tile .value.name { font-size: 1.05rem; padding-top: 6px; }

/* layout with the "Upcoming tournaments" sidebar (stacks below on narrow screens) */
.with-aside { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 28px; align-items: start; }
@media (max-width: 900px) { .with-aside { grid-template-columns: minmax(0, 1fr); } }
aside.upcoming { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; position: sticky; top: 16px; }
aside.upcoming h2 { margin: 0 0 10px; font-size: 1rem; }
ul.events { list-style: none; margin: 0; padding: 0; }
li.event { padding: 8px 0; border-bottom: 1px solid var(--grid); }
li.event:last-child { border-bottom: 0; }
.event-date { font-size: 0.8rem; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.event-name { font-weight: 600; }
.event-meta .badge:first-child { margin-left: 0; }
.event-meta { font-size: 0.8rem; }
button.link-button { all: unset; cursor: pointer; color: var(--critical); font-size: 0.75rem; }
details.post-event { margin-top: 12px; }
details.post-event summary { cursor: pointer; color: var(--accent); }
details.post-event form { display: grid; gap: 8px; margin-top: 8px; }
.small { font-size: 0.8rem; }

/* membership */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 16px 0; }
.plan h2 { margin: 0; }
.plan .price { font-size: 1.4rem; font-weight: 700; margin: 4px 0 8px; }
.plan ul { padding-left: 18px; margin: 0 0 14px; }
.plan-supporter { border-color: var(--badge-supporter); }
.plan-diamond { border-color: var(--badge-diamond); border-width: 2px; }
a.button.primary { background: var(--accent); color: #fff; text-decoration: none; }

/* Supporter flair */
.badge.flair { font-weight: 600; }
.flair-blue { background: #2a78d6; }
.flair-green { background: #1c8a3a; }
.flair-purple { background: #6d4bc4; }
.flair-orange { background: #c96a0c; }
.flair-red { background: #c43c3c; }
.flair-gray { background: #6b6a66; }

/* deck picker and Diamond private notes */
.deck-fields { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; }
input.note-input { width: 100%; min-width: 140px; font-size: 0.85rem; padding: 3px 6px; background: var(--surface-1); border: 1px solid var(--grid); border-radius: 4px; }
input.note-input.saved { border-color: var(--good-text); }
input.note-input.failed { border-color: var(--critical); }
button.secondary.danger { border-color: var(--critical); color: var(--critical); }