/* MEIKYO Mentorship - shared theme
   Dark by default, light via [data-theme="light"]. Neutral grays only. */

:root {
  --bg:        #0d0d0e;
  --bg-raise:  #151517;
  --bg-sink:   #09090a;
  --line:      #26262a;
  --line-soft: #1c1c1f;
  --ink:       #ececee;
  --ink-mid:   #a3a3a8;
  --ink-dim:   #6e6e75;
  --accent:    #e8e8ea;
  --ok:        #7fbf8f;
  --warn:      #d6b478;
  --bad:       #d68787;
  --focus:     #5a5a62;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --wrap: 860px;
  --wrap-wide: 1180px;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg:        #fbfbfa;
  --bg-raise:  #ffffff;
  --bg-sink:   #f2f2f0;
  --line:      #dcdcd8;
  --line-soft: #e9e9e6;
  --ink:       #1a1a1b;
  --ink-mid:   #5c5c60;
  --ink-dim:   #8b8b90;
  --accent:    #1a1a1b;
  --ok:        #2f6b40;
  --warn:      #86612a;
  --bad:       #973a3a;
  --focus:     #a8a8ae;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
a:hover { border-bottom-color: var(--ink-mid); }
a.plain, a.plain:hover { border-bottom: none; }

::selection { background: var(--ink); color: var(--bg); }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* ---------- layout ---------- */

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: 20px; }
.wrap.wide { max-width: var(--wrap-wide); }

.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky; top: 0; z-index: 40;
}
.topbar-in {
  display: flex; align-items: center; gap: 20px;
  padding-block: 14px;
}
.brand {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: .04em;
  border: none;
  white-space: nowrap;
}
.brand .jp { color: var(--ink-dim); margin-left: 6px; font-size: 14px; }
.nav { display: flex; gap: 18px; flex-wrap: wrap; margin-left: auto; align-items: center; }
.nav a {
  font-size: 13px; letter-spacing: .04em; text-transform: uppercase;
  color: var(--ink-mid); border: none; padding-block: 4px;
}
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -1px 0 var(--ink); }

.iconbtn {
  background: none; border: 1px solid var(--line); color: var(--ink-mid);
  width: 30px; height: 30px; border-radius: 3px; cursor: pointer;
  font-size: 13px; line-height: 1; display: grid; place-items: center;
  font-family: var(--sans);
}
.iconbtn:hover { color: var(--ink); border-color: var(--ink-dim); }

main { padding-block: 40px 90px; }

/* ---------- type ---------- */

h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -.01em; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 10px; }
h2 { font-size: 21px; margin: 40px 0 12px; }
h3 { font-size: 17px; margin: 26px 0 8px; }

.eyebrow {
  font-family: var(--sans); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink-dim); margin: 0 0 10px;
}
.lede { color: var(--ink-mid); font-size: 16px; margin: 0 0 8px; max-width: 62ch; }
.muted { color: var(--ink-mid); }
.dim { color: var(--ink-dim); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 13px; }

.rule { border: 0; border-top: 1px solid var(--line); margin: 34px 0; }

/* ---------- cards, lists ---------- */

.panel {
  border: 1px solid var(--line);
  background: var(--bg-raise);
  border-radius: 4px;
  padding: 20px;
}
.panel + .panel { margin-top: 14px; }

.rows { border-top: 1px solid var(--line); }
.row {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-soft);
}
.row:hover { background: var(--bg-raise); }
.row .grow { flex: 1; min-width: 0; }
.row .num {
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim);
  width: 26px; flex: none; text-align: right;
}
.row .title { display: block; color: var(--ink); border: none; }
.row .sub { font-size: 12.5px; color: var(--ink-dim); }
.row.locked .title, .row.locked .sub { color: var(--ink-dim); }
.row.locked { cursor: not-allowed; }

.tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-mid);
  border: 1px solid var(--line); border-radius: 3px;
  padding: 2px 7px; white-space: nowrap;
}
.tag.ok   { color: var(--ok);   border-color: color-mix(in srgb, var(--ok) 45%, var(--line)); }
.tag.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }
.tag.bad  { color: var(--bad);  border-color: color-mix(in srgb, var(--bad) 45%, var(--line)); }

.grid { display: grid; gap: 14px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.stat { border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px; background: var(--bg-raise); }
.stat .k { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-dim); }
.stat .v { font-family: var(--serif); font-size: 26px; line-height: 1.2; margin-top: 4px; }

.meter { height: 3px; background: var(--bg-sink); border-radius: 2px; overflow: hidden; }
.meter > i { display: block; height: 100%; background: var(--ink-mid); }

/* ---------- forms ---------- */

label { display: block; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-dim); margin-bottom: 6px; }

input[type=text], input[type=password], input[type=date], input[type=number], select, textarea {
  width: 100%; background: var(--bg-sink); color: var(--ink);
  border: 1px solid var(--line); border-radius: 3px;
  padding: 10px 12px; font-family: var(--sans); font-size: 14.5px;
}
textarea { min-height: 160px; resize: vertical; line-height: 1.65; }
input:focus, textarea:focus, select:focus { border-color: var(--ink-dim); outline: none; }
input::placeholder, textarea::placeholder { color: var(--ink-dim); }

.field + .field { margin-top: 16px; }

.btn {
  display: inline-block; background: var(--ink); color: var(--bg);
  border: 1px solid var(--ink); border-radius: 3px;
  padding: 9px 18px; font-size: 13.5px; letter-spacing: .03em;
  cursor: pointer; font-family: var(--sans);
}
.btn:hover { opacity: .88; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn.ghost { background: none; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink-dim); opacity: 1; }
.btn.small { padding: 6px 12px; font-size: 12.5px; }

.btnrow { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; }

.note { font-size: 13px; color: var(--ink-dim); }
.err { color: var(--bad); font-size: 13.5px; min-height: 20px; }
.okmsg { color: var(--ok); font-size: 13.5px; min-height: 20px; }

/* ---------- video ---------- */

.video { position: relative; aspect-ratio: 16/9; max-width: 100%; background: var(--bg-sink); border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------- quiz ---------- */

.q { border-top: 1px solid var(--line); padding: 18px 0; }
.q:first-child { border-top: none; }
.q .qtext { margin: 0 0 12px; }
.opts { display: grid; gap: 8px; }
.opt {
  display: flex; gap: 10px; align-items: flex-start;
  border: 1px solid var(--line); border-radius: 3px; padding: 10px 12px;
  cursor: pointer; background: var(--bg-raise);
}
.opt:hover { border-color: var(--ink-dim); }
.opt input { margin: 3px 0 0; accent-color: var(--ink-mid); width: auto; }
.opt.wrong { border-color: color-mix(in srgb, var(--bad) 55%, var(--line)); }
.opt.right { border-color: color-mix(in srgb, var(--ok) 55%, var(--line)); }
.why { font-size: 13px; color: var(--ink-mid); margin-top: 8px; padding-left: 2px; }

/* ---------- tables ---------- */

.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
th { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim); background: var(--bg-sink); }
tbody tr:hover { background: var(--bg-raise); }
td.wrapcell { white-space: normal; min-width: 240px; }

/* ---------- misc ---------- */

.center { max-width: 380px; margin: 12vh auto 0; }
.stack > * + * { margin-top: 14px; }
.inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; gap: 16px; align-items: baseline; justify-content: space-between; }
.hide { display: none !important; }
.spin { color: var(--ink-dim); font-size: 13px; }

footer.foot { border-top: 1px solid var(--line); padding-block: 22px 40px; color: var(--ink-dim); font-size: 12.5px; }

@media (max-width: 620px) {
  h1 { font-size: 25px; }
  .topbar-in { gap: 12px; }
  .nav { gap: 12px; width: 100%; margin-left: 0; order: 3; }
  .brand { font-size: 16px; }
  main { padding-block: 28px 60px; }
}