/* Layout: a calm study tool. Landing page reads top to bottom; the app pages are one column with a thin top bar. */
:root {
  --bg: #f1f4f9;
  --surface: #ffffff;
  --sunken: #e6ebf3;
  --ink: #131a2b;
  --muted: #566078;
  --line: #d5dbe8;
  --accent: #2443c4;
  --accent-ink: #ffffff;
  --gold: #b7791f;
  --good: #17734a;
  --good-bg: #e2f4ea;
  --bad: #b02a20;
  --bad-bg: #fbe8e5;
  --opt: #b3470f;
  --mat: #b01860;
  --display: "Bricolage Grotesque", "IBM Plex Sans", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131e; --surface: #171d2b; --sunken: #222a3c; --ink: #e9edf6; --muted: #9ba5bb; --line: #2c3549;
    --accent: #93a6ff; --accent-ink: #0e131e; --gold: #f0c05a;
    --good: #62d49c; --good-bg: #12301f; --bad: #ff8f85; --bad-bg: #3a1714;
    --opt: #ffa672; --mat: #ff86ba;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 16px; line-height: 1.6; }
img { max-width: 100%; }
[hidden] { display: none !important; }
a { color: var(--accent); }
h1, h2, h3 { font-family: var(--display); text-wrap: balance; margin: 0; line-height: 1.15; }
p { margin: 0; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.muted { color: var(--muted); }
.small { font-size: 0.88rem; }

.topbar { border-bottom: 1px solid var(--line); background: var(--surface); }
.topbar .in { max-width: 880px; margin: 0 auto; padding: 10px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
.topbar .brand { font-family: var(--display); font-weight: 700; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.topbar .spacer { flex: 1; }
.topbar .who { font-size: 0.86rem; color: var(--muted); overflow-wrap: anywhere; }
.page { max-width: 880px; margin: 0 auto; padding-inline: 16px; padding-block: 28px 64px; display: flex; flex-direction: column; gap: 28px; }

.btn { display: inline-block; border: 1px solid var(--line); background: var(--surface); border-radius: 6px; padding: 9px 16px; font-weight: 500; text-decoration: none; color: var(--ink); }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.quiet { border-color: transparent; background: transparent; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; padding-inline: 4px; }
.btn:disabled { opacity: 0.55; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 20px 22px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
@media (max-width: 480px) { .card { padding: 16px 14px; } }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
.t-opt { --hue: var(--opt); } .t-mat { --hue: var(--mat); }
.kicker { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.note { border-left: 3px solid var(--gold); padding: 10px 14px; background: var(--surface); border-radius: 0 6px 6px 0; }
.err { color: var(--bad); font-size: 0.92rem; min-height: 1.3em; }
.ok { color: var(--good); font-size: 0.92rem; }

/* landing */
.hero { display: flex; flex-direction: column; gap: 14px; padding-block: 18px 6px; }
.hero h1 { font-size: clamp(2rem, 6vw, 3.1rem); font-weight: 700; letter-spacing: -0.015em; max-width: 18ch; }
.hero .sub { font-size: 1.12rem; color: var(--muted); max-width: 56ch; }
.sample { font-family: var(--mono); font-size: 0.95rem; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; display: flex; flex-direction: column; gap: 8px; max-width: 520px; }
.sample .q { font-family: var(--body); }
.sample .opts { display: flex; flex-wrap: wrap; gap: 8px; }
.sample .opts span { border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; font-family: var(--body); }
.sample .opts .yes { border-color: var(--good); background: var(--good-bg); }
.feat h3 { font-size: 1.15rem; }
.feat ul { margin: 0; padding-left: 1.1rem; display: flex; flex-direction: column; gap: 4px; }
.steps3 { margin: 0; padding-left: 1.4rem; display: flex; flex-direction: column; gap: 10px; max-width: 62ch; }
.steps3 li::marker { font-family: var(--mono); color: var(--accent); }
.price { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; }
.price b { font-family: var(--display); font-size: 2.2rem; }
.faq details { border-bottom: 1px solid var(--line); padding-block: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin-top: 6px; color: var(--muted); max-width: 64ch; }
footer.site { max-width: 880px; margin: 0 auto; padding: 14px 16px 40px; font-size: 0.84rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; border-top: 1px solid var(--line); }

/* forms */
.auth { max-width: 440px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; background: transparent; padding: 8px 12px; border-bottom: 2px solid transparent; color: var(--muted); font-weight: 600; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 0.9rem; color: var(--muted); }
.field input, .inp { padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); width: 100%; }

/* app hub */
.gamecard { border-left: 3px solid var(--hue, var(--accent)); }
.gamecard h2 { font-size: 1.25rem; }
.badge { display: inline-block; font-size: 0.78rem; border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px; color: var(--muted); }
.badge.on { border-color: var(--good); color: var(--good); }
.overlay { position: fixed; inset: 0; background: color-mix(in srgb, var(--bg) 88%, transparent); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 10; }
.overlay .card { max-width: 440px; }
.licence { text-align: center; font-size: 0.78rem; color: var(--muted); padding: 0 16px 24px; overflow-wrap: anywhere; }

/* admin */
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; white-space: nowrap; }
th { font-size: 0.8rem; color: var(--muted); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
td.email { white-space: normal; overflow-wrap: anywhere; min-width: 12rem; }
.pill { display: inline-block; border-radius: 999px; padding: 1px 9px; font-size: 0.8rem; font-weight: 600; border: 1px solid var(--line); }
.pill.pending { color: var(--gold); border-color: var(--gold); }
.pill.active { color: var(--good); border-color: var(--good); background: var(--good-bg); }
.pill.blocked, .pill.expired { color: var(--bad); border-color: var(--bad); background: var(--bad-bg); }
.stats { display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--muted); }
.stats b { color: var(--ink); font-family: var(--mono); font-weight: 500; font-size: 1.1rem; }