/* ============================================================================
   account.css  -  the sign-in, create-account and reserved-area pages
   ============================================================================
   The tokens are the fieldbook's, copied rather than imported: tutorial.html is
   deliberately one self-contained file, so there is no shared stylesheet for it
   to import. Two copies of a palette is a real cost; the alternative was to
   break the "works as a single file" property, which is the more expensive one.
   If these ever drift, tutorial.html is the source of truth.

   Light is the bare :root. Dark redefines tokens only - twice, because
   prefers-color-scheme handles the system default and [data-theme] handles an
   explicit choice, and a rule that only exists inside a media query cannot be
   overridden by a toggle.
   ========================================================================= */

:root{
  --bg:#F5F4F1;
  --surface:#FFFFFF;
  --surface-2:#EAE8E3;
  --ink:#23262B;
  --ink-soft:#585F68;
  --ink-faint:#8A9199;
  --rule:#E2DFDA;
  --rule-strong:#CBC6BF;
  --accent:#2E6E9E;
  --accent-ink:#FFFFFF;
  --accent-wash:#E6EEF5;
  --runtime:#2E7267;
  --runtime-wash:#E1EEEA;
  --danger:#A33A32;
  --danger-wash:#F6E6E4;
  --shadow:0 1px 2px rgba(30,34,40,.05), 0 8px 24px rgba(30,34,40,.07);
  --maxw:1080px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#12151A;
    --surface:#1A1E25;
    --surface-2:#242A33;
    --ink:#E6E9ED;
    --ink-soft:#A3AAB4;
    --ink-faint:#747C87;
    --rule:#262C35;
    --rule-strong:#3A4250;
    --accent:#6FA8DC;
    --accent-ink:#0F1720;
    --accent-wash:#1B2836;
    --runtime:#6FBFA8;
    --runtime-wash:#172420;
    --danger:#E08078;
    --danger-wash:#2A1A19;
    --shadow:0 1px 2px rgba(0,0,0,.45), 0 8px 24px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  --bg:#12151A;
  --surface:#1A1E25;
  --surface-2:#242A33;
  --ink:#E6E9ED;
  --ink-soft:#A3AAB4;
  --ink-faint:#747C87;
  --rule:#262C35;
  --rule-strong:#3A4250;
  --accent:#6FA8DC;
  --accent-ink:#0F1720;
  --accent-wash:#1B2836;
  --runtime:#6FBFA8;
  --runtime-wash:#172420;
  --danger:#E08078;
  --danger-wash:#2A1A19;
  --shadow:0 1px 2px rgba(0,0,0,.45), 0 8px 24px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:"IBM Plex Serif",Georgia,serif;margin:0;line-height:1.25;text-wrap:balance}
code,.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
[hidden]{display:none!important}

/* ---------- topbar, shared by all three pages ---------- */
.topbar{background:var(--surface);border-bottom:1px solid var(--rule)}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 22px;
  display:flex;align-items:center;gap:13px;min-height:58px;
}
.brand{display:flex;align-items:baseline;gap:9px;flex:none;text-decoration:none;color:inherit}
.brand-mark{
  font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:600;
  letter-spacing:.14em;color:var(--accent-ink);background:var(--accent);
  padding:3px 7px;border-radius:2px;
}
.brand-name{font-family:"IBM Plex Serif",serif;font-weight:600;font-size:15px;letter-spacing:-.01em}
.crumb{
  font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--ink-faint);
  letter-spacing:.05em;margin-right:auto;padding-left:13px;
  border-left:1px solid var(--rule);min-width:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
@media(max-width:620px){.crumb{display:none}.topbar-inner{gap:10px}.brand{margin-right:auto}}

/* ---------- the narrow, centred column the two forms live in ---------- */
.auth-wrap{max-width:452px;margin:0 auto;padding:56px 22px 80px}
@media(max-width:620px){.auth-wrap{padding:34px 18px 56px}}

.eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-faint);margin:0 0 9px;
}
.auth-wrap h1{font-size:31px;letter-spacing:-.015em;margin-bottom:9px}
.lede{color:var(--ink-soft);margin:0 0 26px;font-size:15px}

.card{
  background:var(--surface);border:1px solid var(--rule);border-radius:5px;
  box-shadow:var(--shadow);padding:26px 24px;
}

/* ---------- fields ---------- */
.field{display:block;margin-bottom:17px}
.field > span{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:11px;
  letter-spacing:.09em;text-transform:uppercase;color:var(--ink-soft);
  margin-bottom:6px;
}
.field > span .opt{text-transform:none;letter-spacing:0;color:var(--ink-faint)}
.field input{
  width:100%;padding:10px 12px;font:inherit;font-size:15px;
  color:var(--ink);background:var(--bg);
  border:1px solid var(--rule-strong);border-radius:3px;
}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}
.field input[aria-invalid="true"]{border-color:var(--danger)}
.hint{margin:6px 0 0;font-size:12.5px;color:var(--ink-faint);line-height:1.55}
.hint.bad{color:var(--danger)}

/* ---------- buttons ---------- */
.btn{
  font:inherit;font-size:14.5px;padding:9px 16px;cursor:pointer;
  background:var(--surface);color:var(--ink);
  border:1px solid var(--rule-strong);border-radius:3px;
}
.btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.btn:disabled{opacity:.55;cursor:default}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:500}
.btn.primary:hover:not(:disabled){filter:brightness(1.08);color:var(--accent-ink)}
.btn.wide{width:100%;padding:11px 16px;font-size:15px}
.btn.danger{color:var(--danger);border-color:var(--danger)}
.btn.danger:hover:not(:disabled){background:var(--danger-wash);color:var(--danger)}
.btn.link{
  background:none;border:none;padding:0;color:var(--accent);
  text-decoration:underline;text-underline-offset:2px;font-size:14px;cursor:pointer;
}

.alt{
  margin:16px 0 0;padding-top:16px;border-top:1px solid var(--rule);
  font-size:14px;color:var(--ink-soft);text-align:center;
}

/* ---------- the status strip above the form ---------- */
.msg{
  border-left:3px solid var(--rule-strong);
  background:var(--surface-2);
  padding:10px 13px;margin:0 0 18px;font-size:14px;line-height:1.6;border-radius:0 3px 3px 0;
}
.msg.bad{border-left-color:var(--danger);background:var(--danger-wash);color:var(--ink)}
.msg.good{border-left-color:var(--runtime);background:var(--runtime-wash)}
.msg.info{border-left-color:var(--accent);background:var(--accent-wash)}
.msg b{font-weight:600}

/* ---------- the didactic footnote under each form ---------- */
.why{margin:26px 0 0;border-top:1px solid var(--rule);padding-top:18px}
.why h2{
  font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 10px;
}
.why ul{margin:0;padding-left:18px;color:var(--ink-soft);font-size:13.5px;line-height:1.65}
.why li{margin-bottom:7px}
.why code{font-size:12.5px;background:var(--surface-2);padding:1px 4px;border-radius:2px}

/* ============================================================================
   RESERVED AREA
   ========================================================================= */
.res-wrap{max-width:var(--maxw);margin:0 auto;padding:34px 22px 80px}
@media(max-width:620px){.res-wrap{padding:24px 18px 56px}}

.res-head{display:flex;align-items:flex-start;gap:20px;flex-wrap:wrap;margin-bottom:30px}
.res-head h1{font-size:29px;letter-spacing:-.015em}
.res-id{flex:1 1 260px;min-width:0}
.res-mail{
  font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--ink-soft);
  margin:5px 0 0;word-break:break-all;
}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}
.chip{
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;padding:3px 8px;border-radius:2px;
  background:var(--accent-wash);color:var(--accent);
}
.chip.quiet{background:var(--surface-2);color:var(--ink-soft)}

.section{margin-bottom:34px}
.section > h2{
  font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);
  margin:0 0 13px;padding-bottom:8px;border-bottom:1px solid var(--rule);
}

/* stat tiles */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:12px}
.stat{
  background:var(--surface);border:1px solid var(--rule);border-radius:4px;
  padding:14px 15px;
}
.stat .n{font-family:"IBM Plex Serif",serif;font-size:27px;font-weight:600;line-height:1.1;display:block}
.stat .l{
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-faint);display:block;margin-top:5px;
}
.stat.accent .n{color:var(--accent)}
.stat.runtime .n{color:var(--runtime)}

/* the mastery ring */
.ring-row{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.ring{flex:none;width:106px;height:106px;transform:rotate(-90deg)}
.ring .track{fill:none;stroke:var(--surface-2);stroke-width:9}
.ring .fill{fill:none;stroke:var(--accent);stroke-width:9;stroke-linecap:round}
.ring-num{font-family:"IBM Plex Serif",serif;font-size:34px;font-weight:600;line-height:1}
.ring-cap{color:var(--ink-soft);font-size:14px;margin-top:5px;max-width:52ch}

/* The study-day calendar: weeks run left to right, Monday at the top.
   A grid rather than a wrapping flex row - a row of 84 squares that wraps
   breaks at whatever column the viewport allows, and a calendar that starts a
   new line mid-week is not a calendar. */
.days{
  display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,11px);
  gap:3px;justify-content:start;margin-top:4px;
}
.day{width:11px;height:11px;border-radius:2px;background:var(--surface-2);border:1px solid var(--rule)}
.day.on{background:var(--runtime);border-color:var(--runtime)}

/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-faint);font-weight:600;
  text-align:left;padding:0 10px 8px 0;border-bottom:1px solid var(--rule);
}
.tbl td{padding:9px 10px 9px 0;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl td.num,.tbl th.num{text-align:right;padding-right:0}
.tbl td.num{font-family:"IBM Plex Mono",monospace;font-size:13px}
.tbl .name{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--ink-soft)}
.scroll-x{overflow-x:auto}
.tick{color:var(--runtime);font-weight:600}
.cross{color:var(--ink-faint)}

/* notes */
.note-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.note{
  background:var(--surface);border:1px solid var(--rule);border-left:3px solid var(--rule-strong);
  border-radius:0 4px 4px 0;padding:11px 13px;
}
.note p{margin:0;font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere}
.note .meta{
  font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.06em;
  color:var(--ink-faint);margin-top:8px;display:block;
}

.empty{color:var(--ink-faint);font-size:14px;font-style:italic;margin:0}

/* the account-management block */
.rows{background:var(--surface);border:1px solid var(--rule);border-radius:4px}
.row{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:15px 17px;border-bottom:1px solid var(--rule);
}
.row:last-child{border-bottom:none}
.row .txt{flex:1 1 260px;min-width:0}
.row .txt b{display:block;font-weight:600;font-size:14.5px}
.row .txt span{display:block;color:var(--ink-soft);font-size:13px;line-height:1.6}
.row.perilous{background:var(--danger-wash)}

.inline-form{margin:14px 0 0;padding-top:14px;border-top:1px dashed var(--rule-strong);width:100%}