/* Shared chrome: layout, typography, tabs, cards, buttons, overlays. Used by all pages. */
:root {
  --bg: #0f1115; --panel: #171a21; --panel-2: #1d212b; --ink: #e6e9ef;
  --muted: #9aa3b2; --line: #2a3040; --accent: #7c5cff; --accent-2: #19c37d;
  --warn-bg: #2a141b; --code-bg: #0b0d12; --chip: #232838;
  --ok: #19c37d; --mid: #ffb020; --bad: #ff5c7c; --real: #4aa3ff;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent); }
code, pre, .dcode, .dnum, .sha, .sg-c { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
header { padding: 22px 28px 0; border-bottom: 1px solid var(--line); position: sticky; top: 0;
  background: linear-gradient(180deg, #12141a, #0f1115); z-index: 20; }
.title { font-size: 20px; font-weight: 700; letter-spacing: .2px; }
.subt { color: var(--muted); font-size: 13px; margin-top: 2px; }
nav { display: flex; gap: 4px; margin-top: 16px; flex-wrap: wrap; }
nav > button { background: transparent; color: var(--muted); border: none; border-bottom: 2px solid transparent;
  padding: 10px 14px; font-size: 14px; font-weight: 600; cursor: pointer; }
nav > button:hover { color: var(--ink); }
nav > button.active { color: var(--ink); border-bottom-color: var(--accent); }
main { max-width: 1060px; margin: 0 auto; padding: 28px; }
.tab { display: none; } .tab.active { display: block; }
h2 { font-size: 22px; margin: 4px 0 6px; }
h3 { font-size: 16px; margin: 26px 0 8px; color: #cfd5e1; }
p, li { color: #d4d9e3; }
.lead { color: var(--muted); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 9px 11px; text-align: left; vertical-align: top; }
th { background: var(--panel-2); color: #cfd5e1; font-weight: 600; }
.banner { border-radius: 10px; padding: 12px 16px; margin: 0 0 18px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.banner.no { background: var(--warn-bg); border: 1px solid #4a2230; color: #ffb3c2; }
details { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; margin: 10px 0; overflow: hidden; }
details > summary { cursor: pointer; padding: 12px 16px; font-weight: 600; list-style: none; user-select: none; display: flex; align-items: center; justify-content: space-between; }
details > summary::-webkit-details-marker { display: none; }
details > summary .alt { font-size: 12px; color: var(--muted); font-weight: 500; }
details[open] > summary { border-bottom: 1px solid var(--line); }
details .body { padding: 4px 18px 14px; }
.crit summary { border-left: 3px solid var(--bad); } .a2 summary { border-left: 3px solid var(--mid); }
.a3 summary { border-left: 3px solid var(--ok); } .agentk summary { border-left: 3px solid var(--real); }
.pill { font-size: 11px; padding: 1px 8px; border-radius: 999px; font-weight: 700; white-space: nowrap; }
.pill.block { background: #3a1620; color: #ff9db0; } .pill.deleg { background: #142a3a; color: #8fd0ff; }
.pill.coach { background: #14301f; color: #8fe6b5; }
.v-accept { color: var(--ok); font-weight: 700; } .v-reject { color: var(--bad); font-weight: 700; }
.v-wrong { color: var(--mid); font-weight: 700; } .v-missing { color: var(--real); font-weight: 700; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn { background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 8px 14px; font-weight: 600; cursor: pointer; font-size: 13px; }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn.danger { background: transparent; border: 1px solid #4a2230; color: #ffb3c2; }
.timer { font-variant-numeric: tabular-nums; font-size: 30px; font-weight: 700; letter-spacing: 1px; }
.phase-now { color: var(--accent-2); font-weight: 600; }
tr.current td { background: #15241d; }
textarea, input[type=text], input[type=password], input[type=email] { width: 100%; background: var(--code-bg); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 10px; font-size: 13px; font-family: inherit; }
textarea { resize: vertical; }
label.field { display: block; margin: 14px 0 4px; font-weight: 600; color: #cfd5e1; font-size: 13px; }
.rate { display: flex; gap: 8px; margin: 8px 0 4px; flex-wrap: wrap; }
.rate button { border: 1px solid var(--line); background: var(--panel-2); color: var(--ink); border-radius: 8px; padding: 6px 12px; cursor: pointer; font-weight: 600; font-size: 13px; }
.rate button.sel-sh { background: #14301f; border-color: var(--ok); }
.rate button.sel-h  { background: #1d2b14; border-color: #9bd14a; }
.rate button.sel-ln { background: #2e2410; border-color: var(--mid); }
.rate button.sel-nh { background: #2e1219; border-color: var(--bad); }
.small { font-size: 12px; color: var(--muted); }
.saved { color: var(--accent-2); font-size: 12px; opacity: 0; transition: opacity .3s; } .saved.on { opacity: 1; }
ul.tight li { margin: 3px 0; }
.modecard { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 10px 0; background: var(--panel-2); }
.modecard.rec { border-color: #1f4533; background: #11251c; }

/* full-screen login overlays (candidate code entry / interviewer / admin) */
.auth-gate { position: fixed; inset: 0; background: rgba(10, 12, 16, .92); backdrop-filter: blur(3px);
  z-index: 100; display: flex; align-items: center; justify-content: center; }
.auth-card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 26px 28px; width: 380px; max-width: calc(100vw - 40px); }
.auth-card h2 { margin-top: 0; }
.auth-card .auth-msg { color: var(--bad); font-size: 13px; min-height: 18px; margin-top: 10px; }
.auth-card .btn { width: 100%; margin-top: 14px; padding: 10px; font-size: 14px; }
.auth-card input { margin-top: 6px; }
.code-input { text-transform: uppercase; letter-spacing: 6px; font-size: 22px !important; text-align: center; font-family: ui-monospace, monospace; }

/* global type scale-up (readability) */
body { font-size: 16px; line-height: 1.6; }
h2 { font-size: 24px; } h3 { font-size: 18px; }
p, li { font-size: 15.5px; }
.lead { font-size: 15px; }
.small { font-size: 13px; }
table { font-size: 15px; }
.card { font-size: 15.5px; }
label.field { font-size: 14px; }
.rate button { font-size: 14px; }
details > summary { font-size: 15px; }
details > summary .alt { font-size: 13px; }