/* MailGrade - deliberately plain. Technical buyers distrust decoration. */

:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5c6370;
  --line: #e2e5ea;
  --panel: #f7f8fa;
  --accent: #1a4fd6;
  --crit: #b3261e;
  --high: #9a5b00;
  --med: #6b6355;
  --ok: #1c6b3f;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #e6e8ec;
    --muted: #9aa1ad;
    --line: #262a32;
    --panel: #161920;
    --accent: #7ea2ff;
    --crit: #ff6b5e;
    --high: #e0a44a;
    --med: #a8a294;
    --ok: #55c98a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  margin-bottom: 44px;
}
header .wrap { display: flex; align-items: baseline; gap: 14px; }
.logo { font-family: var(--mono); font-weight: 600; font-size: 15px; letter-spacing: -0.2px; }
.logo span { color: var(--accent); }
.tagline { color: var(--muted); font-size: 13px; }

h1 { font-size: 30px; line-height: 1.25; letter-spacing: -0.5px; margin: 0 0 14px; font-weight: 650; }
h2 { font-size: 19px; margin: 46px 0 14px; letter-spacing: -0.2px; font-weight: 620; }
h3 { font-size: 15px; margin: 26px 0 8px; font-weight: 620; }
p { margin: 0 0 14px; }
.lede { color: var(--muted); font-size: 17px; margin-bottom: 26px; }

/* --- check form --- */
form.check { display: flex; gap: 8px; margin: 0 0 10px; }
input[type=text] {
  flex: 1; padding: 12px 14px; font-size: 15px; font-family: var(--mono);
  border: 1px solid var(--line); border-radius: 7px;
  background: var(--bg); color: var(--fg); min-width: 0;
}
input[type=text]:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
button {
  padding: 12px 20px; font-size: 15px; font-weight: 560; cursor: pointer;
  border: 1px solid transparent; border-radius: 7px;
  background: var(--accent); color: #fff; white-space: nowrap;
}
button:disabled { opacity: .55; cursor: default; }
.hint { color: var(--muted); font-size: 13px; margin-bottom: 30px; }

/* --- results --- */
#out { margin: 26px 0; }
.panel {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel); padding: 18px 20px; margin-bottom: 16px;
}
.gradeline { display: flex; align-items: center; gap: 16px; margin-bottom: 4px; }
.grade {
  font-family: var(--mono); font-size: 34px; font-weight: 700;
  width: 58px; height: 58px; display: grid; place-items: center;
  border-radius: 10px; border: 2px solid currentColor; flex: none;
}
.g-A, .g-B { color: var(--ok); }
.g-C { color: var(--high); }
.g-D, .g-F { color: var(--crit); }
.g-none { color: var(--muted); font-size: 20px; }
.gradetext strong { display: block; font-size: 16px; }
.gradetext span { color: var(--muted); font-size: 13.5px; }

table.facts { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 6px; }
table.facts td { padding: 7px 0; border-top: 1px solid var(--line); vertical-align: top; }
table.facts td:first-child { color: var(--muted); width: 148px; white-space: nowrap; }
table.facts td:last-child { font-family: var(--mono); font-size: 13px; word-break: break-word; }

.finding { border-left: 3px solid var(--line); padding: 2px 0 2px 14px; margin: 0 0 18px; }
.finding.critical { border-color: var(--crit); }
.finding.high { border-color: var(--high); }
.finding.medium { border-color: var(--med); }
.sev {
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  letter-spacing: .7px; text-transform: uppercase;
}
.critical .sev { color: var(--crit); }
.high .sev { color: var(--high); }
.medium .sev { color: var(--med); }
.finding p { margin: 3px 0 0; font-size: 14.5px; }
.finding .impact { color: var(--muted); font-size: 13.5px; }

.clean { color: var(--ok); font-weight: 560; }
.err { color: var(--crit); }
.spin { color: var(--muted); font-size: 14px; font-family: var(--mono); }

.callout-report {
  border: 1px solid var(--line); border-left: 3px solid var(--accent);
  background: var(--panel); border-radius: 0 8px 8px 0;
  padding: 14px 18px; margin: 26px 0 0; font-size: 14.5px;
}

/* --- offer --- */
.offer { border: 1px solid var(--accent); border-radius: 10px; padding: 22px 24px; margin: 20px 0 0; }
.price { font-family: var(--mono); font-size: 27px; font-weight: 700; }
.price small { font-size: 13px; font-weight: 400; color: var(--muted); font-family: inherit; }
ul.deliver { margin: 12px 0 18px; padding-left: 19px; font-size: 14.5px; }
ul.deliver li { margin-bottom: 6px; }
a.buy {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 12px 22px; border-radius: 7px; text-decoration: none; font-weight: 560;
}
.small { font-size: 13px; color: var(--muted); }
code {
  font-family: var(--mono); font-size: 12.5px;
  background: var(--panel); border: 1px solid var(--line);
  padding: 1px 5px; border-radius: 4px;
}
a { color: var(--accent); }
footer {
  margin-top: 64px; padding: 24px 0 44px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 13px;
}