:root {
  --bg: #050714;
  --ink: #f6f5f2;
  --muted: rgba(246, 245, 242, .62);
  --faint: rgba(246, 245, 242, .42);
  --line: rgba(255, 255, 255, .14);
  --line-strong: rgba(255, 255, 255, .28);
  --wash: rgba(255, 255, 255, .04);
  --ok: #d7ead0;
  --bad: #f0c2b8;
  --display: "Bricolage Grotesque", "Avenir Next", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "DM Sans", "Avenir Next", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: #fff; }
button, input, select, textarea { font: inherit; color: inherit; }

.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.rail {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  position: sticky;
  top: 0;
  height: 100vh;
}
.rail form { margin-top: auto; }
.brand img { display: block; width: 148px; height: auto; }
.nav { display: grid; gap: 2px; }
.nav-group { display: grid; gap: 0; }
.nav-label {
  color: var(--faint);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  padding: 12px 0 4px;
}
.nav-group.open .nav-label { color: var(--ink); }
.nav a.sub { padding-left: 14px; }
.nav a, .link {
  background: none;
  border: 0;
  color: var(--muted);
  padding: 8px 0;
  cursor: pointer;
  font-size: 14px;
  text-align: left;
}
.nav a.sub.active { color: var(--ink); box-shadow: inset 2px 0 0 #fff; padding-left: 14px; }
.nav a.active { color: var(--ink); box-shadow: inset 2px 0 0 #fff; padding-left: 12px; }
.nav a:hover, .link:hover { color: var(--ink); }
.topbar {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 22px 32px;
}

.main { padding: 48px 40px 80px; max-width: 1120px; }
.main:has(.compose) { max-width: none; }

.eyebrow {
  margin: 0 0 14px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
}
h1, h2 { font-family: var(--display); font-weight: 500; letter-spacing: -.04em; }
h1 { font-size: clamp(40px, 5vw, 56px); line-height: .95; margin: 0 0 16px; }
.gate h1 { font-size: clamp(64px, 9vw, 108px); }
h1 em, h2 em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -.03em; }
h2 { font-size: 28px; margin: 0 0 12px; }
.lede { color: var(--muted); margin: 0 0 28px; max-width: 42ch; }

.gate {
  background:
    radial-gradient(900px 420px at 18% -10%, rgba(92, 24, 48, .55), transparent 55%),
    linear-gradient(#140910 0%, var(--bg) 42%);
}
.gate-bar { border-bottom-color: transparent; }
.gate-bar .eyebrow { margin: 0 0 0 auto; }
.stage { max-width: 760px; padding: 8vh 32px 64px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0; margin: 0 0 36px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 18px 16px 18px 0; }
.stat b { display: block; font-family: var(--display); font-size: 34px; font-weight: 500; letter-spacing: -.04em; }
.stat span, .muted { color: var(--muted); }
.card { padding: 8px 0 28px; margin: 0 0 8px; }
.grid-2 { display: grid; grid-template-columns: 1.3fr .7fr; gap: 48px; }
.compose { display: grid; grid-template-columns: minmax(320px, 520px) minmax(0, 1fr); gap: 40px; align-items: start; }
.compose .form { max-width: none; }
.preview-pane { position: sticky; top: 24px; }
.inbox { border: 1px solid var(--line); background: #100e0c; }
.inbox-meta { display: grid; gap: 6px; padding: 14px 16px; border-bottom: 1px solid var(--line); font-size: 13px; }
.inbox-meta span { display: inline-block; width: 64px; color: var(--faint); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.preview-pane iframe { display: block; width: 100%; height: min(760px, 72vh); border: 0; background: #100e0c; }
.stack { display: grid; gap: 18px; }

.banner { padding: 12px 0; margin: 0 0 20px; border-bottom: 1px solid var(--line); }
.banner.ok { color: var(--ok); }
.banner.err { color: var(--bad); }
.banner.warn { color: var(--ink); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 12px 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--faint); font-size: 11px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; }
td.end { text-align: right; }

.form, .login { display: grid; gap: 16px; max-width: 460px; }
.field { display: grid; gap: 8px; }
.field span { color: var(--faint); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; }
input, select, textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 12px 0;
}
textarea { min-height: 220px; resize: vertical; font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: 13px; line-height: 1.55; border: 1px solid var(--line); padding: 12px; }
textarea[hidden] { display: none !important; }
.letter-toolbar { display: flex; flex-wrap: wrap; gap: 8px; }
.letter-toolbar button {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 7px 10px;
  font-size: 13px;
  cursor: pointer;
}
.letter {
  min-height: 280px;
  max-height: 560px;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 22px 20px 28px;
  background: #171410;
  color: #f4efe6;
  outline: none;
}
.letter:focus { border-color: var(--line-strong); }
input[type="file"] { padding: 10px 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.checks { display: flex; gap: 16px; flex-wrap: wrap; }
.checks label { display: flex; gap: 8px; align-items: center; }

.btn, button.btn, a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: #050714;
  border: 1px solid #fff;
  border-radius: 0;
  padding: 12px 18px;
  font-weight: 500;
  letter-spacing: .02em;
  cursor: pointer;
  text-decoration: none;
}
.btn.ghost, a.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn.tiny { padding: 7px 10px; font-size: 13px; }
.pager { display: flex; gap: 12px; align-items: center; margin-top: 12px; color: var(--muted); }
.pill {
  display: inline-block;
  border-bottom: 1px solid var(--line-strong);
  padding: 0 0 1px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink);
}
.pill.bad { color: var(--bad); border-color: var(--bad); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.actions.end { width: 100%; justify-content: flex-end; }
hr.quiet { border: 0; border-top: 1px solid var(--line); margin: 8px 0; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .rail { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
  .nav-group { flex: 1 0 100%; }
  .topbar { flex-wrap: wrap; padding: 18px 16px; gap: 12px; }
  .main, .stage { padding: 32px 16px 56px; }
  .stats, .grid-2, .split, .compose { grid-template-columns: 1fr; }
  .preview-pane { position: static; }
  .gate-bar .eyebrow { margin-left: 0; }
}