:root {
  --bg: #f6f3ef;
  --ink: #1f1f1f;
  --accent: #e24b3c;
  --card: #ffffff;
  --muted: #6b6b6b;
  --border: #e5e0da;
  --font: "IBM Plex Sans", "Helvetica", "Arial", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: radial-gradient(circle at 10% 10%, #fff5e9, #f6f3ef);
}

header {
  padding: 20px;
  font-weight: 600;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

input, button {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
}

.list {
  display: grid;
  gap: 10px;
}

.mail-item {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.muted { color: var(--muted); }
.row { display: flex; gap: 10px; align-items: center; }
.space { display: flex; justify-content: space-between; align-items: center; }