:root {
  color-scheme: light;
  --ink: #1d1914;
  --muted: #6d645a;
  --line: #e2d8c8;
  --paper: #f6f1e8;
  --card: #fffdf8;
  --green: #0e6b52;
  --green-soft: #e5f4ee;
  --red: #8d2f24;
  --red-soft: #f8e8e4;
  --amber: #8a5a12;
  --amber-soft: #f8efd8;
  --shadow: 0 16px 40px rgba(60, 42, 20, 0.08);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 100% -10%, #efe2cc 0%, transparent 55%),
    var(--paper);
}

button, input, select { font: inherit; color: inherit; }

button { cursor: pointer; }

.app {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-end;
  margin-bottom: 22px;
}

.mark {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}

h1 {
  margin: 0;
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.lede {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.45;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 20px;
}

h2 {
  margin: 0 0 14px;
  font-size: 16px;
}

label {
  display: block;
  margin: 12px 0 6px;
  font-size: 13px;
  color: var(--muted);
}

input, select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
}

input:focus, select:focus { border-color: #b9a88a; }

.row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.row label { margin: 0; }

.check {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 14px 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
}

.check input { width: auto; margin-top: 2px; }

.phone-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.phone-head p { flex: 1; margin: 0; }
.phone-head button { flex: none; white-space: nowrap; }

.actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.phone-log {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  max-height: 240px;
  overflow: auto;
}

.phone-log:empty { display: none; }

.phone-log li {
  margin: 0;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}

button.primary, button.ghost, button.danger {
  border-radius: 999px;
  padding: 12px 16px;
  border: 1px solid transparent;
}

button.primary { background: var(--green); color: white; }
button.ghost { background: transparent; border-color: var(--line); }
button.danger { background: transparent; color: var(--red); border-color: #e7c7c1; }
button:disabled { opacity: 0.55; cursor: wait; }

.pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.pad button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 14px 0;
  font-variant-numeric: tabular-nums;
  font-size: 18px;
}

.pad button:hover { background: #faf6ef; }

.number {
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  letter-spacing: 0.04em;
  padding: 14px 16px;
}

.note, .warn, .ok, .err {
  border-radius: 12px;
  padding: 12px 14px;
  line-height: 1.45;
  font-size: 14px;
}

.note { background: #f3eee4; color: var(--ink); }
.warn { background: var(--amber-soft); color: var(--amber); }
.ok { background: var(--green-soft); color: var(--green); }
.err { background: var(--red-soft); color: var(--red); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
label.file {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 16px;
  background: transparent;
}
.file input { position: absolute; width: 1px; height: 1px; opacity: 0; }
ol.steps { margin: 0; padding-left: 18px; display: grid; gap: 8px; line-height: 1.45; }
ol.steps code { font-size: 0.92em; }
.layout + .card, .layout + .layout { margin-top: 18px; }
.stack { display: grid; gap: 10px; }
.meta { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; }
.meta span { color: var(--muted); }
.hidden { display: none; }

.history {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.history li {
  display: grid;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.history b {
  font-size: 18px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.history span { color: var(--muted); font-size: 13px; }
th, td { text-align: left; padding: 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }

@media (max-width: 800px) {
  h1 { font-size: 32px; }
  header, .layout:not(.hidden) { display: block; }
  .card + .card, .layout .card + .card { margin-top: 18px; }
}