:root {
  color-scheme: light;
  --ink: #182028;
  --muted: #5e6a75;
  --line: #d9e0e6;
  --paper: #ffffff;
  --bg: #f5f7f8;
  --accent: #0f7b6c;
  --accent-strong: #09594e;
  --danger-bg: #fff1f0;
  --danger: #a3261a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 48px);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

nav form {
  margin: 0;
}

main {
  width: min(100%, 1040px);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px) 18px;
  flex: 1;
}

.auth-panel {
  width: min(100%, 420px);
  margin: 0 auto;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

h1,
h2,
p {
  margin-top: 0;
}

p {
  color: var(--muted);
  line-height: 1.5;
}

.stack {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
}

select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font: inherit;
}

button {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

nav button {
  min-height: 34px;
  padding: 6px 10px;
  background: transparent;
  color: var(--accent-strong);
}

.alert {
  margin-bottom: 16px;
  padding: 12px;
  color: var(--danger);
  background: var(--danger-bg);
  border: 1px solid #ffc9c3;
  border-radius: 6px;
}

.notice {
  margin-bottom: 16px;
  padding: 12px;
  color: #0b5f35;
  background: #eaf8ef;
  border: 1px solid #b9e7c8;
  border-radius: 6px;
}

.user-form {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(180px, 1fr) 150px auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 28px;
}

.config-form {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 160px minmax(220px, 1.3fr);
  gap: 14px;
  align-items: end;
  margin-bottom: 28px;
}

.config-form .full {
  grid-column: 1 / -1;
}

textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  resize: vertical;
}

.danger {
  border-color: #ba3327;
  color: #ba3327;
}

.page-head {
  margin-bottom: 28px;
}

.content {
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 14px;
}

code {
  font-family: Consolas, Monaco, monospace;
  font-size: 14px;
}

.footer {
  padding: 18px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 620px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .auth-panel,
  .content {
    padding: 20px;
  }

  .user-form {
    grid-template-columns: 1fr;
  }

  .config-form {
    grid-template-columns: 1fr;
  }
}