/* Минималистичный дизайн в духе shadcn/ui — нейтральная палитра,
   карточки, скруглённые контролы. Без внешних шрифтов/иконок и CDN —
   инструмент внутренний, единственный на весь сервер, лишние сетевые
   зависимости ни к чему. */

:root {
  --background: 0 0% 100%;
  --foreground: 240 10% 3.9%;
  --card: 0 0% 100%;
  --card-foreground: 240 10% 3.9%;
  --border: 240 5.9% 90%;
  --muted: 240 4.8% 95.9%;
  --muted-foreground: 240 3.8% 46.1%;
  --primary: 240 5.9% 10%;
  --primary-foreground: 0 0% 98%;
  --destructive: 0 72% 51%;
  --destructive-foreground: 0 0% 98%;
  --success-bg: 143 64% 96%;
  --success-fg: 142 72% 20%;
  --success-border: 145 63% 82%;
  --ring: 240 5.9% 10%;
  --radius: 0.625rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: 240 10% 3.9%;
    --foreground: 0 0% 98%;
    --card: 240 6% 8%;
    --card-foreground: 0 0% 98%;
    --border: 240 4% 18%;
    --muted: 240 4% 14%;
    --muted-foreground: 240 5% 64.9%;
    --primary: 0 0% 98%;
    --primary-foreground: 240 5.9% 10%;
    --destructive: 0 63% 42%;
    --destructive-foreground: 0 0% 98%;
    --success-bg: 143 30% 12%;
    --success-fg: 142 60% 75%;
    --success-border: 145 30% 24%;
    --ring: 240 4.9% 83.9%;
  }
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  margin: 0;
  min-height: 100vh;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: clamp(1.5rem, 6vw, 2.5rem) clamp(1rem, 4vw, 1.5rem) 4rem;
  text-align: center;
}

header.top {
  margin-bottom: 1.75rem;
}

header.top h1 {
  font-size: clamp(1.05rem, 3.4vw, 1.2rem);
  font-weight: 600;
  margin: 0 0 0.15rem;
  letter-spacing: -0.01em;
}

header.top p {
  margin: 0;
  color: hsl(var(--muted-foreground));
  font-size: 0.875rem;
}

.card {
  background: hsl(var(--card));
  color: hsl(var(--card-foreground));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.card h2 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.card > .card-desc {
  color: hsl(var(--muted-foreground));
  font-size: 0.85rem;
  margin: -0.5rem 0 1rem;
}

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  text-align: center;
  font-weight: 500;
  color: hsl(var(--muted-foreground));
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0 0.5rem 0.6rem;
  border-bottom: 1px solid hsl(var(--border));
}
tbody td {
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid hsl(var(--border));
  vertical-align: middle;
  text-align: center;
}
tbody tr:last-child td { border-bottom: none; }
tbody td.empty { color: hsl(var(--muted-foreground)); text-align: center; padding: 1.5rem 0; }
td.actions { text-align: center; white-space: nowrap; }

a { color: hsl(var(--primary)); text-decoration: underline; text-underline-offset: 2px; }
a.link-muted { color: hsl(var(--muted-foreground)); font-size: 0.85rem; }

.field-row { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.field-row input { flex: 1 1 200px; min-width: 0; }

input[type="text"], input[type="password"] {
  padding: 0.5rem 0.7rem;
  border: 1px solid hsl(var(--border));
  border-radius: calc(var(--radius) - 0.2rem);
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-size: 0.9rem;
  outline: none;
  width: 100%;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
input[type="text"]:focus, input[type="password"]:focus {
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.15);
}

.hint-text {
  color: hsl(var(--muted-foreground));
  font-size: 0.78rem;
  margin: 0.5rem 0 0;
}

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: calc(var(--radius) - 0.2rem);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: opacity 0.15s ease, background-color 0.15s ease;
  font-family: inherit;
}
button:active, .btn:active { opacity: 0.85; }

.btn-primary, button[type="submit"] {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}
.btn-primary:hover, button[type="submit"]:hover { opacity: 0.9; }

.btn-outline {
  background: transparent;
  border-color: hsl(var(--border));
  color: hsl(var(--foreground));
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
}
.btn-outline:hover { background: hsl(var(--muted)); }

.btn-destructive {
  background: transparent;
  border-color: hsl(var(--destructive) / 0.35);
  color: hsl(var(--destructive));
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
}
.btn-destructive:hover { background: hsl(var(--destructive) / 0.08); }

form.inline { display: inline; margin: 0; }

.btn-link {
  background: none;
  border: none;
  color: hsl(var(--muted-foreground));
  font-size: 0.8rem;
  font-weight: 400;
  padding: 0;
  text-decoration: underline;
}
.btn-link:hover { color: hsl(var(--foreground)); }

.alert {
  border-radius: calc(var(--radius) - 0.2rem);
  padding: 0.7rem 0.9rem;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  border: 1px solid transparent;
}
.alert-error {
  background: hsl(var(--destructive) / 0.08);
  border-color: hsl(var(--destructive) / 0.3);
  color: hsl(var(--destructive));
}
.alert-success {
  background: hsl(var(--success-bg));
  border-color: hsl(var(--success-border));
  color: hsl(var(--success-fg));
}

code, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  background: hsl(var(--muted));
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
}

img, svg { max-width: 100%; }
.mono-wrap { word-break: break-all; }

.qr-wrap { max-width: 200px; margin: 0.9rem auto 0; }
.qr-wrap svg { width: 100%; height: auto; display: block; }

@media (max-width: 480px) {
  .field-row { flex-direction: column; }
  .field-row input, .field-row button, .field-row a { width: 100%; }
}