:root {
  --bg: #f7f8fc;
  --panel: #ffffff;
  --text: #182230;
  --muted: #5a6470;
  --primary: #0059d6;
  --primary-dark: #0047ab;
  --border: #d8dde6;
  --ok: #0a7a34;
  --error: #ad1f1f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", Tahoma, sans-serif;
  background: linear-gradient(180deg, #eef2ff 0%, var(--bg) 160px);
  color: var(--text);
}

.container {
  width: min(1100px, 92vw);
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
}

header h1 {
  margin-bottom: 0.3rem;
}

header p {
  margin-top: 0;
  color: var(--muted);
}

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

.stack {
  display: grid;
  gap: 0.8rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

input,
button,
.button {
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}

input {
  padding: 0.6rem 0.7rem;
}

input.short {
  width: 92px;
}

button,
.button {
  padding: 0.55rem 0.9rem;
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

button:hover,
.button:hover {
  background: var(--primary-dark);
}

button.danger,
.button.danger {
  background: #b42318;
  border-color: #b42318;
}

button.danger:hover,
.button.danger:hover {
  background: #8e1b13;
}

.button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

form {
  margin: 0;
}

.inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.actions {
  display: grid;
  gap: 0.45rem;
}

a {
  color: var(--primary);
}

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

th,
td {
  padding: 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.flash {
  padding: 0.7rem 0.8rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  border: 1px solid;
}

.flash.ok {
  color: var(--ok);
  border-color: #99ddb2;
  background: #ebfaef;
}

.flash.error {
  color: var(--error);
  border-color: #efb8b8;
  background: #fff2f2;
}

@media (max-width: 780px) {
  table,
  thead,
  tbody,
  th,
  td,
  tr {
    display: block;
  }

  thead {
    display: none;
  }

  tr {
    border-bottom: 1px solid var(--border);
    padding: 0.6rem 0;
  }

  td {
    border-bottom: none;
    padding: 0.3rem 0;
  }
}