:root {
  --bg: #0f1419;
  --bg-elev: #171e26;
  --bg-soft: #1e2732;
  --line: #2a3544;
  --text: #e8eef4;
  --muted: #8b9aab;
  --accent: #2dd4a8;
  --accent-dim: #1a9e7a;
  --danger: #f07178;
  --warn: #e6c07b;
  --ok: #2dd4a8;
  --radius: 10px;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a3d36 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1a2533 0%, transparent 50%),
    var(--bg);
  color: var(--text);
}

code,
.mono {
  font-family: var(--mono);
}

.brand {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

h1 {
  margin: 0.25rem 0 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.muted code {
  font-size: 0.8rem;
  color: var(--warn);
}

/* Login */
.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-panel {
  width: min(400px, 100%);
  padding: 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.login-panel form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="search"] {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  font: inherit;
  outline: none;
}

input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px rgba(45, 212, 168, 0.15);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  color: #06241c;
  margin-top: 0.35rem;
}

.btn.primary:hover:not(:disabled) {
  background: #4ae0b8;
}

.btn.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.btn.ghost:hover:not(:disabled) {
  background: var(--bg-soft);
}

.btn.danger {
  background: transparent;
  border-color: rgba(240, 113, 120, 0.45);
  color: var(--danger);
}

.btn.danger:hover:not(:disabled) {
  background: rgba(240, 113, 120, 0.12);
}

.btn.small {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0.25rem 0 0;
}

/* App shell */
.app-view {
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.75rem 1rem;
  border-bottom: 1px solid var(--line);
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: 1.25rem;
  padding: 1.25rem 1.75rem 2rem;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.issue-panel,
.list-panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.issue-panel form {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.issued-result {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px dashed var(--accent-dim);
}

.issued-result .label {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.issued-result code {
  display: block;
  word-break: break-all;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.list-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.list-header h2 {
  margin: 0;
}

.count {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
}

.list-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.list-actions input {
  width: min(260px, 50vw);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  text-align: left;
  padding: 0.7rem 0.55rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td.key {
  font-family: var(--mono);
  font-size: 0.75rem;
  max-width: 200px;
  word-break: break-all;
}

td.machine {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  max-width: 140px;
  word-break: break-all;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 2rem 0.5rem !important;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge.active {
  background: rgba(45, 212, 168, 0.15);
  color: var(--ok);
}

.badge.revoked {
  background: rgba(240, 113, 120, 0.15);
  color: var(--danger);
}

.badge.expired {
  background: rgba(230, 192, 123, 0.15);
  color: var(--warn);
}

.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.toast {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 50;
  max-width: min(360px, calc(100vw - 2rem));
  padding: 0.85rem 1rem;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  font-size: 0.9rem;
}

.toast.ok {
  border-color: var(--accent-dim);
}

.toast.err {
  border-color: rgba(240, 113, 120, 0.5);
}