:root {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #1a1a1a;
  background: #f4f6f8;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-cancel-bg: #e0e7ff;
  --color-cancel-text: #1e40af;
  --color-link: #2563eb;
  --color-refresh: #0891b2;
  --shadow-card: 0 4px 24px rgba(30, 58, 138, 0.08);
}

body { margin: 0; padding: 1.5rem; max-width: 1100px; margin-inline: auto; }
body.login-page {
  max-width: none;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(160deg, #f0f7ff 0%, #e8eef7 50%, #f4f6f8 100%);
  box-sizing: border-box;
}

header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: .5rem; }
header nav { display: flex; align-items: center; flex-wrap: wrap; gap: .75rem; }
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
header nav .nav-link {
  display: inline;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
  color: var(--color-link);
}
header nav .nav-link:hover { text-decoration: underline; }
header nav .nav-link-refresh { color: var(--color-refresh); }
header nav .nav-link-refresh:hover { color: #0e7490; }
header nav form { margin: 0; display: inline; }
header nav .btn-logout {
  padding: 0.4rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1d4ed8;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
header nav .btn-logout:hover {
  background: #dbeafe;
  border-color: #93c5fd;
  color: #1e3a8a;
  filter: none;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  margin-bottom: 1rem;
  border: 1px solid rgba(0, 0, 0, 0.04);
}
.login-card {
  width: 100%;
  max-width: 400px;
  margin: 0;
}
.login-card h1 { margin: 0 0 0.35rem; font-size: 1.65rem; color: #292524; }
.login-card .login-sub { margin: 0 0 1.5rem; color: #57534e; font-size: 0.95rem; }
.login-form label { display: block; margin-bottom: 1rem; font-size: 0.9rem; font-weight: 500; color: #44403c; }
.login-form input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #d6d3d1;
  box-sizing: border-box;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.login-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(156, 66, 33, 0.15);
}
.login-form button[type="submit"] {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.65rem 1rem;
  font-weight: 600;
  border-radius: 8px;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem; border-bottom: 1px solid #e5e7eb; font-size: .95rem; }
input, textarea, button { font: inherit; padding: .45rem .6rem; border-radius: 8px; border: 1px solid #cbd5e1; }
button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 500;
}
button:hover { filter: brightness(1.05); }
button.secondary { background: #64748b; }
button.success { background: #15803d; }
button.warning { background: #c2410c; }
button.danger { background: #b91c1c; }
button.success:hover, button.warning:hover, button.danger:hover, button.secondary:hover { filter: brightness(1.08); }

.warn { color: #b45309; }
.api-banner { padding: .75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.api-off { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.api-on { color: #166534; }
.api-status { margin: 0 0 1rem; }
.search-row { margin: 0 0 1rem; }
.search-row label { display: block; margin-bottom: .35rem; font-size: .9rem; color: #475569; }
#hwid-search { width: 100%; max-width: 24rem; box-sizing: border-box; }
.search-empty { color: #64748b; font-size: .95rem; margin-top: .75rem; }
code { background: #f1f5f9; padding: .1rem .35rem; border-radius: 4px; }

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(28, 25, 23, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.hidden { display: none; }
.modal-dialog {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}
.modal-message {
  margin: 0 0 1.25rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #292524;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
}
.modal-btn {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  min-width: 5rem;
}
.modal-btn-ok {
  background: var(--color-primary);
  color: #fff;
}
.modal-btn-ok:hover { background: var(--color-primary-hover); filter: none; }
.modal-btn-cancel {
  background: var(--color-cancel-bg);
  color: var(--color-cancel-text);
}
.modal-btn-cancel:hover { filter: brightness(0.97); }

.version-block {
  border: 1px solid #dbeafe;
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  background: #fff;
}
.version-block h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.version-status { margin: 0 0 0.75rem; font-size: 0.9rem; }
.version-ok { color: #166534; }
.version-missing { color: #b45309; }
.version-add { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid #e5e7eb; }
.version-picker-row { margin: 0 0 1rem; }
.version-picker-row label { display: block; margin-bottom: 0.35rem; font-size: 0.9rem; color: #475569; }
#version-picker { min-width: 8rem; max-width: 12rem; }
.version-default-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: #1d4ed8;
  background: #dbeafe;
  padding: 0.1rem 0.45rem;
  border-radius: 6px;
  vertical-align: middle;
}
.version-default-note { margin: 0 0 0.75rem; font-size: 0.9rem; color: #475569; }
.version-set-default { margin: 0 0 0.75rem; }
#registered-hwids th.col-version,
#registered-hwids td.col-version {
  width: 1%;
  white-space: nowrap;
  padding-left: 0.35rem;
  padding-right: 0.35rem;
}
#registered-hwids th.col-actions,
#registered-hwids td.col-actions {
  width: 1%;
  white-space: nowrap;
}
.version-select-form { margin: 0; display: inline; }
.version-select-form select {
  width: auto;
  min-width: 0;
  max-width: 5.5rem;
  padding: 0.25rem 0.4rem;
  font-size: 0.85rem;
}
.hwid-actions {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.35rem;
}
.hwid-actions form { margin: 0; display: inline-flex; }
button.btn-compact {
  padding: 0.35rem 0.55rem;
  font-size: 0.85rem;
  white-space: nowrap;
}
.pending-actions {
  white-space: nowrap;
}
.pending-approve-form {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0.35rem 0 0;
}
.pending-approve-form select {
  max-width: 5.5rem;
  padding: 0.25rem 0.4rem;
  font-size: 0.85rem;
}
.pending-actions form { display: inline-flex; margin: 0; vertical-align: middle; }
#registered-hwids .col-datetime {
  white-space: nowrap;
  font-size: 0.9rem;
}
#registered-hwids tr.hwid-row-sub td {
  background: #f8fafc;
  padding-top: 0.35rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid #e5e7eb;
}
.hwid-detail-line,
form.hwid-settings-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.5rem;
  padding-left: 0.25rem;
  margin: 0;
}
.hwid-detail-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
}
.hwid-detail-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #475569;
}
.expiry-form .expiry-enable {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
}
.expiry-form input[type="date"] {
  padding: 0.25rem 0.4rem;
  font-size: 0.85rem;
}
.expiry-form:not(:has([name=expiry_enabled]:checked)) input[type="date"] {
  opacity: 0.75;
}
.version-select-form select {
  max-width: 7rem;
  padding: 0.25rem 0.4rem;
  font-size: 0.85rem;
}