:root {
  font-family: 'Segoe UI', system-ui, sans-serif;
  color: #111;
  background: #f4f6fb;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #eef2ff, #f4f6fb 40%, #ffffff 80%);
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 1rem;
}

h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 600;
}

.panel {
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.1);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.panel-head button {
  padding: 0.55rem 1rem;
  font-size: 0.95rem;
}

.hidden {
  display: none;
}

.message {
  text-align: center;
  margin-bottom: 1rem;
  padding: 0.5rem;
  border-radius: 6px;
  display: none;
}

.message.visible {
  display: block;
}

.message[data-state='error'] {
  background: #fee2e2;
  color: #991b1b;
}

.message[data-state='info'] {
  background: #e0f2fe;
  color: #0f172a;
}

.login-card {
  max-width: 420px;
  margin: 0 auto;
}

.login-card form {
  display: grid;
  gap: 1rem;
}

input,
textarea,
button {
  font: inherit;
}

input[type='text'],
input[type='password'],
textarea {
  width: 100%;
  border: 1px solid #dfe3f0;
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  background: #f9fafb;
}

label {
  font-weight: 500;
  font-size: 0.95rem;
  color: #1e293b;
  display: block;
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  background: #4f46e5;
  color: #fff;
  transition: background 0.2s ease;
}

button:hover {
  background: #4338ca;
}

#table-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.table-row {
  background: #f3f4f6;
  color: #0f172a;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.table-row.active {
  background: #e0e7ff;
  border-color: #4338ca;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.9rem;
}

table th,
table td {
  padding: 0.5rem;
  border: 1px solid #e2e8f0;
}

textarea {
  min-height: 100px;
}

#data-actions {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

#query-result {
  margin-top: 1rem;
}

.muted {
  color: #475467;
}

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

.import-controls input[type='file'] {
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  background: #f8fafc;
}