:root {
  --primary-color: #4285f4;
  --success-color: #34a853;
  --warning-color: #fbbc05;
  --danger-color: #ea4335;
  --light-bg: #f1f2f3;
  --card-bg: #ffffff;
  --border-color: #dfe1e5;
  --text-color: #202124;
  --text-secondary: #5f6368;
}

* {
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--light-bg);
}

.container {
  width: 100%;
  max-width: 1560px;
  min-width: 1240px;
  margin: 20px auto;
  box-sizing: border-box;
  color: var(--text-color);
  line-height: 1.6;
}

.container *{
  box-sizing: border-box;
}


header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px 0;
}

h1 {
  font-size: 2.4rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 90%;
  margin: 0 auto;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  padding: 25px;
  margin-bottom: 25px;
}

.card-title {
  font-size: 1.4rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  display: flex;
  align-items: center;
}

.card-title span {
  margin-right: 10px;
  font-size: 1.6rem;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 12px 15px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn span {
  margin-right: 8px;
  font-size: 1.2rem;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-success {
  background: var(--success-color);
}

.btn-warning {
  background: var(--warning-color);
}

.btn-danger {
  background: var(--danger-color);
}

.btn-secondary {
  background: #6c757d;
}

.sql-container {
  margin-bottom: 25px;
}

textarea {
  width: 100%;
  min-height: 150px;
  padding: 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 1rem;
  resize: vertical;
}

.status-bar {
  background: var(--card-bg);
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-left: 4px solid var(--primary-color);
}

.result-area {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th,
td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: #f8f9fa;
  font-weight: 600;
  position: sticky;
  top: 0;
}

tr:hover {
  background-color: #f8f9fa;
}

.pagination {
  display: flex;
  justify-content: center;
  margin-top: 20px;
  gap: 10px;
}

.page-btn {
  padding: 8px 15px;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
}

.page-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.instructions {
  margin-top: 30px;
}

.instructions h2 {
  margin-bottom: 15px;
  color: var(--primary-color);
}

.instructions ul {
  padding-left: 25px;
}

.instructions li {
  margin-bottom: 10px;
}

.hidden {
  display: none;
}

.file-input {
  display: none;
}

.loading {
  text-align: center;
  padding: 30px;
  font-size: 1.2rem;
  color: var(--text-secondary);
}

.loading::after {
  content: " ";
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 3px solid rgba(66, 133, 244, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s linear infinite;
  margin-left: 10px;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.alert {
  padding: 15px;
  border-radius: 6px;
  margin: 15px 0;
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
  border-left: 4px solid var(--success-color);
}

.alert-error {
  background-color: #f8d7da;
  color: #721c24;
  border-left: 4px solid var(--danger-color);
}

.footer {
  text-align: center;
  margin-top: 40px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}