* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f5f5;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

h1 {
    color: #2c3e50;
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    color: #7f8c8d;
    font-size: 1.1em;
}

h2 {
    color: #34495e;
    margin-bottom: 20px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid #e0e0e0;
}

.tab {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 16px;
    color: #7f8c8d;
    transition: all 0.3s;
}

.tab:hover {
    color: #2c3e50;
}

.tab.active {
    color: #3498db;
    border-bottom-color: #3498db;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #2c3e50;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #3498db;
}

textarea {
    resize: vertical;
    font-family: 'Courier New', monospace;
}

small {
    color: #7f8c8d;
    font-size: 12px;
    display: block;
    margin-top: 5px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
    margin-right: 10px;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

/* Results */
.results {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 4px;
    border-left: 4px solid #3498db;
    max-height: 600px;
    overflow-y: auto;
}

.results:empty {
    display: none;
}

.result-item {
    background: white;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
}

.result-item h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.success {
    border-left: 4px solid #27ae60;
}

.error {
    border-left: 4px solid #e74c3c;
    background: #fadbd8;
}

.match {
    background: #d5f4e6;
}

.no-match {
    background: #ffeaa7;
}

pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 13px;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
}

.stat {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    margin-right: 10px;
    font-size: 14px;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #27ae60;
    color: white;
}

.badge-info {
    background: #3498db;
    color: white;
}

.badge-warning {
    background: #f39c12;
    color: white;
}

code {
    background: #ecf0f1;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

/* Help page styles */
.help-section {
    margin-bottom: 40px;
}

.help-section h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

.help-section ol {
    margin-left: 20px;
    line-height: 2;
}

.help-section ul {
    list-style: none;
    padding-left: 0;
}

.help-section ul li {
    padding: 8px 0;
}

.help-card {
    background: white;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
    border-left: 4px solid #3498db;
}

.help-card h4 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.help-card pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 13px;
    margin: 10px 0;
}

.help-card small {
    color: #7f8c8d;
    font-size: 12px;
    display: block;
    margin-top: 5px;
    font-style: italic;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.category-grid code {
    background: #3498db;
    color: white;
    padding: 10px;
    text-align: center;
    border-radius: 4px;
    font-weight: 600;
}