:root {
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-tertiary: #374151;
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --accent: #06B6D4;
    --accent-dark: #0891B2;
    --border: #374151;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo h1 {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.accent {
    color: var(--accent);
}

.subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.status-badges {
    display: flex;
    gap: 1rem;
}

.status-badge, .version-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
}

.icon {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.icon-small {
    width: 16px;
    height: 16px;
}

.icon-tiny {
    width: 12px;
    height: 12px;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-secondary);
}

.tab {
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
}

.tab.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

.tab-content {
    display: none;
    padding: 1.5rem 0;
}

.tab-content.active {
    display: block;
}

.scan-config {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.input-group {
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    padding: 0.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.target-input {
    flex-grow: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 0.5rem;
    font-size: 0.875rem;
}

.target-input:focus {
    outline: none;
}

.controls {
    display: flex;
    gap: 1rem;
}

.scan-select {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    font-size: 0.875rem;
}

.scan-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--accent);
    color: white;
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
}

.scan-button:hover {
    background-color: var(--accent-dark);
}

.scan-options {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

.options-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.option-card {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

.option-card label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.option-card select,
.option-card input {
    width: 100%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 0.25rem;
}

.port-range {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.port-range input {
    width: 100px;
}

.scan-progress {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    margin-top: 1.5rem;
}

.progress-bar {
    height: 0.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 0.25rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background-color: var(--accent);
    width: 0;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: right;
}

.scan-log {
    margin-top: 1rem;
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.25rem;
    font-family: monospace;
    font-size: 0.875rem;
    height: 200px;
    overflow-y: auto;
}

.results-summary {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.summary-card {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

.summary-card label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.summary-card .value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
}

.results-table {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 0.75rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
}

td {
    padding: 0.75rem;
    border-top: 1px solid var(--border);
}

.port-state {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.state-open {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.state-closed {
    background-color: rgba(156, 163, 175, 0.1);
    color: var(--text-secondary);
}

.state-filtered {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1rem 0;
    margin-top: 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.warning {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--warning);
}

.copyright {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.hidden {
    display: none;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}