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

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2333;
    --bg-input: #0d1117;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --info: #58a6ff;
    --border: #30363d;
    --border-focus: #e94560;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.header-brand h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
}

.header-brand .subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.online { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.status-badge.offline { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.status-badge.realtime { background: rgba(88, 166, 255, 0.15); color: var(--info); animation: pulse 2s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.login-overlay {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding: 32px;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 18px;
    color: var(--text-primary);
}

.main {
    flex: 1;
    padding: 24px 32px;
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }

.stat-card.active { border-left: 3px solid var(--success); }
.stat-card.warning { border-left: 3px solid var(--warning); }
.stat-card.inactive { border-left: 3px solid var(--danger); }
.stat-card.danger { border-left: 3px solid var(--danger); background: rgba(248, 81, 73, 0.05); }

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.charts-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.chart-container h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chart-container canvas {
    max-height: 200px;
}

.actions-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.tab-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover { background: var(--bg-secondary); color: var(--text-primary); }
.tab-btn.active { background: var(--bg-card); color: var(--accent); border-color: var(--accent); }

.tab-content { animation: fadeIn 0.3s; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.data-table th {
    background: var(--bg-secondary);
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    white-space: nowrap;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255, 255, 255, 0.02); }

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 16px !important;
}

.badge {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.badge-active { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.badge-revoked { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.badge-expired { background: rgba(210, 153, 34, 0.15); color: var(--warning); }
.badge-pending { background: rgba(88, 166, 255, 0.15); color: var(--info); }

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: rgba(248, 81, 73, 0.1); }

.btn-small { padding: 4px 8px; font-size: 11px; }
.btn-full { width: 100%; padding: 12px; font-size: 14px; font-weight: 600; letter-spacing: 0.5px; }

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    accent-color: var(--accent);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
}

.form-hint {
    display: block;
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 20px;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large { max-width: 720px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 16px; }

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.modal-close:hover { color: var(--text-primary); }

.modal-body { padding: 24px; }

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

.license-key-display {
    background: var(--bg-primary);
    border: 2px dashed var(--accent);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--accent);
    margin: 16px 0;
    font-family: 'Courier New', monospace;
}

.user-credentials {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
}

.user-credentials h4 { margin-bottom: 12px; color: var(--accent); font-size: 13px; }
.user-credentials p { margin: 4px 0; font-size: 13px; }
.user-credentials span { color: var(--text-primary); font-family: monospace; }

.realtime-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.realtime-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.realtime-card h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.session-list, .attempt-list { max-height: 400px; overflow-y: auto; }

.session-item, .attempt-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.2s;
}

.session-item:hover, .attempt-item:hover { border-color: var(--accent); }

.session-info, .attempt-info { display: flex; flex-direction: column; gap: 4px; }

.session-license, .attempt-license { font-weight: 600; font-family: monospace; font-size: 13px; color: var(--accent); }
.session-client, .attempt-client { font-size: 12px; color: var(--text-secondary); }
.session-time, .attempt-time { font-size: 11px; color: var(--text-muted); }
.session-ip, .attempt-ip { font-size: 11px; color: var(--info); font-family: monospace; }

.session-status { padding: 4px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.status-running { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.status-validating { background: rgba(88, 166, 255, 0.15); color: var(--info); }
.status-failed { background: rgba(248, 81, 73, 0.15); color: var(--danger); }

.alert-row { cursor: pointer; }
.alert-row:hover { background: rgba(248, 81, 73, 0.05) !important; }

.alert-type { text-transform: uppercase; font-size: 10px; font-weight: 600; padding: 2px 6px; border-radius: 3px; }
.alert-machine_mismatch { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.alert-ip_changed { background: rgba(210, 153, 34, 0.15); color: var(--warning); }
.alert-hardware_mismatch { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.alert-unauthorized_copy { background: rgba(248, 81, 73, 0.2); color: var(--danger); border: 1px solid var(--danger); }

.detail-section { margin-bottom: 24px; }
.detail-section h4 { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.detail-item { background: var(--bg-secondary); padding: 12px; border-radius: 6px; border: 1px solid var(--border); }
.detail-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }
.detail-value { font-size: 13px; color: var(--text-primary); font-family: monospace; word-break: break-all; }

.footer {
    padding: 16px 32px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

@media (max-width: 1200px) {
    .charts-row { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .realtime-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .stats-bar { grid-template-columns: 1fr; }
    .header { flex-direction: column; gap: 12px; }
    .main { padding: 16px; }
    .form-row { grid-template-columns: 1fr; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 8px; }
    .detail-grid { grid-template-columns: 1fr; }
}

.login-header { text-align: center; margin-bottom: 24px; }
.login-header h2 { font-size: 20px; margin-bottom: 4px; }
.login-header p { font-size: 13px; color: var(--text-secondary); }

.login-error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--danger);
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--danger);
}

.user-email { font-size: 12px; color: var(--text-secondary); margin-right: 12px; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.actions-cell { white-space: nowrap; }
.actions-cell .btn { margin-right: 4px; margin-bottom: 4px; }