:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #1e2130;
  --bg-hover: #252838;
  --text-primary: #e4e6f0;
  --text-secondary: #8b8fa3;
  --text-muted: #5a5e73;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --border: #2a2d3e;
  --sidebar-width: 240px;
  --sidebar-collapsed: 60px;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.2s;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  font-size: 24px;
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.15s;
  font-size: 14px;
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(59,130,246,0.15);
  color: var(--accent);
}

.nav-item.logout {
  color: var(--danger);
}

.nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 8px;
  border-top: 1px solid var(--border);
}

/* Hamburger menu */
.hamburger {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 18px;
  line-height: 1;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 90;
}

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left 0.2s;
}

.topbar {
  padding: 16px 24px;
  padding-left: 56px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.topbar h2 {
  font-size: 18px;
  font-weight: 600;
}

.content {
  padding: 24px;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 20px;
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  font-size: 28px;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.blue { background: rgba(59,130,246,0.15); }
.stat-icon.green { background: rgba(34,197,94,0.15); }
.stat-icon.purple { background: rgba(168,85,247,0.15); }
.stat-icon.orange { background: rgba(245,158,11,0.15); }

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

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

/* Info Row */
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child { border-bottom: none; }

/* Quick Links */
.quick-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.15s;
}

.quick-link:hover { background: var(--bg-hover); }
.ql-icon { font-size: 18px; width: 24px; text-align: center; }

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-info { background: rgba(6,182,212,0.15); color: var(--info); }
.badge-new { background: var(--accent); color: white; font-size: 10px; padding: 1px 6px; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}

.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); border-color: var(--success); color: white; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; text-align: center; }

/* Forms */
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }
.form-group input,
.form-group select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-row .form-group { flex: 1; min-width: 140px; }

.filter-form { margin: 0; }

.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox-label input { width: auto !important; }

/* Tables */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 500px;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  white-space: nowrap;
}

.data-table tr:hover { background: var(--bg-hover); }
.data-table.compact th,
.data-table.compact td { padding: 6px 10px; }

code {
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 12px;
  font-family: 'Consolas', monospace;
}

/* Screenshot Grid */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.screenshot-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s;
}

.screenshot-card:hover { border-color: var(--accent); }
.screenshot-card.reviewed { opacity: 0.7; }

.screenshot-img {
  position: relative;
  cursor: pointer;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-primary);
}

.screenshot-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshot-img .badge-new {
  position: absolute;
  top: 8px;
  right: 8px;
}

.screenshot-info {
  padding: 12px;
}

.ss-name { font-weight: 600; font-size: 14px; }
.ss-ip, .ss-date, .ss-server { font-size: 12px; color: var(--text-secondary); margin-top: 2px; word-break: break-all; }

.review-form {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.review-form input[type="text"] {
  flex: 1;
  min-width: 80px;
  padding: 4px 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 12px;
}

.reviewed-badge {
  margin-top: 8px;
  font-size: 12px;
  color: var(--success);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lightbox.active { display: flex; }

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: -32px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 28px;
  cursor: pointer;
}

.lightbox-info {
  padding: 12px 0;
  color: var(--text-secondary);
  font-size: 13px;
  text-align: center;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.page-info { font-size: 13px; color: var(--text-secondary); }

/* Server Card */
.server-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.server-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.server-name { font-weight: 700; font-size: 16px; }
.server-version { font-size: 12px; color: var(--accent); background: rgba(59,130,246,0.1); padding: 2px 8px; border-radius: 4px; }
.server-addr { font-size: 12px; color: var(--text-secondary); font-family: monospace; word-break: break-all; }
.server-port { font-size: 12px; color: var(--text-muted); }

.server-clients { padding: 16px 20px; overflow-x: auto; }
.server-clients h4 { font-size: 14px; margin-bottom: 12px; color: var(--text-secondary); }

/* Empty State */
.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-state.small { padding: 20px; }

/* Login */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
  padding: 20px;
}

.login-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.login-header h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

.alert {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 13px;
}

.alert-error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: var(--danger);
}

/* Responsive: Tablet */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Responsive: Mobile */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 260px;
    max-width: 80vw;
    transition: transform 0.25s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.active {
    display: block;
    animation: fadeIn 0.2s ease;
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .sidebar-header {
    padding: 16px;
  }

  .sidebar-nav {
    padding: 8px;
    overflow-y: auto;
  }

  .nav-item {
    padding: 12px 16px;
    font-size: 15px;
    gap: 14px;
  }

  .nav-icon {
    font-size: 18px;
    width: 24px;
  }

  .main-content {
    margin-left: 0;
  }

  .topbar {
    padding-left: 56px;
  }

  .content {
    padding: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .stat-card {
    padding: 14px;
    gap: 10px;
  }

  .stat-icon {
    width: 44px;
    height: 44px;
    font-size: 22px;
  }

  .stat-value {
    font-size: 22px;
  }

  .stat-label {
    font-size: 11px;
  }

  .card-body {
    padding: 14px;
  }

  .card-header {
    padding: 12px 14px;
  }

  .form-row .form-group {
    min-width: 100%;
  }

  .screenshot-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
  }

  .server-header {
    gap: 8px;
  }

  .server-name {
    font-size: 14px;
  }

  .server-clients {
    padding: 12px;
  }

  .sidebar-footer {
    padding: 8px;
  }

  .sidebar-footer .nav-item {
    padding: 12px 16px;
    font-size: 15px;
  }

  .login-container {
    padding: 24px;
  }

  .login-header {
    margin-bottom: 24px;
  }

  .login-icon {
    font-size: 40px;
  }

  .login-header h1 {
    font-size: 18px;
  }
}

/* Responsive: Small phones */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-card {
    padding: 12px;
  }

  .screenshot-grid {
    grid-template-columns: 1fr;
  }

  .review-form {
    flex-direction: column;
  }

  .review-form input[type="text"] {
    min-width: 100%;
  }

  .review-form .btn {
    width: 100%;
  }

  .login-container {
    padding: 20px;
  }
}