/* BlockSentry Dark Tech Theme */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-hover: #232a3b;
  --border: #2a3142;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent-cyan: #00d4ff;
  --accent-blue: #3b82f6;
  --accent-purple: #7b2ff7;
  --accent-green: #00ff94;
  --accent-red: #ff4757;
  --accent-orange: #ffa502;
  --gradient-main: linear-gradient(135deg, #00d4ff, #7b2ff7);
  --gradient-card-border: linear-gradient(135deg, rgba(0,212,255,0.3), rgba(123,47,247,0.1));
  --shadow-glow: 0 0 20px rgba(0,212,255,0.15);
}

* { 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);
  min-height: 100vh;
  line-height: 1.6;
}

/* Layout */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 250px; background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed;
  top: 0; left: 0; height: 100vh; z-index: 100;
  transition: transform .3s;
}
.sidebar-logo { padding: 24px 20px; border-bottom: 1px solid var(--border); text-align: center; }
.sidebar-logo img { height: 36px; }
.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; margin-bottom: 4px;
  color: var(--text-secondary); text-decoration: none;
  border-radius: 8px; font-size: 14px; transition: all .2s;
}
.sidebar-nav a:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-nav a.active { background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(123,47,247,0.05)); color: var(--accent-cyan); }
.sidebar-nav a .icon { width: 20px; text-align: center; font-size: 16px; }
.sidebar-footer { padding: 16px 12px; border-top: 1px solid var(--border); }

/* Main content */
.main-content { flex: 1; margin-left: 250px; padding: 0; min-height: 100vh; }

/* Top bar */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 32px; background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.topbar-left h2 { font-size: 18px; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.lang-switch { display: flex; gap: 4px; }
.lang-switch a {
  padding: 4px 8px; border-radius: 4px; font-size: 12px;
  color: var(--text-muted); text-decoration: none; transition: all .2s;
}
.lang-switch a:hover { color: var(--text-primary); background: var(--bg-hover); }
.lang-switch a.active-lang { color: var(--accent-cyan); background: rgba(0,212,255,0.1); }
.user-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 6px; cursor: pointer;
  transition: background .2s;
}
.user-badge:hover { background: var(--bg-hover); }
.user-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--gradient-main); display: flex;
  align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: #fff;
}
.user-name { font-size: 14px; color: var(--text-primary); }

/* Content area */
.content { padding: 32px; }

/* Cards */
.card {
  background: var(--bg-card); border-radius: 12px;
  border: 1px solid var(--border); padding: 24px;
  transition: all .3s;
}
.card:hover { border-color: rgba(0,212,255,0.3); box-shadow: var(--shadow-glow); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.card-value { font-size: 32px; font-weight: 700; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.card-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-bottom: 32px; }

/* Tables */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  padding: 12px 16px; text-align: left; font-size: 12px;
  font-weight: 600; color: var(--text-secondary); text-transform: uppercase;
  letter-spacing: .05em; border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}
tbody td { padding: 12px 16px; border-bottom: 1px solid rgba(42,49,66,0.5); font-size: 14px; }
tbody tr:hover { background: var(--bg-hover); }

/* Severity badges */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 12px;
  font-size: 12px; font-weight: 600;
}
.badge-critical { background: rgba(255,71,87,0.15); color: var(--accent-red); }
.badge-warning { background: rgba(255,165,2,0.15); color: var(--accent-orange); }
.badge-info { background: rgba(0,212,255,0.1); color: var(--accent-cyan); }
.badge-success { background: rgba(0,255,148,0.1); color: var(--accent-green); }
.badge-free { background: rgba(139,148,158,0.15); color: var(--text-secondary); }
.badge-pro { background: rgba(0,212,255,0.15); color: var(--accent-cyan); }
.badge-enterprise { background: rgba(123,47,247,0.15); color: var(--accent-purple); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 8px; font-size: 14px;
  font-weight: 500; cursor: pointer; border: none; text-decoration: none;
  transition: all .2s;
}
.btn-primary { background: var(--gradient-main); color: #fff; }
.btn-primary:hover { opacity: .9; transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.btn-secondary { background: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--accent-cyan); }
.btn-danger { background: var(--accent-red); color: #fff; }
.btn-danger:hover { opacity: .85; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-input, .form-select {
  width: 100%; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-primary); color: var(--text-primary); font-size: 14px;
  outline: none; transition: border-color .2s;
}
.form-input:focus, .form-select:focus { border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.form-error { color: var(--accent-red); font-size: 12px; margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* Auth pages */
.auth-page {
  display: flex; justify-content: center; align-items: center;
  min-height: 100vh; padding: 20px;
}
.auth-card {
  width: 100%; max-width: 420px; padding: 40px;
  background: var(--bg-secondary); border-radius: 16px;
  border: 1px solid var(--border); position: relative; overflow: hidden;
}
.auth-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--gradient-main);
}
.auth-logo { text-align: center; margin-bottom: 32px; }
.auth-logo img { height: 32px; }
.auth-title { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.auth-subtitle { text-align: center; color: var(--text-secondary); font-size: 14px; margin-bottom: 32px; }

/* Flash messages */
.flash-container { position: fixed; top: 80px; right: 24px; z-index: 1000; }
.flash-message {
  padding: 12px 20px; border-radius: 8px; margin-bottom: 8px;
  font-size: 14px; animation: slideIn .3s;
}
.flash-success { background: rgba(0,255,148,0.1); border: 1px solid rgba(0,255,148,0.3); color: var(--accent-green); }
.flash-danger { background: rgba(255,71,87,0.1); border: 1px solid rgba(255,71,87,0.3); color: var(--accent-red); }
.flash-info { background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3); color: var(--accent-cyan); }
.flash-warning { background: rgba(255,165,2,0.1); border: 1px solid rgba(255,165,2,0.3); color: var(--accent-orange); }

/* Charts placeholder */
.chart-container { height: 300px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); }

/* Page header */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-title { font-size: 24px; font-weight: 700; }
.page-subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

/* Filter bar */
.filter-bar { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.filter-bar select, .filter-bar input { padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-primary); color: var(--text-primary); font-size: 13px; }

/* Gradient text */
.gradient-text { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* Tooltip */
.tooltip { position: relative; }
.tooltip::after {
  content: attr(data-tip); position: absolute; bottom: 100%; left: 50%;
  transform: translateX(-50%); padding: 4px 8px; border-radius: 4px;
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-secondary); white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.tooltip:hover::after { opacity: 1; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Animations */
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn .4s; }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px; border: 2px solid var(--border);
  border-top-color: var(--accent-cyan); border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state-text { color: var(--text-secondary); font-size: 16px; }

/* Subscription cards */
.subscription-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-top: 24px; }
.subscription-card {
  background: var(--bg-card); border-radius: 12px; border: 1px solid var(--border);
  padding: 32px; text-align: center; position: relative; overflow: hidden;
}
.subscription-card.featured { border-color: var(--accent-cyan); }
.subscription-card.featured::before {
  content: 'POPULAR'; position: absolute; top: 12px; right: -28px;
  background: var(--gradient-main); color: #fff; font-size: 11px;
  font-weight: 700; padding: 4px 32px; transform: rotate(45deg);
}
.subscription-name { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.subscription-price { font-size: 40px; font-weight: 800; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin: 16px 0; }
.subscription-price span { font-size: 16px; }
.subscription-features { list-style: none; margin: 24px 0; text-align: left; }
.subscription-features li { padding: 8px 0; color: var(--text-secondary); font-size: 14px; display: flex; align-items: center; gap: 8px; }
.subscription-features li::before { content: '✓'; color: var(--accent-green); font-weight: 700; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .content { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .topbar { padding: 12px 16px; }
}