:root {
  --bg-dark: #0A0F1C;
  --bg-card: #151C2C;
  --text-main: #E2E8F0;
  --text-sub: #94A3B8;
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --border: #1E293B;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: #fff; font-weight: 600; }

.hidden { display: none !important; }

/* Layout */
#app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 250px;
  background-color: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-item {
  padding: 12px 16px;
  margin-bottom: 8px;
  color: var(--text-sub);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nav-item.active {
  background-color: rgba(59, 130, 246, 0.15);
  color: var(--primary);
  border-left: 3px solid var(--primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 30px 40px;
  overflow-y: auto;
}

.page-header {
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background-color: var(--bg-card);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.5);
}

.stat-title {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
}

.stat-value.primary { color: var(--primary); }
.stat-value.success { color: var(--success); }
.stat-value.danger { color: var(--danger); }

/* Charts */
.chart-container {
  background-color: var(--bg-card);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 30px;
  box-shadow: var(--card-shadow);
}
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

/* Tables */
.table-container {
  background-color: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-sub);
  font-weight: 600;
  padding: 16px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  font-size: 14px;
}

tr:last-child td { border-bottom: none; }

tr:hover td { background-color: rgba(255, 255, 255, 0.02); }

/* Badges */
.badge {
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
}

.badge-open { background-color: rgba(239, 68, 68, 0.2); color: #FCA5A5; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-fixing { background-color: rgba(245, 158, 11, 0.2); color: #FCD34D; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-resolved { background-color: rgba(16, 185, 129, 0.2); color: #6EE7B7; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-ignored { background-color: rgba(148, 163, 184, 0.2); color: #CBD5E1; border: 1px solid rgba(148, 163, 184, 0.3); }

/* Buttons & Inputs */
.btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn:hover { background-color: var(--primary-hover); }

.btn-small { padding: 6px 12px; font-size: 13px; }

input, select, textarea {
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  color: white;
  padding: 10px 14px;
  border-radius: 6px;
  outline: none;
  font-family: inherit;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background-color: var(--bg-card);
  padding: 30px;
  border-radius: 16px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

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

pre.stacktrace {
  background-color: rgba(0,0,0,0.4);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'Consolas', monospace;
  font-size: 13px;
  color: #E2E8F0;
  border: 1px solid var(--border);
}

/* Login */
#login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: radial-gradient(circle at center, #1E293B 0%, var(--bg-dark) 100%);
}

.login-box {
  background-color: var(--bg-card);
  padding: 40px;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-box h2 {
  margin-bottom: 24px;
}

.login-box input {
  margin-bottom: 16px;
}

.login-box button {
  width: 100%;
}