:root {
  --bg: #f8fafc;
  --surface: rgba(255, 255, 255, 0.85);
  --surface-solid: #ffffff;
  --surface-light: rgba(241, 245, 249, 0.7);
  --border: rgba(226, 232, 240, 0.8);
  --accent: #0284c7;
  --accent-alt: #38bdf8;
  --accent-glow: rgba(2, 132, 199, 0.15);
  --text: #000000;
  --text-dim: #334155;
  --danger: #e11d48;
  --success: #059669;
  --warning: #d97706;
  --radius: 16px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --sidebar-width: 260px;
}

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

body {
  background: var(--bg);
  background-image: 
    radial-gradient(circle at 0% 0%, rgba(79, 172, 254, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 100% 100%, rgba(0, 242, 254, 0.05) 0%, transparent 50%);
  color: var(--text);
  font-family: 'Outfit', 'Inter', sans-serif;
  font-size: 14px;
  min-height: 100vh;
  line-height: 1.6;
}

/* Glassmorphism utility */
.glass {
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  border-right: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 15px var(--accent-glow);
}

.logo-text {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.3s ease;
  margin-bottom: 4px;
  cursor: pointer;
}

.nav-item:hover, .nav-item.active {
  background: var(--surface-light);
  color: var(--accent);
}

.nav-item.active {
  box-shadow: inset 0 0 10px rgba(0, 242, 254, 0.1);
}

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 32px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.welcome-text h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}

.welcome-text p {
  color: var(--text-dim);
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.kpi-card {
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.kpi-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.2;
}

.kpi-icon {
  font-size: 24px;
  margin-bottom: 16px;
}

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

.kpi-value {
  font-size: 32px;
  font-weight: 700;
  margin: 8px 0;
}

/* Charts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.chart-card {
  padding: 24px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: #fff;
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* Company Selector Styling */
#company-selector {
    appearance: auto;
    background: var(--surface-light) !important;
    color: var(--text) !important;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 20px;
    width: 100%;
    cursor: pointer;
    font-weight: 500;
    outline: none;
}

#company-selector option {
    background: var(--surface-solid);
    color: var(--text);
}