:root {
  --primary-blue: #003399;
  --primary-blue-light: #1a4dcc;
  --gold: #FFD700;
  --gold-hover: #e6c200;
  --white: #ffffff;
  --bg-color: #f0f4f8;
  --text-dark: #333333;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.4);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--bg-color);
  background-image: linear-gradient(135deg, #e0eaf5 0%, #f0f4f8 100%);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
}

/* Sidebar Wrapper */
.sidebar {
  width: 260px;
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 2rem 1rem;
  box-shadow: 4px 0 10px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
}

.brand {
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  margin-bottom: 2rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.brand span {
  color: var(--white);
  display: block;
  font-size: 1rem;
  font-weight: 400;
  margin-top: 5px;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nav-links a {
  text-decoration: none;
  color: var(--white);
  padding: 12px 20px;
  border-radius: 8px;
  display: block;
  transition: all 0.3s ease;
  font-weight: 500;
}

.nav-links a:hover, .nav-links a.active {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  transform: translateX(5px);
  border-left: 4px solid var(--gold);
}

/* Main Content Wrapper */
.main-content {
  flex: 1;
  padding: 2rem 3rem;
  overflow-y: auto;
}

header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid rgba(0, 51, 153, 0.1);
}

header h1 {
  color: var(--primary-blue);
  font-size: 2rem;
}

/* Glassmorphism Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 32px 0 rgba(0, 51, 153, 0.05);
  margin-bottom: 2rem;
}

/* FORM STYLING */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary-blue);
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.9);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 51, 153, 0.2);
}

/* Three Columns Grid for Row Form */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.btn-submit {
  background-color: var(--primary-blue);
  color: var(--white);
  border: 1px solid var(--primary-blue);
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 100%;
  text-transform: uppercase;
  margin-top: 1rem;
}

.btn-submit:hover {
  background-color: var(--primary-blue-light);
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 51, 153, 0.2);
}

/* TABLES */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

th, td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

th {
  background-color: var(--primary-blue);
  color: var(--white);
  font-weight: 600;
}

tr:hover {
  background-color: #f9f9f9;
}

/* DASHBOARD METRICS */
.metrics-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.metric-card {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 15px rgba(0,51,153,0.2);
}

.metric-card h3 {
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  color: rgba(255,255,255,0.8);
}

.metric-card.gold-card {
  background: var(--white);
  color: var(--primary-blue);
  border: 2px solid var(--gold);
}

.metric-card h2 {
  font-size: 2.5rem;
  font-weight: bold;
}