@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: #334155;
  --danger: #ef4444;
  --success: #22c55e;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1rem;
    transition: color 0.2s;
}
.user-nav a:hover {
    color: var(--text-main);
}

h1, h2, h3 {
    margin-bottom: 1rem;
}

.card {
  background-color: var(--bg-card);
  border-radius: 0.75rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    border-color: var(--primary);
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--primary);
  color: white;
  border-radius: 0.375rem;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn:hover {
  background-color: var(--primary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-outline:hover {
    background-color: var(--bg-dark);
    color: var(--text-main);
    border-color: var(--text-main);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}
th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
    margin-bottom: 2rem;
}