@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

:root {
  /* Brand Colors */
  --primary: #222222;
  --primary-hover: #000000;
  --secondary: #111111;
  
  /* UI Colors */
  --bg-main: #e8ebf0; /* Grey background for main area */
  --bg-card: #ffffff;
  --bg-sidebar: #f4f5f7;
  --bg-topbar: #111111;
  
  --text-main: #333333;
  --text-muted: #666666;
  --text-light: #ffffff;
  --border-color: #d1d5db;
  
  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  
  /* Transitions */
  --transition: all 0.2s ease-in-out;
}

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

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--secondary);
  font-weight: 500;
  line-height: 1.2;
}

h1 { font-size: 2rem; font-weight: 400; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

p {
  color: var(--text-muted);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--primary);
}

/* Forms */
.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: white;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.text-center { text-align: center; }
.w-full { width: 100%; }