/* Base styles - Variables et styles généraux */

:root {
  --psu-blue: #1565c0;
  --psu-red: #b71c1c;
  --psu-green: #2e7d32;
  --psu-muted: #666;
  --psu-bg: #f5f5f5;
  --psu-card-bg: #fafafa;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.5;
  color: #333;
  margin: 0;
  padding: 0;
  background: var(--psu-bg);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 1rem;
  font-weight: 600;
  color: #333;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p {
  margin: 0 0 1rem;
}

a {
  color: var(--psu-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.psu-muted {
  color: var(--psu-muted);
  font-size: 0.9rem;
}

.psu-small {
  font-size: 0.8rem;
  color: var(--psu-muted);
}

.psu-center {
  text-align: center;
}

.psu-right {
  text-align: right;
}

.psu-left {
  text-align: left;
}

.psu-hidden {
  display: none;
}

.psu-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}