/* Variables & reset */
:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-muted: #f4f4f2;
  --color-border: #e4e4e0;
  --color-text: #1a1a18;
  --color-text-muted: #6b6b66;
  --color-accent: #2c4a3e;
  --color-accent-light: #e8f0ec;
  --color-danger: #c0392b;
  --color-danger-bg: #fdf0ee;
  --color-success: #2c6e49;
  --color-success-bg: #edf7f0;
  --color-warning: #b8860b;
  --radius: 0;
  --radius-lg: 0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Liberation Mono', monospace;
  --max-width: 860px;
  --max-width-wide: 1100px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

/* Typography */
h1, h2, h3 {
  line-height: 1.25;
  font-weight: 600;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; }

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container--wide {
  max-width: var(--max-width-wide);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: #1e3329;
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

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

.btn--danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border-color: #f5c6c0;
}

.btn--danger:hover {
  background: #fce4e1;
}

.btn--sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn--icon {
  padding: 0.45rem;
  min-width: 2rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 5rem;
}

.form-row {
  display: grid;
  gap: 1rem;
}

@media (min-width: 600px) {
  .form-row--2 { grid-template-columns: 1fr 1fr; }
  .form-row--3 { grid-template-columns: 1fr 1fr 1fr; }
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.card + .card {
  margin-top: 1.25rem;
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 0;
  white-space: nowrap;
}

.badge--en_cours {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.badge--en_pause {
  background: #fef9e7;
  color: var(--color-warning);
}

.badge--termine {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge--done {
  background: #e8e8e4;
  color: var(--color-text-muted);
}

.badge--feedback-pending {
  background: #fef3e0;
  color: #b45309;
  font-weight: 600;
}

.badge--unused {
  background: #efefec;
  color: #a8a8a2;
  font-weight: 500;
}

.badge--over {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--color-text);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast--error {
  background: var(--color-danger);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
}

.empty-state p {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

/* File list */
.file-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.file-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  padding: 0.3rem 0;
}

.file-list a::before {
  content: '↓';
  font-size: 0.75rem;
  opacity: 0.6;
}

.file-list .file-unavailable {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* Utility */
.text-muted { color: var(--color-text-muted); }
.text-danger { color: var(--color-danger); }
.text-sm { font-size: 0.875rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}