:root {
  --bg: #0f1115;
  --panel: #161923;
  --panel-2: #1d2130;
  --border: #2a2f3f;
  --text: #e6e8ee;
  --muted: #9aa0b0;
  --accent: #4f7cff;
  --accent-2: #2fd0a0;
  --danger: #ef5a6f;
  --warning: #f2b84b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

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

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  flex-shrink: 0;
}

.sidebar h1 { font-size: 16px; margin: 0 0 24px; color: var(--text); }
.sidebar nav a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  margin-bottom: 2px;
}
.sidebar nav a:hover, .sidebar nav a.active {
  background: var(--panel-2);
  color: var(--text);
  text-decoration: none;
}

.main { flex: 1; padding: 28px 32px; max-width: 1200px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-4, .grid-2 { grid-template-columns: 1fr; } }

.stat-label { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.stat-value { font-size: 26px; font-weight: 600; }
.stat-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tr:hover td { background: var(--panel-2); }

.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 500; }
.badge-brouillon { background: #2a2f3f; color: var(--muted); }
.badge-envoyee { background: rgba(79,124,255,.15); color: var(--accent); }
.badge-recue { background: rgba(79,124,255,.15); color: var(--accent); }
.badge-payee { background: rgba(47,208,160,.15); color: var(--accent-2); }
.badge-en_retard { background: rgba(239,90,111,.15); color: var(--danger); }
.badge-annulee { background: #2a2f3f; color: var(--muted); }

.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 9px 16px;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { opacity: .9; text-decoration: none; }
.btn-secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: var(--danger); }

input, select, textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 11px;
  color: var(--text);
  font-size: 14px;
}
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 5px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash-error { background: rgba(239,90,111,.15); color: var(--danger); border: 1px solid rgba(239,90,111,.3); }
.flash-success { background: rgba(47,208,160,.15); color: var(--accent-2); border: 1px solid rgba(47,208,160,.3); }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { width: 360px; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--muted);
}

.tag-review { color: var(--warning); font-size: 12px; }