:root {
  --bg: #f5f6f4; --surface: #fff; --text: #1d2521; --muted: #5d6a63; --line: #dfe3df;
  --accent: #1f6b52; --accent-text: #fff; --danger: #b3261e;
  --ok-bg: #dff2e8; --ok-text: #14573f; --warn-bg: #fdf0d0; --warn-text: #6f4e00; --bad-bg: #fbe1df; --bad-text: #8f1d17;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816; --surface: #1e2421; --text: #e8ece9; --muted: #a0aca5; --line: #333b37;
    --accent: #58c09a; --accent-text: #0b1a14; --danger: #f2877f;
    --ok-bg: #173a2c; --ok-text: #a4e3c8; --warn-bg: #40320f; --warn-text: #f4d58a; --bad-bg: #47201d; --bad-text: #f7b8b3;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
body.center { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: .5rem 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .5rem; }
p { margin: .4rem 0; }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1rem; padding: .6rem 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.top nav { display: flex; flex-wrap: wrap; gap: .1rem .8rem; flex: 1; }
.top nav a { text-decoration: none; color: var(--text); padding: .25rem 0; }
.top nav a[aria-current] { color: var(--accent); font-weight: 600; border-bottom: 2px solid var(--accent); }
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.login { width: min(100%, 360px); }
.scroll { overflow-x: auto; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.stat span { display: block; color: var(--muted); font-size: .9rem; }
.stat strong { font-size: 1.5rem; font-variant-numeric: tabular-nums; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--muted); font-weight: 600; font-size: .85rem; }
th, td { padding: .5rem .6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.cancelled td { color: var(--muted); }
.muted { color: var(--muted); }
.pre { white-space: pre-wrap; }
small { display: block; color: var(--muted); font-weight: 400; }
label { display: block; font-weight: 600; font-size: .9rem; }
label.check { display: flex; gap: .5rem; align-items: center; font-weight: 400; }
label.check input { width: auto; }
input, select, textarea { width: 100%; font: inherit; padding: .5rem .6rem; margin-top: .2rem; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
button, .button { display: inline-block; font: inherit; font-weight: 600; padding: .5rem .9rem; border: 1px solid var(--accent); border-radius: 6px; background: var(--accent); color: var(--accent-text); cursor: pointer; text-decoration: none; }
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.danger { color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; font-weight: 400; }
button.link.danger { color: var(--danger); }
button:disabled { opacity: .6; cursor: wait; }
.form > * + * { margin-top: .75rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.inline { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; margin-top: .75rem; }
.inline label { flex: 1 1 180px; }
.line { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; justify-content: space-between; padding: .25rem 0; }
.line select { width: auto; flex: 1 1 180px; margin: 0; }
.split { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: space-between; align-items: center; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-top: .6rem; }
.item { padding: .6rem 0; border-top: 1px solid var(--line); }
.item .row { margin-top: .2rem; }
.tag { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .8rem; font-weight: 600; }
.tag.paye { background: var(--ok-bg); color: var(--ok-text); }
.tag.partiel, .tag.attente { background: var(--warn-bg); color: var(--warn-text); }
.tag.retard { background: var(--bad-bg); color: var(--bad-text); }
.flash { padding: .6rem .8rem; border-radius: 6px; background: var(--ok-bg); color: var(--ok-text); }
.flash.error { background: var(--bad-bg); color: var(--bad-text); }
.flash a { color: inherit; }
.photos { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.photos figure { margin: 0; }
.photos img { width: 100%; height: 120px; object-fit: cover; border-radius: 6px; display: block; }
.photos figcaption { font-size: .85rem; color: var(--muted); }
img.meter { max-width: 100%; max-height: 420px; border-radius: 6px; display: block; margin: 0 auto .75rem; }
.signatures { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
canvas { width: 100%; height: auto; display: block; background: #fff; border: 1px solid var(--line); border-radius: 6px; touch-action: none; margin-top: .3rem; }
img.signature { width: 100%; max-width: 300px; background: #fff; border-radius: 6px; display: block; margin-top: .3rem; }
@media (max-width: 760px) {
  .top { justify-content: space-between; }
  .top nav { order: 3; flex: 0 0 100%; flex-wrap: nowrap; overflow-x: auto; gap: 1rem; padding-bottom: .15rem; }
  .top nav a { white-space: nowrap; }
}
@media (max-width: 520px) { .row { grid-template-columns: 1fr; } }