:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #15181e;
  --ink-2: #4a5160;
  --ink-3: #7c8494;
  --line: #e3e6eb;
  --accent: #2f6fed;
  --accent-soft: #e8efff;
  --new: #e5484d;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
  --c-presse: #8e4ec6;
  --c-systeme: #e5484d;
  --c-devops: #f76b15;
  --c-stockage: #12a594;
  --c-reseau: #2f6fed;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #171a21;
    --ink: #e8eaee;
    --ink-2: #b2b8c3;
    --ink-3: #7d8594;
    --line: #262b35;
    --accent: #6b9bff;
    --accent-soft: #1b2640;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; }
button { font: inherit; color: inherit; }
.muted { color: var(--ink-3); }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-inner { display: flex; align-items: center; gap: 24px; padding-top: 16px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.logo {
  width: 36px; height: 36px; border-radius: 10px; flex: none;
  background: var(--accent) url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><path d='M8 22a14 14 0 0 1 14-14M8 16a8 8 0 0 1 8-8' stroke='white' stroke-width='3' fill='none' stroke-linecap='round'/><circle cx='9' cy='23' r='2.5' fill='white'/></svg>") center/26px no-repeat;
}
h1 { font-size: 18px; margin: 0; letter-spacing: -.01em; }
.brand p { margin: 0; font-size: 13px; }
.search { position: relative; width: min(360px, 42vw); }
.search svg { position: absolute; left: 11px; top: 50%; width: 16px; height: 16px; transform: translateY(-50%); fill: none; stroke: var(--ink-3); stroke-width: 2; stroke-linecap: round; }
.search input {
  width: 100%; padding: 9px 12px 9px 34px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink); font: inherit; outline: none;
}
.search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.tabs { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; padding-bottom: 0; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: 0; background: none; cursor: pointer; white-space: nowrap;
  padding: 10px 12px; font-size: 14px; color: var(--ink-2);
  border-bottom: 2px solid transparent; display: inline-flex; align-items: center; gap: 7px;
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.tab .dot { width: 8px; height: 8px; border-radius: 50%; }
.tab .n { font-size: 12px; color: var(--ink-3); font-weight: 400; font-variant-numeric: tabular-nums; }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 260px 1fr; gap: 32px; padding-top: 24px; padding-bottom: 24px; align-items: start; }
.side { position: sticky; top: 132px; max-height: calc(100vh - 150px); overflow: auto; padding-right: 4px; }
.side section { margin-bottom: 24px; }
.side h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); margin: 0 0 10px; font-weight: 600; }
.hint { font-size: 12px; color: var(--ink-3); margin: 6px 0 0; }

.seg { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.seg button { border: 0; background: none; padding: 6px 0; border-radius: 7px; cursor: pointer; font-size: 13px; color: var(--ink-2); }
.seg button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 14px; }
.switch input { position: absolute; opacity: 0; }
.track { width: 34px; height: 20px; border-radius: 20px; background: var(--line); position: relative; transition: background .15s; flex: none; }
.track::after { content: ""; position: absolute; left: 2px; top: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(14px); }
.switch input:focus-visible + .track { outline: 2px solid var(--accent); outline-offset: 2px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--line); background: var(--panel); border-radius: 999px;
  padding: 3px 10px; font-size: 12.5px; cursor: pointer; color: var(--ink-2);
}
.chip:hover { border-color: var(--ink-3); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip .n { opacity: .65; margin-left: 3px; font-variant-numeric: tabular-nums; }
.chip:disabled { opacity: .4; cursor: default; }

.sources { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.sources li { display: flex; align-items: center; gap: 8px; padding: 4px 6px; border-radius: 6px; cursor: pointer; color: var(--ink-2); }
.sources li:hover { background: var(--panel); }
.sources li[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.sources img { width: 14px; height: 14px; border-radius: 3px; flex: none; }
.sources .nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sources .st { font-size: 11px; font-variant-numeric: tabular-nums; color: var(--ink-3); }
.sources .err { color: var(--new); }

/* ---------- Feed ---------- */
.feed-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
.feed-head p { margin: 0; font-size: 13px; }
.link { border: 0; background: none; color: var(--accent); cursor: pointer; font-size: 13px; padding: 0; }
.day { font-size: 13px; font-weight: 600; color: var(--ink-2); margin: 22px 0 10px; display: flex; align-items: center; gap: 10px; }
.day::after { content: ""; height: 1px; background: var(--line); flex: 1; }

.card {
  display: grid; grid-template-columns: 4px 1fr; gap: 0;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); margin-bottom: 10px; overflow: hidden;
  transition: border-color .12s, transform .12s;
}
.card:hover { border-color: color-mix(in srgb, var(--ink-3) 50%, var(--line)); }
.card .bar { background: var(--cat, var(--line)); }
.card .body { padding: 14px 18px 14px 16px; min-width: 0; }
.meta { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-3); flex-wrap: wrap; }
.meta img { width: 16px; height: 16px; border-radius: 4px; }
.meta .src { color: var(--ink-2); font-weight: 600; }
.meta .new { color: var(--new); font-weight: 700; font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
.card h3 { font-size: 16px; line-height: 1.35; margin: 6px 0 4px; letter-spacing: -.005em; }
.card h3 a { text-decoration: none; }
.card h3 a:hover { text-decoration: underline; text-underline-offset: 3px; }
.card h3 a:visited { color: var(--ink-2); }
.card p.sum { margin: 0; color: var(--ink-2); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card .tags { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.card .tags button { border: 0; background: var(--accent-soft); color: var(--accent); border-radius: 6px; padding: 1px 8px; font-size: 12px; cursor: pointer; font-weight: 600; }

.empty { text-align: center; padding: 60px 0; color: var(--ink-3); }
.foot { display: flex; gap: 8px; flex-wrap: wrap; font-size: 12px; padding-top: 12px; padding-bottom: 32px; border-top: 1px solid var(--line); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .wrap { padding: 0 14px; }
  .layout { grid-template-columns: 1fr; gap: 8px; padding-top: 14px; }
  .side { position: static; max-height: none; overflow: visible; display: grid; gap: 14px; }
  .side section { margin: 0; }
  .side section:last-child { display: none; }
  .top-inner { flex-wrap: wrap; gap: 10px; }
  .search { width: 100%; }
  .brand p { display: none; }
}