:root {
    --ground:      #F5F7F6;
    --surface:     #FFFFFF;
    --surface-alt: #EDF2F1;
    --ink:         #142327;
    --ink-soft:    #4E6268;
    --ink-faint:   #7C8E92;
    --rule:        #D6E0DE;
    --rule-soft:   #E6ECEA;
    --accent:      #0E6E76;
    --accent-deep: #0A5057;
    --accent-wash: #DDEAE9;
    --flag:        #A2502A;
    --flag-wash:   #F6E9E1;
    --shadow:      0 1px 2px rgba(20, 35, 39, .06), 0 8px 24px -12px rgba(20, 35, 39, .18);
    --shadow-lift: 0 2px 6px rgba(20, 35, 39, .08), 0 18px 42px -18px rgba(20, 35, 39, .34);

    --arnaud:      #0E6E76;
    --arnaud-wash: #DDEAE9;
    --client:      #A2502A;
    --client-wash: #F6E9E1;
    --veil:        rgba(20, 35, 39, .42);
    --bar:         rgba(245, 247, 246, .88);

    --sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    --serif: Cambria, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --mono: "Cascadia Mono", Consolas, "SF Mono", ui-monospace, "Liberation Mono", monospace;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground:      #0F1A1D;
      --surface:     #162428;
      --surface-alt: #1C2E33;
      --ink:         #E3EBEA;
      --ink-soft:    #A3B4B7;
      --ink-faint:   #7A8C90;
      --rule:        #2A3F45;
      --rule-soft:   #223338;
      --accent:      #56B7BD;
      --accent-deep: #8AD3D7;
      --accent-wash: #17383B;
      --flag:        #D98A5C;
      --flag-wash:   #33241C;
      --shadow:      0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);
      --shadow-lift: 0 2px 6px rgba(0, 0, 0, .4), 0 18px 42px -18px rgba(0, 0, 0, .8);

      --arnaud:      #56B7BD;
      --arnaud-wash: #17383B;
      --client:      #D98A5C;
      --client-wash: #33241C;
      --veil:        rgba(0, 0, 0, .58);
      --bar:         rgba(15, 26, 29, .88);
    }
  }

  :root[data-theme="dark"] {
    --ground:      #0F1A1D;
    --surface:     #162428;
    --surface-alt: #1C2E33;
    --ink:         #E3EBEA;
    --ink-soft:    #A3B4B7;
    --ink-faint:   #7A8C90;
    --rule:        #2A3F45;
    --rule-soft:   #223338;
    --accent:      #56B7BD;
    --accent-deep: #8AD3D7;
    --accent-wash: #17383B;
    --flag:        #D98A5C;
    --flag-wash:   #33241C;
    --shadow:      0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);
    --shadow-lift: 0 2px 6px rgba(0, 0, 0, .4), 0 18px 42px -18px rgba(0, 0, 0, .8);

    --arnaud:      #56B7BD;
    --arnaud-wash: #17383B;
    --client:      #D98A5C;
    --client-wash: #33241C;
    --veil:        rgba(0, 0, 0, .58);
    --bar:         rgba(15, 26, 29, .88);
  }

  * { box-sizing: border-box; }

  body {
    background: var(--ground);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.68;
    margin: 0;
    padding: 0 1.5rem 6rem;
    -webkit-font-smoothing: antialiased;
  }

  .page { max-width: 44rem; margin: 0 auto; }

  a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
  a:focus-visible, summary:focus-visible, button:focus-visible,
  input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
  }

  /* ================= barre d'outils ================= */

  .toolbar {
    position: sticky;
    top: 0;
    z-index: 40;
    margin: 0 -1.5rem;
    padding: .55rem 1.5rem;
    background: var(--bar);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--rule);
  }
  .toolbar-in {
    max-width: 44rem;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem .7rem;
    font-family: var(--sans);
    font-size: .82rem;
  }

  .who-label {
    font-family: var(--mono);
    font-size: .66rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--ink-faint);
  }

  .idpick { display: flex; gap: .3rem; }

  .btn {
    font-family: var(--sans);
    font-size: .8rem;
    font-weight: 600;
    color: var(--ink-soft);
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 3px;
    padding: .32rem .68rem;
    cursor: pointer;
    line-height: 1.4;
    transition: background .12s, border-color .12s, color .12s;
  }
  .btn:hover { border-color: var(--ink-faint); color: var(--ink); }
  .btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--surface); }
  .btn.tiny { font-size: .72rem; padding: .2rem .5rem; font-weight: 500; }
  .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--surface); }
  .btn.primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: var(--surface); }
  .btn.ghost { background: transparent; }
  .btn:disabled { opacity: .45; cursor: not-allowed; }

  .idpick .btn[data-id="arnaud"][aria-pressed="true"] { background: var(--arnaud); border-color: var(--arnaud); }
  .idpick .btn[data-id="client"][aria-pressed="true"] { background: var(--client); border-color: var(--client); }

  .spacer { flex: 1 1 auto; }

  .tally {
    font-family: var(--mono);
    font-size: .7rem;
    color: var(--ink-faint);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  /* ================= masthead ================= */

  .masthead {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    padding: 3.5rem 0 2.25rem;
    border-bottom: 2px solid var(--ink);
  }

  .eyebrow {
    font-family: var(--mono);
    font-size: .72rem;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0;
  }

  h1 {
    font-family: var(--sans);
    font-weight: 600;
    font-size: clamp(2.1rem, 6vw, 3rem);
    line-height: 1.08;
    letter-spacing: -.022em;
    text-wrap: balance;
    margin: 0;
  }

  .standfirst { font-size: 1.14rem; color: var(--ink-soft); margin: 0; max-width: 34rem; }

  .meta {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem 1.75rem;
    font-family: var(--mono);
    font-size: .74rem;
    color: var(--ink-faint);
    letter-spacing: .02em;
    padding-top: .5rem;
  }
  .meta b { color: var(--ink-soft); font-weight: 600; }

  /* ================= sommaire ================= */

  .toc {
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 3px;
    padding: 1.4rem 1.6rem;
    margin: 2.5rem 0 0;
    box-shadow: var(--shadow);
  }
  .toc h2 {
    font-family: var(--mono);
    font-size: .72rem;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: var(--ink-faint);
    font-weight: 500;
    margin: 0 0 .9rem;
  }
  .toc ol {
    list-style: none; margin: 0; padding: 0;
    display: grid; gap: .45rem;
    counter-reset: toc;
    font-family: var(--sans); font-size: .95rem;
  }
  .toc li { counter-increment: toc; display: flex; gap: .85rem; align-items: baseline; }
  .toc li::before {
    content: counter(toc);
    font-family: var(--mono); font-size: .74rem;
    color: var(--accent); min-width: 1.1rem;
  }
  .toc a { color: var(--ink); text-decoration: none; }
  .toc a:hover { color: var(--accent); text-decoration: underline; }

  /* ================= sections ================= */

  section { padding-top: 3.6rem; }

  .sec-head {
    display: grid;
    grid-template-columns: 2.75rem 1fr;
    align-items: baseline;
    gap: 0 .9rem;
    border-top: 1px solid var(--rule);
    padding-top: 1.1rem;
    margin-bottom: 1.4rem;
  }
  .sec-num { font-family: var(--mono); font-size: .8rem; color: var(--accent); letter-spacing: .04em; }
  .sec-head h2 {
    font-family: var(--sans); font-weight: 600;
    font-size: 1.62rem; letter-spacing: -.018em; line-height: 1.2;
    text-wrap: balance; margin: 0;
  }

  h3 {
    font-family: var(--sans); font-weight: 600;
    font-size: 1.06rem; letter-spacing: -.008em;
    margin: 2.2rem 0 .6rem; color: var(--ink);
  }

  p { margin: 0 0 1.05rem; }
  p:last-child { margin-bottom: 0; }
  strong { font-weight: 700; }

  ul.plain { margin: 0 0 1.05rem; padding-left: 1.15rem; display: grid; gap: .5rem; }
  ul.plain li { padding-left: .2rem; }
  ul.plain li::marker { color: var(--accent); }

  .publics { display: grid; gap: 1rem; margin: 1.4rem 0 .4rem; }
  .public {
    background: var(--surface); border: 1px solid var(--rule);
    border-radius: 3px; padding: 1.15rem 1.3rem;
    display: grid; gap: .45rem;
  }
  .public h3 { margin: 0; font-size: 1rem; display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap; }
  .public .who {
    font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
    letter-spacing: .1em; color: var(--ink-faint); font-weight: 400;
  }
  .public p { font-size: .96rem; margin: 0; color: var(--ink-soft); }

  .journey { display: grid; gap: 0; margin: 1.6rem 0 .5rem; }
  .step { display: grid; grid-template-columns: 2.75rem 1fr; gap: 0 .9rem; position: relative; padding-bottom: 1.9rem; }
  .step:last-child { padding-bottom: 0; }
  .step::before {
    content: ""; position: absolute; left: 1.03rem; top: 1.75rem; bottom: -.1rem;
    width: 1px; background: var(--rule);
  }
  .step:last-child::before { display: none; }
  .step-dot {
    font-family: var(--mono); font-size: .72rem; color: var(--surface);
    background: var(--accent); width: 2.1rem; height: 2.1rem; border-radius: 50%;
    display: grid; place-items: center; z-index: 1; font-weight: 600;
  }
  .step-body { padding-top: .18rem; }
  .step-body h3 { margin: 0 0 .4rem; font-size: 1.04rem; }
  .step-body p { font-size: .98rem; margin: 0 0 .7rem; }
  .step-body p:last-child { margin-bottom: 0; }
  .actor {
    font-family: var(--mono); font-size: .66rem; text-transform: uppercase;
    letter-spacing: .1em; color: var(--accent-deep); background: var(--accent-wash);
    padding: .12rem .5rem; border-radius: 2px; display: inline-block; margin-bottom: .45rem;
  }

  .states { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.2rem 0 1.4rem; }
  .pill {
    font-family: var(--mono); font-size: .74rem; letter-spacing: .02em;
    border: 1px solid var(--rule); background: var(--surface); color: var(--ink-soft);
    padding: .28rem .65rem; border-radius: 2px; white-space: nowrap;
  }
  .pill.live { border-color: var(--accent); color: var(--accent-deep); background: var(--accent-wash); font-weight: 600; }

  .flagbox {
    background: var(--flag-wash); border-left: 3px solid var(--flag);
    border-radius: 0 3px 3px 0; padding: 1rem 1.25rem; margin: 1.5rem 0;
    display: grid; gap: .4rem;
  }
  .flagbox .label {
    font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
    letter-spacing: .11em; color: var(--flag); font-weight: 600;
  }
  .flagbox p { font-size: .96rem; margin: 0; }

  .notebox {
    background: var(--surface-alt); border-radius: 3px; padding: 1rem 1.25rem;
    margin: 1.5rem 0; font-size: .96rem; display: grid; gap: .4rem;
  }
  .notebox .label {
    font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
    letter-spacing: .11em; color: var(--ink-faint); font-weight: 600;
  }
  .notebox p { font-size: .96rem; margin: 0; }

  .tablewrap { overflow-x: auto; margin: 1.4rem 0; }
  table {
    border-collapse: collapse; width: 100%;
    font-family: var(--sans); font-size: .93rem;
    font-variant-numeric: tabular-nums; min-width: 30rem;
  }
  th, td { text-align: left; padding: .62rem .8rem; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
  th {
    font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
    letter-spacing: .09em; color: var(--ink-faint); font-weight: 500;
    border-bottom: 1px solid var(--rule);
  }
  td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }
  tr:last-child td { border-bottom: none; }

  .out { display: grid; gap: .7rem; margin: 1.3rem 0; padding: 0; list-style: none; }
  .out li { display: grid; grid-template-columns: 1.4rem 1fr; gap: .6rem; font-size: .97rem; align-items: baseline; }
  .out li::before { content: "—"; color: var(--flag); font-family: var(--mono); font-size: .85rem; }

  .questions { counter-reset: q; display: grid; gap: 1rem; margin: 1.4rem 0 0; padding: 0; list-style: none; }
  .questions li {
    counter-increment: q; background: var(--surface); border: 1px solid var(--rule);
    border-radius: 3px; padding: 1rem 1.25rem 1rem 3.1rem; position: relative; font-size: .97rem;
  }
  .questions li::before {
    content: "Q" counter(q); position: absolute; left: 1.1rem; top: 1rem;
    font-family: var(--mono); font-size: .74rem; color: var(--accent); font-weight: 600;
  }
  .questions .ask { display: block; font-family: var(--sans); font-weight: 600; margin-bottom: .25rem; }
  .questions .why { color: var(--ink-soft); font-size: .93rem; }

  footer {
    margin-top: 4rem; padding-top: 1.4rem; border-top: 1px solid var(--rule);
    font-family: var(--mono); font-size: .74rem; color: var(--ink-faint); line-height: 1.7;
  }

  /* ================= annotation ================= */

  .ablock { position: relative; }

  .ablock[data-edited] > .btext {
    background: linear-gradient(transparent 82%, var(--edit-wash, var(--accent-wash)) 82%);
  }
  .ablock[data-edited="arnaud"] { --edit-wash: var(--arnaud-wash); }
  .ablock[data-edited="client"] { --edit-wash: var(--client-wash); }

  .btext[contenteditable="true"] {
    display: block;
    background: var(--surface);
    outline: 2px solid var(--accent);
    outline-offset: 4px;
    border-radius: 2px;
    background-image: none !important;
  }

  /* le bloc peut être une grille (.out li) ou un flex (.public h3) :
     la zone d'annotation doit alors occuper sa propre ligne entière */
  .ablock > .bmeta { display: block; grid-column: 1 / -1; flex-basis: 100%; }
  .bctl {
    display: none;
    gap: .3rem;
    margin-top: .3rem;
    flex-wrap: wrap;
  }
  body[data-annot="on"] .ablock:hover > .bmeta > .bctl,
  body[data-annot="on"] .ablock:focus-within > .bmeta > .bctl,
  .ablock[data-open] > .bmeta > .bctl { display: flex; }

  .badges { display: flex; gap: .35rem; flex-wrap: wrap; margin-top: .35rem; }
  .badges:empty { display: none; }
  .badge {
    font-family: var(--mono); font-size: .64rem; letter-spacing: .06em;
    text-transform: uppercase; padding: .1rem .42rem; border-radius: 2px;
    border: 1px solid currentColor; cursor: pointer;
    background: transparent; line-height: 1.6;
  }
  .badge.b-arnaud { color: var(--arnaud); }
  .badge.b-client { color: var(--client); }
  .badge.b-note { color: var(--ink-faint); }

  .bthread { display: grid; gap: .5rem; margin: .55rem 0 .2rem; }
  .bthread:empty { display: none; }

  .cmt {
    display: block;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-left: 3px solid var(--rule);
    border-radius: 0 3px 3px 0;
    padding: .55rem .75rem;
    font-family: var(--sans);
    font-size: .88rem;
    line-height: 1.55;
  }
  .cmt.c-arnaud { border-left-color: var(--arnaud); }
  .cmt.c-client { border-left-color: var(--client); }
  .cmt[data-resolved="1"] { opacity: .5; }
  .cmt-head {
    display: flex; align-items: baseline; gap: .5rem; flex-wrap: wrap;
    font-family: var(--mono); font-size: .64rem; letter-spacing: .05em;
    text-transform: uppercase; color: var(--ink-faint); margin-bottom: .25rem;
  }
  .cmt-who { font-weight: 700; }
  .cmt.c-arnaud .cmt-who { color: var(--arnaud); }
  .cmt.c-client .cmt-who { color: var(--client); }
  .cmt-body { display: block; color: var(--ink); white-space: pre-wrap; }
  .cmt-acts { display: flex; gap: .4rem; margin-top: .35rem; }

  .composer { display: grid; gap: .4rem; margin: .5rem 0; }
  .composer textarea {
    width: 100%; min-height: 4.6rem; resize: vertical;
    font-family: var(--sans); font-size: .88rem; line-height: 1.55;
    color: var(--ink); background: var(--surface);
    border: 1px solid var(--rule); border-radius: 3px; padding: .55rem .7rem;
  }
  .composer-acts { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
  .hint { font-family: var(--mono); font-size: .64rem; color: var(--ink-faint); letter-spacing: .04em; }

  .bhist { display: grid; gap: .4rem; margin: .5rem 0 .2rem; }
  .bhist:empty { display: none; }
  .rev {
    display: block; background: var(--surface-alt); border-radius: 3px;
    padding: .5rem .7rem; font-family: var(--sans); font-size: .84rem;
  }
  .rev-head {
    font-family: var(--mono); font-size: .63rem; letter-spacing: .05em;
    text-transform: uppercase; color: var(--ink-faint);
    display: flex; gap: .5rem; flex-wrap: wrap; align-items: baseline; margin-bottom: .25rem;
  }
  .rev-text { display: block; color: var(--ink-soft); }
  .rev-acts { display: flex; gap: .4rem; margin-top: .35rem; }

  @keyframes ping { 0% { background-color: var(--accent-wash); } 100% { background-color: transparent; } }
  .ablock.jump > .btext { animation: ping 1.6s ease-out; border-radius: 3px; }

  body[data-focus="arnaud"] .ablock:not([data-touched~="arnaud"]),
  body[data-focus="client"] .ablock:not([data-touched~="client"]) { opacity: .35; }

  /* ================= panneau d'activité ================= */

  .drawer {
    position: fixed; top: 0; right: 0; bottom: 0; width: min(25rem, 100%);
    background: var(--surface); border-left: 1px solid var(--rule);
    box-shadow: var(--shadow-lift); z-index: 60;
    transform: translateX(101%); transition: transform .22s ease;
    display: flex; flex-direction: column;
  }
  .drawer[data-open="1"] { transform: translateX(0); }
  .drawer-head {
    padding: 1rem 1.1rem .8rem; border-bottom: 1px solid var(--rule);
    display: grid; gap: .7rem;
  }
  .drawer-title {
    display: flex; align-items: center; justify-content: space-between; gap: .7rem;
    font-family: var(--sans); font-weight: 600; font-size: 1rem;
  }
  .filters { display: flex; gap: .3rem; flex-wrap: wrap; }
  .drawer-body { overflow-y: auto; padding: .8rem 1.1rem 2rem; display: grid; gap: .55rem; align-content: start; }

  .ev {
    text-align: left; width: 100%; cursor: pointer;
    background: var(--surface); border: 1px solid var(--rule);
    border-left: 3px solid var(--rule); border-radius: 0 3px 3px 0;
    padding: .55rem .7rem; font-family: var(--sans); font-size: .84rem;
    color: var(--ink); display: grid; gap: .2rem;
  }
  .ev:hover { border-color: var(--ink-faint); }
  .ev.e-arnaud { border-left-color: var(--arnaud); }
  .ev.e-client { border-left-color: var(--client); }
  .ev-head {
    font-family: var(--mono); font-size: .62rem; letter-spacing: .05em;
    text-transform: uppercase; color: var(--ink-faint);
    display: flex; gap: .45rem; flex-wrap: wrap; align-items: baseline;
  }
  .ev.e-arnaud .ev-who { color: var(--arnaud); font-weight: 700; }
  .ev.e-client .ev-who { color: var(--client); font-weight: 700; }
  .ev-txt { color: var(--ink-soft); font-size: .83rem; line-height: 1.5; }
  .ev-src { color: var(--ink-faint); font-size: .78rem; font-style: italic; }
  .empty { color: var(--ink-faint); font-family: var(--sans); font-size: .88rem; padding: 1rem 0; }

  /* ================= modales ================= */

  .veil {
    position: fixed; inset: 0; background: var(--veil); z-index: 70;
    display: none; align-items: center; justify-content: center; padding: 1.5rem;
  }
  .veil[data-open="1"] { display: flex; }
  .modal {
    background: var(--surface); border: 1px solid var(--rule); border-radius: 4px;
    box-shadow: var(--shadow-lift); padding: 1.5rem; width: min(30rem, 100%);
    display: grid; gap: .8rem;
  }
  .modal h2 { font-family: var(--sans); font-size: 1.1rem; font-weight: 600; margin: 0; }
  .modal p { font-family: var(--sans); font-size: .88rem; color: var(--ink-soft); margin: 0; }
  .modal input[type="password"], .modal textarea {
    width: 100%; font-family: var(--sans); font-size: .92rem;
    color: var(--ink); background: var(--ground);
    border: 1px solid var(--rule); border-radius: 3px; padding: .55rem .7rem;
  }
  .modal textarea { font-family: var(--mono); font-size: .74rem; min-height: 9rem; resize: vertical; }
  .modal-acts { display: flex; gap: .5rem; justify-content: flex-end; flex-wrap: wrap; }
  .err { color: var(--flag); font-family: var(--sans); font-size: .82rem; font-weight: 600; min-height: 1.2em; }

  .toast {
    position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%) translateY(1.5rem);
    background: var(--ink); color: var(--ground);
    font-family: var(--sans); font-size: .85rem; font-weight: 500;
    padding: .6rem 1rem; border-radius: 3px; z-index: 80;
    opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
    box-shadow: var(--shadow-lift); max-width: min(28rem, 90vw);
  }
  .toast[data-show="1"] { opacity: 1; transform: translateX(-50%) translateY(0); }

  @media (prefers-reduced-motion: reduce) {
    .drawer, .toast { transition: none; }
    .ablock.jump > .btext { animation: none; outline: 2px solid var(--accent); }
  }

  @media print {
    .toolbar, .drawer, .veil, .toast, .bctl, .composer, .badges { display: none !important; }
    body { padding: 0; }
    .ablock[data-edited] > .btext { background: none; }
  }

  @media (max-width: 34rem) {
    body { font-size: 16.5px; padding: 0 1.1rem 4rem; }
    .toolbar { margin: 0 -1.1rem; padding: .5rem 1.1rem; }
    .sec-head { grid-template-columns: 1fr; gap: .35rem; }
    .step { grid-template-columns: 1.7rem 1fr; gap: 0 .75rem; }
    .step::before { left: .82rem; top: 1.55rem; }
    .step-dot { width: 1.65rem; height: 1.65rem; font-size: .66rem; }
  }