:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --surface-2: #efede7;
  --ink: #17160f;
  --ink-2: #57544a;
  --ink-3: #8d897c;
  --line: #e2dfd6;
  --accent: #e8530e;
  --accent-ink: #ffffff;
  --accent-soft: #fde9de;
  --ok: #1f7a4a;
  --ok-soft: #dff1e6;
  --warn: #9a6200;
  --warn-soft: #fbefd5;
  --danger: #b42318;
  --danger-soft: #fde4e1;
  --radius: 12px;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12110e;
    --surface: #1b1a16;
    --surface-2: #24221d;
    --ink: #f1efe8;
    --ink-2: #b6b2a5;
    --ink-3: #7f7b70;
    --line: #2f2d26;
    --accent: #ff6a24;
    --accent-ink: #1a0a02;
    --accent-soft: #3a1d0e;
    --ok: #5fd197;
    --ok-soft: #12301f;
    --warn: #f0b545;
    --warn-soft: #362810;
    --danger: #ff7b6e;
    --danger-soft: #3a1512;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input, select { font: inherit; color: inherit; }
code, .mono { font-family: var(--mono); font-size: 0.92em; }

/* ---------- Commun ---------- */
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; text-decoration: none; font-size: 17px; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); display: grid; place-items: center; color: var(--accent-ink); font-size: 15px; font-weight: 800; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--line); background: var(--surface); border-radius: 9px;
  padding: 8px 14px; cursor: pointer; font-weight: 550; text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent); filter: brightness(1.06); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 13px; border-radius: 7px; }
.btn:disabled { opacity: 0.55; cursor: default; }
.input, .select {
  width: 100%; border: 1px solid var(--line); background: var(--surface); border-radius: 9px; padding: 9px 12px; min-width: 0;
}
.input:focus, .select:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-2); }
.error { color: var(--danger); font-size: 14px; min-height: 1.5em; margin: 0; }
.muted { color: var(--ink-3); }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-accent { background: var(--accent); color: var(--accent-ink); }
.badge-muted { background: var(--surface-2); color: var(--ink-2); }

/* ---------- Landing ---------- */
.lp { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.lp-nav { display: flex; justify-content: space-between; align-items: center; padding: 22px 0; }
.lp-hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; padding: 56px 0 72px; }
.lp-hero h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.02; letter-spacing: -0.035em; margin: 0 0 20px; }
.lp-hero h1 em { font-style: normal; color: var(--accent); }
.lp-hero p.lead { font-size: 19px; color: var(--ink-2); margin: 0 0 28px; max-width: 34ch; }
.addr-demo { display: grid; gap: 8px; font-family: var(--mono); font-size: 14px; }
.addr-demo div { display: flex; gap: 10px; align-items: center; color: var(--ink-2); }
.addr-demo b { color: var(--ink); font-weight: 600; }
.addr-demo span { color: var(--ink-3); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.signup h2 { margin: 0 0 4px; font-size: 20px; letter-spacing: -0.01em; }
.signup form { display: grid; gap: 14px; margin-top: 18px; }
.lp-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 64px; }
.lp-points div { background: var(--surface); padding: 22px; }
.lp-points h3 { margin: 0 0 6px; font-size: 15px; }
.lp-points p { margin: 0; color: var(--ink-2); font-size: 14px; }
.lp-foot { border-top: 1px solid var(--line); padding: 20px 0 32px; color: var(--ink-3); font-size: 13px; }
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.auth-wrap .card { width: 100%; max-width: 380px; }

/* ---------- App ---------- */
.topbar { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.topbar-in { max-width: 1240px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 20px; }
.tabs { display: flex; gap: 2px; background: var(--surface-2); padding: 3px; border-radius: 10px; }
.tab { border: 0; background: transparent; padding: 6px 14px; border-radius: 8px; cursor: pointer; font-weight: 550; color: var(--ink-2); }
.tab[aria-selected='true'] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgb(0 0 0 / 0.08); }
.topbar .me { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--ink-2); }
.page { max-width: 1240px; margin: 0 auto; padding: 24px 20px 60px; }
.page h2 { font-size: 18px; margin: 0 0 4px; letter-spacing: -0.01em; }
.page .sub { margin: 0 0 18px; color: var(--ink-2); font-size: 14px; }

.create { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 0.8fr) auto; gap: 10px; align-items: end; }
.addr-input { display: flex; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); overflow: hidden; }
.addr-input:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }
.addr-input input { border: 0; background: transparent; padding: 9px 12px; flex: 1; min-width: 0; font-family: var(--mono); outline: none; }
.addr-input .at { padding: 9px 12px 9px 0; color: var(--ink-3); font-family: var(--mono); white-space: nowrap; }
.addr-input select { border: 0; background: transparent; font-family: var(--mono); color: var(--ink-3); padding-right: 8px; outline: none; }

.split { display: grid; grid-template-columns: minmax(300px, 400px) minmax(0, 1fr); gap: 20px; margin-top: 20px; align-items: start; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.panel-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.panel-head h3 { margin: 0; font-size: 14px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search { border: 0; background: transparent; outline: none; padding: 0; width: 100%; }

.mb-list { max-height: calc(100vh - 290px); overflow: auto; }
.mb { padding: 12px 16px; border-bottom: 1px solid var(--line); cursor: pointer; display: grid; gap: 4px; }
.mb:last-child { border-bottom: 0; }
.mb:hover { background: var(--surface-2); }
.mb[aria-current='true'] { background: var(--accent-soft); }
.mb-top { display: flex; align-items: center; gap: 8px; }
.mb-addr { font-family: var(--mono); font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; min-width: 0; }
.mb-fwd { font-size: 13px; color: var(--ink-2); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.mb-note { font-size: 12px; color: var(--ink-3); }
.icon-btn { border: 0; background: transparent; cursor: pointer; padding: 3px 6px; border-radius: 6px; color: var(--ink-3); font-size: 13px; }
.icon-btn:hover { background: var(--surface); color: var(--ink); }

.mb-edit { padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--surface-2); display: grid; gap: 10px; }
.mb-edit .row { display: flex; gap: 8px; flex-wrap: wrap; }

.msg-list .msg { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); cursor: pointer; }
.msg:hover { background: var(--surface-2); }
.msg .from { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg.unread .from::before { content: ''; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-right: 8px; vertical-align: 2px; }
.msg .when { font-size: 12px; color: var(--ink-3); }
.msg .subj { grid-column: 1 / -1; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .snip { grid-column: 1 / -1; font-size: 13px; color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .to { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }

.reader { padding: 18px 20px; display: grid; gap: 14px; }
.reader h3 { margin: 0; font-size: 20px; letter-spacing: -0.01em; }
.meta { display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; font-size: 13px; }
.meta dt { color: var(--ink-3); }
.meta dd { margin: 0; overflow-wrap: anywhere; }
.reader iframe { width: 100%; min-height: 480px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.reader pre { white-space: pre-wrap; overflow-wrap: anywhere; font-family: var(--sans); margin: 0; }

.empty { padding: 40px 20px; text-align: center; color: var(--ink-3); font-size: 14px; }
.empty b { display: block; color: var(--ink); font-size: 15px; margin-bottom: 4px; }

.stack { display: grid; gap: 20px; max-width: 760px; }
.dest { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.dest:last-child { border-bottom: 0; }
.dest .mono { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.inline-form { display: flex; gap: 10px; }
.callout { background: var(--warn-soft); color: var(--warn); border-radius: 9px; padding: 10px 14px; font-size: 14px; }
.callout b { color: inherit; }

.snippet { position: relative; background: var(--surface-2); border-radius: 9px; padding: 12px 14px; font-family: var(--mono); font-size: 13px; white-space: pre-wrap; overflow-wrap: anywhere; }
.snippet .btn { position: absolute; top: 8px; right: 8px; }
.snippet-label { font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.key-reveal { border: 2px solid var(--accent); }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; z-index: 50; max-width: calc(100vw - 32px); }
.toast.err { background: var(--danger); color: #fff; }

@media (max-width: 860px) {
  .lp-hero { grid-template-columns: 1fr; gap: 32px; padding: 24px 0 48px; }
  .lp-points { grid-template-columns: 1fr; }
  .create { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .mb-list { max-height: none; }
  .topbar-in { flex-wrap: wrap; gap: 10px; padding: 10px 16px; }
  .topbar .me .who { display: none; }
  .tabs { order: 3; width: 100%; overflow-x: auto; }
  .page { padding: 18px 16px 48px; }
  .inline-form { flex-direction: column; }
}