:root {
  --bg: #f6f6f8;
  --card: #ffffff;
  --line: #dcdce3;
  --text: #1a1a1f;
  --muted: #6b6b78;
  --accent: #ff5c8a;
  --blue: #1f7ae0;
  color-scheme: light;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(246,246,248,.92); backdrop-filter: blur(8px); z-index: 2;
}
h1 { font-size: 20px; margin: 0; letter-spacing: .5px; }
h2 { font-size: 15px; color: var(--muted); font-weight: 600; margin: 0 0 10px; text-transform: uppercase; letter-spacing: .6px; }
.device-pick { display: flex; align-items: center; gap: 8px; }
.status { font-size: 13px; color: var(--muted); white-space: nowrap; }
.status.online::before { content: "●"; color: #3ddc84; margin-right: 4px; }
.status.offline::before { content: "●"; color: #777; margin-right: 4px; }

main { max-width: 640px; margin: 0 auto; padding: 16px; display: grid; gap: 28px; }

.preview-wrap { position: relative; }
#preview {
  width: 100%; height: auto; display: block; border-radius: 14px;
  background: #000; border: 6px solid #000; box-shadow: 0 0 0 1px var(--line), 0 10px 30px rgba(0,0,0,.18);
  touch-action: none;
}
#preview.drawing { cursor: crosshair; }
.hint { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); font-size: 12px; background: rgba(0,0,0,.6); color: #fff; padding: 3px 10px; border-radius: 99px; pointer-events: none; white-space: nowrap; }

.tabs { display: flex; gap: 4px; margin: 14px 0 10px; background: var(--card); padding: 4px; border-radius: 12px; }
.tabs button { flex: 1; border: 0; background: transparent; color: var(--muted); padding: 9px 4px; border-radius: 9px; font: inherit; font-size: 14px; cursor: pointer; }
.tabs button.active { background: var(--line); color: var(--text); }

.panel { display: grid; gap: 10px; min-height: 96px; }
textarea {
  width: 100%; resize: vertical; font: inherit; font-size: 17px; color: var(--text);
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px;
}
textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.emoji-row { display: flex; flex-wrap: wrap; gap: 4px; }
.emoji-row button { font-size: 22px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; cursor: pointer; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; }
.row label { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); }
select { font: inherit; font-size: 14px; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; }
input[type=color] { width: 40px; height: 30px; border: 0; background: none; padding: 0; }
.colors button { width: 30px; height: 30px; border-radius: 50%; border: 2px solid var(--line); cursor: pointer; }
.colors button.active { border-color: var(--text); box-shadow: 0 0 0 2px var(--bg) inset; }
.file { display: block; border: 1px dashed var(--line); border-radius: 12px; padding: 18px; text-align: center; color: var(--muted); cursor: pointer; }
.file input { display: none; }

button.primary {
  width: 100%; margin-top: 14px; padding: 14px; border: 0; border-radius: 12px;
  background: var(--accent); color: #fff; font: inherit; font-weight: 700; font-size: 17px; cursor: pointer;
}
button.primary:disabled { opacity: .5; }
button.ghost { background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 9px; padding: 7px 12px; font: inherit; font-size: 14px; cursor: pointer; }
.msg { min-height: 1.4em; margin: 8px 0 0; font-size: 14px; color: var(--muted); text-align: center; }
.msg.err { color: #ff6b6b; }

#history { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
#history li { display: grid; grid-template-columns: 120px 1fr auto; gap: 12px; align-items: center; background: var(--card); border-radius: 12px; padding: 8px; position: relative; }
#history img { width: 120px; aspect-ratio: 536/240; object-fit: cover; border-radius: 6px; background: #000; display: block; }
.meta { font-size: 13px; color: var(--muted); display: grid; gap: 2px; }
.ticks { font-weight: 700; letter-spacing: -2px; }
.ticks.read { color: var(--blue); }
.reaction { position: absolute; left: 100px; bottom: -6px; font-size: 20px; background: var(--line); border-radius: 99px; padding: 0 5px; }
.del { background: none; border: 0; color: var(--muted); font-size: 18px; cursor: pointer; padding: 6px; }
.muted { color: var(--muted); font-size: 14px; }
.tools { margin-top: 20px; color: var(--muted); font-size: 14px; }
.tools summary { cursor: pointer; margin-bottom: 8px; }

/* ---------- Connexion ---------- */
.login-page { display: grid; place-items: center; min-height: 100vh; }
.login { width: min(360px, 90vw); padding: 24px; }
.login h1 { text-align: center; margin-bottom: 24px; font-size: 26px; }
.login form { display: grid; gap: 8px; }
.login label { font-size: 14px; color: var(--muted); margin-top: 8px; }
.login input {
  font: inherit; font-size: 17px; color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px;
}
.login input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.logout { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; padding: 5px 9px; font: inherit; font-size: 13px; cursor: pointer; }