:root {
  --navy: #14213d;
  --navy-2: #1d2f54;
  --pink: #ff3d8b;
  --pink-hi: #ffb3d1;
  --ink: #0e1626;
  --paper: #f6f7fb;
  --card: #ffffff;
  --muted: #5b6478;
  --line: #d9deea;
  --bad: #b00020;
  --radius: 14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #eef1f8;
    --paper: #0b1222;
    --card: #15203a;
    --muted: #a9b3c9;
    --line: #2b3a5e;
    --navy: #0b1222;
    --navy-2: #15203a;
  }
}
:root[data-theme="dark"] {
  --ink: #eef1f8; --paper: #0b1222; --card: #15203a; --muted: #a9b3c9; --line: #2b3a5e;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Arabic", sans-serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
[hidden] { display: none !important; }

.brand {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 14px 16px; background: var(--navy); color: #fff;
}
.brand .mark { border-radius: 10px; }
.wordmark { font-weight: 800; font-size: 20px; letter-spacing: .2px; }
.tagline { margin-inline-start: auto; font-size: 13px; opacity: .8; }

main { flex: 1; width: 100%; max-width: 560px; margin: 0 auto; padding: 18px 16px 24px; }
h1 { font-size: 24px; line-height: 1.25; margin: 6px 0 14px; }
.hint { color: var(--muted); margin: 6px 0 12px; }
.fine { font-size: 13px; color: var(--muted); }
.label { display: block; font-weight: 600; margin: 14px 0 6px; }
.block { margin-top: 10px; }

.langs {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px;
}
.langs button {
  min-height: 56px; padding: 10px 12px; font: inherit; font-size: 18px; font-weight: 600;
  background: var(--card); color: var(--ink); border: 2px solid var(--line);
  border-radius: var(--radius); cursor: pointer; text-align: start;
}
.langs button[aria-checked="true"] { border-color: var(--pink); box-shadow: 0 0 0 3px rgba(255,61,139,.2); }
.langs button:focus-visible, .btn:focus-visible, .input:focus-visible { outline: 3px solid var(--pink-hi); outline-offset: 2px; }

.input {
  width: 100%; font: inherit; font-size: 18px; padding: 12px 14px; min-height: 52px;
  background: var(--card); color: var(--ink); border: 2px solid var(--line); border-radius: 12px;
}
.draft { min-height: 96px; resize: vertical; }

.btn {
  font: inherit; font-weight: 700; min-height: 48px; padding: 10px 18px; border-radius: 999px;
  border: 2px solid transparent; cursor: pointer; background: var(--card); color: var(--ink);
}
.btn.big { width: 100%; min-height: 60px; font-size: 19px; }
.btn.primary { background: var(--pink); color: #fff; }
.btn.primary:disabled { opacity: .45; cursor: not-allowed; }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn.small { min-height: 40px; padding: 6px 14px; font-size: 15px; }
.btn.talk {
  background: var(--navy); color: #fff; min-width: 140px; min-height: 64px; font-size: 20px;
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
}
.btn.talk .dot { width: 14px; height: 14px; border-radius: 50%; background: var(--pink-hi); }
.btn.talk[aria-pressed="true"] { background: var(--pink); }
.btn.talk[aria-pressed="true"] .dot { background: #fff; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .25; } }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
.row.end { justify-content: flex-end; }

.invite { margin-top: 22px; text-align: center; }
.qr { display: inline-block; background: #fff; padding: 16px; border-radius: 16px; min-width: 240px; min-height: 240px; }
.qr canvas, .qr img { display: block; width: 240px; height: 240px; }
.link a { color: var(--pink); font-weight: 600; word-break: break-all; }
.status { font-weight: 600; }

.notice {
  background: rgba(176,0,32,.08); color: var(--bad); border: 1px solid rgba(176,0,32,.3);
  padding: 10px 12px; border-radius: 10px;
}

.chat-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.partner { font-weight: 800; font-size: 20px; }

.messages { list-style: none; padding: 0; margin: 0 0 14px; display: flex; flex-direction: column; gap: 10px; }
.msg { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; max-width: 92%; }
.msg.mine { margin-inline-start: auto; border-color: var(--navy-2); background: color-mix(in srgb, var(--navy) 8%, var(--card)); }
.msg .who { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.msg .body { font-size: 18px; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg .alt { margin-top: 8px; font-size: 14px; color: var(--muted); }
.msg .alt summary { cursor: pointer; }
.msg .actions { margin-top: 8px; }
.msg .unavail { color: var(--bad); font-size: 14px; margin-top: 6px; }
.empty { text-align: center; color: var(--muted); padding: 18px 0; }

.composer { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.foot { text-align: center; padding: 12px; }