/* كتالوج سند — مخبر ابن سينا. تصميم لكبار السن: خط كبير، تباين عالي، أزرار كبيرة. */
:root {
  --black: #1a1a1a;
  --red: #dd0000;
  --gold: #ffce00;
  --bg: #faf7f1;
  --card: #ffffff;
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --line: #e2ddd4;
  --ok: #177a3c;
  --radius: 20px;
  --shadow: 0 6px 22px rgba(26, 26, 26, 0.09);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Naskh Arabic", "Segoe UI", Tahoma, system-ui, sans-serif;
  font-size: 19px;
  line-height: 1.85;
  direction: rtl;
}

.wrap { max-width: 660px; margin: 0 auto; padding: 0 16px 48px; }

/* ─── الترويسة ─── */
.brandbar { height: 10px; background: linear-gradient(90deg, var(--black) 0 34%, var(--red) 34% 67%, var(--gold) 67% 100%); }

header.top { text-align: center; padding: 26px 0 14px; }
header.top img.logo { display: block; margin: 0 auto; width: 300px; max-width: 84%; height: auto; }
header.top .sub {
  display: inline-block; margin-top: 12px; padding: 5px 18px;
  background: var(--black); color: #fff; border-radius: 999px;
  font-size: 17px; letter-spacing: .5px;
}

/* ─── الأزرار الكبيرة ─── */
.big-btn {
  display: flex; align-items: center; gap: 18px; width: 100%;
  background: var(--card); color: var(--ink);
  border: 3px solid var(--black); border-radius: var(--radius);
  padding: 20px 20px; margin: 16px 0; text-align: right;
  font-family: inherit; font-size: 25px; font-weight: 700;
  box-shadow: var(--shadow); cursor: pointer;
  transition: transform .08s ease, background .15s ease;
}
.big-btn:active { transform: scale(.985); }
.big-btn:focus-visible { outline: 4px solid var(--gold); outline-offset: 3px; }
.big-btn .ico {
  flex: 0 0 62px; width: 62px; height: 62px; border-radius: 16px;
  display: grid; place-items: center; background: var(--black);
}
.big-btn .ico svg { width: 34px; height: 34px; stroke: var(--gold); fill: none; stroke-width: 2.1; }
.big-btn .txt { flex: 1; min-width: 0; }
.big-btn .hint { display: block; font-size: 17.5px; font-weight: 400; color: var(--muted); line-height: 1.6; }
.big-btn .chev { flex: 0 0 auto; color: var(--red); font-size: 30px; }

.big-btn.red { border-color: var(--red); }
.big-btn.red .ico { background: var(--red); }
.big-btn.gold .ico { background: var(--gold); }
.big-btn.gold .ico svg { stroke: var(--black); }

/* ─── البطاقات والشاشات ─── */
.screen { display: none; }
.screen.on { display: block; }

.card {
  background: var(--card); border: 2px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 16px 0; box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 6px; font-size: 26px; }
.card p.lead { margin: 0 0 14px; color: var(--muted); font-size: 18px; }

.back {
  display: inline-flex; align-items: center; gap: 8px; margin: 14px 0 2px;
  background: none; border: none; color: var(--red); font: inherit;
  font-size: 20px; font-weight: 700; cursor: pointer; padding: 8px 0;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 62px; padding: 12px 26px; border-radius: 16px;
  font-family: inherit; font-size: 21px; font-weight: 700;
  border: 3px solid var(--black); background: var(--black); color: #fff;
  cursor: pointer; width: 100%;
}
.btn.ghost { background: #fff; color: var(--ink); }
.btn.danger { background: var(--red); border-color: var(--red); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn:focus-visible { outline: 4px solid var(--gold); outline-offset: 3px; }
.btn svg { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 2.1; }

.row { display: flex; gap: 12px; }
.row .btn { width: auto; flex: 1; }

input[type="text"], input[type="email"], input[type="tel"], textarea {
  width: 100%; font-family: inherit; font-size: 21px; padding: 15px 16px;
  border: 3px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink);
}
input:focus, textarea:focus { outline: none; border-color: var(--black); }
label { display: block; font-size: 19px; font-weight: 700; margin: 4px 0 8px; }

.note {
  background: #fffdf4; border-right: 6px solid var(--gold);
  border-radius: 12px; padding: 12px 15px; margin: 12px 0;
  font-size: 17.5px; color: #4a4a4a;
}
.note.red { border-right-color: var(--red); }
.msg { border-radius: 14px; padding: 13px 16px; margin: 12px 0; font-size: 18px; }
.msg.err { background: #fff0f0; border: 2px solid #ffbcbc; color: #a30000; }
.msg.ok { background: #f0faf3; border: 2px solid #b6e5c6; color: #14622f; }
.msg[hidden] { display: none; }

/* ─── المكالمة ─── */
.dial { text-align: center; padding: 10px 0 4px; }
.pulse {
  width: 132px; height: 132px; margin: 6px auto 12px; border-radius: 50%;
  background: var(--red); display: grid; place-items: center;
}
.pulse svg { width: 60px; height: 60px; stroke: #fff; fill: none; stroke-width: 2; }
.pulse.live { animation: pulse 1.6s ease-out infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(221, 0, 0, .45); }
  100% { box-shadow: 0 0 0 30px rgba(221, 0, 0, 0); }
}
.timer { font-size: 44px; font-weight: 800; letter-spacing: 2px; font-variant-numeric: tabular-nums; }
.state { font-size: 20px; color: var(--muted); min-height: 32px; }

/* ─── المحادثة ─── */
.chat { display: flex; flex-direction: column; gap: 12px; max-height: 58vh; overflow-y: auto; padding: 6px 2px; }
.bubble {
  max-width: 88%; padding: 13px 17px; border-radius: 18px;
  font-size: 19.5px; line-height: 1.8; white-space: pre-wrap; word-wrap: break-word;
}
.bubble.me { align-self: flex-start; background: var(--black); color: #fff; border-bottom-left-radius: 6px; }
.bubble.bot { align-self: flex-end; background: #fff; border: 2px solid var(--line); border-bottom-right-radius: 6px; }
.bubble.typing { color: var(--muted); font-style: italic; }
.composer { display: flex; gap: 10px; margin-top: 14px; align-items: flex-end; }
.composer textarea { resize: none; height: 62px; font-size: 20px; }
.icon-btn {
  flex: 0 0 62px; width: 62px; height: 62px; border-radius: 16px;
  border: 3px solid var(--black); background: var(--black); color: #fff;
  display: grid; place-items: center; cursor: pointer;
}
.icon-btn.rec { background: var(--red); border-color: var(--red); }
.icon-btn.rec.on { animation: pulse 1.3s infinite; }
.icon-btn svg { width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 2.1; }
.icon-btn:disabled { opacity: .45; }

/* ─── النتيجة ─── */
.code-input {
  font-size: 40px; text-align: center; letter-spacing: 12px;
  font-weight: 800; font-family: system-ui, sans-serif; padding: 16px;
}
.receipt-img { width: 100%; border-radius: 16px; border: 2px solid var(--line); display: block; }
details.receipt { margin: 14px 0; }
details.receipt summary {
  cursor: pointer; font-size: 20px; font-weight: 700; padding: 14px 4px;
  color: var(--red); list-style: none;
}
details.receipt summary::-webkit-details-marker { display: none; }

/* ─── التذييل ─── */
footer.bottom { text-align: center; padding: 30px 0 10px; color: var(--muted); }
footer.bottom img { width: 96px; height: auto; display: block; margin: 8px auto 4px; }
footer.bottom .by { font-size: 19px; font-weight: 700; color: var(--ink); }
footer.bottom .tiny { font-size: 15.5px; }

.install {
  display: none; width: 100%; margin-top: 10px;
  background: var(--gold); color: var(--black); border-color: var(--gold);
}
.install.show { display: inline-flex; }

.spin {
  display: inline-block; width: 22px; height: 22px; border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, .35); border-top-color: #fff;
  animation: sp .8s linear infinite;
}
@keyframes sp { to { transform: rotate(360deg); } }

@media (max-width: 380px) {
  body { font-size: 18px; }
  .big-btn { font-size: 22px; padding: 17px 15px; gap: 13px; }
  .big-btn .ico { flex-basis: 54px; width: 54px; height: 54px; }
}