:root {
  --bg: #0f172a;
  --card: #1e293b;
  --blue: #0f6fff;
  --lightblue: #38bdf8;
  --red: #dc2626;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --yellow: #facc15;
  --repeat-blue: #3b82f6;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  font-family: Tajawal, system-ui, -apple-system, Segoe UI, sans-serif;
  color: var(--text);
  text-align: center;
  /* زودنا مساحة أسفل الصفحة حتى لا يغطي الشريط آخر كلمة */
  padding-bottom: calc(180px + env(safe-area-inset-bottom));
}

.topbar {
  padding: .9rem .5rem .2rem;
  background: rgba(15,23,42,.7);
  backdrop-filter: blur(7px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.title-box {
  display: inline-block;
  background: rgba(248,250,252,.04);
  padding: .4rem 1.1rem .65rem;
  border-radius: 18px;
  border: 1px solid rgba(148,163,184,.15);
}
.main-title { margin:0; font-size:28px; color:#fff; font-weight:800; letter-spacing:.2px; }
.sub-title { margin:.15rem 0 .25rem; line-height:1.25; }
.name-red { color: var(--red); font-weight:700; font-size:1.05rem; }
.phone-white { color:#fff !important; font-weight:700; direction:ltr; text-shadow:0 0 6px rgba(255,255,255,.35); }
a[href^="tel"] { color:#fff !important; text-decoration:none !important; }
.unit-title { margin:.1rem 0; color: var(--red); font-weight:700; }
.hint { margin:.1rem 0; color: var(--muted); }

.controls { display:flex; flex-direction:column; align-items:center; gap:.7rem; margin:1rem auto; }
.controls .row { display:grid; grid-template-columns:repeat(2,180px); grid-auto-rows:50px; gap:.8rem; }

.btn-test,.score-pill,.btn-random,.btn-repeat {
  width:180px;height:50px;border-radius:999px;font-weight:800;font-size:16px;
  border:none;cursor:pointer;transition:transform .15s,opacity .15s,box-shadow .15s;
  box-shadow:0 8px 22px rgba(0,0,0,.16);
}
.btn-test:hover,.score-pill:hover,.btn-random:hover,.btn-repeat:hover { transform:translateY(-1px); opacity:.96; }
.btn-test{background:#f97316;color:#fff}.score-pill{background:#16a34a;color:#fff}.btn-random{background:var(--yellow);color:#1f2937}.btn-repeat{background:var(--repeat-blue);color:#fff}

.words-wrap { max-width: 620px; margin: 0 auto; padding: 0 .6rem 2.2rem; } /* padding سفلي زائد */

.word{
  background: var(--card);
  border-radius: 16px;
  margin: .6rem auto;           /* مسافة رأسية أكبر */
  padding: .75rem .6rem 1.05rem; /* ارتفاع داخلي أكبر */
  box-shadow: 0 6px 18px rgba(0,0,0,.12);
  border: 1px solid rgba(148,163,184,.08);
}
.word .en{ display:flex; gap:.55rem; justify-content:center; align-items:center; flex-direction:row-reverse }
.word .num{ color:var(--lightblue); font-weight:800; font-size:1.1rem }
.word .en-text{ font-weight:800; font-size:1.85rem; color:#bfdbfe; text-shadow:0 1px 0 rgba(0,0,0,.2); transition:transform .12s,filter .12s }
.word .en-text.speaking{ transform:scale(1.03); filter:drop-shadow(0 0 10px rgba(56,189,248,.55)) }
.word .ar{ font-size:1.04rem; margin-top:.45rem; color:#e2e8f0; font-weight:600 }

.input-word{
  width:100%; margin-top:.5rem; padding:.6rem .65rem; border-radius:12px; border:2px solid #38bdf8;
  direction:ltr; background:#dbeafe; color:#0f3ccc; font-weight:800; font-size:1.22rem; text-align:center;
  box-shadow:0 0 6px rgba(59,130,246,.3)
}
.input-word:focus{ outline:none; border-color:#60a5fa; background:#eff6ff; box-shadow:0 0 10px rgba(96,165,250,.6) }

.correct-answer{ margin-top:.4rem; font-weight:800; font-size:1.6rem; color:#f43f5e }

.bottom-nav{
  position: fixed;
  bottom: calc(10px + env(safe-area-inset-bottom)); /* فوق الـsafe-area */
  left: 50%; transform: translateX(-50%);
  background: rgba(15,23,42,.55);
  display: flex; gap: 1rem; align-items: center;
  padding: .5rem 1.3rem;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(148,163,184,.15);
}
.nav-btn{ background:var(--blue); color:#fff; border:none; padding:.4rem .85rem; border-radius:999px; font-weight:700 }
.page-info{ font-weight:700; color:#e2e8f0; min-width:80px; display:inline-block }

.excellent{
  position: fixed; inset: 0; display: grid; place-items: center;
  background: radial-gradient(circle, rgba(15,23,42,0) 0%, rgba(15,23,42,.35) 65%, rgba(15,23,42,.65) 100%);
  z-index: 999; font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 900; color: #fef9c3;
  text-shadow: 0 0 10px rgba(250,204,21,.9), 0 0 24px rgba(250,204,21,.8);
  animation: popIn 1.1s ease, goldPulse 2.4s ease-in-out infinite;
}
.hidden { display: none !important }
@keyframes popIn{0%{transform:scale(.4);opacity:0}40%{transform:scale(1.04);opacity:1}100%{transform:scale(1);opacity:1}}
@keyframes goldPulse{0%{filter:drop-shadow(0 0 9px #fde68a)}50%{filter:drop-shadow(0 0 18px #f59e0b)}100%{filter:drop-shadow(0 0 9px #fde68a)}}

button { -webkit-tap-highlight-color: transparent; }