:root{
  --bg: #fffaf0;
  --card: #ffffff;
  --accent: #ffb74d;
  --accent-2: #4db6ac;
  --text: #222;
  --radius: 18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
}

header{
  width:100%;
  max-width:900px;
  padding:12px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}

h1{
  margin:0;
  font-size:1.8rem;
}

.mode-controls{
  display:flex;
  gap:8px;
  align-items:center;
}

button{
  -webkit-tap-highlight-color: transparent;
  border: none;
  background:var(--accent);
  color: #111;
  padding:14px 18px;
  border-radius:12px;
  font-size:1.1rem;
  cursor:pointer;
}

button:active{transform:scale(.98)}
.sound-toggle{font-size:0.9rem; display:flex; align-items:center; gap:6px}

main{width:100%; max-width:900px; display:flex; flex-direction:column; align-items:center; padding:8px}

#card-area{width:100%; display:flex; justify-content:center}
.card{
  width:88%;
  max-width:640px;
  background:var(--card);
  border-radius:var(--radius);
  padding:14px;
  box-shadow: 0 6px 18px rgba(0,0,0,.08);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
}

#image-wrap{width:100%; display:flex; justify-content:center}
#card-image{
  width:92%;
  max-height:360px;
  object-fit:contain;
  border-radius:12px;
  background: #f4f4f6;
  padding:8px;
}

#word-wrap{width:100%; text-align:center}
.word.large{font-size:2.8rem; font-weight:700}
.word.small{font-size:1.25rem; color:#444; margin-top:6px}

.card-controls{display:flex; gap:12px}

.nav-controls{display:flex; gap:12px; align-items:center; margin-top:6px}
#progress{font-weight:700; font-size:1.1rem}

/* Quiz mode visual */
.quiz-mode .card{
  border: 6px dashed var(--accent-2);
  background: #ffffff;
}
.quiz-mode #polish-word,
.quiz-mode #english-word{
  visibility:hidden;
  height:0;
  margin:0;
  padding:0;
}

/* When flipped, show words in both modes */
.flipped #polish-word,
.flipped #english-word{
  visibility:visible;
  height:auto;
}

/* Responsive - bigger buttons for tablet */
@media(min-width:700px){
  button{padding:16px 22px; font-size:1.2rem; border-radius:14px}
  .word.large{font-size:3.4rem}
}