/* Basestil */
[hidden]{display:none !important;}

/* SKOLEAKTIG DESIGN - Lys, fargerik og vennlig */
:root{
  --bg: #f8f9fe;
  --bg-gradient-1: #e8f4f8;
  --bg-gradient-2: #fef4e8;
  --panel: #ffffff;
  --panel-border: #e0e7ff;
  --text: #1e293b;
  --text-muted: #64748b;
  --card-front: #ffffff;
  --card-border: #cbd5e1;
  --accent: #3b82f6;
  --verb: #3b82f6;
  --verb-light: #dbeafe;
  --adverb: #f59e0b;
  --adverb-light: #fef3c7;
  --ok: #10b981;
  --err: #ef4444;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow: 0 4px 16px rgba(0,0,0,.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.15);
}

*{box-sizing:border-box}
html,body{height:100%; min-height:100vh;}
body{
  margin:0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  color:var(--text);
  background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg) 50%, var(--bg-gradient-2) 100%);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* Toppseksjon */
.top{
  text-align: center;
  margin: 32px auto 24px;
  padding: 0 24px;
}
h1{
  margin:0;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.5px;
  color: var(--accent);
}
.subtitle{
  margin:0 0 24px;
  color:var(--text-muted);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hud{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  justify-content: center;
}

/* Bunnseksjon */
.bottom{
  text-align: center;
  margin: 24px auto 32px;
  padding: 0 24px;
}
.bottom .subtitle{
  margin-bottom: 16px;
}
.hud-item{
  background: var(--panel);
  border: 2px solid var(--panel-border);
  padding: 14px 20px;
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.2s ease;
}
.hud-item:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
button{
  background: var(--accent);
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: 20px;
  cursor: pointer;
  box-shadow: var(--shadow);
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.2s ease;
}
button:hover{ 
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: #2563eb;
}
button:active{ transform:translateY(0px); }

/* Spillbrett */
main{ 
  display:flex; 
  flex-direction: column;
  align-items: center;
  justify-content:center; 
  flex: 1;
  padding: 0 24px;
}
#game{
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 32px;
  background: var(--panel);
  border: 3px solid var(--panel-border);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap:16px;
  align-items:stretch;
}
.restart-section{
  text-align: center;
  margin-top: 24px;
}
@media (max-width: 768px){
  #game{ 
    width: 100%; 
    padding: 20px;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }
}
@media (max-width: 520px){
  #game{
    padding: 16px;
    gap: 10px;
  }
}

/* Kort */
.card{
  perspective: 1000px;
  height: 140px;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}
@media (max-width: 520px){
  .card{ height: 120px; }
}

.card:hover:not(.matched):not(.flipped){
  transform: translateY(-4px) scale(1.02);
}

.card:focus{
  outline: none;
}

.card:focus-visible .inner{
  box-shadow: 0 0 0 4px var(--accent), var(--shadow);
}

.card .inner{
  position:relative;
  width:100%;
  height:100%;
  transform-style:preserve-3d;
  transition: transform .38s ease, box-shadow 0.3s ease;
  border-radius: 20px;
}
.card.flipped .inner{ transform: rotateY(180deg); }
.card.matched{ 
  pointer-events:none;
}

/* Match-animasjon */
@keyframes matchPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.card.matched .inner{
  animation: matchPulse 0.5s ease;
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.5), var(--shadow);
}

/* Feil-animasjon */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.card.error{
  animation: shake 0.4s ease;
}

.card.error .inner{
  box-shadow: 0 0 24px rgba(239, 68, 68, 0.5), var(--shadow);
}

.face{
  position:absolute;
  inset:0;
  backface-visibility:hidden;
  border-radius: 20px;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
  text-align:center;
  box-shadow: var(--shadow);
}

/* Forside */
.front{
  background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 100%);
  border: 3px solid var(--card-border);
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--accent);
  font-size: 0.85rem;
}

/* Bakside */
.back{
  transform: rotateY(180deg);
  background: var(--card-front);
  border: 3px solid var(--card-border);
  font-size: clamp(17px, 2.5vw, 24px);
  line-height:1.3;
  font-weight: 700;
}
.back.verb{ 
  background: linear-gradient(135deg, var(--verb-light) 0%, #ffffff 100%);
  border: 3px solid var(--verb);
  color: var(--verb);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.25), var(--shadow);
}
.back.verb::before{
  content: "VERB";
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 10px;
  opacity: 0.5;
  letter-spacing: 1.5px;
  font-weight: 800;
  color: var(--verb);
}
.back.adverb{ 
  background: linear-gradient(135deg, var(--adverb-light) 0%, #ffffff 100%);
  border: 3px solid var(--adverb);
  color: var(--adverb);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.25), var(--shadow);
}
.back.adverb::before{
  content: "ADVERB";
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 10px;
  opacity: 0.5;
  letter-spacing: 1.5px;
  font-weight: 800;
  color: var(--adverb);
}

/* Overlay dialog */
.overlay{
  position: fixed;
  inset:0;
  background: rgba(0, 0, 0, .5);
  backdrop-filter: blur(8px);
  display:grid;
  place-items:center;
  padding:24px;
}
.dialog{
  width:min(520px, 92vw);
  background: var(--panel);
  border: 3px solid var(--panel-border);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow-lg);
  text-align:center;
}
.dialog h2{
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 2rem;
}
.dialog p{
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1.8;
  white-space: pre-line;
}
.dialog-actions{ 
  margin-top: 24px; 
}