.lernkartei-page{
   padding-bottom: 2rem;
}

.lernkartei-app{
   display: grid;
   gap: 2rem;
}

.lernkartei-intro{
   background: var(--white);
   border: var(--border);
   border-radius: var(--radius);
   box-shadow: var(--box-shadow);
   padding: 2.4rem;
}

.lernkartei-intro .heading{
   margin-bottom: 1rem;
   text-align: left;
}

.lernkartei-toolbar{
   display: flex;
   flex-wrap: wrap;
   align-items: end;
   justify-content: space-between;
   gap: 1.6rem;
   background: var(--white);
   border: var(--border);
   border-radius: var(--radius);
   box-shadow: var(--box-shadow);
   padding: 2rem;
}

.toolbar-field{
   display: grid;
   gap: .8rem;
   min-width: min(100%, 28rem);
}

.toolbar-field span{
   font-size: 1.4rem;
   color: var(--light-color);
   text-transform: uppercase;
   letter-spacing: .08em;
}

.toolbar-field select{
   background: var(--light-bg);
   border: var(--border);
   border-radius: .9rem;
   color: var(--black);
   font-size: 1.7rem;
   padding: 1.2rem 1.4rem;
}

.toolbar-actions{
   display: flex;
   flex-wrap: wrap;
   gap: 1rem;
}

.toolbar-actions .inline-btn,
.toolbar-actions .inline-option-btn{
   margin-top: 0;
}

.lernkartei-status{
   display: flex;
   flex-wrap: wrap;
   justify-content: space-between;
   gap: 1rem;
   font-size: 1.6rem;
   color: var(--light-color);
   padding: 0 .2rem;
}

.lernkartei-error{
   background: #fff1f0;
   border: .1rem solid rgba(231,76,60,.25);
   border-radius: var(--radius);
   color: var(--red);
   font-size: 1.6rem;
   padding: 1.4rem 1.6rem;
}

.lernkartei-grid{
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(24rem, 1fr));
   gap: 1.6rem;
}

.flashcard{
   min-height: 28rem;
   perspective: 1200px;
}

.flashcard-inner{
   position: relative;
   width: 100%;
   height: 100%;
   min-height: 28rem;
   transform-style: preserve-3d;
   transition: transform .45s ease;
}

.flashcard.is-flipped .flashcard-inner{
   transform: rotateY(180deg);
}

.flashcard-face{
   position: absolute;
   inset: 0;
   display: flex;
   flex-direction: column;
   justify-content: space-between;
   gap: 1.4rem;
   padding: 2rem;
   border-radius: var(--radius);
   backface-visibility: hidden;
   border: var(--border);
   box-shadow: var(--box-shadow);
}

.flashcard-front{
   background: linear-gradient(160deg, #ffffff, #eef3ff);
}

.flashcard-back{
   background: linear-gradient(160deg, #163d8f, #1a4fd8);
   color: var(--white);
   transform: rotateY(180deg);
}

.flashcard-label{
   font-size: 1.2rem;
   letter-spacing: .12em;
   text-transform: uppercase;
   color: var(--light-color);
}

.flashcard-back .flashcard-label{
   color: rgba(255,255,255,.72);
}

.flashcard-word{
   font-size: 3rem;
   line-height: 1.15;
   font-weight: 600;
   color: var(--black);
}

.flashcard-back .flashcard-word{
   color: var(--white);
}

.flashcard-example{
   font-size: 1.5rem;
   line-height: 1.5;
   color: var(--light-color);
}

.flashcard-back .flashcard-example{
   color: rgba(255,255,255,.9);
}

.flashcard-hint{
   font-size: 1.3rem;
   color: var(--light-color);
}

.flashcard-back .flashcard-hint{
   color: rgba(255,255,255,.72);
}

.flashcard-button{
   width: 100%;
   height: 100%;
   min-height: 28rem;
   background: transparent;
   padding: 0;
   text-align: left;
   cursor: pointer;
}

@media (max-width: 768px){
   .lernkartei-toolbar{
      align-items: stretch;
   }

   .toolbar-field{
      min-width: 100%;
   }

   .toolbar-actions{
      width: 100%;
   }

   .toolbar-actions .inline-btn,
   .toolbar-actions .inline-option-btn{
      flex: 1 1 100%;
      margin-right: 0;
   }
}