.flash-card-container.svelte-1dyno4q{perspective:1000px;width:100%;min-height:300px;cursor:pointer;-webkit-user-select:none;user-select:none}.flash-card.svelte-1dyno4q{width:100%;min-height:300px;position:relative;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1)}.flash-card.flipped.svelte-1dyno4q{transform:rotateY(180deg)}.card-face.svelte-1dyno4q{position:absolute;width:100%;min-height:300px;backface-visibility:hidden;border-radius:12px;box-shadow:0 4px 12px #0000001a;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:2rem;box-sizing:border-box;background:#fff;overflow:visible}.card-front.svelte-1dyno4q{background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.card-back.svelte-1dyno4q{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;transform:rotateY(180deg)}.card-back-content.svelte-1dyno4q{display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;position:relative}.main-text.svelte-1dyno4q{text-align:center;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%}.card-front.svelte-1dyno4q .main-text:where(.svelte-1dyno4q){flex:1}.main-text.svelte-1dyno4q p:where(.svelte-1dyno4q){margin:0;font-size:1.25rem;line-height:1.6;font-weight:500;max-width:100%;word-wrap:break-word}.card-front.svelte-1dyno4q .main-text:where(.svelte-1dyno4q) p:where(.svelte-1dyno4q){color:#2d3748}.expansion-controls.svelte-1dyno4q{margin-top:1rem;display:flex;justify-content:center;z-index:10}.explanation-container.svelte-1dyno4q{position:absolute;bottom:0;left:0;right:0;max-height:0;overflow:hidden;transition:max-height .3s ease;transform:translateY(100%);background:#fffffff2;border-radius:0 0 12px 12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.explanation-container.expanded.svelte-1dyno4q{max-height:200px}.expand-button.svelte-1dyno4q{background:#ffffff4d;border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff}.expand-button.svelte-1dyno4q:hover{background:#fff6;transform:scale(1.1)}.expand-button.expanded.svelte-1dyno4q{transform:rotate(180deg)}.expand-button.expanded.svelte-1dyno4q:hover{transform:rotate(180deg) scale(1.1)}.explanation.svelte-1dyno4q{color:#333;padding:1rem;font-size:.9rem;line-height:1.4;text-align:center;opacity:0;transition:opacity .3s ease .1s}.explanation-container.expanded.svelte-1dyno4q .explanation:where(.svelte-1dyno4q){opacity:1}.audio-button.svelte-1dyno4q{position:absolute;top:1rem;right:1rem;width:48px;height:48px;border-radius:50%;border:none;background:#ffffff4d;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.audio-button.svelte-1dyno4q:hover{background:#fff6;transform:scale(1.1)}.audio-button.svelte-1dyno4q:active{transform:scale(.95)}@media (max-width: 768px){.flash-card-container.svelte-1dyno4q{min-height:250px}.card-face.svelte-1dyno4q{padding:1.5rem}.main-text.svelte-1dyno4q p:where(.svelte-1dyno4q){font-size:1.1rem}.audio-button.svelte-1dyno4q{width:40px;height:40px}.audio-button.svelte-1dyno4q svg:where(.svelte-1dyno4q){width:20px;height:20px}}@media (max-width: 480px){.flash-card-container.svelte-1dyno4q{min-height:200px}.card-face.svelte-1dyno4q{padding:1rem}.main-text.svelte-1dyno4q p:where(.svelte-1dyno4q){font-size:1rem}.expand-button.svelte-1dyno4q{width:28px;height:28px}.explanation.svelte-1dyno4q{font-size:.85rem;padding:.75rem}}