*{margin:0;padding:0;box-sizing:border-box}body.page-flashcards,body.page-study{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f8fafc;color:#1e293b}.flashcard-session{width:100%;min-height:100vh;background:#fff;position:relative;display:flex;flex-direction:column}.flashcard-header{background:linear-gradient(135deg,#ea4a71,#e25a41);padding:18px 15px 14px;color:#fff;position:relative}.flashcard-header__content{display:flex;align-items:flex-start;gap:15px}.flashcard-header__back-btn{background:none;border:none;color:#fff;font-size:20px;cursor:pointer;padding:6px;border-radius:6px;transition:background .2s;flex-shrink:0;margin-top:-2px}.flashcard-header__back-btn:hover{background:#ffffff1a}.flashcard-header__info{flex:1;min-width:0}.flashcard-header__title{font-size:16px;font-weight:600;opacity:.95;display:flex;align-items:center;gap:8px;margin-bottom:8px}.flashcard-header__icon{position:relative;top:1px}.flashcard-header__module-info{font-size:13px;font-weight:600;opacity:.95;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.flashcard-header__progress-bar{background:#fff3;height:6px;border-radius:8px;overflow:hidden;width:85%;position:relative;margin-bottom:6px}.flashcard-header__progress-text{font-size:11px;opacity:.85;font-weight:500;width:85%}.flashcard-header__progress-fill{background:#ffffffe6;height:100%;border-radius:8px;transition:width .4s ease;box-shadow:0 0 8px #ffffff4d}.module-indicator{background:#64748b1a;color:#64748b;padding:6px 12px;border-radius:20px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:6px;margin:0 auto 20px}.flashcard-container{padding:25px 20px 100px;flex:1;display:flex;flex-direction:column;overflow-y:auto}.flashcard{background:#fff;border-radius:16px;padding:35px 20px;box-shadow:0 4px 6px -1px #0000001a;text-align:center;flex-grow:1;display:flex;flex-direction:column;justify-content:center;margin-bottom:25px;position:relative}.flashcard__ribbon-wrapper{position:absolute;top:0;right:0;width:100px;height:100px;overflow:hidden;pointer-events:none;display:none}.flashcard__ribbon-wrapper--show{display:block}.flashcard__ribbon{position:absolute;top:15px;right:-30px;background:linear-gradient(135deg,#ea4a71,#e25a41);color:#fff;padding:4px 40px;transform:rotate(45deg);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;box-shadow:0 2px 4px #0003;pointer-events:auto}.flashcard__type-badge{background:#f1f5f9;color:#64748b;padding:6px 12px;border-radius:20px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;display:block;width:fit-content;margin:0 auto 20px}.flashcard__tense-info{background:#e2e8f0;color:#475569;padding:4px 10px;border-radius:15px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;align-self:center;margin-bottom:15px}.flashcard__verb-highlight{font-size:36px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:20px 0 12px;text-align:center;letter-spacing:-.5px;position:relative;display:inline-block;align-self:center}.flashcard__question{font-size:18px;color:#64748b}.flashcard__content{font-size:32px;font-weight:700;color:#1e293b;margin-bottom:25px;line-height:1.2}.flashcard__content--medium{font-size:28px}.flashcard__image{width:100%;height:160px;background:#f1f5f9;border-radius:12px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-size:64px;overflow:hidden}.flashcard__image img{width:100%;height:100%;object-fit:cover;object-position:center;border-radius:12px}.flashcard__translation{font-size:16px;color:#64748b;margin-bottom:20px}.flashcard__translation:empty{display:none}.flashcard__example{margin:20px 0;text-align:center}.flashcard__example-spanish{font-size:17px;color:#475569;font-weight:500;font-style:italic;margin-bottom:6px;line-height:1.3}.flashcard__example-english{font-size:15px;color:#64748b;font-weight:400;line-height:1.3}.flashcard__audio-btn{background:#ea4a71;color:#fff;border:none;padding:12px 24px;border-radius:25px;font-size:16px;cursor:pointer;margin:15px auto 0;display:flex;align-items:center;gap:8px;transition:all .2s}.flashcard__audio-btn:hover{background:#d63864;transform:translateY(-1px)}.conjugation-table{background:#f8fafc;border-radius:12px;padding:20px;margin:20px 0;position:relative}.conjugation-table__row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid #e2e8f0}.conjugation-table__row:last-child{border-bottom:none}.conjugation-table__pronoun{font-weight:600;color:#64748b}.conjugation-table__verb-form{font-weight:600;color:#1e293b}.conjugation-table__verb-form--highlighted{color:#ea4a71}.answer-buttons{position:fixed;bottom:20px;left:20px;right:20px;display:flex;gap:15px;padding:0;z-index:10}.answer-buttons__btn{flex:1;padding:18px;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:flex-start;gap:8px;line-height:1.2;text-align:left;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.answer-buttons__btn:hover{transform:translateY(-2px)}.answer-buttons__btn--correct{background:#dcfce7e6;color:#16a34a;box-shadow:0 4px 12px #16a34a33}.answer-buttons__btn--incorrect{background:#fee2e2e6;color:#dc2626;box-shadow:0 4px 12px #dc262633}.btn-primary{background:linear-gradient(135deg,#ea4a71,#e25a41);color:#fff;padding:18px;border-radius:12px;border:none;font-size:18px;font-weight:600;cursor:pointer;transition:all .2s}.btn-primary:hover{background:linear-gradient(135deg,#d63864,#c54433);transform:translateY(-1px)}.flashcard-session .btn-primary{position:fixed;bottom:20px;left:20px;right:20px;width:auto;z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.nav-buttons{position:fixed;bottom:20px;left:50%;transform:translate(-50%);display:flex;gap:10px;z-index:100}.nav-buttons__btn{background:#ea4a71;color:#fff;border:none;padding:10px 15px;border-radius:8px;cursor:pointer;font-size:14px}.nav-buttons__btn--active{background:#d63864}.module-bar{background:linear-gradient(to right,#f8fafc,#f1f5f9);padding:8px 20px;font-size:12px;font-weight:600;color:#64748b;text-align:center;border-bottom:1px solid #e2e8f0;letter-spacing:.3px}.flashcard__answer-highlight{color:#ea4a71;background:#f1f5f9;padding:4px 8px;border-radius:6px}.flashcard-header__progress-text--spaced{display:flex;justify-content:space-between}.icon-center{display:flex;align-items:center;justify-content:center}.flashcard__word-highlight{display:inline-block;font-size:42px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:20px 0 10px;letter-spacing:-.5px;line-height:1.1}.flashcard__gender-indicator{background:#e2e8f0;color:#475569;padding:4px 10px;border-radius:15px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;display:inline-block;margin:5px 0}.flashcard__gender-indicator--masculine{background:#dbeafe;color:#1e40af}.flashcard__gender-indicator--feminine{background:#fce7f3;color:#be185d}.minimal-pairs__options{display:flex;flex-direction:column;gap:15px;margin-bottom:30px}.minimal-pairs__option{background:#f8fafc;border:2px solid #e2e8f0;padding:20px;border-radius:12px;cursor:pointer;transition:all .2s;text-align:left}.minimal-pairs__option:hover:not(.minimal-pairs__option--answered){background:#f1f5f9;transform:translate(4px);border-color:#cbd5e1}.minimal-pairs__option--correct{border-color:#16a34a;background:#dcfce7}.minimal-pairs__option--incorrect{border-color:#dc2626;background:#fee2e2}.minimal-pairs__option--answered{cursor:default}.minimal-pairs__text{font-size:28px;font-weight:700;color:#1e293b;margin-bottom:4px}.minimal-pairs__meaning{font-size:15px;color:#64748b}.answer-divider{height:1px;background:#e2e8f0;margin:30px 0 20px;opacity:0;transform:scaleX(0);transition:all .3s ease-out}.answer-divider--show{opacity:1;transform:scaleX(1)}.answer-section{opacity:0;transform:translateY(20px);transition:all .5s ease-out;margin-top:0;max-height:0;overflow:hidden}.answer-section--show{opacity:1;transform:translateY(0);max-height:1000px}.answer-section--show .answer-section__you-heard{animation:slideIn .5s ease-out .2s both}.answer-section--show .answer-section__sound-comparison{animation:slideIn .5s ease-out .4s both}.answer-section--show .answer-section__tip{animation:slideIn .5s ease-out .6s both}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.answer-section__you-heard{background:#f8fafc;border-radius:12px;padding:20px;margin-bottom:25px;border-left:4px solid #e2e8f0;transition:all .3s ease}.answer-section__you-heard--correct{background:#dcfce7;border-left-color:#16a34a}.answer-section__you-heard--incorrect{background:#fee2e2;border-left-color:#dc2626}.answer-section__label{font-size:14px;color:#64748b;margin-bottom:8px;font-weight:600}.answer-section__label--correct{color:#16a34a}.answer-section__label--incorrect{color:#dc2626}.answer-section__word{font-size:36px;font-weight:700;color:#1e293b;margin-bottom:4px}.answer-section__details{font-size:16px;color:#475569}.answer-section__sound-comparison{display:flex;gap:20px;justify-content:center;margin:25px 0;align-items:center}.sound-box{text-align:center;flex:1}.sound-box__letter{font-size:32px;font-weight:700;color:#1e293b;background:#f8fafc;padding:15px 25px;border-radius:12px;margin-bottom:8px;display:inline-block;min-width:80px;transition:all .3s ease}.sound-box__letter--highlight{background:#f1f5f9;color:#475569;font-weight:800}.sound-box__ipa{font-size:16px;color:#64748b;font-family:Arial Unicode MS,Lucida Sans Unicode,sans-serif}.sound-box__vs{color:#cbd5e1;font-size:18px;font-weight:500}.flashcard__note{background:#2563eb0d;border-radius:12px;padding:15px;margin:20px 0;border-left:3px solid #2563eb;font-size:14px;color:#1e293b;line-height:1.5;text-align:left}.flashcard__note:empty{display:none}.answer-section__tip{background:#2563eb0d;border-radius:12px;padding:15px;margin:20px 0;border-left:3px solid #2563eb}.answer-section__tip-text{font-size:14px;color:#1e293b;line-height:1.5}.spelling-rules__letter-combo{font-size:72px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:15px 0 25px;letter-spacing:3px;text-align:center}.spelling-rules__context{font-size:16px;color:#64748b;margin-bottom:20px;text-align:center}.spelling-rules__examples{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:20px 0;overflow:visible}.spelling-rules__example{background:#e2e8f0;color:#1e293b;padding:10px 18px;border-radius:20px;font-size:16px;font-weight:600;margin:0 2px}.spelling-rules__highlight{color:#ea4a71}.spelling-rules__sound-display{background:#f8fafc;border-radius:12px;padding:25px;margin-bottom:20px;border-left:4px solid #EA4A71;animation:slideIn .5s ease-out .2s both;text-align:center}.spelling-rules__sound-label{font-size:14px;color:#64748b;margin-bottom:10px;font-weight:600}.spelling-rules__pattern-highlight{color:#ea4a71;font-weight:700}.spelling-rules__ipa{font-size:42px;font-weight:700;color:#ea4a71;font-family:Arial Unicode MS,Lucida Sans Unicode,sans-serif;margin-bottom:10px}.spelling-rules__sound-description{font-size:18px;color:#1e293b;font-weight:500;margin-bottom:5px}.spelling-rules__sound-note{font-size:14px;color:#64748b;font-style:italic}.spelling-rules__rule-box{background:#2563eb0d;border-radius:12px;padding:15px;margin-bottom:20px;border-left:3px solid #2563eb;animation:slideIn .5s ease-out .4s both}.spelling-rules__rule-text{font-size:14px;color:#1e293b;line-height:1.5}.spelling-rules__example.throb,.spelling-rules__ipa.throb,.example-spanish.throb,.flashcard__complete-rule.throb{animation:throb .6s ease-in-out;transform-origin:center}.flashcard__complete-rule [data-audio-text].throb,.flashcard-pattern__right.throb,.flashcard-pattern__left.throb{animation:throb .6s ease-in-out;transform-origin:center;display:inline-block}.flashcard-pattern__left[data-audio-word],.flashcard-pattern__right[data-audio-word],#spanish-word[data-audio-text],#spanish-word-answer[data-audio-text],#spanish-word-back[data-audio-text],#vocab-example-spanish[data-audio-text],#vocab-example-spanish-back[data-audio-text]{cursor:pointer}#spanish-word.throb,#spanish-word-answer.throb,#spanish-word-back.throb,#vocab-example-spanish.throb,#vocab-example-spanish-back.throb{animation:throb .6s ease-in-out;transform-origin:center;display:inline-block}@keyframes throb{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.spelling-practice__input{width:100%;max-width:280px;padding:18px 24px;border:1.5px solid #e2e8f0;border-radius:12px;font-size:22px;font-weight:500;text-align:center;color:#1e293b;transition:all .2s;margin:30px auto 15px;display:block;background:#fff;letter-spacing:.5px}.spelling-practice__input::placeholder{color:#94a3b8;font-weight:400;opacity:.7}.spelling-practice__input:hover:not(:focus):not(.spelling-practice__input--correct):not(.spelling-practice__input--incorrect){border-color:#cbd5e1}.spelling-practice__input:focus{outline:none;border-color:#64748b;background:#fff}.spelling-practice__input--correct{border-color:#16a34a;background:#f0fdf4;animation:correctBounce .5s ease-out}.spelling-practice__input--incorrect{border-color:#dc2626;background:#fef2f2;animation:shake .5s ease-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}@keyframes correctBounce{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.spelling-practice__hint{font-size:13px;color:#94a3b8;margin-top:8px;font-weight:400}.spelling-practice__answer-section{opacity:0;transform:translateY(20px);transition:all .5s ease-out;margin-top:0;max-height:0;overflow:hidden}.spelling-practice__answer-section.show{opacity:1;transform:translateY(0);max-height:1000px}.spelling-practice__display{background:#f8fafc;border-radius:12px;padding:25px;margin-bottom:20px;border-left:4px solid #EA4A71;animation:slideIn .5s ease-out .2s both;text-align:center}.spelling-practice__display--correct{border-left-color:#16a34a;background:#f0fdf4}.spelling-practice__display--incorrect{border-left-color:#dc2626}.spelling-practice__label{font-size:14px;color:#64748b;margin-bottom:10px;font-weight:600}.spelling-practice__label--correct{color:#16a34a}.spelling-practice__label--incorrect{color:#dc2626}.spelling-practice__correct-spelling{font-size:42px;font-weight:700;color:#1e293b;margin-bottom:10px;letter-spacing:2px}.spelling-practice__pattern-highlight{color:#ea4a71;font-weight:700}.spelling-practice__translation{font-size:16px;color:#64748b;font-style:italic}.spelling-practice__tip-box{background:#2563eb0d;border-radius:12px;padding:15px;margin-bottom:20px;border-left:3px solid #2563eb;animation:slideIn .5s ease-out .4s both}.spelling-practice__tip-text{font-size:14px;color:#1e293b;line-height:1.5}.card-audio.playing{animation:pulse .6s ease-in-out}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(.95)}to{transform:scale(1)}}.pronunciation__word{font-size:48px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:15px 0 10px;letter-spacing:-.5px;line-height:1.1}.pronunciation__hint{font-size:14px;color:#94a3b8;margin-top:10px;font-style:italic}.pronunciation__image{width:100%;height:180px;background:#f1f5f9;border-radius:12px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;overflow:hidden}.pronunciation__image img{width:100%;height:100%;object-fit:cover;object-position:center;border-radius:12px}.audio-waveform{display:flex;align-items:center;justify-content:center;gap:4px;height:60px;margin:25px auto}.audio-waveform__bar{width:6px;background:linear-gradient(to top,#ea4a71,#e25a41);border-radius:3px;transition:height .2s ease}.audio-waveform__bar:nth-child(1){height:18px}.audio-waveform__bar:nth-child(2){height:30px}.audio-waveform__bar:nth-child(3){height:42px}.audio-waveform__bar:nth-child(4){height:36px}.audio-waveform__bar:nth-child(5){height:24px}.audio-waveform--playing .audio-waveform__bar:nth-child(1){animation:wave1 1.2s ease-in-out infinite}.audio-waveform--playing .audio-waveform__bar:nth-child(2){animation:wave2 1.2s ease-in-out infinite}.audio-waveform--playing .audio-waveform__bar:nth-child(3){animation:wave3 1.2s ease-in-out infinite}.audio-waveform--playing .audio-waveform__bar:nth-child(4){animation:wave4 1.2s ease-in-out infinite}.audio-waveform--playing .audio-waveform__bar:nth-child(5){animation:wave5 1.2s ease-in-out infinite}@keyframes wave1{0%,to{height:18px}50%{height:36px}}@keyframes wave2{0%,to{height:30px}50%{height:48px}}@keyframes wave3{0%,to{height:42px}50%{height:54px}}@keyframes wave4{0%,to{height:36px}50%{height:45px}}@keyframes wave5{0%,to{height:24px}50%{height:39px}}.audio-waveform--playing .audio-waveform__bar:nth-child(1){animation-delay:0s}.audio-waveform--playing .audio-waveform__bar:nth-child(2){animation-delay:.15s}.audio-waveform--playing .audio-waveform__bar:nth-child(3){animation-delay:.3s}.audio-waveform--playing .audio-waveform__bar:nth-child(4){animation-delay:.45s}.audio-waveform--playing .audio-waveform__bar:nth-child(5){animation-delay:.6s}.pronunciation__feedback{font-size:14px;color:#64748b;margin:15px 0;line-height:1.5}.pronunciation__details{margin:25px 0}.pronunciation__ipa-display{background:#f8fafc;border-radius:12px;padding:25px;margin-bottom:20px;border-left:4px solid #EA4A71;text-align:center;animation:slideIn .5s ease-out .2s both}.pronunciation__ipa-label{font-size:14px;color:#64748b;margin-bottom:10px;font-weight:600}.pronunciation__ipa-text{font-size:42px;font-weight:700;color:#ea4a71;font-family:Arial Unicode MS,Lucida Sans Unicode,sans-serif}.pronunciation__breakdown{background:#f8fafc;border-radius:12px;padding:20px;margin-bottom:20px;border-left:4px solid #2563eb;text-align:center;animation:slideIn .5s ease-out .3s both}.pronunciation__breakdown-label{font-size:14px;color:#64748b;margin-bottom:10px;font-weight:600}.pronunciation__breakdown-text{font-size:24px;color:#1e293b;font-weight:500}.pronunciation__syllable{color:#2563eb;font-weight:600}.pronunciation__syllable-dot{color:#64748b;margin:0 8px}.pronunciation__tip-box{background:#2563eb0d;border-radius:12px;padding:15px;margin-bottom:20px;border-left:3px solid #2563eb;animation:slideIn .5s ease-out .4s both}.pronunciation__tip-text{font-size:14px;color:#1e293b;line-height:1.5}.alphabet__letter{font-size:96px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:20px 0 10px;letter-spacing:-2px;line-height:1;padding-top:8px}.alphabet__pronunciation{font-size:24px;font-weight:600;color:#1e293b;margin:15px 0}.alphabet__guide{font-size:18px;color:#64748b;margin:15px 0;font-style:italic}.alphabet__answer-section{opacity:0;transform:translateY(20px);transition:all .5s ease-out;margin-top:0;max-height:0;overflow:hidden}.alphabet__answer-section--show{opacity:1;transform:translateY(0);max-height:1000px}.alphabet__examples{background:#f8fafc;border-radius:12px;padding:20px;margin:20px 0}.alphabet__example{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #e2e8f0}.alphabet__example:last-child{border-bottom:none}.alphabet__example-spanish{font-weight:600;color:#1e293b}.alphabet__example-english{color:#64748b;font-size:14px}.alphabet-spelling-answer-section{opacity:0;transform:translateY(20px);transition:all .5s ease-out;margin-top:0;max-height:0;overflow:hidden}.alphabet-spelling-answer-section.show{opacity:1;transform:translateY(0);max-height:1000px}.spelled-letters{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:20px 0;min-height:60px}.spelled-letter{background:#f8fafc;border:2px solid #e2e8f0;padding:12px 16px;border-radius:8px;font-size:20px;font-weight:600;color:#1e293b;opacity:0;transform:scale(0);animation:letterPop .4s cubic-bezier(.68,-.55,.265,1.55) forwards}@keyframes letterPop{0%{opacity:0;transform:scale(0) rotate(-180deg)}to{opacity:1;transform:scale(1) rotate(0)}}.special-note{background:#2563eb0d;border-radius:12px;padding:15px;margin:20px 0;border-left:3px solid #2563eb}.special-note-text{font-size:14px;color:#1e293b;line-height:1.5}.number-production__display{font-size:96px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:20px 0;line-height:1}.number-production__word{font-size:48px;font-weight:700;color:#1e293b;margin:20px 0;line-height:1.2;opacity:0;transform:translateY(20px);animation:fadeInUp .4s ease forwards}@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}.number-building__display{font-size:72px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:20px 0;letter-spacing:2px;line-height:1}.number-building__breakdown{display:none;background:#f8fafc;border-radius:12px;padding:20px;margin:20px 0;text-align:left;opacity:0;transform:translateY(20px);animation:fadeInUp .4s ease forwards}.number-building__breakdown--show{display:block}.number-building__row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #e2e8f0}.number-building__row:last-child{border-bottom:none}.number-building__row:nth-last-child(2){border-bottom:none}.number-building__row--total{border-top:2px solid #e2e8f0;margin-top:8px;padding-top:12px}.number-building__part{font-weight:600;color:#64748b}.number-building__value{font-weight:600;color:#1e293b}.number-building__rule{background:#2563eb0d;border-radius:12px;padding:15px;margin:20px 0;border-left:3px solid #2563eb;opacity:0;transform:translateY(10px);animation:fadeInUp .4s .3s ease forwards}.number-building__rule strong{color:#2563eb}.number-listening__input{width:100%;max-width:280px;padding:15px 20px;border:2px solid #e2e8f0;border-radius:12px;font-size:24px;font-weight:500;text-align:center;color:#1e293b;margin:30px auto 15px;display:block;transition:all .2s}.number-listening__input::placeholder{color:#cbd5e1;font-weight:400}.number-listening__input:focus{outline:none;border-color:#64748b;background:#fff}.number-listening__input--correct{border-color:#16a34a;background:#f0fdf4;animation:correctBounce .5s ease-out}.number-listening__input--incorrect{border-color:#dc2626;background:#fef2f2;animation:shake .5s ease-out}.number-listening__input:disabled{background:#f8fafc;cursor:not-allowed}.number-listening__note{font-size:14px;color:#64748b;font-style:italic;margin:10px 0;text-align:center}.number-listening__feedback{display:none;background:#f8fafc;border-radius:12px;padding:25px;margin:20px auto;max-width:280px;text-align:center;border-left:4px solid #EA4A71;opacity:0;transform:translateY(20px);animation:slideIn .5s ease-out .2s both}.number-listening__feedback--show{display:block}.number-listening__feedback--correct{border-left-color:#16a34a;background:#f0fdf4}.number-listening__feedback--incorrect{border-left-color:#dc2626}.number-listening__label{font-size:14px;color:#64748b;margin-bottom:8px;font-weight:600}.number-listening__label--correct{color:#16a34a}.number-listening__label--incorrect{color:#dc2626}.number-listening__number{font-size:36px;font-weight:700;color:#1e293b;margin-bottom:4px}.number-listening__spanish{font-size:20px;color:#475569}.btn-check{background:#ea4a71;color:#fff;padding:18px;border-radius:12px;border:none;font-size:18px;font-weight:600;cursor:pointer;transition:all .2s;width:100%}.btn-check:hover:not(:disabled){background:#d63864;transform:translateY(-1px)}.btn-check:disabled{background:#cbd5e1;cursor:not-allowed}.decimal-display{font-size:72px;font-weight:700;background:linear-gradient(135deg,#ea4a71,#e25a41);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:30px 0;letter-spacing:1px;line-height:1}.pattern-note{display:none;font-size:14px;color:#64748b;text-align:center;margin:20px 0;font-style:italic}.pattern-note--show{display:block}.spanish-answer{font-size:32px;font-weight:600;color:#1e293b;margin:25px 0;line-height:1.4;opacity:0;transform:translateY(20px);transition:all .4s ease-out}.spanish-answer--show{opacity:1;transform:translateY(0)}.spanish-answer__highlight{color:#ea4a71;font-weight:700}.rule-highlight{background:#2563eb0d;border-radius:12px;padding:20px;margin:25px 0;border-left:3px solid #2563eb;text-align:center;opacity:0;transform:translateY(20px);transition:all .4s ease-out}.rule-highlight--show{opacity:1;transform:translateY(0)}.rule-highlight__title{font-size:14px;color:#64748b;font-weight:600;margin-bottom:8px}.rule-highlight__text{font-size:20px;color:#1e293b;font-weight:600;margin-bottom:8px}.rule-highlight__subtitle{font-size:16px;color:#64748b;font-style:italic}.grammar-rule-cloze{font-size:26px;color:#1e293b;line-height:1.6;margin:25px 0 35px;font-weight:500;text-align:center}.grammar-blank{display:inline-block;background:#ea4a7114;border:2px dashed rgba(234,74,113,.3);border-radius:20px;color:#ea4a7166;font-weight:600;padding:0 16px;margin:0 2px;text-align:center;transition:none;cursor:default;line-height:1.4}.grammar-blank:before{content:"? ";font-size:18px;color:#ea4a7180;font-weight:700;position:relative;bottom:3px}.grammar-blank-line{display:inline-block;width:80px;border-bottom:2px solid rgba(234,74,113,.4);margin:0 4px;vertical-align:bottom;transform:translateY(-8px)}.flashcard__complete-rule{font-size:26px;color:#1e293b;line-height:1.8;text-align:center;margin:25px 0 30px;font-weight:500}.flashcard__complete-rule .highlight{color:#16a34a;background:#dcfce7;padding:2px 8px;border-radius:4px}.grammar-rule-cloze .grammar-cue,.flashcard__complete-rule .grammar-cue{font-weight:700}.examples-grid{background:#f8fafc;border-radius:12px;padding:20px;margin:20px 0}.examples-grid__title{font-size:14px;color:#64748b;font-weight:600;text-align:center;margin-bottom:15px;text-transform:uppercase;letter-spacing:.5px}.example-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #e2e8f0}.example-row:last-child{border-bottom:none}.example-spanish{font-size:16px;color:#ea4a71;font-weight:600;flex:1;text-align:left;padding-left:20px}.example-spanish .highlight{color:#7c3aed}.example-translation{font-size:14px;color:#64748b;font-style:normal;text-align:left;flex:1;margin-right:20px}.rule-context{background:#e2e8f0;color:#475569;padding:8px 16px;border-radius:20px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;display:inline-block;margin-bottom:20px}.application-sentence{font-size:26px;color:#1e293b;line-height:1.6;margin:20px 0;text-align:center}.grammar-blank{font-size:26px;position:relative;vertical-align:baseline;display:inline-block}.grammar-hint{font-size:18px;opacity:.6;white-space:nowrap;display:inline-block;vertical-align:middle;position:relative;bottom:3px}.flashcard__translation{font-size:18px;color:#64748b;font-style:italic;text-align:center;margin-top:15px}[data-audio-text]{cursor:pointer}.grammar-choice-btn,.grammar-choice-separator{transform:translateY(-2px)}.grammar-choice-btn{background:transparent;border:none;color:#ea4a71cc;font-size:18px;font-weight:600;padding:2px 8px;margin:0 2px;cursor:pointer;transition:all .2s ease;border-radius:12px;position:relative;vertical-align:middle}.grammar-choice-btn:hover:not(:disabled){background:#ea4a711a;color:#ea4a71}.grammar-choice-btn:disabled{cursor:not-allowed;opacity:.5}.grammar-choice-btn--correct{background:#22c55e1a!important;color:#22c55e!important}.grammar-choice-btn--correct:after{content:"✓";margin-left:4px;font-weight:700}.grammar-choice-btn--incorrect{background:#ef44441a!important;color:#ef4444!important;text-decoration:line-through}.grammar-choice-btn--incorrect:after{content:"✗";margin-left:4px;font-weight:700}.grammar-choice-separator{color:#ea4a714d;margin:0 4px;font-weight:600}.flashcard-container--interactive .show-answer-button{display:none}.incorrect-answer{color:#ef4444;font-weight:700;background:#ef44441a;padding:2px 8px;border-radius:4px}.incorrect-answer-text{text-decoration:line-through}.correct-indicator{color:#16a34a;font-size:18px;font-weight:600;text-align:center;margin-bottom:15px;opacity:0;animation:fadeInSuccess .5s ease-out forwards}.correct-indicator svg{width:24px;height:24px;vertical-align:middle;margin-right:8px;fill:#16a34a}@keyframes fadeInSuccess{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.noun-plural-blank{display:inline-block;background:#ea4a7114;border:2px dashed rgba(234,74,113,.3);border-radius:20px;color:#ea4a7166;font-weight:600;padding:0 16px;margin:0 2px;text-align:center;transition:none;cursor:default;line-height:1.4}.noun-plural-blank-line{display:inline-block;width:80px;border-bottom:2px solid rgba(234,74,113,.4);margin:0 4px;vertical-align:bottom;transform:translateY(-8px)}.noun-plural-blank .selected-choice{color:#333;font-weight:600}.choice-buttons-container{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:20px 0 25px}.choice-button{background:#f3f4f6;border:2px solid #e5e7eb;border-radius:20px;padding:10px 20px;font-size:16px;font-weight:500;color:#374151;cursor:pointer;transition:all .2s ease;white-space:nowrap}.choice-button:hover{background:#e5e7eb;border-color:#d1d5db}.choice-button.selected{background:#ea4a711a;border-color:#ea4a7180;color:#ea4a71;font-weight:600}.flashcard-pattern{background:#f8fafc;border-radius:12px;padding:20px;margin:20px 0}.flashcard-pattern__title{font-size:14px;color:#64748b;font-weight:600;text-align:center;margin-bottom:15px;text-transform:uppercase;letter-spacing:.5px}.flashcard-pattern__row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid #e2e8f0}.flashcard-pattern__row:last-child{border-bottom:none}.flashcard-pattern__left{font-weight:600;color:#64748b;flex:1;text-align:left;padding-right:15px}.flashcard-pattern__arrow{color:#94a3b8;font-weight:400;padding:0 10px}.flashcard-pattern__right{font-weight:600;color:#ea4a71;flex:1;text-align:left;padding-left:15px}.flashcard-pattern__right--pending{color:#94a3b8}.flashcard__rule-statement{background:#2563eb0d;border-radius:12px;padding:15px;margin:20px 0 0;border-left:3px solid #2563eb;font-size:14px;color:#1e293b;line-height:1.5}.flashcard__tense{font-style:italic;font-weight:600}.conjugation-table__title{font-size:14px;color:#64748b;font-weight:600;text-align:center;margin-bottom:15px;text-transform:uppercase}
