.profile-menu{position:relative}.profile-menu__trigger{display:flex;align-items:center;gap:6px;background:#c89aff1f;border:2px solid rgba(200,154,255,.35);border-radius:var(--radius-pill);padding:6px 10px 6px 12px;cursor:pointer;transition:background .15s ease,border-color .15s ease}.profile-menu__trigger:hover{background:#c89aff38;border-color:#c89aff8c}.profile-menu__streak-pill{font-family:Fredoka,sans-serif;font-size:.95rem;font-weight:700;color:var(--color-purple);line-height:1}.profile-menu__avatar{font-size:1rem;line-height:1}.profile-menu__dropdown{position:absolute;top:calc(100% + 10px);right:0;min-width:210px;background:var(--color-white);border-radius:var(--radius-md);box-shadow:0 8px 32px #5c3d8f24;border:1.5px solid rgba(200,154,255,.25);padding:16px;z-index:100}.profile-menu__identity{display:flex;align-items:center;gap:10px;margin-bottom:8px}.profile-menu__avatar-lg{font-size:2.25rem;line-height:1}.profile-menu__name{font-family:Fredoka,sans-serif;font-size:1.2rem;font-weight:600;color:var(--color-purple)}.profile-menu__streak-row{font-family:Fredoka,sans-serif;font-size:.95rem;font-weight:700;color:var(--color-purple);opacity:.7;padding:0 0 8px 2px}.profile-menu__divider{border:none;border-top:1.5px solid rgba(200,154,255,.2);margin:8px 0}.profile-menu__item{display:block;width:100%;text-align:left;background:none;border:none;padding:9px 8px;font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;color:var(--color-purple);cursor:pointer;border-radius:10px;transition:background .15s ease}.profile-menu__item:hover:not(:disabled){background:#c89aff1a}.profile-menu__item--disabled{color:#5c3d8f4d;cursor:default;font-size:.9rem}.profile-menu__item--signout{color:#5c3d8f8c}.profile-menu__item--signout:hover{color:var(--color-purple)}.page-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin-bottom:var(--space-3)}.page-header__title{font-family:Fredoka,sans-serif;font-size:1.75rem;font-weight:700;color:var(--color-purple);white-space:nowrap;text-align:center}@media (min-width: 480px){.page-header__title{font-size:2.5rem}}.page-header__start{display:flex;align-items:center}.page-header__end{display:flex;justify-content:flex-end;align-items:center}.page-header__back{padding:6px 14px;line-height:1}.page-header__back-label{display:none}@media (min-width: 480px){.page-header__back{padding:6px 20px}.page-header__back-label{display:inline;margin-left:4px}}.grade-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-4);width:100%;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,filter .15s ease;background:var(--color-white);border-radius:var(--radius-md);box-shadow:0 4px 24px #c89aff2e;border:1.5px solid rgba(200,154,255,.2)}.grade-card:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 10px 32px #c89aff59;filter:brightness(1.02)}.grade-card:active{transform:scale(.97)}.grade-card__emoji{font-size:3.5rem;line-height:1;margin-bottom:var(--space-2)}.grade-card__title{font-family:Fredoka,sans-serif;font-size:1.75rem;font-weight:600;color:var(--color-purple);margin-bottom:var(--space-2)}.grade-card__progress-track{width:100%;height:12px;border-radius:var(--radius-pill);background:#c89aff33;margin-bottom:var(--space-1);overflow:hidden}.grade-card__progress-fill{height:100%;border-radius:var(--radius-pill);background:var(--gradient-progress);transition:width .5s ease}.grade-card__count{font-family:Nunito,sans-serif;font-size:.95rem;font-weight:700;color:#5c3d8f99;margin-bottom:var(--space-2)}.grade-card__cta{font-family:Nunito,sans-serif;font-size:1rem;font-weight:800;color:var(--color-lavender)}.home-page__subtitle{font-family:Nunito,sans-serif;font-size:1.1rem;font-weight:600;color:#5c3d8fb3;margin-bottom:var(--space-4)}.home-page__grade-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--space-3)}.home-page--loading{display:flex;justify-content:center;align-items:center;min-height:60vh;font-family:Fredoka,sans-serif;font-size:1.5rem;color:var(--color-purple)}.home-page__section-heading{font-family:Fredoka,sans-serif;font-size:1.75rem;font-weight:600;color:var(--color-purple);margin-top:var(--space-5);margin-bottom:var(--space-3)}.home-page__challenge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-3)}.challenge-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-4);width:100%;cursor:pointer;background:var(--color-white);border-radius:var(--radius-md);box-shadow:0 4px 24px #c89aff2e;border:1.5px solid rgba(200,154,255,.2);transition:transform .15s ease,box-shadow .15s ease;font-family:inherit}.challenge-card:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 10px 32px #c89aff59}.challenge-card:active{transform:scale(.97)}.challenge-card__emoji{font-size:3rem;line-height:1;margin-bottom:var(--space-1)}.challenge-card__title{font-family:Fredoka,sans-serif;font-size:1.5rem;font-weight:600;color:var(--color-purple);margin-bottom:var(--space-1)}.challenge-card__desc{font-family:Nunito,sans-serif;font-size:.95rem;font-weight:600;color:#5c3d8f99;margin-bottom:var(--space-2)}.challenge-card__cta{font-family:Nunito,sans-serif;font-size:1rem;font-weight:800;color:var(--color-lavender)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,48px);gap:6px;justify-content:center;margin:var(--space-2) 0}.lesson-cell{width:48px;height:48px;border-radius:var(--radius-cell);font-family:Nunito,sans-serif;font-size:.85rem;font-weight:700;border:none;cursor:pointer;transition:transform .1s ease}.lesson-cell--completed{background:linear-gradient(135deg,#c89aff,#ff85c8,#ffd166,#a8edba);color:var(--color-white)}.lesson-cell--completed:hover{transform:scale(1.08)}.lesson-cell--next{background:var(--gradient-unicorn);color:var(--color-white);animation:pulse 1.2s ease-in-out infinite;box-shadow:0 2px 10px #c89aff80}.lesson-cell--locked{background:#c89aff1f;color:#5c3d8f4d;cursor:default}.grade-section{margin-bottom:var(--space-4)}.grade-section__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-2)}.grade-section__title{font-family:Fredoka,sans-serif;font-size:1.75rem;font-weight:600;color:var(--color-purple);display:flex;align-items:center;gap:var(--space-1)}.grade-section__count{font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;color:#5c3d8f99}.grade-section__progress-track{height:14px;border-radius:var(--radius-pill);background:#c89aff33;margin-bottom:var(--space-2);overflow:hidden}.grade-section__progress-fill{height:100%;border-radius:var(--radius-pill);background:var(--gradient-progress);transition:width .5s ease}.grade-section__action{display:flex;justify-content:center;margin-top:var(--space-3)}.grade-section__complete-msg{font-family:Fredoka,sans-serif;font-size:1.5rem;font-weight:600;color:var(--color-purple)}.grade-page__title{font-family:Fredoka,sans-serif;font-size:2rem;font-weight:700;color:var(--color-purple);margin-bottom:var(--space-3)}.grade-page--loading{display:flex;justify-content:center;align-items:center;min-height:60vh;font-family:Fredoka,sans-serif;font-size:1.5rem;color:var(--color-purple)}.problem-display{text-align:center}.problem-display__counter{font-family:Nunito,sans-serif;font-size:1rem;font-weight:600;color:#5c3d8f99;margin-bottom:var(--space-2)}.problem-display__prompt{font-family:Fredoka,sans-serif;font-size:3rem;font-weight:600;color:var(--color-purple);line-height:1.2}@media (max-width: 600px){.problem-display__prompt{font-size:2rem}}.answer-input{display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.answer-input__field{font-family:Fredoka,sans-serif;font-size:2.5rem;font-weight:600;text-align:center;width:160px;padding:12px 16px;border:3px solid var(--color-lavender);border-radius:var(--radius-sm);background:var(--color-white);color:var(--color-purple);outline:none;transition:border-color .15s ease,box-shadow .15s ease;-moz-appearance:textfield}.answer-input__field::-webkit-outer-spin-button,.answer-input__field::-webkit-inner-spin-button{-webkit-appearance:none}.answer-input__field:focus{border-color:var(--color-pink);box-shadow:0 0 0 4px #ff85c840}.answer-input__field:disabled{opacity:.5}.answer-input__submit{min-width:160px}.answer-input--hidden{opacity:0;pointer-events:none;height:0;overflow:hidden}@media (max-width: 600px){.answer-input{width:100%}.answer-input__field{width:100%;font-size:3rem}.answer-input__submit{width:100%}}@keyframes popIn{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.feedback{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);border-radius:var(--radius-md);padding:var(--space-4);text-align:center}.feedback--correct{background:#a8edbaf2;animation:popIn .2s ease-out}.feedback--wrong{background:#ffe4f3f2;animation:shake .4s ease-in-out}.feedback__emoji{font-size:5rem;line-height:1}.feedback--wrong .feedback__emoji{font-size:3rem}.feedback__message{font-family:Fredoka,sans-serif;font-size:2rem;font-weight:600;color:var(--color-purple)}.feedback--wrong .feedback__message{font-family:Nunito,sans-serif;font-size:1.25rem;font-weight:700}.lesson-complete{background:var(--gradient-unicorn);border-radius:var(--radius-md);padding:var(--space-5) var(--space-4);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.lesson-complete__emojis{font-size:4rem;animation:bounce 1.4s ease-in-out infinite}.lesson-complete__title{font-family:Fredoka,sans-serif;font-size:2.5rem;font-weight:700;color:var(--color-white)}.lesson-complete__streak{font-family:Fredoka,sans-serif;font-size:2rem;font-weight:700;color:var(--color-white)}.lesson-complete__unlock{display:flex;align-items:center;gap:var(--space-1);background:var(--gradient-gold);color:var(--color-white);font-family:Fredoka,sans-serif;font-size:1.5rem;font-weight:700;padding:14px 28px;border-radius:var(--radius-md);box-shadow:0 2px 12px #ffd16680}.lesson-complete .btn-secondary{color:var(--color-white);border-color:var(--color-white)}.lesson-complete .btn-secondary:hover{background:#fff3}.lesson-page__lesson-title{font-family:Fredoka,sans-serif;font-size:1.25rem;font-weight:600;color:var(--color-purple);margin-bottom:var(--space-3)}.lesson-page__card{max-width:900px;margin:0 auto;min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-3)}@media (max-width: 600px){.lesson-page__card{min-height:0;padding:var(--space-4) var(--space-3);gap:var(--space-4)}}.lesson-page__locked{max-width:420px;margin:var(--space-5) auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.lesson-page__locked-emoji{font-size:4rem}.lesson-page__locked h2{font-family:Fredoka,sans-serif;font-size:2rem;color:var(--color-purple)}.lesson-page__locked p{font-size:1rem;color:#5c3d8fb3}.lesson-page--loading{display:flex;justify-content:center;align-items:center;min-height:60vh;font-family:Fredoka,sans-serif;font-size:1.5rem;color:var(--color-purple)}.landing-page{min-height:100vh}.landing-nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 48px;height:60px;background:#fdf5ffe0;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(200,154,255,.18)}.landing-nav__brand{display:flex;align-items:center;gap:8px}.landing-nav__logo{font-size:1.4rem;line-height:1}.landing-nav__name{font-family:Fredoka,sans-serif;font-size:1.15rem;font-weight:700;color:var(--color-purple)}.landing-nav__signin{background:none;border:1.5px solid rgba(200,154,255,.45);border-radius:var(--radius-pill);padding:7px 20px;font-family:Nunito,sans-serif;font-size:.9rem;font-weight:700;color:var(--color-purple);cursor:pointer;transition:background .15s ease,box-shadow .15s ease}.landing-nav__signin:hover{background:#c89aff1a;box-shadow:0 2px 10px #c89aff33}@media (max-width: 768px){.landing-nav{padding:0 var(--space-3)}}.landing-hero-section{max-width:1080px;margin:0 auto;padding:64px 48px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px}.landing-left{display:flex;flex-direction:column;gap:var(--space-5)}.landing-hero__logo{font-size:5rem;line-height:1;margin-bottom:var(--space-2)}.landing-hero__title{font-family:Fredoka,sans-serif;font-size:3.5rem;font-weight:700;color:var(--color-purple);margin-bottom:var(--space-1);line-height:1.1}.landing-hero__tagline{font-family:Nunito,sans-serif;font-size:1.25rem;font-weight:600;color:var(--color-purple);margin-bottom:var(--space-2)}.landing-hero__sub{font-family:Nunito,sans-serif;font-size:1rem;color:var(--color-purple);opacity:.75;line-height:1.6;margin-bottom:var(--space-3);max-width:400px}.landing-hero__features{display:flex;gap:var(--space-1);flex-wrap:wrap}.landing-feature-pill{background:var(--color-white);border:1.5px solid rgba(200,154,255,.35);border-radius:var(--radius-pill);padding:8px 20px;font-family:Nunito,sans-serif;font-size:.95rem;font-weight:700;color:var(--color-purple);box-shadow:0 2px 10px #c89aff26}.landing-signin{display:flex;flex-direction:column;gap:var(--space-2)}.landing-signin__label{font-family:Nunito,sans-serif;font-size:1rem;font-weight:600;color:var(--color-purple);opacity:.6;transition:opacity .35s ease,font-size .2s ease;max-width:340px}.landing-signin--solved .landing-signin__label{opacity:1;font-weight:800;font-size:1.1rem}@keyframes signInPulse{0%,to{transform:scale(1)}50%{transform:scale(1.04)}}.landing-signin--solved .landing-signin__btn{animation:signInPulse 1.6s ease-in-out infinite}.clerk-signin-btn{display:inline-flex;align-items:center;gap:10px;padding:12px 28px;border-radius:var(--radius-pill);border:1.5px solid rgba(200,154,255,.5);background:var(--color-white);color:var(--color-purple);font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 2px 10px #c89aff33;transition:box-shadow .15s ease,transform .1s ease}.clerk-signin-btn:hover{box-shadow:0 4px 18px #c89aff59;transform:translateY(-1px)}.clerk-signin-btn--large{padding:16px 40px;font-size:1.15rem}.landing-right{display:flex;flex-direction:column;gap:var(--space-2)}.landing-demo__label{font-family:Fredoka,sans-serif;font-size:1.3rem;font-weight:600;color:var(--color-purple);text-align:center}.landing-demo__card{padding:var(--space-5) var(--space-4);min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-3);box-shadow:0 8px 40px #c89aff47;border:2px solid rgba(200,154,255,.3)}.landing-demo__card .problem-display__counter{display:none}.landing-demo__solved{text-align:center;animation:popIn .2s ease-out}.landing-demo__solved-emoji{font-size:4rem;line-height:1;margin-bottom:var(--space-1)}.landing-demo__solved-message{font-family:Fredoka,sans-serif;font-size:2rem;font-weight:600;color:var(--color-purple)}.landing-features-section{background:var(--color-white);padding:80px 48px}.landing-section-title{font-family:Fredoka,sans-serif;font-size:2rem;font-weight:700;color:var(--color-purple);text-align:center;max-width:600px;margin:0 auto var(--space-5);line-height:1.2}.landing-features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);max-width:1080px;margin:0 auto}.landing-feature-card{background:linear-gradient(160deg,#fdf0ff,#fff0f8);border-radius:var(--radius-card);padding:var(--space-4);border:1.5px solid rgba(200,154,255,.2);box-shadow:0 2px 12px #c89aff1f}.landing-feature-card__icon{font-size:2.5rem;line-height:1;margin-bottom:var(--space-2)}.landing-feature-card__title{font-family:Fredoka,sans-serif;font-size:1.2rem;font-weight:600;color:var(--color-purple);margin-bottom:var(--space-1)}.landing-feature-card__body{font-family:Nunito,sans-serif;font-size:.9rem;color:var(--color-purple);opacity:.8;line-height:1.55;margin:0}.landing-spotlight-section{max-width:1080px;margin:0 auto;padding:80px 48px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px}.landing-alt-bg{background:var(--color-white)}.landing-spotlight__badge{display:inline-block;background:#c89aff26;border:1.5px solid rgba(200,154,255,.3);border-radius:var(--radius-pill);padding:6px 16px;font-family:Nunito,sans-serif;font-size:.85rem;font-weight:700;color:var(--color-purple);margin-bottom:var(--space-2)}.landing-spotlight__title{font-family:Fredoka,sans-serif;font-size:1.9rem;font-weight:700;color:var(--color-purple);margin-bottom:var(--space-2);line-height:1.2}.landing-spotlight__body{font-family:Nunito,sans-serif;font-size:1rem;color:var(--color-purple);opacity:.8;line-height:1.6;margin-bottom:var(--space-3)}.landing-topic-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.landing-topic-list li{font-family:Nunito,sans-serif;font-size:.95rem;font-weight:600;color:var(--color-purple);background:#c89aff1a;border-radius:12px;padding:10px 16px}.worksheet-mock{background:var(--color-white);border-radius:var(--radius-card);border:2px solid rgba(200,154,255,.25);box-shadow:0 8px 40px #c89aff33;padding:var(--space-4);font-family:Nunito,sans-serif}.worksheet-mock__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-2);padding-bottom:var(--space-2);border-bottom:1.5px solid rgba(200,154,255,.2)}.worksheet-mock__logo{font-family:Fredoka,sans-serif;font-size:1rem;font-weight:700;color:var(--color-purple)}.worksheet-mock__field{font-size:.8rem;color:var(--color-purple);opacity:.55}.worksheet-mock__title{font-family:Fredoka,sans-serif;font-size:1.2rem;font-weight:700;color:var(--color-purple);text-align:center;margin-bottom:var(--space-3)}.worksheet-mock__problems{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2) var(--space-3)}.worksheet-mock__problems span{font-family:Fredoka,sans-serif;font-size:1.05rem;color:var(--color-purple);background:linear-gradient(160deg,#fdf0ff,#fff0f8);border-radius:10px;padding:10px 14px;text-align:center;border:1px solid rgba(200,154,255,.2)}.challenges-mock{background:linear-gradient(135deg,#5c3d8f,#8b5cf6);border-radius:var(--radius-card);padding:var(--space-5) var(--space-4);color:#fff;text-align:center;box-shadow:0 12px 40px #5c3d8f59}.challenges-mock__timer{font-family:Fredoka,sans-serif;font-size:1.4rem;font-weight:600;margin-bottom:var(--space-2);opacity:.9}.challenges-mock__score{font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;margin-bottom:var(--space-4);opacity:.85}.challenges-mock__problem{font-family:Fredoka,sans-serif;font-size:2.75rem;font-weight:700;margin-bottom:var(--space-3)}.challenges-mock__input{font-family:Nunito,sans-serif;font-size:1.1rem;opacity:.55;background:#ffffff26;border-radius:12px;padding:8px 28px;display:inline-block}.landing-challenge-cards{display:flex;flex-direction:column;gap:var(--space-2)}.landing-challenge-card{display:flex;align-items:flex-start;gap:var(--space-2);background:#c89aff14;border-radius:var(--radius-card);padding:var(--space-3);border:1.5px solid rgba(200,154,255,.2)}.landing-challenge-card__icon{font-size:2rem;flex-shrink:0;margin-top:2px}.landing-challenge-card strong{display:block;font-family:Fredoka,sans-serif;font-size:1.1rem;color:var(--color-purple);margin-bottom:4px}.landing-challenge-card p{font-family:Nunito,sans-serif;font-size:.9rem;color:var(--color-purple);opacity:.8;line-height:1.5;margin:0}.landing-cta-section{background:linear-gradient(135deg,#5c3d8f,#8b5cf6);padding:96px 48px;text-align:center}.landing-cta__inner{max-width:580px;margin:0 auto}.landing-cta__emoji{font-size:3rem;line-height:1;margin-bottom:var(--space-2)}.landing-cta__title{font-family:Fredoka,sans-serif;font-size:2.4rem;font-weight:700;color:#fff;margin-bottom:var(--space-2);line-height:1.15}.landing-cta__body{font-family:Nunito,sans-serif;font-size:1.05rem;color:#ffffffd9;line-height:1.6;margin-bottom:var(--space-4)}.landing-cta-section .clerk-signin-btn{background:#fff;color:var(--color-purple);border-color:#ffffff80;box-shadow:0 4px 20px #0003}.landing-cta-section .clerk-signin-btn:hover{box-shadow:0 6px 28px #00000047}@media (max-width: 960px){.landing-features-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.landing-hero-section{grid-template-columns:1fr;padding:var(--space-4) 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