*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary:#e7000b;--color-primary-hover:#c50009;--color-bg-light:#f9fafb;--color-bg-white:#ffffff;--color-text-dark:#1f2937;--color-text-gray:#6b7280;--color-text-light:#9ca3af;--color-border:#e5e7eb;--color-shadow:rgba(0, 0, 0, 0.1);--color-shadow-hover:rgba(0, 0, 0, 0.15);--color-dark-bg:#111827;--color-dark-card:#1f2937;--color-dark-text:#f9fafb;--color-dark-text-muted:#9ca3af;--color-dark-border:rgba(255, 255, 255, 0.1);--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2rem;--spacing-xl:3rem;--radius-sm:0.5rem;--radius-md:1rem;--radius-lg:1.5rem;--radius-xl:2rem;--transition-base:all 0.3s cubic-bezier(0.4, 0, 0.2, 1)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:16px;line-height:1.6;color:var(--color-text-dark);background-color:var(--color-bg-light);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}html{overflow-x:hidden}body.modal-open{overflow:hidden;position:fixed;width:100%;height:100%}.container{max-width:1280px;margin:0 auto;padding:0 1rem;width:100%}@media (min-width:768px){.container{padding:0 1.5rem}}@media (min-width:1024px){.container{padding:0 2rem}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.header{background-color:var(--color-bg-white);border-bottom:1px solid var(--color-border);padding:1rem 0;position:sticky;top:0;z-index:100;box-shadow:0 1px 3px var(--color-shadow)}.header-content{display:flex;justify-content:space-between;align-items:center}.logo-container{display:flex;align-items:center;gap:.75rem;text-decoration:none;cursor:pointer;transition:all .3s ease}.logo-image{width:2.5rem;height:2.5rem;border-radius:.5rem;object-fit:cover;transition:transform .3s ease}.logo-image:hover{transform:scale(1.05)}.logo{font-size:1.5rem;font-weight:700;color:#e7000b!important;margin:0}@media (min-width:768px){.logo{font-size:1.75rem}.logo-image{width:3rem;height:3rem}}.logo-container:hover .logo{opacity:.8}.logo-container:hover .logo-image{transform:scale(1.05)}.nav{display:flex;gap:.75rem;align-items:center;flex-wrap:wrap}@media (min-width:768px){.nav{gap:1.5rem;flex-wrap:nowrap}}.nav-link{color:var(--color-text-dark);text-decoration:none;font-weight:500;font-size:.85rem;transition:var(--transition-base);position:relative;white-space:nowrap}@media (min-width:768px){.nav-link{font-size:.95rem}}.nav-link:hover{color:var(--color-primary)}.nav-link::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background-color:var(--color-primary);transition:width .3s ease}.nav-link:hover::after{width:100%}.btn-primary{background-color:var(--color-primary);color:#fff;padding:.5rem 1rem;border-radius:var(--radius-lg);text-decoration:none;font-weight:600;font-size:.85rem;transition:var(--transition-base);display:inline-block;white-space:nowrap}@media (min-width:768px){.btn-primary{padding:.625rem 1.5rem;font-size:.95rem}}.btn-primary:hover{background-color:var(--color-primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px rgba(16,185,129,.3)}@media (hover:none){.btn-primary:hover{transform:none}}.categories-nav{background-color:var(--color-bg-white);padding:.75rem 0;border-bottom:1px solid var(--color-border)}.categories-scroll{display:flex;gap:.5rem;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.categories-scroll::-webkit-scrollbar{display:none}.category-btn{flex-shrink:0;padding:.5rem 1rem;border-radius:var(--radius-lg);background-color:var(--color-bg-light);color:var(--color-text-dark);font-weight:500;font-size:.85rem;border:none;cursor:pointer;transition:var(--transition-base);white-space:nowrap;-webkit-tap-highlight-color:transparent}@media (min-width:768px){.category-btn{padding:.625rem 1.25rem;font-size:.9rem}}.category-btn:hover{background-color:#e5e7eb}@media (min-width:1024px){.category-btn:hover{transform:translateY(-1px)}}.category-btn.active{background-color:var(--color-primary);color:#fff;box-shadow:0 2px 8px rgba(16,185,129,.3)}.category-btn:active{transform:scale(.98)}.subjects-nav{background-color:var(--color-bg-white);padding:.75rem 0;border-bottom:1px solid var(--color-border);position:relative}.subjects-scroll{display:flex;gap:.5rem;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;scrollbar-color:var(--color-border) transparent;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;padding-bottom:.5rem;scroll-snap-type:x proximity}.subjects-scroll::-webkit-scrollbar{height:6px}.subjects-scroll::-webkit-scrollbar-track{background:0 0;border-radius:10px}.subjects-scroll::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:10px;transition:var(--transition-base)}.subjects-scroll::-webkit-scrollbar-thumb:hover{background:var(--color-text-light)}.subjects-nav::after,.subjects-nav::before{content:'';position:absolute;top:0;bottom:0;width:40px;pointer-events:none;z-index:10;opacity:0;transition:opacity .3s ease}.subjects-nav::before{left:0;background:linear-gradient(to right,var(--color-bg-white),transparent)}.subjects-nav::after{right:0;background:linear-gradient(to left,var(--color-bg-white),transparent)}.subjects-nav.show-left-fade::before{opacity:1}.subjects-nav.show-right-fade::after{opacity:1}.subject-btn{flex-shrink:0;padding:.5rem .875rem;border-radius:var(--radius-md);background-color:transparent;color:var(--color-text-gray);font-weight:500;font-size:.8rem;border:1px solid var(--color-border);cursor:pointer;transition:var(--transition-base);white-space:nowrap;-webkit-tap-highlight-color:transparent;scroll-snap-align:start}@media (min-width:768px){.subject-btn{padding:.5rem 1rem;font-size:.875rem}}.subject-btn:hover{border-color:var(--color-primary);color:var(--color-primary);background-color:rgba(16,185,129,.05)}.subject-btn.active{border-color:var(--color-primary);color:var(--color-primary);background-color:rgba(16,185,129,.1)}.content-section{padding:1.5rem 0 3rem}@media (min-width:768px){.content-section{padding:2rem 0 4rem}}.content-group{margin-bottom:2rem}@media (min-width:768px){.content-group{margin-bottom:3rem}}.content-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;gap:.5rem}@media (min-width:768px){.content-header{margin-bottom:1.5rem}}.content-title{font-size:1.25rem;font-weight:700;color:var(--color-text-dark);line-height:1.3}@media (min-width:640px){.content-title{font-size:1.5rem}}@media (min-width:768px){.content-title{font-size:2rem}}.btn-ver-mais{display:flex;align-items:center;gap:.25rem;background-color:var(--color-primary);color:#fff;padding:.5rem .875rem;border-radius:var(--radius-xl);font-weight:600;font-size:.75rem;border:none;cursor:pointer;transition:var(--transition-base);white-space:nowrap;flex-shrink:0;-webkit-tap-highlight-color:transparent}@media (min-width:640px){.btn-ver-mais{padding:.625rem 1.25rem;font-size:.875rem;gap:.5rem}}@media (min-width:768px){.btn-ver-mais{padding:.625rem 1.5rem}}.btn-ver-mais:hover{background-color:var(--color-primary-hover);box-shadow:0 4px 12px rgba(16,185,129,.3)}@media (min-width:1024px){.btn-ver-mais:hover{transform:scale(1.05)}}.btn-ver-mais:active{transform:scale(.98)}.btn-ver-mais svg{width:.875rem;height:.875rem;flex-shrink:0}@media (min-width:640px){.btn-ver-mais svg{width:1rem;height:1rem}}.cards-container{display:flex;gap:1rem;overflow-x:auto;overflow-y:hidden;padding-bottom:1.5rem;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--color-primary) var(--color-border);-webkit-overflow-scrolling:touch;position:relative;scroll-snap-type:x proximity}.cards-container::-webkit-scrollbar{height:8px}.cards-container::-webkit-scrollbar-track{background:var(--color-border);border-radius:4px}.cards-container::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:4px;transition:var(--transition-base)}.cards-container::-webkit-scrollbar-thumb:hover{background:var(--color-primary-hover)}@media (max-width:767px){.cards-container::-webkit-scrollbar{height:4px}}@media (min-width:640px){.cards-container{gap:1.25rem}}.card{flex-shrink:0;width:18rem;background-color:var(--color-bg-white);border-radius:var(--radius-xl);overflow:hidden;box-shadow:0 4px 6px var(--color-shadow);cursor:pointer;transition:var(--transition-base);scroll-snap-align:start}@media (min-width:640px){.card{width:20rem}}.card:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 12px 24px var(--color-shadow-hover)}.card-image{width:100%;aspect-ratio:4/3;overflow:hidden;background-color:#f3f4f6;display:flex;align-items:center;justify-content:center}.card-image img{width:100%;height:100%;object-fit:cover}.card-image-placeholder{font-size:3rem;color:#d1d5db}.card-content{padding:1rem}.card-title{font-size:.875rem;font-weight:600;color:var(--color-text-dark);line-height:1.4;margin-bottom:.75rem;min-height:2.8rem;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-footer{display:flex;justify-content:space-between;align-items:center;font-size:.75rem}.card-badge{padding:.25rem .5rem;border-radius:var(--radius-lg);font-weight:500;font-size:.75rem}.card-badge.active{background-color:#d1fae5;color:#065f46}.card-badge.inactive{background-color:#f3f4f6;color:#6b7280}.card-id{color:var(--color-text-light)}.skeleton-card{flex-shrink:0;width:18rem;background-color:var(--color-bg-white);border-radius:var(--radius-xl);overflow:hidden;box-shadow:0 4px 6px var(--color-shadow)}@media (min-width:640px){.skeleton-card{width:20rem}}.skeleton-image{width:100%;aspect-ratio:4/3;background:linear-gradient(90deg,#f3f4f6 25%,#e5e7eb 50%,#f3f4f6 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite}.skeleton-content{padding:1rem}.skeleton-title{height:1rem;background:linear-gradient(90deg,#f3f4f6 25%,#e5e7eb 50%,#f3f4f6 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:.25rem;margin-bottom:.5rem;width:66%}.skeleton-subtitle{height:.75rem;background:linear-gradient(90deg,#f3f4f6 25%,#e5e7eb 50%,#f3f4f6 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:.25rem;width:33%}@keyframes skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}.footer{background-color:var(--color-text-dark);color:#fff;padding:3rem 0 1rem;margin-top:4rem}.footer-content{display:grid;grid-template-columns:repeat(1,1fr);gap:2rem;margin-bottom:2rem}@media (min-width:640px){.footer-content{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.footer-content{grid-template-columns:repeat(4,1fr)}}.footer-column{display:flex;flex-direction:column}.footer-title{font-size:1.5rem;font-weight:700;color:var(--color-primary);margin-bottom:.75rem}.footer-subtitle{font-size:1.125rem;font-weight:600;margin-bottom:1rem}.footer-text{color:var(--color-dark-text-muted);font-size:.875rem;line-height:1.6}.footer-links{list-style:none;display:flex;flex-direction:column;gap:.625rem}.footer-links a{color:var(--color-dark-text-muted);text-decoration:none;font-size:.875rem;transition:var(--transition-base)}.footer-links a:hover{color:var(--color-primary);padding-left:.5rem}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;text-align:center;color:var(--color-dark-text-muted);font-size:.875rem}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);display:flex;justify-content:center;align-items:center;z-index:9999;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.loading-overlay.active{opacity:1;visibility:visible}.loading-spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,.3);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in-up{animation:fadeInUp .6s ease-out forwards}@media (max-width:640px){.nav-link:not(:last-child){display:none}}@media (max-width:480px){.logo{font-size:1.25rem}.logo-image{width:2rem;height:2rem}.logo-container{gap:.5rem}.header{padding:.75rem 0}.container{padding:0 .75rem}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s ease;padding:0;overflow-y:auto}@media (min-width:768px){.modal-overlay{padding:1rem}}.modal-overlay.active{opacity:1;visibility:visible}.modal-container{background-color:var(--color-bg-white);border-radius:var(--radius-xl);width:100%;max-width:56rem;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 25px 50px rgba(0,0,0,.25);transform:scale(.95) translateY(20px);transition:all .3s ease}.modal-overlay.active .modal-container{transform:scale(1) translateY(0)}.modal-header{display:flex;align-items:center;gap:1rem;padding:1.5rem 2rem;border-bottom:1px solid var(--color-border);flex-shrink:0}.modal-back-button,.modal-close-button{background-color:var(--color-bg-light);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:.75rem;cursor:pointer;transition:var(--transition-base);display:flex;align-items:center;justify-content:center}.modal-back-button:hover,.modal-close-button:hover{background-color:var(--color-border);border-color:var(--color-primary)}.modal-back-button svg,.modal-close-button svg{width:1.25rem;height:1.25rem;color:var(--color-text-gray)}.modal-title-section{flex:1}.modal-title{font-size:1.5rem;font-weight:700;color:var(--color-text-dark);margin-bottom:.25rem;line-height:1.2}.modal-subtitle{font-size:.875rem;color:var(--color-text-gray)}.modal-content{padding:1.5rem 2rem 2rem;overflow-y:auto;flex:1}.modal-search-section{margin-bottom:1.5rem}.modal-cards-container{display:grid;grid-template-columns:1fr;gap:1rem}@media (min-width:640px){.modal-cards-container{grid-template-columns:repeat(2,1fr);gap:1.25rem}}@media (min-width:768px){.modal-title{font-size:1.75rem}.modal-subtitle{font-size:1rem}}.modal-loading-cards{display:grid;grid-template-columns:1fr;gap:.75rem}@media (min-width:640px){.modal-loading-cards{grid-template-columns:repeat(2,1fr);gap:1rem}}@media (min-width:768px){.modal-loading-cards{gap:1.25rem}}@media (max-width:768px){.modal-overlay{padding:0;align-items:flex-end}.modal-container{max-height:95vh;border-radius:1rem 1rem 0 0}.modal-header{padding:1rem 1rem;gap:.75rem}.modal-content{padding:1rem}.modal-title{font-size:1.125rem}.modal-subtitle{display:none}.modal-cards-container{grid-template-columns:1fr;gap:.75rem}.modal-back-button,.modal-close-button{padding:.5rem}.modal-back-button svg,.modal-close-button svg{width:1.125rem;height:1.125rem}}@media (max-width:480px){.modal-container{max-height:98vh}.modal-header{padding:.875rem .875rem}.modal-content{padding:.875rem}.modal-title{font-size:1rem}}.subject-list-page{min-height:calc(100vh - 80px);padding:1.5rem 0;background-color:var(--color-bg-light)}@media (min-width:768px){.subject-list-page{padding:2rem 0}}.page-header{display:flex;align-items:flex-start;gap:.75rem;margin-bottom:1.5rem}@media (min-width:768px){.page-header{gap:1rem;margin-bottom:2.5rem}}.back-button{background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:.625rem;cursor:pointer;transition:var(--transition-base);display:flex;align-items:center;justify-content:center;margin-top:.25rem;-webkit-tap-highlight-color:transparent;min-width:2.5rem;min-height:2.5rem}@media (min-width:768px){.back-button{padding:.75rem}}.back-button:hover{background-color:var(--color-bg-light);border-color:var(--color-primary)}.back-button:active{transform:scale(.95)}.back-button svg{width:1.125rem;height:1.125rem;color:var(--color-text-gray)}@media (min-width:768px){.back-button svg{width:1.25rem;height:1.25rem}}.page-title-section{flex:1}.page-title{font-size:1.25rem;font-weight:700;color:var(--color-text-dark);margin-bottom:.5rem;line-height:1.2}@media (min-width:640px){.page-title{font-size:1.75rem}}@media (min-width:768px){.page-title{font-size:2rem}}@media (min-width:1024px){.page-title{font-size:2.5rem}}.page-subtitle{font-size:.9rem;color:var(--color-text-gray)}@media (min-width:640px){.page-subtitle{font-size:1rem}}@media (min-width:768px){.page-subtitle{font-size:1.125rem}}@media (min-width:1024px){.page-subtitle{font-size:1.25rem}}.search-section{margin-bottom:1.5rem}@media (min-width:768px){.search-section{margin-bottom:2rem}}.search-container{display:flex;justify-content:center;margin-bottom:1rem}.search-input-wrapper{position:relative;width:100%;max-width:36rem}.search-input{width:100%;padding:.875rem 2.5rem .875rem 2.75rem;border:2px solid var(--color-border);border-radius:var(--radius-xl);font-size:.95rem;background-color:var(--color-bg-white);transition:var(--transition-base);-webkit-appearance:none;appearance:none}@media (min-width:768px){.search-input{padding:1rem 3rem 1rem 3rem;font-size:1rem}}.search-input:focus{outline:0;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(16,185,129,.1)}.search-icon{position:absolute;left:.875rem;top:50%;transform:translateY(-50%);width:1.125rem;height:1.125rem;color:var(--color-text-gray);pointer-events:none}@media (min-width:768px){.search-icon{left:1rem;width:1.25rem;height:1.25rem}}.clear-search{position:absolute;right:.625rem;top:50%;transform:translateY(-50%);background:0 0;border:none;cursor:pointer;padding:.375rem;border-radius:var(--radius-sm);transition:var(--transition-base);-webkit-tap-highlight-color:transparent;min-width:2rem;min-height:2rem;display:flex;align-items:center;justify-content:center}@media (min-width:768px){.clear-search{right:1rem;padding:.25rem}}.clear-search:hover{background-color:var(--color-bg-light)}.clear-search:active{transform:translateY(-50%) scale(.95)}.clear-search svg{width:1rem;height:1rem;color:var(--color-text-gray)}.search-results-info{text-align:center;margin-bottom:1.5rem}.search-results-info p{color:var(--color-text-gray);font-size:.875rem}.vertical-cards-container{display:grid;grid-template-columns:1fr;gap:.75rem;max-width:48rem;margin:0 auto}@media (min-width:640px){.vertical-cards-container{grid-template-columns:repeat(2,1fr);gap:1rem}}@media (min-width:768px){.vertical-cards-container{gap:1.25rem}}.vertical-card{display:flex;align-items:center;padding:1rem;background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-base);text-decoration:none;color:inherit;-webkit-tap-highlight-color:transparent}@media (min-width:640px){.vertical-card{padding:1.25rem}}@media (min-width:768px){.vertical-card{border-radius:var(--radius-lg);padding:1.5rem}}@media (min-width:1024px){.vertical-card:hover{transform:translateY(-2px)}}.vertical-card:hover{box-shadow:0 4px 16px var(--color-shadow-hover);border-color:var(--color-primary)}.vertical-card:active{transform:scale(.98)}.vertical-card:focus{outline:0;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(16,185,129,.1)}.vertical-card-content{flex:1}.vertical-card-title{font-size:1.125rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.5rem;line-height:1.4}.vertical-card-footer{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.card-badge{padding:.25rem .75rem;border-radius:var(--radius-xl);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.025em}.card-badge.active{background-color:rgba(16,185,129,.1);color:var(--color-primary)}.card-badge.inactive{background-color:rgba(107,114,128,.1);color:var(--color-text-gray)}.card-info{font-size:.875rem;color:var(--color-text-gray)}.vertical-card-arrow{margin-left:.75rem;flex-shrink:0}@media (min-width:768px){.vertical-card-arrow{margin-left:1rem}}.vertical-card-arrow svg{width:1.125rem;height:1.125rem;color:var(--color-text-light);transition:var(--transition-base)}@media (min-width:768px){.vertical-card-arrow svg{width:1.25rem;height:1.25rem}}.vertical-card:hover .vertical-card-arrow svg{color:var(--color-primary)}@media (min-width:1024px){.vertical-card:hover .vertical-card-arrow svg{transform:translateX(2px)}}.no-results{text-align:center;padding:2.5rem 1.5rem;background-color:var(--color-bg-white);border-radius:var(--radius-lg);max-width:32rem;margin:0 auto}@media (min-width:768px){.no-results{padding:4rem 2rem;border-radius:var(--radius-xl)}}.no-results-icon{font-size:3rem;margin-bottom:.75rem;opacity:.5}@media (min-width:768px){.no-results-icon{font-size:4rem;margin-bottom:1rem}}.no-results-title{font-size:1.25rem;font-weight:600;color:var(--color-text-dark);margin-bottom:.5rem}@media (min-width:768px){.no-results-title{font-size:1.5rem}}.no-results-text{color:var(--color-text-gray);font-size:.9rem}@media (min-width:768px){.no-results-text{font-size:1rem}}.loading-cards{display:grid;grid-template-columns:1fr;gap:.75rem;max-width:48rem;margin:0 auto}@media (min-width:640px){.loading-cards{grid-template-columns:repeat(2,1fr);gap:1rem}}@media (min-width:768px){.loading-cards{gap:1.25rem}}.vertical-card-skeleton{display:flex;align-items:center;padding:1rem;background-color:var(--color-bg-white);border:1px solid var(--color-border);border-radius:var(--radius-md)}@media (min-width:640px){.vertical-card-skeleton{padding:1.25rem}}@media (min-width:768px){.vertical-card-skeleton{border-radius:var(--radius-lg);padding:1.5rem}}.skeleton-content{flex:1}.skeleton-title{height:1.25rem;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:loading 1.5s infinite;border-radius:var(--radius-sm);margin-bottom:.75rem;width:80%}.skeleton-subtitle{height:1rem;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:loading 1.5s infinite;border-radius:var(--radius-sm);width:60%}@keyframes loading{0%{background-position:200% 0}100%{background-position:-200% 0}}@media (max-width:768px){.page-header{margin-bottom:1.5rem}.vertical-cards-container{grid-template-columns:1fr}.vertical-card{padding:1.25rem}.vertical-card-title{font-size:1rem}}@media (max-width:480px){.page-title{font-size:1.125rem}.page-subtitle{font-size:.8rem}.vertical-card{padding:.875rem;gap:.5rem}.card-badge{font-size:.65rem;padding:.2rem .5rem}.card-info{font-size:.7rem}.search-section{margin-bottom:1.25rem}.subject-list-page{padding:1.5rem 0}.search-input{padding:.875rem .875rem .875rem 2.75rem}.search-icon{left:.875rem;width:1rem;height:1rem}.clear-search{right:.875rem}}@media (hover:none) and (pointer:coarse){.card:hover{transform:none}.card:active{transform:scale(.97)}.category-btn:hover{transform:none}.subject-btn:hover{transform:none;background-color:transparent}.vertical-card:hover{transform:none}.btn-ver-mais:hover{transform:none}}@media print{.categories-nav,.footer,.header,.loading-overlay,.subjects-nav{display:none}}.start-exam-modal{max-width:500px}.start-exam-content{padding:2rem 1.5rem;display:flex;flex-direction:column;align-items:center;gap:1.5rem}.start-exam-avatar{display:flex;justify-content:center;margin-bottom:.5rem}.avatar-circle{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,#10b981,#059669);border:4px solid #9333ea;overflow:hidden;display:flex;align-items:center;justify-content:center}.avatar-circle img{width:100%;height:100%;object-fit:cover}.start-exam-title{font-size:1.125rem;font-weight:700;text-align:center;color:#ef4444;margin:0}.filters-section{width:100%}.filters-container{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}.filter-btn{padding:.5rem 1rem;border-radius:9999px;font-size:.875rem;font-weight:500;border:2px solid #d1d5db;background-color:#f3f4f6;color:#374151;cursor:pointer;transition:var(--transition-base)}.filter-btn:hover{background-color:#e5e7eb;transform:scale(1.05)}.filter-btn.active{background-color:#ef4444;border-color:#ef4444;color:#fff}.action-buttons{width:100%;display:flex;flex-direction:column;gap:1rem}.action-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem 1.5rem;border-radius:.75rem;font-size:1rem;font-weight:600;border:2px solid;cursor:pointer;transition:var(--transition-base);box-shadow:0 4px 6px -1px rgba(0,0,0,.1)}.action-btn:hover{transform:scale(1.05);box-shadow:0 10px 15px -3px rgba(0,0,0,.1)}.action-btn svg{width:20px;height:20px}.study-btn{background-color:#fff;border-color:#d1d5db;color:#111827}.study-btn:hover{background-color:#f9fafb}.test-btn{background-color:#fff;border-color:#d1d5db;color:#111827}.test-btn:hover{background-color:#f9fafb}.stats-btn{background-color:#9333ea;border-color:#7e22ce;color:#fff}.stats-btn:hover{background-color:#7e22ce}.item-info{width:100%;padding:1rem;border-radius:.75rem;background-color:#f3f4f6;text-align:center}.item-type{font-size:.875rem;font-weight:500;color:#6b7280;margin:0}.item-id{font-size:.75rem;color:#9ca3af;margin:.25rem 0 0 0}@media (max-width:640px){.start-exam-modal{max-width:95%;margin:1rem}.start-exam-content{padding:1.5rem 1rem}.avatar-circle{width:80px;height:80px}.start-exam-title{font-size:1rem}.filter-btn{font-size:.8125rem;padding:.4rem .875rem}.action-btn{font-size:.9375rem;padding:.875rem 1.25rem}.subjects-nav{padding:.5rem 0}.subjects-scroll{padding-bottom:.25rem;gap:.375rem}.subjects-scroll::-webkit-scrollbar{height:4px}.subject-btn{font-size:.75rem;padding:.4rem .75rem}.subjects-nav::after,.subjects-nav::before{width:20px}}.content-group-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;gap:.5rem}@media (min-width:768px){.content-group-header{margin-bottom:1.5rem}}.content-group-header h2{font-size:1.25rem;font-weight:700;color:var(--color-text-dark);line-height:1.3}@media (min-width:640px){.content-group-header h2{font-size:1.5rem}}@media (min-width:768px){.content-group-header h2{font-size:2rem}}.see-more-btn{display:flex;align-items:center;gap:.25rem;background-color:var(--color-primary);color:#fff;padding:.5rem .875rem;border-radius:var(--radius-xl);font-weight:600;font-size:.75rem;border:none;cursor:pointer;transition:var(--transition-base);white-space:nowrap;flex-shrink:0;-webkit-tap-highlight-color:transparent}@media (min-width:640px){.see-more-btn{padding:.625rem 1.25rem;font-size:.875rem;gap:.5rem}}@media (min-width:768px){.see-more-btn{padding:.625rem 1.5rem}}.see-more-btn:hover{background-color:var(--color-primary-hover);box-shadow:0 4px 12px rgba(16,185,129,.3)}@media (min-width:1024px){.see-more-btn:hover{transform:scale(1.05)}}.see-more-btn:active{transform:scale(.98)}.see-more-btn svg{width:.875rem;height:.875rem;flex-shrink:0}@media (min-width:640px){.see-more-btn svg{width:1rem;height:1rem}}.cards-grid{display:flex;gap:1rem;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;padding:.5rem 0 1.5rem 0;margin:0 -1rem;padding-left:1rem;padding-right:1rem}.cards-grid::-webkit-scrollbar{height:8px}.cards-grid::-webkit-scrollbar-track{background:0 0}.cards-grid::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:4px}.cards-grid::-webkit-scrollbar-thumb:hover{background:#c00009}.cards-grid{scrollbar-width:thin;scrollbar-color:var(--color-primary) transparent}@media (min-width:640px){.cards-grid{gap:1.25rem;margin:0 -1.5rem;padding-left:1.5rem;padding-right:1.5rem}}@media (min-width:1024px){.cards-grid{gap:1.5rem;margin:0 -2rem;padding-left:2rem;padding-right:2rem}}.cards-grid .card{min-width:280px;max-width:320px;flex-shrink:0;scroll-snap-align:start}.error-message{text-align:center;padding:40px 20px}.error-message h3{margin-bottom:12px;color:var(--color-text-dark);font-size:1.25rem;font-weight:600}.error-message p{color:var(--color-text-light);margin-bottom:24px;line-height:1.6}.error-message button{padding:12px 24px;cursor:pointer}.no-content{text-align:center;padding:40px 20px}.no-content h3{margin-bottom:12px;font-size:1.25rem;font-weight:600;color:var(--color-text-dark)}.no-content p{color:var(--color-text-light);line-height:1.6}.fade-in-up{animation:fadeInUp .5s ease-out forwards;opacity:0}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.cards-grid .card:first-child{animation-delay:.1s}.cards-grid .card:nth-child(2){animation-delay:.2s}.cards-grid .card:nth-child(3){animation-delay:.3s}.cards-grid .card:nth-child(4){animation-delay:.4s}.cards-grid .card:nth-child(5){animation-delay:.5s}.cards-grid .card:nth-child(6){animation-delay:.6s}.cards-grid .card:nth-child(7){animation-delay:.7s}.cards-grid .card:nth-child(8){animation-delay:.8s}.cards-grid .card:nth-child(9){animation-delay:.9s}.cards-grid .card:nth-child(10){animation-delay:1s}