@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";.app-layout{display:flex;flex-direction:column;min-height:100vh}.app-header{background:#0f172acc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:1000;height:64px;display:flex;align-items:center}.header-content{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem;display:flex;justify-content:space-between;align-items:center;position:relative;height:100%}@media(max-width:768px){.header-content{justify-content:center}}.brand-logo{display:flex;align-items:center;gap:.75rem;z-index:10;transition:opacity .2s}.brand-logo.hidden{opacity:0;pointer-events:none}.header-logo-img{height:64px;width:auto}.brand-container{display:flex;flex-direction:column;line-height:1.1}.brand-text-main{font-weight:700;font-size:1.25rem;letter-spacing:-.025em;background:linear-gradient(135deg,var(--brand-primary),var(--brand-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.brand-text-sub{font-size:.7rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}@media(min-width:769px){.brand-container{margin-left:1.25rem}}.mobile-menu-toggle{display:none;background:transparent;border:none;color:var(--text-primary);cursor:pointer;z-index:100;padding:.5rem;position:absolute;right:1.5rem}.main-nav{display:flex;align-items:center}.desktop-menu-items{display:flex;align-items:center;gap:1.5rem}.nav-link{color:var(--text-secondary);font-weight:500;transition:var(--transition-fast);font-size:.95rem}.nav-link:hover{color:var(--text-primary)}.user-section{display:flex;align-items:center;gap:1rem;padding-left:1.5rem;border-left:1px solid var(--border-color)}.profile-link{display:flex;align-items:center;gap:.75rem;padding:.4rem .75rem;border-radius:var(--radius-md);transition:var(--transition-fast)}.profile-link:hover{background:#ffffff0d}.profile-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--brand-primary),var(--brand-secondary));border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 0 15px #6366f14d}.profile-name{font-weight:600;font-size:.95rem}.logout-btn{background:transparent;color:var(--text-secondary);font-size:.9rem;font-weight:500;padding:.4rem .75rem;border:1px solid transparent}.logout-btn:hover{color:#ef4444}.mobile-only-menu-items{display:none}@media(max-width:768px){.mobile-menu-toggle{display:flex}.desktop-menu-items{display:none}.main-nav.mobile-open{position:fixed;inset:0;background-color:var(--bg-primary);z-index:9999;display:flex;flex-direction:column;width:100%;height:100vh;animation:slideIn .3s ease-out}.main-nav.mobile-open .mobile-only-menu-items{display:flex;flex-direction:column;width:100%;height:100%}.mobile-menu-header{height:65px;width:100%;display:flex;align-items:center;justify-content:center;padding:0 1.5rem;border-bottom:1px solid rgba(255,255,255,.1);background:var(--bg-secondary);position:relative;flex-shrink:0}.mobile-user-avatar{position:absolute;left:1.5rem;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center}.mobile-user-avatar .profile-icon{width:40px;height:40px}.mobile-username{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.mobile-close-btn{position:absolute;right:1.5rem;top:50%;transform:translateY(-50%);background:transparent;color:var(--text-primary);padding:.5rem;display:flex}.mobile-menu-body{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2rem;width:100%;padding:2rem}.mobile-nav-link{font-size:1.5rem;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:.75rem;padding:1rem;width:100%;justify-content:center;transition:var(--transition-fast)}.mobile-logout-btn{font-size:1.5rem;font-weight:600;color:#ef4444;background:transparent;display:flex;align-items:center;gap:.75rem;padding:1rem;width:100%;justify-content:center}.main-nav.mobile-open .mobile-guest-container{display:flex;flex-direction:column;width:100%;height:100%;align-items:center;justify-content:center;gap:2rem;position:relative}.mobile-guest-close{position:absolute;top:1.5rem;right:1.5rem;background:transparent;color:var(--text-primary);padding:.5rem;display:flex}}@keyframes slideIn{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.app-main{flex:1}#root{width:100%;margin:0;padding:0;text-align:center;isolation:isolate}.app-layout{height:100vh;height:100dvh;overflow:hidden;display:flex;flex-direction:column;background-color:var(--bg-primary);width:100%;position:relative}.app-header{padding:1rem 1.25rem;border-bottom:1px solid var(--border-color);background:#0f172af2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:50;width:100%}.header-content{display:flex;justify-content:space-between;align-items:center;width:100%;margin:0 auto}.brand-container{display:flex;flex-direction:column;line-height:1.1;justify-content:center;gap:2px}.brand-gradient{background:linear-gradient(135deg,var(--brand-primary),var(--brand-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.brand-text-main{font-weight:800;font-size:1.5rem;background:linear-gradient(135deg,var(--brand-primary),var(--brand-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.brand-text-sub{font-size:.6rem;color:#fff;font-weight:400;text-transform:uppercase;letter-spacing:.5px}.brand-logo{font-size:1.25rem;font-weight:800;color:var(--brand-primary);letter-spacing:-.02em;text-decoration:none;display:flex;align-items:center;gap:.5rem}.header-logo-img{height:28px;width:auto}.mobile-menu-toggle{display:block;background:transparent;border:none;color:var(--text-primary);cursor:pointer;z-index:100;margin-left:auto}@media(max-width:768px){.header-content{position:relative;padding:0 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.2s;flex-shrink:0}.back-icon-btn:hover{background:var(--brand-primary);color:#fff;border-color:var(--brand-primary);transform:translate(-2px)}.header-row{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.user-section{display:flex;align-items:center;gap:1.5rem}.profile-link{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-primary);padding:.25rem;border-radius:var(--radius-sm);transition:background-color .2s}.profile-link:hover{background-color:#ffffff0d}.profile-icon{width:36px;height:36px;border-radius:50%;background:var(--bg-secondary);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;color:var(--brand-primary);box-shadow:var(--shadow-sm)}.profile-name{font-size:.95rem;font-weight:500}.logout-btn{padding:.5rem 1rem;background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);font-size:.9rem;border-radius:var(--radius-md)}.logout-btn:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--text-secondary)}.nav-link{font-weight:500;color:var(--text-secondary);text-decoration:none;font-size:.95rem;transition:color .2s ease}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.app-main{flex:1;display:flex;flex-direction:column;width:100%;position:relative;overflow-x:hidden;overflow-y:auto}.container{padding:1.5rem 1rem;width:100%;box-sizing:border-box}.dashboard-container{padding:1.5rem 1rem 5rem;width:100%;box-sizing:border-box}.dashboard-header{margin-bottom:2rem}.dashboard-title-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.5rem;text-align:left}.dashboard-tabs{display:flex;gap:1.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.dashboard-tab-btn{background:none;border:none;padding:.75rem 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.card-meta{margin-top:0!important;padding-top:0!important;border-top:none!important;width:auto!important;min-width:auto!important;flex-shrink:0;gap:.5rem}@media(max-width:380px){.card.compact .badge{display:none}}.classroom-header-row{display:flex;flex-direction:column;gap:1rem;margin-bottom:1rem}.classroom-invite-btn{width:100%;justify-content:center}.home-container{position:relative;width:100%;height:100%;overflow:hidden;display:flex;flex-direction:column;background:radial-gradient(circle at 50% 50%,#1e293b,#0f172a);z-index:10}.home-content-wrapper{padding:0;gap:0;display:flex;flex-direction:column;align-items:center;width:100%;min-height:100%;flex:1;justify-content:space-between}.hero-section{text-align:center;padding:2.25rem 1.5rem;flex:1;width:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;box-sizing:border-box;position:relative;gap:1.75rem}.hero-logo-img{height:clamp(120px,30vh,160px);width:auto;filter:drop-shadow(0 0 20px 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.card-header-row{flex:1;max-width:250px}body,html{overflow-y:auto;min-height:100vh}body.no-scroll{overflow:hidden}.app-layout{min-height:100vh;height:auto;overflow:visible}.app-main{height:auto;overflow:visible}.classroom-header-row{flex-direction:row;justify-content:space-between;align-items:flex-start}.classroom-invite-btn{width:auto}.home-container{position:relative;flex:1;width:100%;overflow:hidden;display:flex;flex-direction:column;box-sizing:border-box}.home-container .container{max-width:100%;padding:0}.home-content-wrapper{flex-direction:column;justify-content:center;padding:0;height:100%;gap:0;box-sizing:border-box}.hero-logo-img{height:auto;width:200px;margin-bottom:0}.hero-logo{width:200px;height:200px;margin-bottom:2rem}.hero-title{font-size:4rem;margin-bottom:1.5rem}.cta-group{display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));gap:1rem;width:min(720px,100%);justify-content:center;align-items:stretch;margin-top:3rem}.btn-hero{padding:1rem 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var(--border-color);margin-bottom:2rem}@media(max-width:768px){.dashboard-tabs{margin-bottom:.35rem}}.dashboard-tab-btn{background:none;border:none;padding:1rem 0;font-size:1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.6rem;transition:all var(--transition-fast);color:var(--text-secondary);position:relative;border-bottom:2px solid transparent;margin-bottom:-2px}.dashboard-tab-btn:hover{color:var(--text-primary)}.dashboard-tab-btn.active{color:var(--brand-primary);border-bottom-color:var(--brand-primary)}.dashboard-controls{display:flex;align-items:center;gap:1.5rem;flex-wrap:nowrap;min-width:0}@media(min-width:1200px){.dashboard-controls{margin-right:2rem}}@media(max-width:768px){.dashboard-controls{flex-direction:row;align-items:center;width:100%;gap:.75rem;flex-wrap:nowrap}}.dashboard-action-btns{display:flex;gap:1rem;align-items:center}.dashboard-header .dashboard-action-btns{width:440px}@media(max-width:768px){.dashboard-header .dashboard-action-btns{width:auto}}.dashboard-action-btns .btn-primary,.dashboard-action-btns .btn-secondary{padding:.75rem 1.25rem;font-size:1rem;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:.75rem}@media(max-width:480px){.dashboard-controls{flex-wrap:nowrap;min-width:0}.dashboard-action-btns{flex-direction:row;flex:1;min-width:0;gap:.5rem}.dashboard-action-btns .btn-primary,.dashboard-action-btns .btn-secondary{width:auto;flex:1;justify-content:center;min-width:0;padding:.75rem .5rem;font-size:.9rem;white-space:nowrap}.dashboard-action-btns .btn-invite{flex:0 0 auto;padding:.75rem;min-width:auto}.dashboard-action-btns .btn-folder{padding-left:.5rem;padding-right:.5rem}.dashboard-controls{gap:.5rem}}.dashboard-action-btns .btn-invite{padding:.75rem;min-width:auto}.dashboard-controls .view-mode-toggle{flex-shrink:0}.view-mode-toggle{display:flex;background:var(--bg-secondary);padding:.25rem;border-radius:var(--radius-md);border:1px solid var(--border-color)}.view-mode-btn{padding:.4rem;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;width:32px;transition:var(--transition-fast);background:transparent;color:var(--text-secondary)}.view-mode-btn.active{background:var(--brand-primary);color:#fff}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}@media(max-width:768px){.dashboard-grid{grid-template-columns:1fr;min-width:0}.dashboard-grid>*{min-width:0;max-width:100%}.dashboard-grid .card{overflow:hidden}.dashboard-grid .card .card-header-row,.dashboard-grid .card .card-meta{min-width:0}}.dashboard-list{display:flex;flex-direction:column;gap:1rem}.card{height:100%;transition:var(--transition-fast);cursor:pointer;text-decoration:none;color:inherit;display:flex;flex-direction:column}.card:hover{transform:translateY(-4px);border-color:var(--brand-primary);box-shadow:0 10px 30px -10px #6366f166}.card.compact{flex-direction:row;align-items:center;padding:1rem 1.5rem;gap:2rem}.dashboard-grid .folder-back-card{grid-column:1 / -1;max-width:300px}.dashboard-list .folder-back-card{align-self:flex-start;max-width:300px}.card-header-row{margin-bottom:1rem;display:flex;justify-content:space-between;align-items:center}.card.compact .card-header-row{margin-bottom:0;flex:0 0 20%;min-width:150px}.card-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-desc{color:var(--text-secondary);font-size:.9rem;margin-bottom:1.5rem;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-clamp:2}.card.compact .card-desc{display:-webkit-box;flex:1;margin-bottom:0;padding:0 1rem;text-align:left;max-width:none;color:var(--text-secondary)}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:1rem;border-top:1px solid var(--border-color);gap:.5rem}.card-actions{display:flex;gap:.5rem;align-items:center}@media(max-width:480px){.card-actions{gap:.25rem}}.card.compact .card-meta{border-top:none;padding-top:0;margin-top:0;width:auto;flex-shrink:0;gap:3rem;margin-left:0;min-width:200px;justify-content:flex-end}@media(max-width:768px){.card.compact{flex-direction:column!important;align-items:stretch!important;gap:.5rem;padding:1rem;height:auto!important}.card.compact.folder-back-card{flex-direction:row!important;align-items:center!important;padding:.5rem .75rem!important}.card.compact .card-header-row{flex:none!important;width:100%;margin-bottom:.5rem}.card.compact .card-desc{width:100%;padding:0;margin-bottom:0;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-clamp:2}.card.compact .card-meta{width:100%;min-width:0;gap:1rem;justify-content:space-between;margin-top:.5rem;border-top:1px solid var(--border-color);padding-top:.75rem;display:flex!important}}.badge{font-size:.75rem;padding:.2rem .5rem;border-radius:1rem;border:1px solid currentColor}.badge-qa{background:#38bdf81a;color:var(--brand-accent)}.badge-language{background:#8b5cf61a;color:var(--brand-secondary)}.badge-terms{background:#6366f11a;color:var(--brand-primary)}.badge-glossary{background:#0d94881a;color:#0d9488}.badge-teacher{background:#10b9811a;color:#34d399}.badge-student{background:#3b82f61a;color:#60a5fa}.badge-folder{background:#eab3081a;color:#eab308}.icon-btn{background:transparent;padding:.5rem;border-radius:50%;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.icon-btn:hover{background:#ffffff1a;color:var(--text-primary)}.icon-btn-delete:hover{background:#ef44441a;color:#ef4444}.icon-btn-edit:hover{background:#38bdf81a;color:var(--brand-accent)}.icon-btn-move:hover{background:#eab3081a;color:#eab308}.dashboard-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;text-align:center;background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color)}.dashboard-empty h3{font-size:1.5rem;margin-bottom:1rem}.dashboard-empty p{color:var(--text-secondary);margin-bottom:2rem;max-width:400px}.dashboard-empty .dashboard-action-btns{justify-content:center}.modal-overlay{position:fixed;inset:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:2000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;width:90%;max-width:450px;box-shadow:0 25px 50px -12px #00000080;animation:modalScale .2s ease-out}@keyframes modalScale{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}.modal-title{font-size:1.5rem;font-weight:700;margin-bottom:1rem;color:var(--text-primary);text-align:center}.modal-body{margin-bottom:2rem;color:var(--text-secondary);line-height:1.6;text-align:center}.modal-text{text-align:center}.modal-actions{display:flex;justify-content:flex-end;gap:1rem;margin-top:2rem}.modal-actions button{min-width:120px;padding:.75rem 1.5rem}.modal-content.auto-mode-modal{max-height:90vh;overflow-y:auto;padding:clamp(1rem,4vw,2rem)}.modal-content.auto-mode-modal .modal-body{max-height:60vh;overflow-y:auto}.modal-actions.modal-actions-auto-mode{flex-wrap:wrap}.modal-actions.modal-actions-auto-mode 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td:last-child{text-align:right}.students-table .btn-edit-student{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:.35rem;border-radius:var(--radius-sm);transition:var(--transition-fast)}.students-table .btn-edit-student:hover{color:var(--brand-primary);background:#6366f11a}.students-table .student-name{font-weight:500;white-space:nowrap}.students-table .student-name.has-nickname{font-weight:600}.students-empty-cell{padding:2rem 1.25rem;text-align:center;color:var(--text-secondary);font-size:.95rem}.btn-remove-from-class{flex:1 1 100%;margin-top:.75rem;padding:.75rem 1rem;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);font-family:inherit;font-size:.9rem;font-weight:500;cursor:pointer;transition:var(--transition-fast)}.btn-remove-from-class:hover{border-color:#ef444480;color:#ef4444;background:#ef44440f}.modal-actions .btn-confirm-remove{background:#ef4444;border:1px solid #ef4444;color:#fff;font-weight:600;border-radius:var(--radius-md)}.modal-actions .btn-confirm-remove:hover{background:#dc2626;border-color:#dc2626}.no-spinner::-webkit-outer-spin-button,.no-spinner::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.no-spinner{-moz-appearance:textfield;appearance:none}@media(max-width:768px){.students-toolbar{flex-direction:column;align-items:stretch;gap:.75rem}.students-toolbar label{flex-direction:row;justify-content:space-between;width:100%}.students-toolbar select{width:auto;flex:1;margin-left:1rem}.students-table-wrap{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}.students-table th,.students-table td{white-space:nowrap;padding:.75rem 1rem}}.profile-header-nav{width:100%;max-width:400px;margin:2rem auto;display:flex;justify-content:center}.profile-view-card{display:flex;flex-direction:row;align-items:center;margin-bottom:2rem;position:relative;width:100%;max-width:400px;min-height:0;height:auto;margin:.5rem auto 1.25rem;padding:3.5rem 2.5rem;gap:2rem}.profile-avatar-container{width:120px;height:120px;border-radius:50%;background:var(--bg-secondary);border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;color:var(--brand-primary);flex-shrink:0;transition:all .3s ease}.profile-details{flex:1;display:flex;flex-direction:column;align-items:flex-start}.profile-username{font-size:2rem;margin-bottom:.25rem;font-weight:800;line-height:1.1}.profile-edit-btn{margin-top:.5rem;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);padding:.6rem 1.25rem;font-size:.95rem;border-radius:var(--radius-md);cursor:pointer;transition:all .2s}.profile-edit-btn:hover{background:var(--bg-hover)}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;max-width:400px;margin:0 auto}.profile-page-container{width:100%;overflow-x:hidden;box-sizing:border-box;padding:1rem}.stat-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:1.5rem}@media(max-width:480px){.profile-page-container{padding:.5rem .5rem 0;display:flex;flex-direction:column;flex:1;justify-content:center;min-height:calc(100vh - 100px)}}.stat-icon{margin-bottom:1rem}.stat-value{font-size:2rem;font-weight:800}.stat-label{color:var(--text-secondary);font-size:.85rem;text-transform:uppercase;letter-spacing:.5px}@media(max-width:480px){.profile-view-card{padding:1.75rem 1.4rem;gap:1.5rem;box-sizing:border-box;width:100%;max-width:100%;overflow-x:hidden}.profile-avatar-container{width:88px;height:88px;border-width:2px}.profile-username{font-size:1.5rem}.profile-edit-btn{padding:.5rem 1rem;font-size:.9rem}.stats-grid{gap:1rem;box-sizing:border-box;width:100%;padding:0 .5rem}.stat-card{padding:.25rem .5rem;aspect-ratio:1 / 1}.stat-icon{margin-bottom:.25rem}.stat-value{font-size:1.4rem}.stat-label{font-size:.75rem}}.profile-edit-card{display:flex;flex-direction:column;margin-bottom:2rem;position:relative;width:100%;max-width:400px;margin:0 auto 2rem;padding:1.5rem 2rem}.edit-card-header{display:flex;flex-direction:row;align-items:center;gap:1.5rem;width:100%;margin-bottom:1rem;border-bottom:1px solid var(--border-color);padding-bottom:1rem}.edit-header-text{flex:1;display:flex;flex-direction:column;align-items:flex-start}.edit-avatar-preview{width:72px;height:72px;border-radius:50%;background:var(--bg-secondary);border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;color:var(--brand-primary);flex-shrink:0}.icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:.5rem;margin-bottom:2rem;justify-items:center;width:100%}.icon-grid-btn{width:40px;height:40px;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s}.icon-grid-btn:hover{transform:scale(1.1)}.icon-grid-btn.active{background:var(--brand-primary);color:#fff}.icon-grid-btn.inactive{background:var(--bg-secondary);color:var(--text-secondary)}@media(max-width:480px){.profile-header-nav{margin-top:0;margin-bottom:.5rem}.profile-edit-card{padding:1rem;width:100%;max-width:400px;margin:1.5rem auto;height:auto;flex:none;box-sizing:border-box}.edit-card-header{gap:.5rem;margin-bottom:.5rem;padding-bottom:.5rem}.edit-avatar-preview{width:48px;height:48px}.edit-header-text h2{font-size:1.1rem!important;margin-bottom:0!important}.edit-header-text p{display:none}.icon-grid{gap:.4rem}.icon-grid-btn{width:38px;height:38px}}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: rgba(30, 41, 59, .7);--text-primary: #f8fafc;--text-secondary: #94a3b8;--brand-primary: #6366f1;--brand-secondary: #8b5cf6;--brand-accent: #38bdf8;--border-color: rgba(148, 163, 184, .1);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--transition-fast: .2s ease;--transition-normal: .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}a{color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent}button{cursor:pointer;font-family:inherit;border:none;border-radius:var(--radius-sm);transition:var(--transition-fast)}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.title{font-size:2.25rem;font-weight:700;background:linear-gradient(135deg,var(--brand-primary),var(--brand-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn-primary{background:linear-gradient(135deg,var(--brand-primary),var(--brand-secondary));color:#fff;padding:.75rem 1.5rem;font-weight:600;border-radius:var(--radius-md)}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;line-height:1.1;-webkit-user-select:none;user-select:none;transition:var(--transition-fast)}.btn:focus-visible{outline:none;box-shadow:0 0 0 3px #38bdf847}.btn-secondary{background:#1e293b8c;border:1px solid rgba(148,163,184,.25);color:var(--text-primary);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.btn-secondary:hover{transform:translateY(-1px);border-color:#38bdf88c;box-shadow:0 10px 24px #00000040}.btn-secondary:active{transform:translateY(0)}.card{background:var(--bg-card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem}.input{width:100%;padding:.75rem 1rem;background:#0f172a80;border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);outline:none;transition:var(--transition-fast)}.input-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.input:focus{border-color:var(--brand-primary);box-shadow:0 0 0 2px #6366f133}@media(max-width:768px){:root{--radius-lg: .75rem}.title{font-size:1.75rem}.container{padding:0 1rem;width:100%}.card .input-group,.input-grid-2{grid-template-columns:1fr!important}}@media(max-width:480px){.title{font-size:1.5rem}.btn-primary{width:100%;justify-content:center;display:flex}}.perspective-1000{perspective:1000px}.transform-style-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden;-webkit-backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}