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label{font-size:11px;color:#8f789c}.auth-card input{min-height:47px;font-size:12px;background:#fdfbff;border-color:#eae2f0}.auth-card .stack{gap:18px}.form-sublink{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:#b3a2bf}.form-sublink .text-btn{font-size:10px}.auth-card .fine{text-align:center;font-size:10px;margin:0}.auth-card .fine .text-btn{font-size:10px}.auth-bottom{display:flex;justify-content:center;align-items:center;gap:7px;font-size:10px;color:#b3a0be;margin:0}.divider{display:flex;align-items:center;gap:12px;font-size:10px;color:#b9a8c4;margin:25px 0 18px}.divider:before,.divider:after{content:'';height:1px;background:var(--border);flex:1}.auth-card>.fine{margin-top:12px}.auth-back{margin-top:22px}.auth-story .brand img{width:38px;height:38px}
@media(min-width:1600px){#main{padding-top:38px}.welcome-banner{min-height:230px;padding:30px 38px}.banner-art{right:85px;transform:scale(1.1);top:14px}.subject-grid.compact{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1200px){.sidebar{width:205px;padding-left:13px;padding-right:13px}.main-shell{margin-left:205px;width:calc(100% - 205px)}#main{padding:27px 25px}.topbar{padding:0 25px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 225px;gap:18px}.stat{padding:16px 12px;gap:10px}.stat-icon{width:35px;height:35px}.stat div>span{font-size:9px}.heading-actions{gap:8px}.heading-actions .btn{font-size:10px;padding:10px 12px}.semester-select{max-width:155px;font-size:10px}.task-row{padding:17px 15px;gap:9px}.task-meta{font-size:8px}.subject-tag{font-size:8px}.badge{font-size:8px;padding:4px 7px}.late-label{display:none}.banner-art{right:0;opacity:.85}.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-story{padding:35px}.story-orbit{transform:scale(.9);transform-origin:left center}}
@media(max-width:1000px){.dashboard-grid{grid-template-columns:1fr}.dashboard-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}.focus-card{margin-top:0}.gentle-note{display:none}.page-heading{align-items:flex-start}.heading-actions{flex-direction:column;align-items:stretch}.stats-grid{gap:10px}.stat{display:block}.stat-icon{margin-bottom:10px}.stat div>span{font-size:9px}.banner-art{right:0;transform:scale(.85);transform-origin:right center}.welcome-banner p{max-width:250px}.auth-layout{grid-template-columns:42% 58%}.auth-story{padding:30px}.story-copy h1{font-size:43px}.story-orbit{transform:scale(.7);height:220px}.auth-panel{padding:30px}.settings-grid{grid-template-columns:1fr}.grade-grid{grid-template-columns:1fr}.calendar-legend{gap:10px}.calendar-toolbar{padding:15px}.month-nav{gap:7px}.month-nav h2{font-size:14px}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:232px;box-shadow:20px 0 50px #36204b18}.sidebar.open{transform:translateX(0)}.main-shell{margin:0;width:100%}.topbar{height:64px;padding:0 20px}.mobile-menu{display:inline-flex}.breadcrumb{gap:8px}.breadcrumb>span,.breadcrumb>svg{display:none}.top-actions{gap:13px}.search-trigger>span,.search-trigger>kbd{display:none}#main{padding:24px 20px}.page-heading h1{font-size:27px}.page-heading .eyebrow{font-size:8px}.page-heading p{font-size:11px}.heading-actions{gap:7px}.heading-actions .btn{min-height:35px;font-size:9px;padding:8px 10px}.semester-select{min-height:35px;padding:7px 9px;max-width:135px;font-size:9px}.welcome-banner{padding:23px;min-height:210px}.welcome-banner h2{font-size:24px}.banner-art{right:-5px;transform:scale(.75);opacity:.6}.welcome-banner p{max-width:220px;font-size:10px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:11px}.stat{display:flex;padding:16px;gap:13px}.stat-icon{margin:0;width:38px;height:38px}.stat strong{font-size:23px}.dashboard-grid{gap:19px}.subject-card{padding:17px}.section-head{padding:20px 17px 15px}.task-row{padding:17px;gap:10px}.task-title{font-size:11px}.task-meta{gap:6px}.task-meta .subject-tag{max-width:110px}.section-toolbar{flex-wrap:wrap}.tabs button{font-size:10px;padding:8px 11px}.resource-toolbar .tabs{width:100%}.resource-toolbar .search-input{flex:1;min-width:130px}.resource-toolbar select{width:145px}.resource-card{padding:16px}.resource-card h3{font-size:13px}.calendar-scroll{overflow-x:auto}.calendar-grid{min-width:650px}.calendar-toolbar{flex-wrap:wrap}.calendar-legend{flex-wrap:wrap;font-size:8px}.calendar-legend>a{width:100%;margin:0;font-size:10px}.plans-grid{gap:20px;grid-template-columns:1fr;max-width:420px}.plans-intro h2{font-size:29px}.plan-trust{line-height:1.7;text-align:center;align-items:flex-start}.settings-panel{padding:22px}.app-footer{padding:10px 20px 25px}.demo-bar{font-size:8px;padding:8px 16px;gap:7px;flex-wrap:wrap}.demo-bar button{font-size:8px}.auth-layout{grid-template-columns:1fr}.auth-story{padding:22px 25px;min-height:auto}.auth-story .brand{font-size:26px}.auth-story .brand img{width:31px;height:31px}.story-copy,.story-footer{display:none}.auth-panel{padding:25px;min-height:calc(100vh - 76px)}.auth-card{padding:40px 0;max-width:360px}.auth-top{font-size:10px}.auth-card h2{font-size:27px}.auth-bottom{font-size:9px}.payment-row{flex-wrap:wrap;font-size:10px}.payment-row>span:nth-child(2){display:none}dialog{padding:22px}.modal-header h2{font-size:21px}.modal-footer .btn{padding:10px 12px;font-size:10px}}
@media(max-width:420px){#main{padding:22px 15px}.topbar{padding:0 15px}.page-heading h1{font-size:24px}.page-heading{gap:10px}.page-heading p{max-width:190px;line-height:1.6}.banner-art{right:-65px;opacity:.38}.welcome-banner h2{font-size:24px}.welcome-banner{padding:21px}.welcome-banner p{max-width:190px}.subject-grid.compact,.subject-grid,.resource-grid{grid-template-columns:1fr}.subject-card-top{margin-bottom:10px}.subject-card p{margin-bottom:17px}.dashboard-side{grid-template-columns:1fr}.mini-calendar{display:none}.focus-card{padding:21px}.focus-card h3{margin-top:15px}.focus-time{font-size:40px}.stats-grid{gap:8px}.stat{padding:14px 11px;gap:9px}.stat div>span{font-size:8px}.stat-icon{width:33px;height:33px}.task-row{padding:15px 13px;gap:8px}.task-row>.badge{display:none}.task-meta .subject-tag{max-width:125px}.form-grid{grid-template-columns:1fr}.modal-footer{gap:8px}.modal-footer .text-btn{font-size:10px}.auth-top .text-btn{font-size:10px}.verification{flex-wrap:wrap}.resource-toolbar select{width:130px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.user-card .icon-btn{width:auto;min-width:20px;gap:5px}.user-card .icon-btn:after{content:'Cerrar sesión';font-size:9px;color:#a99bb5;white-space:nowrap}.user-card .icon-btn:hover:after{color:var(--primary)}
.top-actions .avatar.small{cursor:pointer}.top-actions .avatar.small:focus-visible{outline:2px solid var(--primary);outline-offset:3px}#profile-menu{position:fixed;z-index:1300;display:grid;gap:8px;min-width:210px;padding:16px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 35px #30204425;color:var(--ink)}#profile-menu strong{font-size:13px}#profile-menu span{font-size:10px;color:var(--muted);padding-bottom:8px;border-bottom:1px solid var(--border);overflow:hidden;text-overflow:ellipsis}#profile-menu a,#profile-menu button{border:0;background:transparent;text-align:left;padding:7px 2px;color:#8068a8;font-size:11px}#profile-menu a:hover,#profile-menu button:hover{color:var(--primary-dark);background:#faf7ff}#profile-menu button{cursor:pointer}
.theme-contrast{--primary:#6b55cf;--primary-dark:#5640b5;--ink:#242238;--muted:#777487;--border:#ddd9e9}
.community-footer{padding:24px 32px;border-top:1px solid var(--border,#e8e1f1);margin-top:24px}.community-footer nav,.social-buttons{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.community-footer nav{margin-bottom:18px}.community-footer .text-btn{font-size:12px}.social-buttons .btn{white-space:normal;text-align:center}.social-buttons button:disabled{opacity:.65;cursor:default}.auth-panel .community-footer{padding:20px 0;width:100%}.help-center{padding:0 4px 20px}.help-center h3{margin:26px 0 16px}.tutorial-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.tutorial-card{padding:20px;border:1px solid var(--border,#e8e1f1);border-radius:16px}.tutorial-card h4{margin:14px 0 8px}.tutorial-card p{font-size:13px;line-height:1.6}.faq-list details{border-bottom:1px solid var(--border,#e8e1f1);padding:16px 4px}.faq-list summary{cursor:pointer;font-weight:600;line-height:1.5}.faq-list p{line-height:1.7;margin:12px 0 0}.faq-list summary:focus-visible{outline:2px solid var(--primary,#7560dc);outline-offset:5px}@media(max-width:650px){.tutorial-grid{grid-template-columns:1fr}.community-footer{padding:20px 16px}.community-footer nav{flex-direction:column;align-items:center}.social-buttons{gap:8px}}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:inherit}.avatar-editor{padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--border,#e8e1f1)}.avatar-editor h3{margin:0}.avatar.profile-avatar{width:80px;height:80px;font-size:38px}.avatar-editor fieldset{border:0;padding:0;margin:0;min-width:0}.avatar-editor legend{font-size:13px;margin-bottom:10px}.avatar-options{display:flex;flex-wrap:wrap;gap:8px}.avatar-choice{width:44px;height:44px;border:2px solid transparent;border-radius:12px;background:#f4f0fa;font-size:25px;cursor:pointer}.avatar-choice[aria-pressed="true"]{border-color:var(--primary,#7560dc);background:#e9e1fa}.avatar-choice:focus-visible{outline:2px solid var(--primary,#7560dc);outline-offset:3px}.avatar-editor input[type="file"]{max-width:100%;font-size:12px}.avatar-editor input[type="file"]::file-selector-button{border:0;border-radius:8px;padding:8px;background:#eee8fa;color:#514262;cursor:pointer}
.social-layout{display:grid;grid-template-columns:minmax(270px,340px) minmax(0,1fr);gap:24px;align-items:start}.social-contacts{padding:24px;min-width:0}.social-contacts h2{margin-top:0}.social-contacts h3{font-size:14px;margin:26px 0 12px}.social-contacts .muted{font-size:13px;line-height:1.6}.friend-code{display:flex;gap:8px;margin:6px 0 22px}.friend-code input{width:100%;min-width:0;font-family:monospace;font-size:11px;padding:8px;border:1px solid #ddd3eb;border-radius:8px}.friend-item{display:flex;align-items:center;gap:10px;width:100%;padding:12px 8px;border:0;border-radius:12px;text-align:left;background:transparent;color:inherit;font:inherit;cursor:pointer}.friend-item>span:nth-child(2){flex:1;overflow-wrap:anywhere}.friend-item.selected,.friend-item:hover{background:#eee8fa}.friend-item:focus-visible{outline:2px solid #7560dc}.friend-request{display:flex;flex-wrap:wrap;gap:10px;padding:14px 0;border-bottom:1px solid #eee8fa;align-items:center;overflow-wrap:anywhere}.friend-request>div{display:flex;flex-wrap:wrap;gap:12px}.social-chat{min-width:0;overflow:hidden}.chat-header{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid #eee8fa;flex-wrap:wrap}.chat-header h2{font-size:18px;margin:0;overflow-wrap:anywhere}.chat-header .fine{margin:5px 0}.chat-header>div:last-child{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap}.chat-history-tools{padding:10px 20px;text-align:center}.chat-messages{height:420px;overflow-y:auto;padding:12px 24px;display:flex;flex-direction:column;gap:12px;overflow-anchor:none}.chat-bubble{max-width:85%;align-self:flex-start;background:#f0ebf8;padding:12px 16px;border-radius:16px 16px 16px 3px;flex-shrink:0}.chat-bubble.mine{align-self:flex-end;background:#e8e2ff;border-radius:16px 16px 3px 16px}.chat-bubble p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6}.chat-bubble time{display:block;margin-top:6px;font-size:10px;color:#675879}.chat-compose{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:20px;border-top:1px solid #eee8fa}.chat-compose textarea{width:100%;min-width:0;resize:vertical;padding:12px;border:1px solid #ddd3eb;border-radius:12px;font:inherit}.chat-compose .fine{grid-column:1/-1;margin:0}.chat-empty{padding:50px 24px;text-align:center;line-height:1.7}.social-chat #chat-status{padding:0 20px;min-height:18px}.social-layout .avatar{flex-shrink:0}@media(max-width:900px){.social-layout{grid-template-columns:1fr}.chat-messages{height:360px}.social-contacts{padding:20px}.chat-bubble{max-width:92%}}@media(max-width:420px){.chat-compose{grid-template-columns:1fr}.chat-compose button{width:100%}}
.social-layout [hidden]{display:none!important}
.chat-file-label{display:flex;align-items:center;gap:10px;grid-column:1/-1;color:var(--primary);font-size:12px;font-weight:600;cursor:pointer}.chat-file-label input{min-height:auto;padding:7px;background:#faf9fd;font-size:11px}.chat-attachment{display:flex;flex-direction:column;gap:5px;min-width:190px;max-width:100%;overflow-wrap:anywhere}.chat-attachment:hover strong{text-decoration:underline}.chat-attachment span{font-size:10px;color:#675879}
.ai-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:22px}.ai-sidebar{padding:18px;display:flex;flex-direction:column;gap:10px}.ai-sidebar h3{font-size:13px;margin:14px 0 2px}.ai-thread{width:100%;padding:10px;text-align:left;border-radius:9px;color:#777084;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ai-thread:hover,.ai-thread.active{background:var(--lavender);color:var(--primary)}.ai-quota{margin-top:auto;padding-top:18px;border-top:1px solid var(--border);display:grid;gap:7px}.ai-quota strong{font-size:16px}.ai-quota span,.ai-quota small{color:var(--muted);font-size:11px}.ai-quota a{color:var(--primary);font-size:11px}.ai-workspace{overflow:hidden}.ai-notice{padding:13px 20px;background:#f7f4ff;color:#66568b;font-size:11px;border-bottom:1px solid var(--border)}.ai-messages{height:440px;overflow:auto;padding:24px;display:flex;flex-direction:column;gap:15px}.ai-message{max-width:86%;padding:14px 16px;border-radius:14px;background:#f2eff8}.ai-message.user{align-self:flex-end;background:#e8e2ff}.ai-message strong{font-size:11px;color:#6f5db1}.ai-message p{white-space:pre-wrap;overflow-wrap:anywhere;margin:7px 0;line-height:1.65}.ai-message time{font-size:9px;color:var(--muted)}.ai-compose{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:18px;border-top:1px solid var(--border)}.ai-compose textarea{resize:vertical}.ai-compose .form-error,.ai-compose .fine{grid-column:1/-1;margin:0}@media(max-width:900px){.ai-layout{grid-template-columns:1fr}.ai-sidebar{max-height:280px}.ai-messages{height:380px}}@media(max-width:520px){.ai-compose{grid-template-columns:1fr}.ai-compose .btn{width:100%}}
/* Identidad educativa: índigo, turquesa y acentos cálidos. */
body.theme-contrast{--primary:#6345e8;--primary-dark:#482bc3;--ink:#202747;--muted:#626b82;--border:#dfe4f0;--lavender:#eeeaff;--bg:#f5f7ff;background:var(--bg)}
.sidebar{border-right-color:#e1e5f1;box-shadow:4px 0 24px #29386b05;overflow-y:auto}
.nav-link{color:#59617b}.nav-link.active{background:#eae5ff;color:#482bc3;box-shadow:inset 3px 0 #6345e8}.nav-link:hover{background:#f0edff}.help-nav{width:100%;text-align:left;font:inherit;font-size:12px}
.sidebar-bottom{padding-top:24px}.workspace-label{color:#68738a}.breadcrumb,.breadcrumb strong{color:#59617b}
.btn.primary{background:linear-gradient(120deg,#6345e8,#4934be);box-shadow:0 5px 14px #6345e82b}.btn.primary:hover:not(:disabled){background:#482bc3}.btn.secondary{color:#4d427f;border-color:#d9d3ee}
.welcome-banner{background:linear-gradient(115deg,#242d72 0%,#5934c6 58%,#7351eb 100%);border:0;box-shadow:0 12px 28px #5034b322;color:white}
.welcome-banner h2,.welcome-banner p,.welcome-banner .banner-link{color:white}.welcome-banner .pill.light{background:#ffffff1f;color:#fff;border-color:#ffffff38}.art-planet{background:linear-gradient(145deg,#71e4d0,#29b8b8);color:#163963}.art-card{background:#ffffffef;color:#5534bd}.art-dot{background:#ffce68}
.stat-icon.violet{background:#e9e2ff;color:#5a36ce}.stat-icon.amber{background:#fff0d1;color:#895300}.stat-icon.pink{background:#ffe2ee;color:#ae235e}.stat-icon.mint{background:#d5f6ed;color:#116957}
.stat{border-top:3px solid #ded4ff}.stat:nth-child(2){border-top-color:#f3be4c}.stat:nth-child(3){border-top-color:#ed82b2}.stat:nth-child(4){border-top-color:#45bea7}.stat div>span{color:#626b82}
.pro-card{background:linear-gradient(130deg,#ede6ff,#e4f4ff);border-color:#d8d1f2}.pro-card p,.pro-card .btn{color:#544579}.pro-spark{color:#6946cf}
.focus-card{background:linear-gradient(140deg,#d9f7ee,#e4f5ff);border:1px solid #bbe5de}.focus-card h3,.focus-time{color:#145b58}.focus-card p,.focus-top{color:#386a69}
.avatar{background:#e6ddff;color:#5034b0;border-color:#f3efff}.user-card strong{color:#343454}.user-card div>span{color:#69718a}
.auth-story{background:linear-gradient(150deg,#202a65 0%,#4930a4 55%,#724ee1 100%);color:#fff}.auth-story .brand,.auth-story .brand-dot,.auth-story h1{color:#fff}.auth-story h1 span{color:#85efda}.auth-story .eyebrow,.auth-story .story-footer,.auth-story .story-copy>p{color:#e0ddff}.auth-story .orbit-core{background:linear-gradient(140deg,#79e8d1,#37baba);color:#1d4265}.auth-story .orbit-note{color:#49357d;background:#fff}.auth-story .orbit-ring{border-color:#ffffff30}.auth-story .orbit-dot{background:#ffcf70}
.community-footer{background:#eef1fc;border-top-color:#dfe4f2}.community-footer .text-btn{color:#5137b1}.auth-panel .community-footer{background:transparent}
.help-hero{padding:28px;border-radius:18px;background:linear-gradient(125deg,#283479,#6345d6);color:#fff;margin:8px 0 24px}.help-hero .eyebrow{color:#b7f5e7}.help-hero h3{font-size:25px;line-height:1.25;letter-spacing:-.5px;margin:14px 0 10px;color:#fff}.help-hero p{color:#e9e6ff;font-size:13px;margin-bottom:18px}.help-stats{display:flex;flex-wrap:wrap;gap:10px}.help-stats span{border:1px solid #ffffff45;border-radius:20px;padding:5px 12px;font-size:11px;color:#fff}
.help-filters{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:14px;margin-bottom:18px}.help-center .tutorial-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.help-center .tutorial-card{padding:0;overflow:hidden;border-color:#dfe4f0;background:#fff}.tutorial-cover{min-height:94px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px;background:#eee8ff;color:#5730b8}.tutorial-card:nth-child(4n+2) .tutorial-cover{background:#d7f5ec;color:#176657}.tutorial-card:nth-child(4n+3) .tutorial-cover{background:#fff0cf;color:#835000}.tutorial-card:nth-child(4n+4) .tutorial-cover{background:#e1eaff;color:#2e539b}.tutorial-category{font-size:11px;font-weight:650}.tutorial-body{padding:20px}.tutorial-body h4{margin-top:0;font-size:16px}.tutorial-steps{margin-top:18px;border-top:1px solid #e9e6f2;padding-top:14px}.tutorial-steps summary{font-size:12px;color:#5035ad;font-weight:650;cursor:pointer}.tutorial-steps ol{padding-left:20px;margin-bottom:0}.tutorial-steps li{font-size:13px;line-height:1.7;margin:10px 0}.faq-list details[open]{background:#f3f0ff;border-radius:10px;padding:16px}.faq-list summary{color:#333957}.faq-list p{color:#505a74}.friend-item.selected{background:#e7e0ff}.chat-bubble.mine{background:#e6ddff;color:#30225e}
@media(max-width:650px){.help-filters,.help-center .tutorial-grid{grid-template-columns:1fr}.help-hero{padding:22px}.help-hero h3{font-size:22px}.help-nav{font-size:12px}}

/* Tarjetas y respuestas más claras para el centro de ayuda ampliado. */
.help-center .tutorial-card{box-shadow:0 10px 26px #29386b10;transition:transform .18s ease,box-shadow .18s ease}
.help-center .tutorial-card:hover{transform:translateY(-3px);box-shadow:0 16px 32px #29386b1a}
.help-center .tutorial-cover{min-height:108px}
.help-center .tutorial-body{display:flex;flex-direction:column;align-items:flex-start;min-height:210px}
.help-center .tutorial-body .tutorial-steps{width:100%;margin-top:auto}
.tutorial-video{width:100%;margin:12px 0 16px}.tutorial-video summary{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 14px;border-radius:10px;background:linear-gradient(120deg,#6345e8,#4934be);color:#fff;font-size:12px;font-weight:700;cursor:pointer;list-style:none;touch-action:manipulation}.tutorial-video summary::-webkit-details-marker{display:none}.tutorial-video summary:focus-visible{outline:3px solid #8e75ef;outline-offset:3px}.tutorial-video video{display:block;width:100%;height:auto;aspect-ratio:16/9;margin-top:10px;border-radius:12px;background:#111;object-fit:contain}.tutorial-video[open] summary{background:#4934be}
.help-center .faq-list{display:grid;gap:10px}
.help-center .faq-list details{border:1px solid #dfe4f0;border-radius:12px;background:#fff;padding:15px 18px;box-shadow:0 4px 14px #29386b08}
.help-center .faq-list details[open]{padding:15px 18px;border-color:#bfb0f3;background:#f3f0ff}
.help-center .faq-list summary{font-weight:650;cursor:pointer;line-height:1.5}
.help-center .faq-list p{margin:12px 0 0}
@media(prefers-reduced-motion:reduce){.help-center .tutorial-card{transition:none}.help-center .tutorial-card:hover{transform:none}}
.language-switcher{position:fixed;right:18px;bottom:18px;z-index:110;width:auto;min-width:116px;min-height:38px;padding:7px 10px;border:1px solid #cabff0;border-radius:12px;background:#fff;color:#482bc3;font-size:12px;font-weight:650;box-shadow:0 8px 24px #29386b24}
.language-switcher:focus-visible{outline:3px solid #8e75ef;outline-offset:2px}
@media(max-width:650px){.language-switcher{right:12px;bottom:12px}}

/* Diseño móvil: lectura y controles táctiles sin desbordes accidentales. */
.app-shell,.main-shell,#main,.panel,.settings-grid,.social-layout,.social-chat{min-width:0}
.panel h2,.panel h3,.tutorial-body h4,.faq-list summary,.page-heading h1{overflow-wrap:anywhere}
.calendar-scroll{overscroll-behavior-inline:contain;-webkit-overflow-scrolling:touch}
.mini-calendar h3,.month-nav h2{text-transform:none}
.mini-calendar h3::first-letter,.month-nav h2::first-letter{text-transform:uppercase}
.sidebar-close,.sidebar-backdrop{display:none}
.sidebar-backdrop[hidden]{display:none!important}
@media(max-width:760px){
  .sidebar-close{display:inline-flex;position:absolute;top:22px;right:12px}
  .sidebar-backdrop:not([hidden]){display:block;position:fixed;inset:0;z-index:29;border:0;padding:0;background:#1f234b77}
  body{overflow-x:clip}
  #main{padding:24px clamp(16px,4vw,24px) 80px}
  .topbar{padding-inline:clamp(16px,4vw,24px)}
  .page-heading p{font-size:12px;line-height:1.5}
  .heading-actions .btn,.semester-select,.tabs button,.icon-btn,.calendar-toolbar button{min-height:44px}
  .btn.mini,.social-buttons .btn,.friend-request button,.chat-header button,.calendar-grid button,.search-trigger{min-height:44px}
  .icon-btn{min-width:44px;width:44px}
  .heading-actions .btn{font-size:12px;padding:10px 14px}
  .tutorial-video{margin-inline:0}.tutorial-video video{border-radius:9px}.help-center .tutorial-card:hover{transform:none}
  .semester-select{font-size:12px;padding:9px 12px;max-width:190px}
  .tabs button{font-size:12px;padding:10px 14px}
  .task-title,.task-meta,.subject-tag,.badge,.calendar-legend,.resource-card .muted{font-size:12px}
  .stat div>span,.workspace-label,.page-heading .eyebrow{font-size:11px}
  .community-footer{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .language-switcher{bottom:calc(12px + env(safe-area-inset-bottom));right:calc(12px + env(safe-area-inset-right));min-height:44px;font-size:13px}
  .calendar-scroll{scrollbar-width:thin}
  dialog,dialog.wide{width:calc(100vw - 24px);max-width:620px;max-height:calc(100dvh - 24px);overflow-y:auto;padding:22px}
  .modal-footer{flex-wrap:wrap}
  .modal-footer>div{flex-wrap:wrap;justify-content:flex-end;margin-left:auto}
  .modal-footer .btn{min-height:44px;font-size:12px}
  .auth-panel{min-height:calc(100dvh - 76px)}
}
@media(max-width:480px){
  .page-heading{flex-direction:column;align-items:stretch;gap:14px}
  .page-heading p{max-width:none}
  .heading-actions{flex-direction:row;align-items:stretch;gap:10px}
  .heading-actions .btn{flex:1;min-width:0}
  .heading-actions .btn span{overflow-wrap:anywhere}
  .semester-select{flex:1;min-width:0;max-width:none}
  .dashboard-side{grid-template-columns:1fr}
  .stats-grid{gap:10px}
  .stat{padding:14px;gap:10px}
  .stat strong{font-size:22px}
  .stat div>span{font-size:11px}
  .resource-toolbar .search-input{min-width:100%;flex-basis:100%}
  .resource-toolbar select{width:auto;flex:1;min-width:0}
  .social-contacts{padding:18px}
  .chat-header,.chat-compose{padding:16px}
  .chat-messages{padding:12px 16px;height:min(48dvh,400px)}
  .help-center .tutorial-body{min-height:0}
  .help-center .tutorial-body .tutorial-steps{margin-top:18px}
}
@media(max-width:340px){
  .stats-grid,.subject-grid,.resource-grid{grid-template-columns:1fr}
  .heading-actions{flex-direction:column}
  .welcome-banner{padding:18px}
  .banner-art{display:none}
  .modal-footer>div{width:100%}
  .modal-footer>div .btn{flex:1}
}

/* Identidad de marca: el eslogan permanece visible en acceso, escritorio y móvil. */
.brand-copy{display:grid;gap:3px;min-width:0}
.brand-name{line-height:1}
.brand-slogan{font-size:8px;line-height:1.25;letter-spacing:.15px;font-weight:550;color:#8d869b;white-space:nowrap}
.auth-story .brand-slogan{color:#e0ddff}
.password-field{display:block;position:relative}
.password-field>input{padding-right:48px}
.password-toggle{position:absolute;right:3px;top:10px;width:40px;height:40px;display:grid;place-items:center;border-radius:8px;color:#8f879d;background:transparent}
.password-toggle:hover{background:#f1edfa;color:var(--primary)}
.password-toggle:focus-visible{outline:3px solid #b8a8f7;outline-offset:1px}