:root{--ease-out:cubic-bezier(0.23,1,0.32,1);--paper:#f5f0e7;--paper-strong:#fffaf2;--ink:#22323b;--ink-muted:#5f6f78;--mint:#c8ebe2;--sun:#efc88d;--sand:#ead9be;--accent:#0f7a71;--border:rgba(34,50,59,0.12);--shadow:0 24px 60px rgba(34,50,59,0.1);--error:#b14f4f}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{color:var(--ink);background:linear-gradient(180deg,var(--paper-top) 0,var(--paper) 100%);font-family:Trebuchet MS,Gill Sans,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit}h1,h2,h3,h4,p{margin:0}h1,h2,h3,h4{font-family:Georgia,Times New Roman,serif}.button{display:inline-flex;align-items:center;justify-content:center;min-height:2.8rem;padding:.75rem 1.1rem;border-radius:999px;border:0;background:var(--accent);color:white;cursor:pointer}.button--ghost{background:transparent;color:var(--ink);border:1px solid var(--border)}.auth-page{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(20rem,28rem);grid-gap:2rem;gap:2rem;align-items:center;padding:3rem clamp(1.5rem,5vw,5rem)}.auth-page__hero{display:grid;grid-gap:1.25rem;gap:1.25rem}.auth-page__hero h1{font-size:clamp(2.8rem,5vw,5rem);max-width:12ch}.auth-page__copy{max-width:42rem;color:var(--ink-muted);font-size:1.05rem;line-height:1.6}.auth-page__tip{display:inline-flex;flex-direction:column;gap:.35rem;width:-moz-fit-content;width:fit-content;padding:1rem 1.15rem;border-radius:1.25rem;background:rgba(var(--paper-strong-rgb),.86);border:1px solid rgba(15,122,113,.16);box-shadow:var(--shadow)}.auth-card{display:grid;grid-gap:1rem;gap:1rem;padding:2rem;border-radius:1.8rem;background:rgba(var(--paper-strong-rgb),.94);border:1px solid var(--border);box-shadow:var(--shadow)}.field{display:grid;grid-gap:.45rem;gap:.45rem}.field span{color:var(--ink-muted);font-size:.95rem}.field input{min-height:3rem;padding:.8rem 1rem;border-radius:1rem;border:1px solid var(--border);background:var(--paper-strong)}.field-error{color:var(--error)}.shell{min-height:100vh;display:grid;grid-template-columns:17rem minmax(0,1fr)}.shell__nav{display:grid;align-content:space-between;grid-gap:1.5rem;gap:1.5rem;padding:1.8rem 1.1rem;border-right:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.92)}.shell__brand-block{display:grid;grid-gap:.2rem;gap:.2rem;padding:0 .4rem}.shell__brand{font-size:1.8rem}.shell__menu{display:grid;grid-gap:.35rem;gap:.35rem}.card__header p,.detail-list,.muted-copy,.shell__caption,.state-panel__detail{color:var(--ink-muted);line-height:1.5}.shell__link{display:flex;align-items:center;gap:.65rem;min-height:2.55rem;padding:.6rem .8rem;border-radius:.85rem;color:var(--ink-muted);font-size:.93rem;transition:background .12s,color .12s}.shell__link:hover{background:rgba(var(--mint-rgb),.4);color:var(--ink)}.shell__link.active{background:var(--mint);color:var(--ink);font-weight:600}.shell__link-icon{display:flex;align-items:center;flex-shrink:0;opacity:.65}.shell__link.active .shell__link-icon{opacity:1}.shell__profile{display:flex;align-items:center;gap:.65rem;padding:.8rem .9rem;border-radius:1rem;background:rgba(15,122,113,.07)}.shell__profile-info{flex:1 1;min-width:0}.shell__profile-name{font-weight:700;font-size:.88rem}.shell__profile-meta{font-size:.75rem;color:var(--ink-muted)}.shell__avatar{display:flex;align-items:center;justify-content:center;width:2.1rem;height:2.1rem;border-radius:999px;background:var(--accent);color:white;font-weight:700;font-size:.85rem;flex-shrink:0}.shell__main{padding:2rem clamp(1.2rem,4vw,3rem) 3rem}.page-header{display:flex;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}.page-header__content{display:grid;grid-gap:.7rem;gap:.7rem}.page-header__actions{display:flex;align-items:flex-start}.page-header h2{font-size:clamp(2rem,4vw,3rem)}.page-header__description{max-width:56rem;color:var(--ink-muted);line-height:1.6}.dashboard-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:1rem}.inventory-grid,.knowledge-grid,.quick-actions-grid,.tile-grid{grid-template-columns:repeat(auto-fit,minmax(16rem,1fr))}.card,.metric-card,.quick-action,.state-panel,.tile{border:1px solid var(--border);box-shadow:var(--shadow);border-radius:1.4rem;background:rgba(var(--paper-strong-rgb),.88)}.card{display:grid;grid-gap:1rem;gap:1rem;padding:1.35rem;margin-bottom:1rem}.card--mint{background:linear-gradient(180deg,rgba(var(--mint-rgb),.55),rgba(var(--paper-strong-rgb),.96))}.card--sun{background:linear-gradient(180deg,rgba(239,200,141,.38),rgba(var(--paper-strong-rgb),.96))}.card--sand{background:linear-gradient(180deg,rgba(234,217,190,.5),rgba(var(--paper-strong-rgb),.96))}.metric-card{padding:1.2rem}.metric-card__value{margin-top:.3rem;font-size:clamp(2rem,4vw,3rem);font-family:Georgia,Times New Roman,serif}.quick-action,.tile{display:grid;grid-gap:.5rem;gap:.5rem;padding:1rem;min-height:10rem}.tile--dense{min-height:0}.detail-list{display:grid;grid-gap:.55rem;gap:.55rem;padding-left:1.1rem}.state-panel{display:flex;align-items:flex-start;gap:1rem;padding:1.5rem;border-radius:1.25rem}.state-panel__title{font-weight:700}.state-panel--success .state-panel__title{color:var(--accent)}.state-panel--error .state-panel__title{color:var(--error)}.state-panel--loading{align-items:center}.loading-spinner{width:1.4rem;height:1.4rem;border-radius:999px;border:2.5px solid rgba(15,122,113,.2);border-top:2.5px solid var(--accent);animation:spin .8s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(1turn)}}.auth-card__eyebrow,.page-header__eyebrow,.shell__eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;color:var(--ink-muted)}.breadcrumbs{display:flex;flex-wrap:wrap;gap:.5rem;color:var(--ink-muted);font-size:.92rem}.breadcrumbs__item:not(:last-child):after{content:"/";margin-left:.5rem;opacity:.45}.workspace-grid{display:grid;grid-gap:1rem;gap:1rem;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}.workspace-grid--secondary{grid-template-columns:1.3fr 1fr}.form-grid{display:grid;grid-gap:.9rem;gap:.9rem;grid-template-columns:repeat(2,minmax(0,1fr))}.field--full{grid-column:1/-1}.field select,.field textarea{min-height:3rem;padding:.8rem 1rem;border-radius:1rem;border:1px solid var(--border);background:var(--paper-strong)}.field textarea{min-height:7.5rem;resize:vertical}.selection-banner{padding:.9rem 1rem;border-radius:1rem;background:rgba(15,122,113,.08)}.chip-grid{display:flex;flex-wrap:wrap;gap:.7rem}.toggle-chip{display:inline-flex;align-items:center;gap:.55rem;padding:.65rem .85rem;border-radius:999px;background:rgba(var(--paper-strong-rgb),.88);border:1px solid var(--border)}.toggle-chip input{accent-color:var(--accent)}.inventory-grid,.knowledge-grid{display:grid;grid-gap:1rem;gap:1rem}.dash-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:1rem;gap:1rem;margin-bottom:1.5rem}.dash-metric{display:flex;align-items:center;gap:1rem;padding:1.25rem 1.4rem;border-radius:1.4rem;border:1px solid var(--border);box-shadow:var(--shadow);background:rgba(var(--paper-strong-rgb),.9)}.dash-metric--mint{background:linear-gradient(135deg,rgba(var(--mint-rgb),.6) 0,rgba(var(--paper-strong-rgb),.95) 100%)}.dash-metric--sun{background:linear-gradient(135deg,rgba(239,200,141,.45) 0,rgba(var(--paper-strong-rgb),.95) 100%)}.dash-metric--sand{background:linear-gradient(135deg,rgba(234,217,190,.55) 0,rgba(var(--paper-strong-rgb),.95) 100%)}.dash-metric__icon{display:flex;align-items:center;justify-content:center;width:2.8rem;height:2.8rem;border-radius:.9rem;background:rgba(var(--paper-strong-rgb),.7);border:1px solid var(--border);flex-shrink:0;color:var(--accent)}.dash-metric__label{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-muted)}.dash-metric__value{font-size:2.2rem;font-family:Georgia,serif;line-height:1.1;margin:.1rem 0}.dash-metric__helper{font-size:.8rem;color:var(--ink-muted)}.dash-features{margin-bottom:2rem}.dash-section-title{font-size:1.15rem;margin-bottom:.3rem}.dash-section-sub{font-size:.88rem;color:var(--ink-muted);margin-bottom:1rem}.dash-section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:1rem}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:.85rem;gap:.85rem}.feature-card{display:flex;align-items:flex-start;gap:1rem;padding:1.1rem 1.2rem;border-radius:1.25rem;border:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.88);box-shadow:0 4px 20px rgba(var(--ink-rgb),.06);transition:transform .13s,box-shadow .13s;text-decoration:none;color:var(--ink);cursor:pointer}.feature-card:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(var(--ink-rgb),.12)}.feature-card__icon{display:flex;align-items:center;justify-content:center;width:2.6rem;height:2.6rem;border-radius:.85rem;flex-shrink:0}.feature-card__body{flex:1 1;min-width:0}.feature-card__label{font-weight:700;font-size:.9rem;margin-bottom:.25rem}.feature-card__desc{font-size:.8rem;color:var(--ink-muted);line-height:1.45}.feature-card__arrow{display:flex;align-items:center;color:var(--ink-muted);opacity:.5;flex-shrink:0;margin-top:.2rem}.feature-card:hover .feature-card__arrow{opacity:1;color:var(--accent)}.feature-card--mint .feature-card__icon{background:rgba(var(--mint-rgb),.7);color:#0a6b64}.feature-card--sun .feature-card__icon{background:rgba(239,200,141,.6);color:#8a5d0f}.feature-card--indigo .feature-card__icon{background:rgba(180,190,240,.45);color:#3d4caa}.feature-card--sand .feature-card__icon{background:rgba(234,217,190,.7);color:#7a6040}.feature-card--accent .feature-card__icon{background:rgba(15,122,113,.15);color:var(--accent)}.feature-card--neutral .feature-card__icon{background:rgba(var(--ink-rgb),.07);color:var(--ink)}.dash-students{margin-bottom:2rem}.student-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));grid-gap:1rem;gap:1rem}.student-card{display:grid;grid-gap:.85rem;gap:.85rem;padding:1.2rem;border-radius:1.25rem;border:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.9);box-shadow:0 4px 18px rgba(var(--ink-rgb),.07)}.student-card__head{display:flex;align-items:center;gap:.75rem}.student-avatar{display:flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border-radius:999px;background:var(--mint);color:var(--ink);font-weight:700;font-size:.95rem;flex-shrink:0}.student-card__name{font-weight:700;font-size:.9rem;line-height:1.3}.status-pill{display:inline-flex;align-items:center;padding:.2rem .6rem;border-radius:999px;font-size:.72rem;font-weight:600;margin-top:.2rem}.status-pill--ok{background:rgba(var(--mint-rgb),.7);color:#0a6b64}.status-pill--warn{background:rgba(239,200,141,.6);color:#8a5d0f}.status-pill--alert{background:rgba(177,79,79,.12);color:var(--error)}.progress-row{display:flex;justify-content:space-between;align-items:baseline}.progress-label{font-size:.78rem;color:var(--ink-muted)}.progress-pct{font-size:.82rem;font-weight:700;color:var(--accent)}.progress-track{height:6px;border-radius:999px;background:rgba(var(--ink-rgb),.1);overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:var(--accent);transition:width .4s ease;min-width:2px}.student-stats{display:grid;grid-template-columns:1fr 1fr;grid-gap:.5rem .75rem;gap:.5rem .75rem}.student-stats__item{display:grid;grid-gap:.1rem;gap:.1rem}.student-stats__item--full{grid-column:1/-1}.student-stats__item--alert{background:rgba(177,79,79,.07);border-radius:.5rem;padding:.3rem .5rem}.student-stats dt{font-size:.72rem;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.06em}.student-stats dd{font-size:.83rem;font-weight:600;margin:0}.student-stats__item--alert dd{color:var(--error)}.student-guidance{font-size:.78rem;color:var(--ink-muted);line-height:1.45;padding-top:.3rem;border-top:1px solid var(--border)}.dash-concepts{margin-bottom:2rem}.concept-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(16rem,1fr));grid-gap:.85rem;gap:.85rem;margin-top:1rem}.concept-card{display:grid;grid-gap:.6rem;gap:.6rem;padding:1.1rem;border-radius:1.15rem;border:1px solid var(--border);background:linear-gradient(135deg,rgba(234,217,190,.4) 0,rgba(var(--paper-strong-rgb),.95) 100%);box-shadow:0 4px 16px rgba(var(--ink-rgb),.06)}.concept-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:.5rem}.concept-card__title{font-weight:700;font-size:.92rem}.concept-badge{display:inline-flex;padding:.2rem .55rem;border-radius:999px;font-size:.72rem;font-weight:600;background:rgba(239,200,141,.55);color:#8a5d0f;white-space:nowrap;flex-shrink:0}.concept-card__summary{font-size:.8rem;color:var(--ink-muted);line-height:1.45}.concept-stats{display:flex;gap:.85rem;font-size:.78rem;color:var(--ink-muted)}.aula-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(22rem,1fr));grid-gap:1.1rem;gap:1.1rem;margin-bottom:2rem}.aula-card{display:flex;flex-direction:column;border-radius:1.4rem;overflow:hidden;border:1px solid var(--border);box-shadow:0 4px 20px rgba(var(--ink-rgb),.08);background:rgba(var(--paper-strong-rgb),.95);transition:box-shadow .15s}.aula-card:hover{box-shadow:0 8px 32px rgba(var(--ink-rgb),.13)}.aula-card__header{display:flex;justify-content:space-between;align-items:flex-start;padding:1.2rem 1.4rem 1.1rem;background:linear-gradient(135deg,#1a4a45,#0f7a71);color:white}.aula-card__subject{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;opacity:.7;margin-bottom:.2rem}.aula-card__name{font-family:Georgia,serif;font-size:1.25rem;font-weight:700;line-height:1.2}.aula-card__grade{font-size:.8rem;opacity:.75;margin-top:.25rem}.aula-code-badge{display:inline-block;padding:.3rem .65rem;border-radius:.6rem;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);font-size:.78rem;font-weight:700;letter-spacing:.08em;white-space:nowrap;color:white}.aula-card__header--import{background:linear-gradient(135deg,#3d4060,#5a5f8a);gap:.75rem;align-items:center}.aula-card__body{display:flex;flex-direction:column;gap:1rem;padding:1.1rem 1.3rem 1.2rem;flex:1 1}.aula-card__stats{display:flex;gap:1.2rem;flex-wrap:wrap}.aula-stat{display:flex;align-items:center;gap:.4rem}.aula-stat__icon{display:flex;color:var(--ink-muted)}.aula-stat__value{font-weight:700;font-size:.88rem}.aula-stat__value--meet{font-size:.82rem;color:var(--ink-muted);font-weight:500}.aula-stat__label{font-size:.78rem;color:var(--ink-muted)}.aula-card__actions{display:flex;gap:.6rem;flex-wrap:wrap}.aula-card__meet-btn,.aula-card__open{display:inline-flex;align-items:center;gap:.4rem}.aula-card__meet-btn{font-size:.85rem}.create-aula-panel{display:grid;grid-gap:1rem;gap:1rem;padding:1.4rem;border-radius:1.3rem;border:1px solid rgba(15,122,113,.25);background:rgba(var(--mint-rgb),.2);margin-bottom:1.2rem}.create-aula-panel__header{display:flex;align-items:center;justify-content:space-between}.create-aula-panel__header h3{font-size:1.05rem}.meeting-form{display:grid;grid-gap:.9rem;gap:.9rem;padding:1rem;border-radius:1rem;background:rgba(var(--paper-strong-rgb),.98);border:1px solid var(--border);margin-top:.5rem}.meeting-form__title{font-weight:700;font-size:.92rem}.meeting-form__actions{display:flex;gap:.6rem;justify-content:flex-end}.provider-tabs{display:flex;gap:.4rem;flex-wrap:wrap}.provider-btn{display:inline-flex;align-items:center;gap:.45rem;padding:.45rem .8rem;border-radius:.7rem;border:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.88);color:var(--ink-muted);font-size:.82rem;font-weight:500;cursor:pointer;transition:all .12s}.provider-btn:hover{background:rgba(var(--mint-rgb),.35);color:var(--ink)}.provider-btn--active{background:var(--mint);color:var(--ink);border-color:rgba(15,122,113,.3);font-weight:700}.meet-launch-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.6rem 1rem;border-radius:.75rem;background:rgba(52,168,83,.1);border:1px solid rgba(52,168,83,.25);color:#1e6b30;font-size:.82rem;font-weight:600;text-decoration:none;width:-moz-fit-content;width:fit-content;transition:background .12s}.meet-launch-btn:hover{background:rgba(52,168,83,.18)}.meet-launch-btn--zoom{background:rgba(45,140,255,.1);border-color:rgba(45,140,255,.25);color:#1a5ab0}.meet-launch-btn--zoom:hover{background:rgba(45,140,255,.18)}.csv-preview{padding:.75rem .9rem;border-radius:.75rem;background:rgba(var(--ink-rgb),.04);border:1px solid var(--border);font-size:.8rem}.csv-preview__label{color:var(--ink-muted);margin-bottom:.35rem}.csv-preview__label code{font-family:monospace;background:rgba(15,122,113,.1);padding:.1rem .35rem;border-radius:.3rem}.csv-preview__row{color:var(--ink);padding:.15rem 0;border-top:1px solid var(--border)}.teacher-tools-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:.7rem;gap:.7rem}.teacher-tool-card{display:flex;flex-direction:column;align-items:flex-start;gap:.25rem;padding:1rem 1.1rem;border-radius:1.1rem;border:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.9);box-shadow:0 3px 14px rgba(var(--ink-rgb),.07);cursor:pointer;text-decoration:none;color:var(--ink);transition:box-shadow .14s,transform .14s;font:inherit;text-align:left}.teacher-tool-card:hover{box-shadow:0 6px 22px rgba(var(--ink-rgb),.14);transform:translateY(-2px)}.teacher-tool-card__icon{display:flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border-radius:.75rem;background:rgba(var(--mint-rgb),.5);color:var(--accent);margin-bottom:.2rem}.teacher-tool-card__label{font-weight:700;font-size:.88rem}.teacher-tool-card__hint{font-size:.76rem;color:var(--ink-muted);line-height:1.4}.add-student-panel{background:rgba(var(--mint-rgb),.18);border:1px solid rgba(15,122,113,.18);border-radius:1rem;padding:1rem;display:grid;grid-gap:.65rem;gap:.65rem;margin-bottom:.5rem}.add-student-panel__title{display:flex;align-items:center;gap:.4rem;font-weight:700;font-size:.88rem;color:var(--accent)}.add-student-search{position:relative;display:flex;align-items:center}.add-student-search__icon{position:absolute;left:.85rem;color:var(--ink-muted);display:flex;pointer-events:none}.add-student-search__input{width:100%;min-height:2.6rem;padding:.65rem .9rem .65rem 2.4rem;border-radius:.75rem;border:1px solid var(--border);background:var(--paper-strong);font:inherit;font-size:.9rem}.add-student-search__input:focus{outline:2px solid var(--accent);outline-offset:1px}.add-student-search__spinner{position:absolute;right:.85rem;width:1rem;height:1rem;border-radius:999px;border:2px solid rgba(15,122,113,.2);border-top:2px solid var(--accent);animation:spin .7s linear infinite}.search-results-list{list-style:none;margin:0;padding:0;display:grid;grid-gap:.4rem;gap:.4rem}.search-results-list__item{display:flex;align-items:center;gap:.7rem;padding:.65rem .75rem;border-radius:.7rem;border:1px solid var(--border);background:rgba(var(--paper-strong-rgb),.95)}.search-results-list__avatar{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:999px;background:var(--mint);color:var(--ink);font-weight:700;font-size:.82rem;flex-shrink:0}.search-results-list__info{display:flex;flex-direction:column;gap:.1rem;min-width:0;flex:1 1}.search-results-list__info strong{font-size:.88rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-results-list__info small{font-size:.76rem;color:var(--ink-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}:root{--color-error:#b14f4f;--surface-raised:rgba(var(--paper-strong-rgb),0.98)}@media (max-width:980px){.shell{grid-template-columns:1fr}.shell__nav{border-right:0;border-bottom:1px solid var(--border)}.page-header{flex-direction:column}.dash-metrics{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr 1fr}.dashboard-grid{grid-template-columns:1fr}.teacher-tools-row{grid-template-columns:repeat(2,1fr)}}@media (max-width:620px){.feature-grid{grid-template-columns:1fr}.teacher-tools-row{grid-template-columns:1fr 1fr}}@media (max-width:980px){.form-grid,.workspace-grid,.workspace-grid--secondary{grid-template-columns:1fr}}