/* Shared glass header. rgba is intentional: older Chromium/Yandex lacks color-mix. */
.ac-header{--ac-ink:#272b39;--ac-accent:#745688;--ac-line:rgba(105,81,125,.17);color:var(--ac-ink);position:sticky;top:0;z-index:240;width:100%;padding:0;margin:0;border:0;border-bottom:1px solid var(--ac-line);background:rgba(250,248,245,.70);background-image:linear-gradient(110deg,rgba(255,255,255,.22),rgba(230,219,239,.14));-webkit-backdrop-filter:blur(20px) saturate(145%);backdrop-filter:blur(20px) saturate(145%);box-shadow:0 1px 0 rgba(255,255,255,.45) inset;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;line-height:1.4;isolation:isolate}
.ac-header *{box-sizing:border-box}.ac-header [hidden]{display:none!important}.ac-header-inner{min-height:84px;max-width:1180px;padding:14px 24px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:22px}.ac-brand{color:#272b39!important;display:inline-flex;gap:12px;align-items:center;white-space:nowrap;letter-spacing:-1.2px;font-size:26px;font-weight:730;text-decoration:none!important}.ac-brand-light{font-weight:340}.ac-symbol{width:40px;height:43px;border-radius:12px;background:#272b39;color:#fff;display:inline-flex;align-items:center;justify-content:center;position:relative;font-family:Georgia,serif;font-weight:600;font-size:36px;line-height:1}.ac-symbol small{position:absolute;right:4px;top:3px;font-size:17px;color:#d6c1ed}.ac-header .ac-primary-nav{display:flex;align-items:center;gap:23px;font-size:13px}.ac-header a{text-decoration:none;color:inherit}.ac-header a:hover{color:var(--ac-accent)}.ac-header-actions{display:flex;align-items:center;gap:16px;flex:none}.ac-header button{font:inherit;cursor:pointer;touch-action:manipulation}.ac-header :focus-visible{outline:3px solid #876ca1;outline-offset:3px}.ac-header .ac-primary-action{display:inline-flex;align-items:center;gap:14px;border-radius:13px;background:#745688;color:white;padding:11px 18px;min-height:42px;font-size:13px;font-weight:600}.ac-login{font-size:13px;font-weight:550}.ac-user{position:relative}.ac-user-toggle{display:flex;align-items:center;gap:8px;padding:0;border:0;background:transparent;color:#272b39;min-height:44px}.ac-user-name{font-size:13px;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ac-avatar{width:35px;height:35px;display:grid;place-items:center;border-radius:50%;background:#e7dfef;color:#51366d;font-size:14px;font-weight:600}.ac-role-menu{position:absolute;right:0;top:calc(100% + 13px);background:rgba(255,255,255,.98);border:1px solid #e4ddea;border-radius:16px;box-shadow:0 18px 55px #25133122;width:260px;padding:10px;max-height:calc(100vh - 105px);max-height:calc(100dvh - 105px);overflow:auto;z-index:320}.ac-role-title{padding:12px;font-weight:650;font-size:14px}.ac-role-title small{display:block;color:#6a6274;font-weight:400;font-size:12px;margin-top:4px}.ac-role-menu>a,.ac-role-menu>button{display:block;padding:12px;border:0;background:transparent;border-radius:9px;min-height:42px;width:100%;text-align:left;font-size:13px;color:#272b39}.ac-role-menu>a:hover,.ac-role-menu>button:hover{background:#eee7f5}.ac-header .ac-intake{border:1px solid #ddd5e5;border-radius:20px;background:rgba(255,255,255,.55);color:#3f4a44;font-size:11px;min-height:34px;padding:7px 10px;display:flex;align-items:center;gap:6px}.ac-intake i{width:7px;height:7px;background:#287650;border-radius:50%;flex:none}.ac-intake[data-enabled=false] i{background:#aa4450}.ac-intake[data-enabled=false]{color:#842f40!important}.ac-request-badge{font-size:12px;white-space:nowrap}.ac-request-badge b{font-size:11px;border-radius:20px;background:#e9e1f2;color:#59426e;padding:3px 6px}.ac-header .ac-menu-toggle{display:none;min-width:40px;min-height:42px;border:0;padding:8px;background:none;color:#272b39}.ac-menu-toggle svg{width:22px;height:22px}.ac-dialog{border:1px solid #e2dbe9;border-radius:18px;padding:24px;max-width:430px;width:calc(100% - 32px);color:#272b39;background:#fff}.ac-dialog h2{font:650 21px/1.3 -apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif}.ac-dialog p{font-size:14px;line-height:1.65;margin:18px 0;color:#635b6e}.ac-dialog .ac-dialog-actions{display:flex;gap:10px;justify-content:flex-end}.ac-dialog button{padding:10px 16px;min-height:44px;border-radius:10px;border:1px solid #d9d1e1;background:#fff;cursor:pointer;color:#3d3248}.ac-dialog button[data-ac-confirm]{color:white;background:#745688;border-color:#745688}.ac-dialog::backdrop{background:rgba(31,24,42,.38)}
.footer-socials .ac-social-link{display:inline-flex;align-items:center;gap:9px;padding:6px 3px;font-size:12px}.ac-social-link .ac-social-icon{width:37px;height:37px;display:grid;place-items:center;border:1px solid var(--line,#ddd5e5);background:rgba(255,255,255,.7);border-radius:50%;color:var(--accent,#745688)}.ac-social-icon svg{width:20px;height:20px;flex:none}.ac-social-link:hover .ac-social-icon{background:var(--tint,#eee7f5);border-color:var(--accent,#745688)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.ac-header{background:rgba(248,245,250,.91);background-image:linear-gradient(115deg,rgba(255,255,255,.55),rgba(224,213,235,.25))}}
@media(max-width:1100px){.ac-header .ac-primary-nav{gap:15px}.ac-header-inner{gap:15px}.ac-header-actions{gap:10px}.ac-user-name{max-width:75px}}
@media(max-width:900px){.ac-header .ac-primary-nav{display:none}.ac-header-inner{min-height:70px;padding:10px 18px}.ac-brand{font-size:24px}.ac-header .ac-menu-toggle{display:inline-flex}.ac-header .ac-primary-nav.open{position:absolute;left:12px;right:12px;top:calc(100% + 6px);display:flex;flex-direction:column;align-items:stretch;background:rgba(255,255,255,.98);border:1px solid #e4ddea;border-radius:16px;padding:12px;box-shadow:0 15px 40px #25133122;gap:0}.ac-primary-nav.open a{padding:13px;min-height:44px}.ac-user-name{max-width:100px}}
@media(max-width:480px){.ac-header-inner{gap:8px;padding-inline:14px}.ac-brand{font-size:21px;gap:9px}.ac-symbol{width:34px;height:37px;font-size:32px}.ac-header-actions{gap:8px}.ac-user-name{display:none}.ac-header .ac-primary-action{display:none}.ac-header .ac-intake{font-size:10px;padding:7px 8px}.ac-request-badge{font-size:12px}.ac-request-badge b{font-size:11px}.ac-header .ac-menu-toggle{min-width:33px}.ac-role-menu{right:0;width:min(275px,calc(100vw - 28px))}.footer-socials{display:flex;flex-wrap:wrap;gap:12px!important}.footer-socials .ac-social-link{font-size:12px}}
@media(max-width:360px){.ac-header[data-role=admin] .ac-brand>span:last-child{display:none}.ac-header[data-role=admin] .ac-header-actions{gap:10px}}

/* A social strip is one row, never a stranded Pinterest card. Narrow screens keep recognizable icons. */
.footer-top .footer-socials{display:flex;flex-wrap:nowrap;align-items:center;gap:14px;max-width:none;flex:0 0 auto;min-width:0}
.footer-top .footer-socials .ac-social-link{white-space:nowrap;flex:0 0 auto}
@media(max-width:1150px){.footer-top .footer-socials{gap:10px}.footer-top{flex-wrap:wrap}.footer-top .footer-email{margin-left:auto}}
@media(max-width:650px){.footer-top .footer-socials{justify-content:flex-start;gap:15px!important;max-width:100%}}
@media(max-width:480px){.footer-top .footer-socials{gap:18px!important}.footer-top .footer-socials .ac-social-link{gap:0;font-size:0;padding:4px 0}.footer-socials .ac-social-icon{width:42px;height:42px}.footer-socials .ac-social-icon svg{width:22px;height:22px}}

/* Signed-in navigation: four stable destinations, not a second menu of the same links. */
.ac-header[data-role=admin] .ac-header-inner,.ac-header[data-role=student] .ac-header-inner{min-height:76px;padding-block:10px;gap:16px}
.ac-header[data-role=admin] .ac-primary-nav,.ac-header[data-role=student] .ac-primary-nav{gap:4px;font-size:14px}
.ac-header [data-ac-section]{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 12px;border-radius:10px;line-height:1.3;white-space:nowrap}
.ac-header [data-ac-section][aria-current=page]{color:var(--ac-accent);background:rgba(116,86,136,.10);font-weight:650}
.ac-header .ac-role-menu>a,.ac-header .ac-role-menu>button{font-size:14px;min-height:44px}
.ac-header .ac-role-menu>.ac-intake{border:0;border-radius:9px;background:transparent;padding:12px;min-height:44px;font-size:14px}
.ac-header .ac-request-badge{display:inline-flex;align-items:center;gap:5px;min-height:44px;font-size:13px}
@media(max-width:1000px){.ac-header[data-role=admin] .ac-user-name,.ac-header[data-role=student] .ac-user-name{display:none}.ac-header [data-ac-section]{padding-inline:9px}}
@media(max-width:900px){
 .ac-header[data-role=admin] .ac-header-inner,.ac-header[data-role=student] .ac-header-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;padding:6px 14px 4px}
 .ac-header[data-role=admin] .ac-header-actions,.ac-header[data-role=student] .ac-header-actions{grid-column:2;grid-row:1;gap:10px}
 .ac-header[data-role=admin] .ac-primary-nav,.ac-header[data-role=student] .ac-primary-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-column:1/-1;grid-row:2;width:100%;gap:2px}
 .ac-header [data-ac-section]{min-width:0;padding:8px 3px;min-height:44px;white-space:normal;text-align:center;font-size:13px}
 .ac-header[data-role=admin] .ac-brand>span:last-child{display:inline}
 .ac-header .ac-role-menu{max-height:calc(100dvh - 90px)}
}

.ac-context-return{display:inline-flex;align-items:center;min-height:40px;max-width:100%;padding:6px 0;margin-bottom:10px;font:600 14px/1.4 var(--work-sans,system-ui,sans-serif);color:var(--work-accent,#765686);text-decoration:none;overflow-wrap:anywhere}
.ac-context-return:hover{text-decoration:underline}.ac-context-return:focus-visible{outline:2px solid currentColor;outline-offset:3px;border-radius:4px}
.th-legacy-heading [data-ac-back]{white-space:normal;text-align:left;max-width:100%}

/* Student unread chat count lives inside the existing primary Chat destination. */
.ac-chat-nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;margin-left:5px;border-radius:999px;background:#745688;color:#fff;font-size:11px;font-weight:700;line-height:1}
.ac-header [data-ac-section][aria-current=page] .ac-chat-nav-badge{background:#5f4077}
@media(max-width:900px){.ac-chat-nav-badge{min-width:18px;height:18px;padding-inline:5px;margin-left:3px;font-size:10px}}

/* Student has five permanent destinations; teacher keeps four. */
@media(max-width:900px){
 .ac-header[data-role=student] .ac-primary-nav{grid-template-columns:repeat(5,minmax(0,1fr))}
 .ac-header[data-role=student] [data-ac-section]{font-size:12px;padding-inline:2px}
}
@media(max-width:390px){.ac-header[data-role=student] [data-ac-section]{font-size:11px;letter-spacing:-.15px}}

.ac-avatar{overflow:hidden}
.ac-avatar img{display:block;width:100%;height:100%;object-fit:cover;border-radius:inherit}

.ac-header-chats{position:relative}.ac-header-chat-toggle{display:flex;gap:7px;align-items:center;background:transparent;border:1px solid #d8d1df;border-radius:10px;padding:8px 10px;font:inherit;font-size:13px;color:inherit;cursor:pointer}.ac-header-chat-toggle b{background:#7655c8;color:white;border-radius:12px;min-width:20px;padding:2px 5px;font-size:11px}.ac-header-chat-toggle b[hidden],.ac-header-chat-panel[hidden]{display:none}.ac-header-chat-panel{position:absolute;z-index:80;right:0;top:calc(100% + 10px);width:300px;max-width:calc(100vw - 24px);max-height:min(480px,70dvh);overflow:auto;background:#fffdf9;color:#292735;border:1px solid #ddd5e6;border-radius:14px;padding:14px;box-shadow:0 12px 32px #21123126}.ac-header-chat-panel>strong{display:block;font-size:14px;padding:4px 8px 12px}.ac-header-chat-panel a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 8px;border-radius:8px;text-decoration:none;color:inherit;font-size:14px}.ac-header-chat-panel a:hover,.ac-header-chat-panel a:focus-visible{background:#eee8f7}.ac-header-chat-panel a span{overflow-wrap:anywhere}.ac-header-chat-panel p{font-size:13px;color:#6b6372;padding:0 8px}.ac-header-chat-panel b{color:#7655c8}.ac-header-chat-panel>a{border-top:1px solid #e5dfea;margin-top:6px}@media(max-width:600px){.ac-header-chat-panel{position:fixed;right:12px;top:calc(var(--ac-header-height,72px) + 6px)}.ac-header-chat-toggle{padding:7px;font-size:12px}}
@media(max-width:480px){.ac-header[data-role=admin] .ac-brand>span:last-child{display:none}.ac-header[data-role=admin] .ac-symbol{flex:none}}