:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --card: #ffffff;
  --card-2: #f0f3f8;
  --text: #171923;
  --muted: #6b7280;
  --line: rgba(27, 35, 55, .1);
  --brand: #4f7cff;
  --brand-2: #7557ff;
  --ok: #20b77a;
  --bad: #ff6475;
  --shadow: 0 24px 70px rgba(37, 46, 74, .12);
}
*{box-sizing:border-box}html,body{height:100%;margin:0;overflow:hidden;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}.tiny{color:var(--muted);font-size:12px}.eyebrow{margin:0 0 10px;color:var(--brand);font-size:11px;font-weight:800;letter-spacing:.16em}.logo-mark{position:relative;display:grid;width:58px;height:58px;place-items:center;overflow:hidden;border-radius:18px;background:linear-gradient(145deg,#eef3ff,#fff);box-shadow:inset 0 0 0 1px var(--line)}.logo-mark.small{width:38px;height:38px;border-radius:12px}.logo-mark img{position:absolute;width:100%;height:100%;object-fit:contain}.logo-mark span{color:var(--brand);font-weight:900;font-size:22px}.logo-mark.small span{font-size:16px}
.brand-lockup{display:flex;align-items:center;gap:10px}.hero-brand{margin-bottom:18px}.brand-item{display:grid;width:58px;height:58px;place-items:center;overflow:hidden;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,#eef3ff,#fff);box-shadow:0 12px 28px rgba(37,46,74,.08)}.brand-item img{width:82%;height:82%;object-fit:contain}.brand-x{color:#7b8495;font-weight:900;font-size:18px;letter-spacing:.08em}.school-brand{grid-template-columns:54px auto;width:auto;min-width:220px;padding:0 12px;gap:9px}.school-brand img{width:50px;height:50px}.school-brand span{font-size:13px;font-weight:850;line-height:1.25}.school-brand small{display:block;margin-top:2px;color:var(--muted);font-size:11px;font-weight:700}.brand-lockup.compact{gap:5px}.brand-lockup.compact .brand-item{width:30px;height:30px;border-radius:10px;box-shadow:none}.brand-lockup.compact .brand-x{font-size:11px}.brand-lockup.compact img{width:82%;height:82%}

.login-screen{display:grid;min-height:100%;place-items:center;padding:24px;background:radial-gradient(circle at 40% 20%,#e7efff,transparent 35%),var(--bg)}.login-card{width:min(440px,100%);padding:32px;border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.82);box-shadow:var(--shadow);backdrop-filter:blur(18px)}.login-card h1{margin:18px 0 8px;font-size:30px}.login-form{display:grid;gap:12px;margin-top:22px}.login-form input,.settings-grid input,.inline-form input,.inline-form select{width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px 14px;outline:0}.login-form input:focus,.settings-grid input:focus,.inline-form input:focus{border-color:var(--brand)}.login-form button,.primary{border:0;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));padding:12px 16px;color:#fff;font-weight:750}.secondary{border:1px solid var(--line);border-radius:14px;background:#fff;padding:12px 16px;color:var(--text);font-weight:700}.ghost{border:0;border-radius:12px;background:transparent;padding:8px 10px;color:var(--muted)}.ghost:hover,.side-link:hover{background:var(--card-2);color:var(--text)}

.app{display:flex;height:100%}.chat-sidebar{display:flex;width:286px;min-width:286px;flex-direction:column;border-right:1px solid var(--line);background:rgba(255,255,255,.72);padding:18px 14px;backdrop-filter:blur(20px)}.side-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}.side-brand div:last-child{display:grid}.side-brand strong{font-size:15px}.side-brand span{color:var(--muted);font-size:11px}.new-chat{width:100%;border:0;border-radius:16px;background:#edf3ff;padding:13px 14px;color:#245ddd;font-weight:800}.usage-card{margin:12px 0 4px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.72);padding:13px;box-shadow:0 10px 30px rgba(37,46,74,.06)}.usage-head{display:flex;gap:8px;align-items:center;justify-content:space-between}.usage-head span,.usage-line,.usage-card small{color:var(--muted);font-size:11px}.usage-head strong{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);font-size:13px}.usage-line{display:flex;justify-content:space-between;margin:9px 0 8px}.usage-bar{height:8px;overflow:hidden;border-radius:999px;background:#e8edf7}.usage-bar span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(135deg,var(--brand),var(--brand-2));transition:width .25s}.usage-card small{display:block;margin-top:8px}.side-label{margin:22px 8px 8px;color:var(--muted);font-size:11px;font-weight:800}.conversation-list{display:grid;align-content:start;gap:6px;min-height:0;overflow:auto;flex:1}.conv{display:grid;gap:4px;border:0;border-radius:14px;background:transparent;padding:11px;text-align:left;color:var(--text)}.conv.active,.conv:hover{background:#fff;box-shadow:0 8px 24px rgba(37,46,74,.08)}.conv span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv small{color:var(--muted)}.side-link{border:0;border-radius:13px;background:transparent;padding:11px;text-align:left;color:var(--muted)}.chat-main{display:flex;min-width:0;flex:1;flex-direction:column}.chat-topbar{display:flex;align-items:center;gap:12px;min-height:66px;padding:10px 22px;border-bottom:1px solid var(--line);background:rgba(246,247,251,.78);backdrop-filter:blur(16px)}.model-pill{display:flex;align-items:center;gap:10px}.model-pill div{display:grid;gap:2px}.model-pill strong{font-size:14px}.model-pill span:last-child{color:var(--muted);font-size:12px}.status-dot{width:9px;height:9px;border-radius:50%;background:var(--bad);box-shadow:0 0 0 5px rgba(255,100,117,.12)}.status-dot.online{background:var(--ok);box-shadow:0 0 0 5px rgba(32,183,122,.13)}.chat-scroll{flex:1;min-height:0;overflow:auto}.welcome{width:min(850px,calc(100% - 32px));margin:0 auto;padding:clamp(46px,10vh,110px) 0;text-align:center}.hero-orb{display:grid;width:86px;height:86px;margin:0 auto 24px;place-items:center;border-radius:28px;background:linear-gradient(145deg,#eef3ff,#fff);box-shadow:var(--shadow);color:var(--brand);font-size:26px;font-weight:900}.welcome h2{margin:0;font-size:clamp(30px,5vw,48px);letter-spacing:-.04em}.welcome p{max-width:560px;margin:16px auto;color:var(--muted);line-height:1.8}.prompt-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:32px}.prompt-grid button{border:1px solid var(--line);border-radius:18px;background:#fff;padding:18px;text-align:left;font-weight:750;box-shadow:0 10px 30px rgba(37,46,74,.06)}

.messages{width:min(850px,calc(100% - 28px));margin:0 auto;padding:30px 0 80px}.msg{display:flex;gap:14px;margin-bottom:24px}.avatar{display:grid;width:34px;height:34px;flex:0 0 auto;place-items:center;border-radius:12px;background:#eaf0ff;color:var(--brand);font-size:12px;font-weight:900}.msg.assistant .avatar{background:#fff;color:var(--brand-2)}.bubble{min-width:0;flex:1}.msg-head{display:flex;gap:8px;align-items:center;margin-bottom:7px}.msg-head strong{font-size:13px}.msg-head span{font-size:11px;color:var(--muted)}.msg-body{font-size:15px;line-height:1.85}.msg-body p{margin:0 0 10px}.msg-body h2,.msg-body h3,.msg-body h4,.msg-body h5{margin:18px 0 8px;line-height:1.35;letter-spacing:-.02em}.msg-body h2{font-size:22px}.msg-body h3{font-size:19px}.msg-body h4{font-size:17px}.msg-body h5{font-size:15px}.msg-body a{color:#245ddd;text-decoration:none;border-bottom:1px solid rgba(36,93,221,.25)}.msg-body a:hover{border-bottom-color:#245ddd}.msg-body strong{font-weight:800}.msg-body em{color:#374151}.msg-body ul,.msg-body ol{margin:8px 0 12px;padding-left:24px}.msg-body li{margin:4px 0}.msg-body blockquote{margin:12px 0;padding:10px 14px;border-left:4px solid rgba(79,124,255,.45);border-radius:0 14px 14px 0;background:#f2f5ff;color:#374151}.msg-body blockquote p:last-child{margin-bottom:0}.msg-body pre{position:relative;overflow:auto;margin:12px 0;border-radius:16px;background:#111827;color:#e5e7eb;padding:16px;line-height:1.65}.msg-body pre[data-lang]::before{content:attr(data-lang);display:block;margin-bottom:8px;color:#9ca3af;font-size:12px;text-transform:lowercase}.msg-body pre code{display:block;background:transparent;padding:0;border-radius:0;color:inherit;white-space:pre}.msg-body code{border-radius:6px;background:#eef1f7;padding:2px 5px;color:#111827;font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:.92em}.md-table-wrap{overflow:auto;margin:12px 0;border:1px solid var(--line);border-radius:16px;background:#fff}.md-table{min-width:520px;border-collapse:separate;border-spacing:0}.md-table th,.md-table td{border-bottom:1px solid var(--line);padding:10px 12px}.md-table tr:last-child td{border-bottom:0}.md-table th{background:#f6f8fd;color:#374151;font-weight:800}.typing::after{content:"";display:inline-block;width:5px;height:15px;margin-left:4px;background:var(--brand);animation:blink .8s infinite}@keyframes blink{50%{opacity:0}}.composer{width:min(880px,calc(100% - 24px));margin:0 auto max(10px,env(safe-area-inset-bottom));border:1px solid var(--line);border-radius:22px;background:#fff;padding:12px 14px;box-shadow:var(--shadow)}.composer textarea{width:100%;max-height:160px;resize:none;border:0;outline:0;background:transparent;font-size:15px;line-height:1.6}.composer-actions{display:flex;align-items:center}.composer-actions span{color:var(--muted);font-size:12px}.composer-actions button{display:grid;width:36px;height:36px;margin-left:auto;place-items:center;border:0;border-radius:13px;background:var(--text);color:#fff;font-weight:900}

.admin{display:flex;height:100%}.admin-side{width:250px;min-width:250px;border-right:1px solid var(--line);background:#fff;padding:18px 14px}.admin-tab{display:block;width:100%;border:0;border-radius:14px;background:transparent;padding:12px;text-align:left;color:var(--muted);font-weight:700}.admin-tab.active,.admin-tab:hover{background:var(--card-2);color:var(--text)}.admin-main{flex:1;min-width:0;overflow:auto;padding:26px}.admin-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.admin-head h1{margin:0;font-size:28px}.admin-panel{display:grid;gap:18px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric,.panel-card,.table-card,.record-detail{border:1px solid var(--line);border-radius:22px;background:#fff;padding:18px;box-shadow:0 12px 36px rgba(37,46,74,.06)}.metric span,.metric small{display:block;color:var(--muted);font-size:12px}.metric strong{display:block;margin:10px 0;font-size:26px}.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:14px}.settings-grid .wide{grid-column:1/-1}.settings-grid label{display:grid;gap:7px;color:var(--muted);font-size:12px}.inline-form{display:flex;flex-wrap:wrap;gap:10px}.inline-form input{flex:1;min-width:160px}.inline-form select{width:150px}.inline-form button{min-width:96px}.table-card{overflow:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}th{color:var(--muted);font-size:12px}td code{word-break:break-all}.table-input{width:120px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:7px 8px;font-size:12px}.quota-cell{min-width:148px}.quota-cell strong,.quota-cell small{display:block}.quota-cell small{margin-top:4px;color:var(--muted);font-size:11px}.badge{display:inline-block;border-radius:999px;background:#edf3ff;padding:4px 8px;color:#245ddd;font-size:12px}.mini{border:1px solid var(--line);border-radius:9px;background:#fff;padding:6px 9px;margin:2px}.split-admin{display:grid;grid-template-columns:minmax(360px,1fr) minmax(320px,1fr);gap:16px}.record-detail{min-height:400px}.admin-message{margin:12px 0;border-radius:16px;background:var(--card-2);padding:13px}.admin-message.assistant{background:#eef3ff}.toast{position:fixed;z-index:50;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;border-radius:13px;background:#111827;color:#fff;padding:10px 14px;box-shadow:var(--shadow);transition:.22s}.toast.show{opacity:1;transform:translate(-50%,0)}.mobile-only{display:none}.scrim{display:none}

@media (max-width: 820px){
  .mobile-only{display:inline-grid}.hero-brand{align-items:center;flex-wrap:wrap}.hero-brand .brand-item:not(.school-brand){width:50px;height:50px}.school-brand{width:auto;min-width:min(230px,100%);height:auto;min-height:58px;grid-template-columns:46px minmax(0,1fr);padding:8px 12px;overflow:visible}.school-brand img{width:44px;height:44px}.school-brand span{font-size:12px}.brand-lockup.compact .brand-item{width:30px;height:30px}.brand-lockup.compact .brand-item img{width:88%;height:88%}.chat-sidebar{position:fixed;z-index:20;inset:0 auto 0 0;transform:translateX(-104%);transition:.22s;box-shadow:var(--shadow)}.chat-sidebar.open{transform:translateX(0)}.scrim{position:fixed;z-index:15;inset:0;background:rgba(0,0,0,.28);opacity:0;pointer-events:none;display:block}.chat-sidebar.open + .scrim{opacity:1;pointer-events:auto}.chat-topbar{padding:10px 12px}.welcome{padding-top:42px}.prompt-grid{grid-template-columns:1fr}.cards,.settings-grid,.split-admin{grid-template-columns:1fr}.admin{display:block;overflow:auto}.admin-side{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:8px}.admin-main{padding:16px}.inline-form{display:grid}.inline-form input,.inline-form select,.inline-form button{width:100%;min-width:0}.login-card{padding:24px}.composer-actions span{display:none}
}