/* Consolidated MVC UI 1.3.1 — local only */
@font-face{font-family:VazirmatnLocal;src:url('../fonts/Vazirmatn-Regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:VazirmatnLocal;src:url('../fonts/Vazirmatn-SemiBold.woff2') format('woff2');font-weight:600 800;font-style:normal;font-display:swap}
:root{--primary:#4D6D9A;--blue:#86B3D1;--aqua:#99CED3;--rose:#EDB5BF;--neutral:#5F6366;--ink:#243447;--muted:#718096;--bg:#F7F9FC;--surface:#fff;--line:#E6ECF2;--success:#16835B;--warning:#C98A27;--danger:#C94A4A;--radius:18px;--shadow:0 10px 30px rgba(42,58,78,.08)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:VazirmatnLocal,Tahoma,Arial,sans-serif}body{direction:rtl}a{color:var(--primary);text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{display:flex;min-height:100vh}.sidebar{width:270px;background:#fff;border-left:1px solid var(--line);padding:22px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:30}.brand{display:flex;gap:12px;align-items:center;padding:6px 8px 24px}.brand.compact{padding:0 0 18px}.brand-mark{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,var(--primary),var(--aqua));display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px;box-shadow:0 8px 20px rgba(77,109,154,.25)}.brand strong{display:block;font-size:16px}.brand small,.user-chip small{display:block;color:var(--muted);font-size:12px}.nav{display:flex;flex-direction:column;gap:6px}.nav a,.logout button{display:flex;gap:12px;align-items:center;padding:12px 14px;border-radius:13px;color:#435266;border:0;background:transparent;width:100%;cursor:pointer}.nav a img,.logout img,.quick-card img,.stat-icon img,.icon-btn img{width:22px;height:22px}.nav a.active{background:rgba(77,109,154,.10);color:var(--primary);font-weight:700}.nav a:hover,.logout button:hover{background:#F1F5F9}.logout{margin-top:auto}.main{flex:1;min-width:0}.topbar{height:78px;background:rgba(247,249,252,.92);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.top-title b{display:block}.top-title span{font-size:12px;color:var(--muted)}.user-chip{display:flex;gap:10px;align-items:center}.avatar{width:40px;height:40px;border-radius:13px;background:var(--rose);display:grid;place-items:center;font-weight:800;color:#65424A}.content{padding:28px;max-width:1500px;margin:auto}.welcome{display:flex;justify-content:space-between;align-items:center;background:linear-gradient(115deg,rgba(134,179,209,.28),rgba(237,181,191,.22));border:1px solid rgba(77,109,154,.08);padding:28px;border-radius:24px;margin-bottom:20px}.welcome h1{margin:8px 0;font-size:28px}.welcome p{margin:0;color:var(--muted)}.eyebrow{color:var(--primary);font-size:13px;font-weight:700}.welcome-art{display:flex;gap:10px;align-items:center;background:#fff;padding:12px 15px;border-radius:16px;box-shadow:var(--shadow)}.welcome-art img{width:28px}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:20px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;gap:14px;align-items:center;box-shadow:0 4px 18px rgba(52,72,92,.04)}.stat-icon{width:48px;height:48px;border-radius:15px;background:rgba(153,206,211,.25);display:grid;place-items:center}.stat-card small{display:block;color:var(--muted)}.stat-card strong{font-size:25px}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;margin-bottom:18px}.panel-head h2{margin:0 0 4px}.panel-head p{margin:0 0 15px;color:var(--muted)}.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quick-card{border:1px solid var(--line);padding:18px;border-radius:16px;color:var(--ink);display:grid;gap:8px;transition:.2s}.quick-card:hover{transform:translateY(-2px);border-color:var(--blue);box-shadow:var(--shadow)}.quick-card img{width:28px;height:28px}.quick-card span{font-size:13px;color:var(--muted)}.demo-money strong{font-size:30px;color:var(--primary)}
.guest-body{background:linear-gradient(135deg,#F4F7FB,#EFF8F8)}.guest-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.login-grid{width:min(1120px,100%);display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}.login-hero{border-radius:28px;background:linear-gradient(145deg,var(--primary),#6685AE 60%,var(--aqua));padding:56px;color:#fff;display:flex;flex-direction:column;justify-content:center;min-height:590px}.login-hero .eyebrow{color:#DDEAF6}.login-hero h1{font-size:39px;line-height:1.55;margin:12px 0}.login-hero p{font-size:16px;line-height:2;color:#F0F6FA}.hero-pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.hero-pills span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:7px 12px}.login-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:38px;box-shadow:var(--shadow);align-self:stretch;display:flex;flex-direction:column;justify-content:center}.setup-card{width:min(560px,100%)}.login-card h2{font-size:28px;margin:8px 0}.muted{color:var(--muted)}.form{display:grid;gap:15px;margin:18px 0}.form label{display:grid;gap:7px;font-size:14px;font-weight:600}.form input{border:1px solid #D7E0E8;border-radius:13px;padding:13px 14px;outline:none;background:#FBFCFE}.form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(77,109,154,.1)}.btn{border:0;border-radius:13px;padding:13px 17px;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.alert{padding:12px 14px;border-radius:12px}.alert.danger{background:#FFF0F0;color:#9D3030}.icon-btn{border:0;background:#fff;border-radius:10px;padding:9px;cursor:pointer}.mobile-only{display:none}
@media(max-width:1100px){.stats-grid{grid-template-columns:repeat(2,1fr)}.quick-grid{grid-template-columns:1fr 1fr}}@media(max-width:850px){.sidebar{position:fixed;right:-290px;transition:.25s;box-shadow:var(--shadow)}.sidebar.open{right:0}.mobile-only{display:inline-grid}.content{padding:18px}.topbar{padding:0 16px}.login-grid{grid-template-columns:1fr}.login-hero{display:none}.quick-grid{grid-template-columns:1fr}.welcome-art{display:none}}@media(max-width:520px){.stats-grid{grid-template-columns:1fr}.content{padding:12px}.welcome{padding:20px}.welcome h1{font-size:23px}.login-card{padding:24px;border-radius:20px}.guest-shell{padding:12px}}
/* MVC 1.1 — School Management */
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin:0 0 20px}.page-head h1{margin:5px 0 4px;font-size:28px}.page-head p{margin:0;color:var(--muted)}.title-row{display:flex;align-items:center;gap:10px}.back-link{display:inline-flex;margin-bottom:5px;font-size:13px;color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;font-weight:700;white-space:nowrap}.btn img{width:19px;height:19px}.btn.ghost{background:#fff;color:var(--primary);border-color:var(--line)}.btn.text{background:transparent;color:var(--primary);padding-inline:8px}.btn.small{padding:8px 11px;border-radius:10px;font-size:12px}.btn:hover{filter:brightness(.98)}.danger-text{color:var(--danger)!important}
.alert.success{background:#EAF7F1;color:#176946;border:1px solid #CDEBDE}.alert.warning{background:#FFF7E7;color:#855C13;border:1px solid #F2DFB6}.alert{margin-bottom:15px}.alert a{font-weight:800;text-decoration:underline}
.table-wrap{width:100%;overflow:auto}table{width:100%;border-collapse:collapse;min-width:780px}th,td{text-align:right;padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:12px;color:var(--muted);font-weight:700;background:#FAFBFD}tbody tr:hover{background:#FCFDFE}.row-actions{display:flex;gap:4px;align-items:center}.row-actions form{margin:0}.entity-cell{display:flex;align-items:center;gap:10px}.entity-cell small{display:block;color:var(--muted);margin-top:2px}.mini-icon{width:38px;height:38px;border-radius:12px;background:rgba(134,179,209,.16);display:grid;place-items:center;flex:0 0 auto}.mini-icon img{width:20px;height:20px}.code-chip{display:inline-block;background:#F1F5F9;border-radius:9px;padding:5px 8px;font-size:12px;direction:ltr}.status{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:800}.status.ok{background:#E5F5ED;color:#166B46}.status.off{background:#F1F3F5;color:#65717F}.status.neutral{background:#EEF2F7;color:#566477}
.empty{min-height:180px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;color:var(--muted);text-align:center}.empty img{width:38px;height:38px;opacity:.65}.empty b{color:var(--ink)}.empty.compact{min-height:90px;font-size:13px}.empty.wide{grid-column:1/-1}.form-panel{max-width:900px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-grid label,.compact-form label{display:grid;gap:7px;font-size:14px;font-weight:650}.form-grid input,.form-grid select,.form-grid textarea,.form select,.form textarea,.inline-add select{border:1px solid #D7E0E8;border-radius:13px;padding:12px 13px;background:#FBFCFE;outline:none;color:var(--ink)}.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus,.form select:focus,.form textarea:focus,.inline-add select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(77,109,154,.09)}.span-2{grid-column:1/-1}.form-actions{display:flex;gap:8px;align-items:center;margin-top:5px}.check-row{display:flex!important;grid-template-columns:auto 1fr!important;align-items:center;justify-content:flex-start;gap:8px!important;font-weight:500!important}.check-row input{width:18px;height:18px;margin:0}.two-col{display:grid;grid-template-columns:1.3fr .7fr;gap:16px}.two-col.balanced{grid-template-columns:1fr 1fr}.subcard{background:#F8FAFC;border:1px solid var(--line);padding:18px;border-radius:16px}.subcard h3{margin:0 0 10px}.compact-form{gap:11px}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.info-grid>div{background:#F8FAFC;border-radius:13px;padding:13px}.info-grid span{display:block;color:var(--muted);font-size:12px}.info-grid b{display:block;margin-top:4px}.panel-head.split{display:flex;justify-content:space-between;align-items:center}.cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.class-card{display:block;background:#fff;border:1px solid var(--line);border-radius:19px;padding:18px;color:var(--ink);transition:.2s}.class-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--blue)}.class-card h3{margin:14px 0 3px}.class-card p{margin:0;color:var(--muted);font-size:13px}.class-top{display:flex;align-items:center;justify-content:space-between}.class-meta{display:flex;gap:18px;padding-top:14px;margin-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.class-meta b{color:var(--primary);font-size:16px}.inline-add{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr) auto;gap:8px;margin-bottom:14px}.member-list{display:grid;gap:7px}.scroll-list{max-height:460px;overflow:auto;padding-left:3px}.member-row{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:13px;padding:9px 11px}.member-row form{margin:0}
.modal{position:fixed;inset:0;background:rgba(20,34,50,.42);display:none;align-items:center;justify-content:center;padding:18px;z-index:100;backdrop-filter:blur(3px)}.modal.open{display:flex}.modal-card{width:min(560px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:22px;padding:22px;box-shadow:0 24px 70px rgba(20,34,50,.24)}.modal-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;margin-bottom:12px}.modal-head h2{margin:0}.modal-head p{margin:3px 0 0;color:var(--muted);font-size:13px}.modal-head .icon-btn{font-size:24px;padding:3px 10px}
@media(max-width:1100px){.cards-grid{grid-template-columns:1fr 1fr}.two-col{grid-template-columns:1fr}.inline-add{grid-template-columns:1fr 1fr auto}}
@media(max-width:700px){.page-head{flex-direction:column;align-items:stretch}.page-head>.btn{align-self:flex-start}.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.cards-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}.info-grid .span-2{grid-column:auto}.inline-add{grid-template-columns:1fr}.two-col.balanced{grid-template-columns:1fr}.title-row{align-items:flex-start;flex-direction:column}}

/* MVC 1.2 — Student Learning */
.learning-book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.learning-book{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;border:1px solid var(--line);border-radius:18px;padding:18px;color:var(--ink);background:linear-gradient(135deg,#fff,#F9FCFE)}.learning-book:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-1px)}.learning-book h3{margin:3px 0}.learning-book small,.learning-book span{color:var(--muted);font-size:12px}.learning-book>b{color:var(--primary);font-size:13px}.book-icon{width:52px;height:52px;border-radius:16px;background:rgba(153,206,211,.25);display:grid;place-items:center}.book-icon img{width:27px}.conversation-list{display:grid;gap:8px}.conversation-list a{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid var(--line);border-radius:14px;padding:13px 15px;color:var(--ink)}.conversation-list a:hover{background:#FAFCFE}.conversation-list strong,.conversation-list small{display:block}.conversation-list small,.conversation-list span{font-size:12px;color:var(--muted)}
.chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.chapter-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:14px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;text-align:right}.chapter-card.featured{grid-column:1/-1;background:linear-gradient(120deg,rgba(134,179,209,.15),rgba(153,206,211,.13));border-color:rgba(77,109,154,.22)}.chapter-card>img{width:28px}.chapter-card strong,.chapter-card span{display:block}.chapter-card span{font-size:12px;color:var(--muted);margin-top:3px}.chapter-no{width:38px;height:38px;border-radius:12px;background:#F0F5FA;display:grid;place-items:center;color:var(--primary);font-weight:800}
.chat-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:16px;align-items:start}.chat-main{background:#fff;border:1px solid var(--line);border-radius:22px;min-height:calc(100vh - 120px);display:flex;flex-direction:column;overflow:hidden}.chat-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;align-items:center}.chat-head h1{font-size:19px;margin:1px 0}.chat-head p{margin:0;color:var(--muted);font-size:12px}.quota-chip{background:#F2F7FA;border-radius:13px;padding:8px 12px;text-align:center}.quota-chip span,.quota-chip b{display:block;font-size:11px}.quota-chip b{color:var(--primary);font-size:13px}.chat-stream{padding:22px;display:flex;flex-direction:column;gap:16px;min-height:420px;max-height:calc(100vh - 345px);overflow:auto}.chat-empty{margin:auto;text-align:center;color:var(--muted);max-width:440px}.chat-empty img{width:42px}.chat-empty h2{color:var(--ink);margin:10px 0 4px}.message{display:flex;gap:9px;max-width:82%}.message.student{align-self:flex-start;flex-direction:row-reverse}.message-avatar{width:34px;height:34px;border-radius:11px;background:#F0F5F8;display:grid;place-items:center;flex:0 0 auto}.message-avatar img{width:19px}.bubble{background:#F4F7FA;border-radius:16px 16px 16px 5px;padding:12px 14px;min-width:130px}.student .bubble{background:rgba(77,109,154,.11);border-radius:16px 16px 5px 16px}.tutor_question .bubble{background:linear-gradient(135deg,rgba(237,181,191,.22),rgba(153,206,211,.18));border:1px solid rgba(77,109,154,.12)}.tutor_evaluation .bubble{background:#F4FAF7;border:1px solid #DDEFE6}.message-text{line-height:2}.bubble time,.bubble small{display:block;margin-top:7px;color:var(--muted);font-size:10px}.source-row{display:flex;flex-wrap:wrap;gap:5px;margin-top:9px}.source-row span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 7px;font-size:10px;color:var(--primary)}.quick-actions{display:flex;gap:6px;flex-wrap:wrap;padding:8px 18px 0;border-top:1px solid var(--line)}.quick-actions button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 11px;color:var(--primary);cursor:pointer}.quick-actions .tutor-btn{background:rgba(237,181,191,.16)}.chat-composer{display:grid;grid-template-columns:1fr auto;gap:8px;padding:12px 18px 18px;align-items:end}.chat-composer textarea{resize:none;max-height:130px;border:1px solid #D8E1E9;border-radius:16px;padding:12px 14px;outline:none;background:#FBFCFD}.chat-composer textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(77,109,154,.08)}.send-btn{width:46px;height:46px;border:0;border-radius:14px;background:var(--primary);display:grid;place-items:center;cursor:pointer}.send-btn img{width:21px}.chat-error{min-height:22px;padding:0 18px 10px;color:var(--danger);font-size:12px}.chat-side{display:grid;gap:12px;position:sticky;top:96px}.side-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.side-card h3{margin:0 0 7px}.side-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.9}.safety-card{display:flex;gap:10px}.safety-card img{width:25px;align-self:flex-start}.tutor-status{display:grid;gap:5px}.tutor-status span{font-size:12px;color:var(--muted)}
@media(max-width:950px){.chat-layout{grid-template-columns:1fr}.chat-side{position:static;grid-template-columns:1fr 1fr}.chat-stream{max-height:none}.learning-book-grid,.chapter-grid{grid-template-columns:1fr}.chapter-card.featured{grid-column:auto}}
@media(max-width:600px){.message{max-width:94%}.chat-side{grid-template-columns:1fr}.chat-head{align-items:flex-start}.learning-book{grid-template-columns:auto 1fr}.learning-book>b{display:none}.chapter-card{grid-template-columns:auto 1fr}.chapter-card .btn{grid-column:1/-1}.quick-actions{overflow:auto;flex-wrap:nowrap}.quick-actions button{white-space:nowrap}.chat-stream{padding:14px}.chat-composer{padding:10px 12px 14px}}

/* MVC 1.2.1 — Class Access & Feature Control */
.subject-access-list{display:grid;gap:12px}.subject-access-card{border:1px solid var(--line);border-radius:17px;padding:15px;background:#FCFDFE}.subject-access-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.feature-toggle-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.mini-feature{border:1px solid var(--line);background:#fff;border-radius:13px;padding:10px;display:flex;align-items:center;justify-content:space-between;gap:8px}.mini-feature span{font-size:12px;font-weight:700}.switch{width:39px;height:23px;border:0;border-radius:999px;background:#DDE3E9;padding:3px;cursor:pointer;direction:ltr;transition:.2s}.switch i{display:block;width:17px;height:17px;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(30,45,60,.22);transition:.2s}.switch.on{background:var(--primary)}.switch.on i{transform:translateX(16px)}.status-toggle{border:0;border-radius:999px;padding:7px 10px;cursor:pointer;font:inherit;font-size:12px;font-weight:800}.status-toggle.on{background:#E5F5ED;color:#166B46}.status-toggle.off{background:#F1F3F5;color:#65717F}.row-actions{display:flex;align-items:center;gap:6px}.row-actions form{margin:0}.student-add{grid-template-columns:minmax(0,1fr) auto;max-width:650px}.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.feature-card{border:1px solid var(--line);border-radius:14px;padding:12px;display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,.8fr) auto;gap:8px;align-items:center}.feature-card strong,.feature-card small{display:block}.feature-card small{font-size:11px;color:var(--muted);margin-top:3px}.feature-card select{border:1px solid #D7E0E8;border-radius:11px;padding:9px;background:#FBFCFE}.activity-type{font-size:12px;color:var(--primary);font-weight:700}.activity-actions{display:flex;gap:7px;margin-top:14px}.activity-actions form{margin:0}.activity-text,.activity-content{font-size:13px;line-height:2;color:#506174;margin-top:12px}.activity-content{background:#F7F9FC;border-radius:12px;padding:12px}.activity-cards details{margin-top:12px}.activity-cards summary{cursor:pointer;color:var(--primary);font-size:13px;font-weight:700}.feature-summary{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.book-feature-chips{display:flex;gap:5px;margin-top:7px}.book-feature-chips i{font-style:normal;font-size:10px;border-radius:999px;padding:3px 7px}.book-feature-chips i.on{background:#E5F5ED;color:#166B46}.book-feature-chips i.off{background:#F1F3F5;color:#7B8794}.access-disabled{margin:12px 18px}.alert.neutral{background:#F1F5F9;color:#596979}
@media(max-width:1050px){.feature-toggle-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.feature-toggle-grid,.feature-grid{grid-template-columns:1fr}.feature-card{grid-template-columns:1fr}.subject-access-head{align-items:flex-start}.mini-feature{min-height:48px}}


/* School MVC 1.3 — Professional Responsive UI/UX Redesign
   Local-only design layer. No CDN or external assets. */
:root{
  --primary:#4D6D9A;
  --primary-strong:#3E5C86;
  --primary-soft:#EEF3F8;
  --secondary:#86B3D1;
  --aqua:#99CED3;
  --rose:#EDB5BF;
  --ink:#243447;
  --text:#34445A;
  --muted:#718096;
  --muted-2:#94A3B8;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#FAFCFE;
  --line:#E4EAF1;
  --line-strong:#D4DEE8;
  --success:#19835A;
  --success-bg:#EAF7F1;
  --warning:#B7791F;
  --warning-bg:#FFF7E6;
  --danger:#C64545;
  --danger-bg:#FFF0F0;
  --info-bg:#EEF6FB;
  --radius-xs:8px;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:22px;
  --radius-xl:28px;
  --shadow-xs:0 1px 2px rgba(31,48,68,.04);
  --shadow-sm:0 8px 24px rgba(42,58,78,.06);
  --shadow:0 18px 46px rgba(42,58,78,.09);
  --sidebar-width:286px;
  --sidebar-collapsed:88px;
  --topbar-height:76px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

html{scroll-behavior:smooth;background:var(--bg)}
body{font-size:14px;line-height:1.75;background:
  radial-gradient(circle at 10% 0%,rgba(153,206,211,.10),transparent 26rem),
  radial-gradient(circle at 95% 12%,rgba(237,181,191,.08),transparent 24rem),
  var(--bg);}
body,button,input,textarea,select{font-family:VazirmatnLocal,Tahoma,"Segoe UI",Arial,sans-serif}
button,input,textarea,select{-webkit-tap-highlight-color:transparent}
a,button{transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
:focus-visible{outline:3px solid rgba(77,109,154,.22);outline-offset:2px}
::selection{background:rgba(153,206,211,.45);color:var(--ink)}

/* ===================== APP SHELL ===================== */
.app-shell{display:flex;min-height:100dvh;position:relative}
.main{flex:1;min-width:0;transition:margin .26s var(--ease)}
.sidebar{
  width:var(--sidebar-width);height:100dvh;position:sticky;top:0;z-index:50;
  display:flex;flex-direction:column;padding:18px 14px 14px;
  background:rgba(255,255,255,.96);border-left:1px solid var(--line);
  box-shadow:-10px 0 35px rgba(42,58,78,.035);
  transition:width .26s var(--ease),transform .26s var(--ease);
  overflow:hidden;
}
.sidebar::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--aqua),var(--rose))}
.sidebar-scroll{min-height:0;overflow-y:auto;overflow-x:hidden;padding:2px 0 8px;scrollbar-width:thin;scrollbar-color:#D6E0E9 transparent}
.sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(20,34,50,.38);backdrop-filter:blur(2px);z-index:45}
.brand{display:flex;align-items:center;gap:12px;padding:8px 8px 18px;min-height:68px}
.brand-logo{width:46px;height:46px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(145deg,var(--primary),#6486AF 56%,var(--aqua));box-shadow:0 10px 25px rgba(77,109,154,.22);flex:0 0 auto}
.brand-logo img{width:25px;height:25px;filter:brightness(0) invert(1)}
.brand-copy{min-width:0;white-space:nowrap}
.brand-copy strong{display:block;font-size:15px;color:var(--ink);overflow:hidden;text-overflow:ellipsis}
.brand-copy small{display:block;font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}
.nav-section{margin:13px 10px 7px;color:var(--muted-2);font-size:10px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.nav{display:flex;flex-direction:column;gap:5px}
.nav a,.logout button{
  min-height:46px;padding:10px 12px;border-radius:13px;display:flex;align-items:center;gap:12px;
  color:#526174;background:transparent;border:1px solid transparent;width:100%;cursor:pointer;text-align:right;
  font-weight:600;white-space:nowrap;position:relative;
}
.nav a img,.logout img{width:21px;height:21px;flex:0 0 auto;opacity:.84}
.nav a:hover,.logout button:hover{background:#F4F7FA;color:var(--primary);transform:translateX(-1px)}
.nav a.active{background:linear-gradient(135deg,rgba(77,109,154,.12),rgba(153,206,211,.13));border-color:rgba(77,109,154,.09);color:var(--primary);font-weight:800}
.nav a.active::after{content:"";position:absolute;right:-14px;top:10px;bottom:10px;width:4px;border-radius:6px 0 0 6px;background:var(--primary)}
.sidebar-footer{margin-top:auto;padding-top:10px;border-top:1px solid var(--line)}
.sidebar-user{display:flex;align-items:center;gap:10px;padding:8px 9px;margin-bottom:5px;border-radius:13px;background:var(--surface-2);min-width:0}
.sidebar-user .avatar{width:36px;height:36px;border-radius:11px;flex:0 0 auto}
.sidebar-user-copy{min-width:0;white-space:nowrap}
.sidebar-user-copy strong,.sidebar-user-copy small{display:block;overflow:hidden;text-overflow:ellipsis}
.sidebar-user-copy strong{font-size:12px}.sidebar-user-copy small{font-size:10px;color:var(--muted)}
.logout{margin:0}

body.sidebar-collapsed .sidebar{width:var(--sidebar-collapsed);padding-inline:12px}
body.sidebar-collapsed .brand{justify-content:center;padding-inline:0}
body.sidebar-collapsed .brand-copy,body.sidebar-collapsed .nav-section,body.sidebar-collapsed .nav a span,body.sidebar-collapsed .logout button span,body.sidebar-collapsed .sidebar-user-copy{display:none}
body.sidebar-collapsed .nav a,body.sidebar-collapsed .logout button{justify-content:center;padding-inline:0}
body.sidebar-collapsed .nav a.active::after{right:-12px}
body.sidebar-collapsed .sidebar-user{justify-content:center;padding-inline:0;background:transparent}

/* ===================== TOPBAR ===================== */
.topbar{
  height:var(--topbar-height);position:sticky;top:0;z-index:35;padding:0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:rgba(245,248,252,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(222,231,240,.92)
}
.topbar-start,.topbar-actions{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-context{min-width:0}
.topbar-context strong{display:block;font-size:14px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-context small{display:block;font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;padding:0;box-shadow:var(--shadow-xs);flex:0 0 auto
}
.icon-btn:hover{border-color:#CBD8E4;background:#F9FBFD;transform:translateY(-1px)}
.icon-btn img{width:20px;height:20px}
.desktop-sidebar-toggle{display:grid}
.date-chip{display:flex;align-items:center;gap:7px;color:#5C6A7B;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 11px;font-size:11px;white-space:nowrap}
.date-chip img{width:17px;height:17px;opacity:.75}
.user-chip{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:6px 8px 6px 12px;box-shadow:var(--shadow-xs);min-width:0}
.user-chip .avatar,.avatar{width:39px;height:39px;border-radius:12px;background:linear-gradient(145deg,rgba(237,181,191,.72),rgba(153,206,211,.75));color:#3D5268;display:grid;place-items:center;font-weight:900}
.user-chip-copy{min-width:0}.user-chip-copy strong,.user-chip-copy small{display:block;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip-copy strong{font-size:12px}.user-chip-copy small{font-size:10px;color:var(--muted)}
.mobile-only{display:none}

.content{width:100%;max-width:1520px;margin:0 auto;padding:26px clamp(18px,2.5vw,34px) 44px}

/* ===================== PAGE HEAD / TYPOGRAPHY ===================== */
.eyebrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:11px;font-weight:850;letter-spacing:.01em}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--aqua);box-shadow:0 0 0 4px rgba(153,206,211,.16)}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin:3px 0 22px}
.page-head h1{font-size:clamp(23px,2.1vw,30px);line-height:1.45;margin:5px 0 4px;color:var(--ink);letter-spacing:-.02em}
.page-head p{margin:0;color:var(--muted);font-size:13px;max-width:760px}
.page-head-actions{display:flex;gap:8px;flex-wrap:wrap}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;margin-bottom:7px}
.muted{color:var(--muted)}

/* ===================== WELCOME / DASHBOARD ===================== */
.welcome{
  position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center;gap:24px;
  padding:clamp(22px,3vw,34px);border-radius:var(--radius-xl);margin-bottom:18px;
  background:linear-gradient(125deg,rgba(77,109,154,.12),rgba(134,179,209,.14) 50%,rgba(237,181,191,.14));
  border:1px solid rgba(77,109,154,.10);box-shadow:var(--shadow-sm)
}
.welcome::before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;left:-95px;top:-145px;background:rgba(153,206,211,.18)}
.welcome::after{content:"";position:absolute;width:190px;height:190px;border-radius:50%;left:100px;bottom:-150px;background:rgba(237,181,191,.16)}
.welcome>div{position:relative;z-index:1}
.welcome h1{margin:7px 0 5px;font-size:clamp(24px,2.6vw,34px);line-height:1.5;letter-spacing:-.025em}
.welcome p{margin:0;color:#647386;font-size:13px;max-width:690px}
.welcome-art{min-width:210px;display:flex;gap:11px;align-items:center;background:rgba(255,255,255,.84);padding:12px 14px;border:1px solid rgba(255,255,255,.88);border-radius:16px;box-shadow:0 12px 30px rgba(55,75,98,.08)}
.welcome-art img{width:29px;height:29px}.welcome-art strong,.welcome-art span{display:block}.welcome-art strong{font-size:12px}.welcome-art span{font-size:10px;color:var(--muted)}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}
.stat-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px;display:flex;gap:13px;align-items:center;box-shadow:var(--shadow-xs)}
.stat-card::after{content:"";position:absolute;width:70px;height:70px;border-radius:50%;left:-38px;bottom:-38px;background:rgba(153,206,211,.11)}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:#D6E1EA}
.stat-icon{width:47px;height:47px;border-radius:14px;background:linear-gradient(145deg,rgba(134,179,209,.20),rgba(153,206,211,.28));display:grid;place-items:center;flex:0 0 auto}
.stat-icon img{width:23px;height:23px}.stat-card small{display:block;color:var(--muted);font-size:11px}.stat-card strong{display:block;margin-top:1px;font-size:clamp(21px,2vw,27px);line-height:1.35;color:var(--ink)}
.panel{background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:20px;padding:20px;margin-bottom:16px;box-shadow:var(--shadow-xs)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:15px}.panel-head h2{font-size:17px;margin:0 0 3px}.panel-head p{font-size:12px;margin:0;color:var(--muted)}
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}
.quick-card{position:relative;border:1px solid var(--line);padding:17px;border-radius:16px;color:var(--ink);display:grid;grid-template-columns:auto 1fr;column-gap:12px;row-gap:2px;align-items:center;background:linear-gradient(145deg,#fff,#FBFDFE)}
.quick-card img{width:27px;height:27px;grid-row:1/3;align-self:start;margin-top:2px}.quick-card b{font-size:13px}.quick-card span{font-size:11px;color:var(--muted);line-height:1.65}.quick-card:hover{transform:translateY(-2px);border-color:rgba(77,109,154,.28);box-shadow:var(--shadow-sm)}
.dashboard-note{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:15px;background:var(--info-bg);border:1px solid #DCECF6}.dashboard-note img{width:22px}.dashboard-note strong,.dashboard-note span{display:block}.dashboard-note strong{font-size:12px}.dashboard-note span{font-size:11px;color:var(--muted);margin-top:2px}

/* ===================== BUTTONS / FORMS ===================== */
.btn{min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:9px 15px;font-weight:800;font-size:12px;white-space:nowrap;cursor:pointer}
.btn img{width:18px;height:18px}.btn.primary{background:linear-gradient(145deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 8px 18px rgba(77,109,154,.18)}.btn.primary:hover{transform:translateY(-1px);box-shadow:0 12px 24px rgba(77,109,154,.22)}
.btn.secondary{background:rgba(134,179,209,.16);border-color:rgba(134,179,209,.28);color:var(--primary)}
.btn.ghost{background:#fff;color:var(--primary);border-color:var(--line)}.btn.ghost:hover{background:#F8FAFC;border-color:#CBD8E4}.btn.text{background:transparent;color:var(--primary);padding-inline:8px}.btn.small{min-height:34px;padding:6px 10px;border-radius:9px;font-size:11px}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.form,.form-grid,.compact-form{gap:14px}.form label,.form-grid label,.compact-form label{display:grid;gap:6px;color:#435165;font-size:12px;font-weight:750}
.form input,.form select,.form textarea,.form-grid input,.form-grid select,.form-grid textarea,.compact-form input,.compact-form select,.compact-form textarea,.inline-add input,.inline-add select{
  width:100%;min-height:44px;border:1px solid var(--line-strong);border-radius:12px;padding:10px 12px;background:#FBFCFE;color:var(--ink);outline:none;box-shadow:inset 0 1px 1px rgba(31,48,68,.015)
}
textarea{line-height:1.9}.form input:hover,.form select:hover,.form textarea:hover,.form-grid input:hover,.form-grid select:hover,.form-grid textarea:hover{border-color:#C5D3DF}.form input:focus,.form select:focus,.form textarea:focus,.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus,.compact-form input:focus,.compact-form select:focus,.compact-form textarea:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(77,109,154,.09)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.span-2{grid-column:1/-1}.form-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:4px}.form-panel{max-width:980px}.check-row{min-height:44px;padding:8px 10px;background:#F8FAFC;border:1px solid var(--line);border-radius:11px}.check-row input{accent-color:var(--primary)}

/* ===================== TABLES ===================== */
.table-wrap{width:100%;overflow:auto;border-radius:14px;border:1px solid var(--line);background:#fff;scrollbar-width:thin;scrollbar-color:#CBD8E4 transparent}
.table-wrap table{width:100%;min-width:780px;border-collapse:separate;border-spacing:0}
.table-wrap th,.table-wrap td{padding:13px 12px;border-bottom:1px solid var(--line);vertical-align:middle;text-align:right}
.table-wrap th{position:sticky;top:0;z-index:2;background:#F8FAFC;color:#7A8796;font-size:10px;font-weight:850;white-space:nowrap}.table-wrap tbody tr:last-child td{border-bottom:0}.table-wrap tbody tr:hover td{background:#FBFDFE}
.entity-cell{display:flex;align-items:center;gap:10px;min-width:170px}.entity-cell b{font-size:12px}.entity-cell small{display:block;color:var(--muted);font-size:10px}.mini-icon{width:38px;height:38px;border-radius:11px;background:linear-gradient(145deg,rgba(134,179,209,.16),rgba(153,206,211,.23));display:grid;place-items:center;flex:0 0 auto}.mini-icon img{width:19px;height:19px}.row-actions{display:flex;gap:5px;align-items:center;justify-content:flex-start}.row-actions form{margin:0}.code-chip{display:inline-flex;align-items:center;background:#F1F5F9;border:1px solid #E4EAF0;border-radius:8px;padding:4px 7px;font-size:10px;direction:ltr}.status{display:inline-flex;align-items:center;gap:5px;padding:4px 8px;border-radius:999px;font-size:10px;font-weight:850}.status::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.65}.status.ok{background:var(--success-bg);color:#19704E}.status.off{background:#F1F3F5;color:#697584}.status.neutral{background:#EEF2F7;color:#59697A}

/* ===================== CARDS / EMPTY / MODAL ===================== */
.cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.class-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px;color:var(--ink);box-shadow:var(--shadow-xs)}.class-card:hover{transform:translateY(-2px);border-color:#D2DEE8;box-shadow:var(--shadow-sm)}.class-card h3{font-size:15px;margin:12px 0 3px}.class-card p{font-size:11px;color:var(--muted);margin:0}.class-top{display:flex;justify-content:space-between;align-items:center}.class-meta{display:flex;gap:8px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.class-meta span{flex:1;background:#F8FAFC;border-radius:10px;padding:8px;font-size:10px;color:var(--muted)}.class-meta b{color:var(--ink);font-size:12px}
.empty{min-height:170px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;color:var(--muted);text-align:center;padding:24px}.empty img{width:42px;height:42px;opacity:.58}.empty b{color:var(--ink);font-size:13px}.empty span{font-size:11px}.subcard{background:#F8FAFC;border:1px solid var(--line);border-radius:15px;padding:16px}
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:18px;background:rgba(19,33,49,.44);backdrop-filter:blur(5px)}.modal.open{display:flex}.modal-card{width:min(600px,100%);max-height:min(90dvh,780px);overflow:auto;background:#fff;border:1px solid rgba(255,255,255,.7);border-radius:22px;padding:20px;box-shadow:0 30px 90px rgba(18,32,48,.26);animation:modalIn .2s var(--ease)}@keyframes modalIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:12px}.modal-head h2{font-size:18px;margin:0}.modal-head p{font-size:11px;color:var(--muted);margin:3px 0 0}
.alert{display:flex;align-items:flex-start;gap:8px;padding:11px 13px;margin-bottom:13px;border-radius:11px;font-size:11px;font-weight:650}.alert.success{background:var(--success-bg);border:1px solid #D4EDDF;color:#176946}.alert.warning{background:var(--warning-bg);border:1px solid #F0DEB6;color:#805814}.alert.danger{background:var(--danger-bg);border:1px solid #F2D0D0;color:#983535}.alert.neutral{background:#F2F5F8;border:1px solid #E4EAF0;color:#5B6877}

/* ===================== LOGIN / GUEST ===================== */
.guest-body{min-height:100dvh;background:
  radial-gradient(circle at 5% 5%,rgba(153,206,211,.20),transparent 27rem),
  radial-gradient(circle at 95% 95%,rgba(237,181,191,.18),transparent 25rem),
  linear-gradient(145deg,#F5F8FC,#EEF4F8)}
.guest-shell{min-height:100dvh;display:grid;place-items:center;padding:clamp(14px,3vw,34px)}
.login-grid{width:min(1180px,100%);display:grid;grid-template-columns:minmax(0,1.08fr) minmax(390px,.72fr);gap:14px;align-items:stretch;background:rgba(255,255,255,.38);padding:8px;border-radius:32px;border:1px solid rgba(255,255,255,.72);box-shadow:0 28px 90px rgba(42,58,78,.11)}
.login-hero{position:relative;overflow:hidden;min-height:620px;border-radius:25px;padding:clamp(34px,5vw,62px);display:flex;flex-direction:column;justify-content:center;color:#fff;background:linear-gradient(145deg,#48678F 0%,#5F80A8 55%,#7CAFC2 100%)}
.login-hero::before,.login-hero::after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.15)}.login-hero::before{width:340px;height:340px;left:-110px;top:-135px;box-shadow:0 0 0 55px rgba(255,255,255,.025),0 0 0 110px rgba(255,255,255,.018)}.login-hero::after{width:250px;height:250px;right:-110px;bottom:-130px;background:rgba(237,181,191,.12)}
.login-hero>*{position:relative;z-index:1}.login-hero .eyebrow{color:#E8F3FA}.login-hero .eyebrow::before{background:#D7F0F1;box-shadow:0 0 0 4px rgba(255,255,255,.11)}.login-hero h1{font-size:clamp(32px,4vw,46px);line-height:1.6;margin:12px 0 8px;max-width:620px;letter-spacing:-.03em}.login-hero>p{font-size:14px;line-height:2.15;color:#F2F7FB;max-width:610px}.hero-pills{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}.hero-pills span{padding:6px 10px;border:1px solid rgba(255,255,255,.17);border-radius:999px;background:rgba(255,255,255,.10);font-size:10px}.login-visual{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:26px;max-width:600px}.login-visual-item{padding:11px;border-radius:13px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.12)}.login-visual-item img{width:23px;height:23px;filter:brightness(0) invert(1);opacity:.9}.login-visual-item strong,.login-visual-item small{display:block}.login-visual-item strong{font-size:10px;margin-top:5px}.login-visual-item small{font-size:9px;color:#EAF3F8}
.login-card{background:rgba(255,255,255,.96);border:1px solid rgba(225,233,241,.9);border-radius:25px;padding:clamp(26px,4vw,42px);display:flex;flex-direction:column;justify-content:center;box-shadow:none}.login-card .brand{padding:0 0 24px}.login-card .brand-logo{width:44px;height:44px}.login-card h2{font-size:25px;margin:4px 0}.login-card>p{font-size:12px}.login-card .form{margin:20px 0 14px}.login-card .btn.primary{width:100%;min-height:46px}.login-footer-note{margin-top:12px;padding-top:13px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}
.setup-card{width:min(620px,100%);background:#fff;border-radius:24px;padding:28px;box-shadow:var(--shadow)}

/* ===================== LEARNING / CHAT POLISH ===================== */
.learning-book,.chapter-card,.conversation-list a,.subject-access-card,.feature-card,.side-card{box-shadow:var(--shadow-xs)}
.learning-book:hover,.chapter-card:hover,.conversation-list a:hover{box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.chat-main{border-radius:20px;box-shadow:var(--shadow-xs)}.chat-stream{scrollbar-width:thin;scrollbar-color:#CBD8E4 transparent}.bubble{box-shadow:0 3px 12px rgba(42,58,78,.035)}.chat-composer{background:linear-gradient(to top,#fff 80%,rgba(255,255,255,.95))}.send-btn{box-shadow:0 8px 18px rgba(77,109,154,.20)}

/* ===================== RESPONSIVE ===================== */
@media(max-width:1200px){
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cards-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-toggle-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media(max-width:960px){
  body.sidebar-collapsed .sidebar{width:var(--sidebar-width)}
  .sidebar{position:fixed;right:0;top:0;transform:translateX(105%);box-shadow:-22px 0 70px rgba(21,37,55,.16)}
  .sidebar.open{transform:translateX(0)}
  body.sidebar-open{overflow:hidden}.sidebar-backdrop.open{display:block}
  .desktop-sidebar-toggle{display:none}.mobile-only{display:grid}
  .topbar{padding-inline:16px}.date-chip{display:none}.content{padding:20px 16px 36px}
  .two-col,.two-col.balanced,.chat-layout{grid-template-columns:1fr!important}.chat-side{position:static!important;grid-template-columns:repeat(2,minmax(0,1fr))}
  .login-grid{grid-template-columns:1fr;max-width:620px}.login-hero{min-height:auto;padding:28px}.login-hero h1{font-size:30px}.login-visual{display:none}
}

@media(max-width:760px){
  :root{--topbar-height:68px}
  .content{padding:16px 12px 28px}.topbar{padding-inline:11px;gap:8px}.topbar-start{gap:7px}.topbar-context small{display:none}.topbar-context strong{font-size:12px}.user-chip{padding:4px}.user-chip-copy{display:none}.user-chip .avatar{width:36px;height:36px}
  .page-head{flex-direction:column;align-items:stretch;margin-bottom:16px}.page-head h1{font-size:23px}.page-head p{font-size:11px}.page-head>.btn,.page-head-actions .btn{width:100%}.page-head-actions{display:grid;grid-template-columns:1fr}
  .welcome{padding:20px;border-radius:20px}.welcome h1{font-size:24px}.welcome p{font-size:11px}.welcome-art{display:none}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.stat-card{padding:13px;gap:9px}.stat-icon{width:40px;height:40px;border-radius:12px}.stat-icon img{width:20px}.stat-card strong{font-size:20px}.stat-card small{font-size:9px}
  .quick-grid,.cards-grid,.learning-book-grid,.chapter-grid,.feature-grid,.feature-toggle-grid{grid-template-columns:1fr!important}.quick-card{padding:15px}.panel{padding:15px;border-radius:17px}.panel-head h2{font-size:15px}
  .form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.form-actions{display:grid;grid-template-columns:1fr;width:100%}.form-actions .btn{width:100%}
  .inline-add,.student-add{grid-template-columns:1fr!important}
  .modal{align-items:flex-end;padding:0}.modal-card{width:100%;max-height:88dvh;border-radius:22px 22px 0 0;padding:18px;animation:sheetIn .22s var(--ease)}@keyframes sheetIn{from{transform:translateY(22px);opacity:.85}to{transform:none;opacity:1}}
  /* table -> mobile cards; labels are injected locally by app-v13.js */
  .table-wrap{border:0;background:transparent;overflow:visible}.table-wrap table.responsive-table{min-width:0;display:block}.responsive-table thead{display:none}.responsive-table tbody{display:grid;gap:10px}.responsive-table tr{display:block;background:#fff;border:1px solid var(--line);border-radius:15px;padding:5px 12px;box-shadow:var(--shadow-xs)}.responsive-table tbody tr:hover td{background:transparent}.responsive-table td{display:grid;grid-template-columns:minmax(86px,34%) minmax(0,1fr);gap:10px;align-items:center;padding:9px 0;border-bottom:1px dashed #E7ECF1!important;font-size:11px}.responsive-table td:last-child{border-bottom:0!important}.responsive-table td::before{content:attr(data-label);font-size:9px;color:var(--muted);font-weight:800}.responsive-table td[colspan]{display:block;text-align:center}.responsive-table td[colspan]::before{display:none}.responsive-table .row-actions{justify-content:flex-start;flex-wrap:wrap}.responsive-table .entity-cell{min-width:0}.responsive-table .btn.small{min-height:32px}
  .chat-side{grid-template-columns:1fr}.chat-main{min-height:calc(100dvh - 94px);border-radius:16px}.chat-head{padding:14px}.chat-stream{padding:13px;max-height:none}.message{max-width:96%}.quick-actions{overflow-x:auto;flex-wrap:nowrap;padding-inline:12px}.quick-actions button{white-space:nowrap}.chat-composer{padding:9px 10px 12px}.chat-composer textarea{min-height:44px}.send-btn{width:44px;height:44px}
  .login-grid{padding:0;border:0;background:transparent;box-shadow:none}.login-hero{display:none}.login-card{padding:24px 20px;border-radius:22px;box-shadow:var(--shadow)}.guest-shell{padding:12px}.login-card h2{font-size:23px}
  .subject-access-head{align-items:flex-start;flex-direction:column}.activity-actions{flex-wrap:wrap}
}

@media(max-width:430px){
  .stats-grid{grid-template-columns:1fr}.stat-card{min-height:72px}.topbar-context{max-width:160px}.content{padding-inline:10px}.sidebar{width:min(88vw,310px)}
  .responsive-table td{grid-template-columns:1fr;gap:3px}.responsive-table td::before{margin-bottom:1px}.class-meta{flex-direction:column}.login-card{padding-inline:17px}
}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}



/* =========================================================
   MVC 1.3.1 — UI Stabilization / Screenshot fixes
   ========================================================= */
html,body{width:100%;overflow-x:hidden}
body{min-width:0}
img{display:block;max-width:100%;object-fit:contain}
.app-shell,.main,.content,.topbar,.sidebar,.panel,.welcome,.stats-grid,.quick-grid{min-width:0}

/* Critical shell images: never allow intrinsic SVG sizing to escape */
.brand-logo img{width:25px!important;height:25px!important;max-width:25px!important;max-height:25px!important}
.nav a img,.logout img{width:21px!important;height:21px!important;max-width:21px!important;max-height:21px!important}
.date-chip img{width:17px!important;height:17px!important;max-width:17px!important;max-height:17px!important}
.welcome-art img{width:29px!important;height:29px!important;max-width:29px!important;max-height:29px!important}
.stat-icon img{width:23px!important;height:23px!important;max-width:23px!important;max-height:23px!important}
.quick-card img{width:27px!important;height:27px!important;max-width:27px!important;max-height:27px!important}
.dashboard-note img,.note-icon img{width:22px!important;height:22px!important;max-width:22px!important;max-height:22px!important;flex:0 0 22px!important}
.btn img{width:18px!important;height:18px!important;max-width:18px!important;max-height:18px!important}

/* CSS-only menu controls: no broken image icon possible */
.icon-btn.shell-toggle{position:relative;overflow:hidden}
.icon-btn.shell-toggle img{display:none!important}
.shell-toggle-glyph{width:20px;height:20px;display:block;position:relative;color:var(--primary)}
.shell-toggle-glyph::before,.shell-toggle-glyph::after{content:"";position:absolute;inset-inline:2px;border:1.8px solid currentColor;border-radius:3px}
.shell-toggle-glyph::before{top:2px;bottom:2px}
.shell-toggle-glyph::after{top:2px;bottom:2px;right:7px;border-top:0;border-bottom:0;border-left:0;border-radius:0}
.mobile-menu-glyph{width:20px;height:14px;display:block;border-top:2px solid var(--primary);border-bottom:2px solid var(--primary);position:relative}
.mobile-menu-glyph::after{content:"";position:absolute;left:0;right:0;top:5px;border-top:2px solid var(--primary)}

/* Header stabilization */
.topbar{direction:rtl;isolation:isolate}
.topbar-start{flex:1 1 auto;overflow:hidden}
.topbar-actions{flex:0 0 auto;margin-inline-start:auto}
.topbar-context{max-width:min(440px,42vw)}
.date-chip{direction:rtl}
.date-chip bdi,.jalali-date{direction:ltr;unicode-bidi:isolate;white-space:nowrap;display:inline-block}
.user-chip{max-width:230px}
.user-chip-copy{overflow:hidden}

/* Sidebar user must never collide with avatar / labels */
.sidebar-user{overflow:hidden}
.sidebar-user-copy{flex:1 1 auto;max-width:185px}
.sidebar-user-copy strong,.sidebar-user-copy small{line-height:1.55}
.sidebar-footer{background:#fff;position:relative;z-index:2}

/* Dashboard polish */
.welcome{min-height:148px}
.welcome-main{min-width:0}
.welcome-art{flex:0 0 auto;max-width:280px}
.stat-card{min-height:86px}
.stat-card>div:last-child{min-width:0}
.quick-card{min-height:92px;overflow:hidden}
.dashboard-note{margin-top:0;align-items:center;overflow:hidden}
.note-icon{width:40px;height:40px;border-radius:12px;background:rgba(77,109,154,.09);display:grid;place-items:center;flex:0 0 40px}
.note-icon img{margin:auto}

/* Login refinement */
.login-grid{align-items:stretch}
.login-hero{overflow:hidden}
.login-hero h1{max-width:680px}
.login-visual-item{display:grid!important;grid-template-columns:28px 1fr;grid-template-rows:auto auto;column-gap:9px;row-gap:0;align-items:center;text-align:right}
.login-visual-item img{grid-row:1/3;width:24px!important;height:24px!important;margin:0!important}
.login-visual-item strong{grid-column:2;grid-row:1;margin:0!important;line-height:1.45}
.login-visual-item small{grid-column:2;grid-row:2;line-height:1.45}
.login-card{min-width:0}
.login-card input{font-size:13px}

/* Prevent stale giant assets even if a legacy selector wins */
.dashboard-note>img,.quick-card>img,.stat-icon>img,.welcome-art>img{object-fit:contain!important;align-self:center}

@media (max-width:1200px){
  .topbar-context{max-width:320px}
  .welcome-art{max-width:230px}
}
@media (max-width:960px){
  .topbar-context{max-width:55vw}
  .sidebar-user-copy{max-width:190px}
}
@media (max-width:760px){
  .topbar-actions{gap:6px}
  .topbar-context{max-width:calc(100vw - 150px)}
  .welcome{min-height:0}
  .stats-grid{grid-template-columns:1fr 1fr!important}
  .stat-card{min-height:76px}
  .dashboard-note{align-items:flex-start}
  .login-card{padding:24px 18px}
}
@media (max-width:420px){
  .stats-grid{grid-template-columns:1fr!important}
  .stat-card{min-height:70px}
  .topbar-context{max-width:calc(100vw - 120px)}
}

/* MVC 1.4 — Super Admin Book Import Studio */
.book-admin-grid{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}.book-admin-card{display:flex;flex-direction:column;gap:16px}.book-card-top{display:flex;align-items:center;gap:14px}.book-cover-icon{width:54px;height:54px;border-radius:16px;background:linear-gradient(145deg,#e9f4f6,#edf1f8);display:grid;place-items:center;flex:none}.book-cover-icon img{width:28px;height:28px}.book-card-top h3{margin:0 0 4px}.book-meta-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:13px;color:#5f6366}.book-meta-row>span:not(.status-pill){background:#f6f8fb;border:1px solid #e5eaf2;border-radius:999px;padding:5px 9px}.book-card-actions{margin-top:auto}.status-pill{display:inline-flex;align-items:center;gap:5px;padding:6px 10px;border-radius:999px;background:#fff4d8;color:#775500;font-size:12px;font-weight:700}.status-pill.ok{background:#e5f6ef;color:#176847}.status-pill.warn{background:#fff1cc;color:#805600}.book-create-form{max-width:900px}.span-2{grid-column:1/-1}.import-status-strip{display:grid;grid-template-columns:repeat(8,minmax(110px,1fr));gap:10px;margin-bottom:18px}.import-status-strip>div{background:#fff;border:1px solid #e5eaf2;border-radius:16px;padding:13px 14px;box-shadow:0 4px 14px rgba(45,68,92,.04)}.import-status-strip small{display:block;color:#7a8797;margin-bottom:5px}.import-status-strip strong{font-size:18px;color:#243447}.import-step{position:relative;margin-bottom:16px;border:1px solid #e5eaf2}.import-step.active-step{border-color:#99ced3;box-shadow:0 0 0 3px rgba(153,206,211,.16),0 9px 24px rgba(54,78,104,.06)}.step-no{display:inline-grid;place-items:center;width:31px;height:31px;border-radius:10px;background:#4d6d9a;color:#fff;font-weight:800;margin-left:8px}.import-step .panel-head h2{display:inline-block;margin:0}.import-step .panel-head p{margin:8px 0 0}.actions-row{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-top:14px}.progress-line{height:10px;border-radius:999px;background:#edf1f5;overflow:hidden;margin:14px 0}.progress-line span{display:block;height:100%;background:linear-gradient(90deg,#4d6d9a,#99ced3);transition:width .25s}.import-log{margin-top:12px;background:#182431;color:#dce6ef;border-radius:12px;padding:12px 14px;white-space:pre-wrap;max-height:260px;overflow:auto;font-size:13px;direction:rtl}.quality-counters,.embedding-stats{display:flex;gap:10px;flex-wrap:wrap}.quality-counters b,.embedding-stats span{background:#f6f8fb;border:1px solid #e5eaf2;border-radius:12px;padding:8px 11px}.quality-counters .ok{color:#16805a}.quality-counters .warn{color:#9c6a00}.quality-counters .bad{color:#b23d4a}.smoke-row{display:grid;grid-template-columns:1fr auto;gap:10px}.smoke-results{min-height:80px}.manager-review-card{margin-bottom:18px}.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.source-box{background:#f8fafc;border:1px solid #e5eaf2;border-radius:13px;padding:13px;white-space:pre-wrap;max-height:360px;overflow:auto;font-size:14px}.review-decision{margin-top:15px}
@media(max-width:1200px){.import-status-strip{grid-template-columns:repeat(4,1fr)}}
@media(max-width:760px){.import-status-strip{grid-template-columns:repeat(2,1fr)}.review-grid{grid-template-columns:1fr}.smoke-row{grid-template-columns:1fr}.actions-row .btn{flex:1 1 auto}.book-admin-grid{grid-template-columns:1fr}}


/* =========================================================
   MVC 1.4.1 — School detail / manager form stabilization
   ========================================================= */
.school-admin-management-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:18px;
  align-items:start;
  direction:rtl;
}
.school-admin-management-grid>*{min-width:0}
.school-admin-list{min-width:0}
.school-admin-list .table-wrap{max-width:100%;overflow:auto}
.school-admin-list .table-wrap table{min-width:640px}
.school-admin-create{
  min-width:0;
  background:linear-gradient(155deg,#fff,#F8FBFD);
  border-color:#DDE6EE;
  box-shadow:0 8px 24px rgba(48,70,94,.055);
  padding:18px;
}
.school-admin-create-head{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.school-admin-create-head .mini-icon{width:42px;height:42px;border-radius:13px}
.school-admin-create-head .mini-icon img{width:21px;height:21px}
.school-admin-create-head h3{margin:0;font-size:15px;color:var(--ink)}
.school-admin-create-head p{margin:3px 0 0;color:var(--muted);font-size:10px;line-height:1.7}
.school-admin-form{display:grid;grid-template-columns:1fr;gap:12px}
.school-admin-form label{min-width:0}
.school-admin-form input{width:100%;min-width:0}
.school-admin-form .btn{width:100%;margin-top:3px}

@media(max-width:1280px){
  .school-admin-management-grid{grid-template-columns:1fr}
  .school-admin-create{position:static}
  .school-admin-form{grid-template-columns:repeat(2,minmax(0,1fr))}
  .school-admin-form .btn{grid-column:1/-1}
}
@media(max-width:760px){
  .school-admin-management-grid{gap:12px}
  .school-admin-create{padding:15px}
  .school-admin-form{grid-template-columns:1fr}
  .school-admin-form .btn{grid-column:auto}
  .school-admin-list .table-wrap table{min-width:0}
}


/* =========================================================
   MVC 1.4.2 — Book Import Studio UI stabilization
   ========================================================= */
.import-status-strip{
  align-items:stretch;
  margin-top:4px;
  margin-bottom:20px;
}
.import-status-strip>div{
  min-width:0;
  min-height:84px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  position:relative;
  overflow:hidden;
}
.import-status-strip>div::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:3px;
  background:linear-gradient(90deg,var(--primary),var(--aqua));
  opacity:.4;
}
.import-status-strip small{font-size:11px;line-height:1.5}
.import-status-strip strong{font-size:20px;line-height:1.4;word-break:break-word}
.import-step{padding:20px}
.import-step .panel-head{align-items:flex-start}
.import-step .panel-head>div{min-width:0}
.import-step .panel-head h2{font-size:18px;line-height:1.6}
.import-step .panel-head p{max-width:760px;line-height:1.9}
.import-step .status-pill{white-space:nowrap}
.import-step .btn{min-height:44px}
.import-log{min-height:46px}
@media(max-width:1200px){
  .import-status-strip{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:760px){
  .import-status-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .import-status-strip>div{min-height:72px;padding:10px 11px;border-radius:13px}
  .import-status-strip strong{font-size:17px}
  .import-step{padding:15px}
  .import-step .panel-head{display:flex;flex-direction:column;gap:10px}
  .import-step .panel-head .btn,.import-step .panel-head .status-pill{align-self:stretch;text-align:center;justify-content:center}
}


/* MVC 1.4.3 — Existing Qdrant import attach */
.existing-import-ready{border:1px solid rgba(35,132,89,.22);background:linear-gradient(135deg,#fff 0%,rgba(153,206,211,.12) 100%)}
.existing-import-hero{display:flex;align-items:flex-start;gap:16px}
.existing-import-icon{display:grid;place-items:center;flex:0 0 48px;width:48px;height:48px;border-radius:16px;background:#e5f7ee;color:#1e7b52;font-size:25px;font-weight:900}
.existing-import-hero h2{margin:3px 0 6px}.existing-import-hero p{margin:0;color:var(--muted,#65758b);max-width:820px}
.existing-import-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:18px 0}
.existing-import-stats>div{padding:13px 14px;border:1px solid var(--line,#e5eaf2);background:#fff;border-radius:14px;min-width:0}
.existing-import-stats small{display:block;color:var(--muted,#65758b);font-size:12px;margin-bottom:4px}
.existing-import-stats strong{display:block;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.attach-existing-card{border:1px dashed rgba(77,109,154,.35);background:linear-gradient(135deg,rgba(134,179,209,.08),#fff 45%)}
.existing-warning{background:#fff8e9;border:1px solid #f3ddaa;color:#785916;padding:11px 13px;border-radius:12px;margin:12px 0}
.alert.compact{margin:12px 0 0;padding:10px 12px}.ltr{direction:ltr;text-align:left}
@media(max-width:900px){.existing-import-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.existing-import-hero{flex-direction:column}.existing-import-stats{grid-template-columns:1fr}.attach-existing-card .actions-row .btn{width:100%}}