.ob-app{--ob-accent:var(--brand,#5e5ce6);width:100%;min-width:0;margin:auto}
.ob-app h2,.ob-app h3,.ob-app h4{margin-top:0}
.ob-app h5{font-size:14px}
.ob-app .page-head p{margin-bottom:0}
.ob-app button{white-space:normal;max-width:100%}
.ob-app label,.ob-app select,.ob-app input,.ob-app textarea{min-width:0;max-width:100%}
.ob-app h2,.ob-app h3,.ob-app h4,.ob-app strong,.ob-app p{overflow-wrap:anywhere}
.ob-app input[type=checkbox]{accent-color:var(--ob-accent)}
.ob-breadcrumb{display:flex;align-items:center;gap:10px;margin:0 0 22px;flex-wrap:wrap}
.ob-breadcrumb button{padding:5px 10px;min-height:34px}
.ob-breadcrumb>span{color:var(--muted,#74798d)}
.ob-choice-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.ob-choice{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:23px;text-align:left;border:1px solid var(--line,#e7e9f0);background:white;border-radius:14px;min-height:105px}
.ob-choice strong{font-size:18px}
.ob-choice span{font-size:13px;color:var(--muted,#74798d)}
.ob-choice:hover{border-color:var(--ob-accent);background:#f8f7ff}
.ob-empty{padding:30px 18px;text-align:center;color:var(--muted,#74798d);margin:0}
.ob-error{padding:18px;background:#fff2f2;border-radius:12px;color:#a32d43;white-space:pre-wrap}
.ob-filter-range{margin-bottom:20px;background:#fff;border:1px solid var(--line,#e7e9f0);border-radius:var(--radius,16px);padding:0 16px}
.ob-filter-range>summary{padding:12px 0;font-size:13px;font-weight:500;overflow-wrap:anywhere}
.ob-filter-range>summary>span{font-weight:400;color:var(--muted,#74798d);margin-left:10px}
.ob-range{display:flex;align-items:end;flex-wrap:wrap;gap:12px;padding:4px 0 16px}
.ob-range label{margin:0;min-width:170px}
.ob-range>span{font-size:12px;align-self:center}
.ob-workspace{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;align-items:start}
.ob-students{background:#fff;border:1px solid var(--line,#e7e9f0);border-radius:14px;padding:16px;position:sticky;top:16px}
.ob-search{display:flex;gap:7px;align-items:center}
.ob-search input{min-width:0;flex:1;margin-top:0!important}
.ob-search button{padding:6px 12px}
.ob-student-heading{display:flex;flex-wrap:wrap;align-items:center;gap:5px;margin:16px 0 8px}
.ob-student-heading strong{margin-right:auto}
.ob-student-heading button{font-size:12px;padding:4px;min-height:28px}
.ob-student-list{max-height:440px;overflow:auto}
.ob-student-row{display:flex;align-items:center;gap:8px;border-radius:9px;padding:0 9px;margin:4px 0;border:1px solid transparent}
.ob-student-row.selected{background:#eeedff;border-color:#dcd9ff}
.ob-student-row>input{flex-shrink:0}
.ob-student{flex:1;display:flex;flex-direction:column;align-items:flex-start;min-width:0;background:transparent;border:0;text-align:left;padding:12px 4px}
.ob-student strong{overflow-wrap:anywhere}
.ob-student small{overflow-wrap:anywhere;font-size:12px;color:var(--muted,#74798d);font-weight:400}
.ob-pager{display:flex;justify-content:space-between;align-items:center;gap:5px;margin:13px 0 0;font-size:12px}
.ob-pager button{font-size:12px;padding:5px 8px;min-height:32px}
.ob-batch{border-top:1px solid var(--line,#e7e9f0);margin-top:15px;padding-top:10px}
.ob-batch p{margin:4px 0 8px}
.ob-batch button{width:100%;font-size:12px;margin:4px 0}
.ob-batch small{display:block;color:var(--muted,#74798d);font-size:11px;margin-top:5px}
.ob-detail{min-width:0}
.ob-start{padding:90px 24px;background:white;border:1px dashed #d8dce7;border-radius:14px}
.ob-student-title,.ob-record-head,.ob-record-heading{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.ob-student-title{margin-bottom:20px}
.ob-student-title h3{font-size:21px;margin:0 0 3px}
.ob-student-title p,.ob-record-head p{margin:4px 0 0}
.ob-record-head h3{margin:0}
.ob-record-head>:first-child{min-width:0}
.ob-app .ob-record-head .actions{margin-top:0;flex-shrink:1;gap:7px}
.ob-record-head button{font-size:12px;padding:6px 10px;min-height:32px}
.ob-new-record{margin-bottom:24px}
.ob-record-heading{margin:26px 0 13px;align-items:center}
.ob-record-heading h3{margin:0}
.ob-record-heading h3 span{font-weight:400;font-size:13px;margin-left:8px}
.ob-record-heading>span{font-size:12px}
.ob-record{margin-bottom:16px;padding:20px}
.ob-badge{display:inline-block;font-size:11px;font-weight:500;padding:2px 7px;border-radius:5px;margin-left:9px;background:#e9f7ee;color:#28704b}
.ob-badge.ob-draft{background:#fff4da;color:#926217}
.ob-record-head p{font-size:12px}
.ob-answers{margin:14px 0 0}
.ob-answer{display:grid;grid-template-columns:minmax(90px,155px) minmax(0,1fr);gap:18px;padding:10px 0;border-top:1px solid #f0f1f6}
.ob-answer dt{color:var(--muted,#74798d)}
.ob-answer dd{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}
.ob-answer-section{margin:16px 0 7px;color:#56539e}
.ob-followup{background:#faf8f2;border:1px solid #ece3cc;padding:12px 14px;border-radius:9px;margin-top:16px;font-size:13px}
.ob-followup p{margin:5px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}
.ob-editor{border:1px solid #d9d6fc;margin-bottom:24px;padding:22px}
.ob-editor>label{margin-top:17px}
.ob-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;margin:20px 0}
.ob-form-grid>label,.ob-field>label{margin:0}
.ob-wide,.ob-field-section{grid-column:1/-1}
.ob-field{min-width:0}
.ob-field textarea{resize:vertical}
.ob-field .help{margin:6px 0 0;color:var(--muted,#74798d);font-size:12px}
.ob-private{font-size:11px;background:#f0f1f5;border-radius:4px;color:#6c7183;padding:2px 5px;font-weight:400;margin-left:8px}
.ob-field-section{border-bottom:1px solid var(--line,#e7e9f0);padding-bottom:9px;margin:5px 0 0}
.ob-multi{display:flex;flex-wrap:wrap;gap:8px 18px;padding-top:8px}
.ob-multi label{display:flex;align-items:center;gap:7px;font-weight:400;margin:0;min-height:32px}
.ob-save-bar{position:sticky;bottom:12px;display:flex;align-items:center;justify-content:flex-end;gap:10px;background:#fffffff5;border:1px solid #e4e1f8;border-radius:12px;padding:12px;z-index:3}
.ob-save-bar>span{font-size:12px;margin-right:auto}
.ob-follow-settings,.ob-weekly-sources{background:#fafaff;border:1px solid var(--line,#e7e9f0);border-radius:10px;padding:12px 15px;margin:20px 0}
.ob-weekly-sources article{padding:14px 0;border-top:1px solid var(--line,#e7e9f0);font-size:12px}
.ob-weekly-sources{max-height:400px;overflow:auto}
.ob-weekly-sources .ob-answer{grid-template-columns:120px 1fr;gap:10px;padding:6px 0}
.ob-weekly-sources dl{margin-bottom:0}
.ob-follow-settings .ob-form-grid{margin-bottom:4px}
.ob-follow-settings small{font-weight:400;color:var(--muted,#74798d);display:block;margin-top:5px}
.ob-template-intro{margin-bottom:24px}
.ob-template-intro p{color:var(--muted,#74798d)}
.ob-template-card h3{margin-bottom:8px}
.ob-template-card p{font-size:13px}
.ob-template-editor{max-width:1000px;margin:0 auto}
.ob-template-editor .card{margin-bottom:15px}
.ob-check{display:flex;gap:8px;align-items:center;font-weight:400!important}
.ob-grades{border:1px solid var(--line,#e7e9f0);border-radius:9px;padding:12px 16px;display:flex;gap:10px 22px;flex-wrap:wrap}
.ob-grades legend{padding:0 6px;font-size:13px}
.ob-grades label{display:flex;align-items:center;gap:6px;margin:0;font-weight:400}
.ob-field-editor .ob-form-grid{margin-bottom:0}
.ob-share{background:#f4f2ff;border-color:#d9d3fa;margin-bottom:20px}
.ob-share button{margin:0 8px 12px 0}
.ob-share p{font-size:13px}
.ob-app .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}

@media(max-width:1000px){.ob-workspace{grid-template-columns:220px minmax(0,1fr);gap:16px}
.ob-student-title{flex-direction:column;gap:12px}
.ob-record-head{flex-wrap:wrap}
.ob-form-grid{gap:14px}
.ob-answer{grid-template-columns:105px minmax(0,1fr);gap:12px}
.ob-save-bar{flex-wrap:wrap}
.ob-save-bar>span{flex-basis:100%}
}

@media(max-width:650px){.ob-workspace{grid-template-columns:1fr}
.ob-students{position:static}
.ob-student-list{max-height:230px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px}
.ob-student-row{padding:0 6px;margin:0}
.ob-student-heading{margin-top:12px}
.ob-range{padding:12px;gap:10px}
.ob-range label{min-width:0;flex:1}
.ob-range>span{flex-basis:100%}
.ob-range input{min-width:0}
.ob-range>button{flex:1}
.ob-batch{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.ob-batch p{margin:0;flex-basis:100%}
.ob-batch button{width:auto;flex:1;margin:0}
.ob-batch small{flex-basis:100%;margin:0}
.ob-choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.ob-choice{padding:17px;min-width:0}
.ob-choice strong{font-size:16px}
.ob-choice span{font-size:12px}
.ob-record,.ob-editor{padding:16px}
.ob-form-grid{grid-template-columns:1fr}
.ob-record-heading{align-items:flex-start;flex-direction:column;gap:5px}
.ob-answer{grid-template-columns:1fr;gap:3px}
.ob-answer dt{font-size:12px}
.ob-record-head{gap:10px}
.ob-record-head .actions{flex-wrap:wrap}
.ob-template-editor .ob-record-head strong{padding-top:5px}
.ob-template-editor .ob-record-head button{padding:5px 7px}
.ob-template-editor .ob-record-head .actions{gap:3px}
.ob-student-title{margin-top:10px}
.ob-save-bar button{flex:1}
.ob-weekly-sources .ob-answer{grid-template-columns:1fr}
.ob-template-card{grid-column:1/-1}
.ob-field-editor .ob-record-head{gap:6px}
.ob-app input,.ob-app textarea,.ob-app select{font-size:16px}
.ob-grades{gap:8px 14px}
}

.ob-page-head>div{min-width:0}
.ob-page-head h2{margin-bottom:6px}
.ob-page-actions{flex-shrink:0}
.ob-app .ob-home{min-height:42px;color:var(--ob-accent)}
.ob-mobile-toolbar{display:none}
.ob-app button:focus-visible,.ob-app summary:focus-visible{outline:2px solid var(--ob-accent);outline-offset:3px}
.ob-template-name{margin:12px 0 0}
.ob-detail,.ob-editor{scroll-margin-top:16px}

@media(max-width:650px){
  .ob-page-head{flex-direction:column;gap:12px;margin-bottom:18px}
.ob-page-actions{width:100%;gap:8px}
.ob-page-actions button{flex:1;padding:8px 10px}
.ob-page-head h2{font-size:23px}
.ob-app button,.ob-multi label{min-height:44px}
.ob-breadcrumb{gap:6px;margin-bottom:14px}
.ob-breadcrumb button{padding:7px 10px}
.ob-filter-range{padding:0 12px;margin-bottom:16px}
.ob-filter-range>summary>span{display:block;margin:3px 0 0}
.ob-range{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));padding:4px 0 12px}
.ob-range>span{grid-column:1/-1}
.ob-workspace.ob-show-detail>.ob-students,.ob-workspace.ob-show-students>.ob-detail{display:none}
.ob-mobile-toolbar{display:flex;gap:8px;justify-content:space-between;margin-bottom:16px}
.ob-mobile-toolbar button{flex:1;padding:8px 10px}
.ob-students{padding:14px}
.ob-student-list{max-height:52dvh;overscroll-behavior:contain;gap:6px}
.ob-student-row{align-items:center}
.ob-student-row>input{margin-right:2px}
.ob-student{padding:12px 2px}
.ob-student-heading button{padding:6px;font-size:12px}
.ob-batch button{flex-basis:100%;font-size:13px}
.ob-student-title h3{font-size:21px}
.ob-student-title>.actions{width:100%}
.ob-student-title>.actions>button{flex:1;padding:8px}
.ob-record-head .actions{width:100%;gap:8px}
.ob-app .ob-record-head .actions button{padding:8px 12px}
.ob-new-record{gap:8px;margin-bottom:18px}
.ob-new-record button{flex:1}
.ob-is-editing .ob-filter-range,.ob-is-editing .ob-student-title>.actions{display:none}
.ob-editor{padding:14px;margin-bottom:16px}
.ob-editor>.ob-record-head{align-items:center}
.ob-editor>.ob-record-head h3{margin:0;font-size:17px}
.ob-form-grid{gap:16px;margin:16px 0}
.ob-follow-settings,.ob-weekly-sources{padding:10px 12px;margin:16px 0}
.ob-follow-settings summary,.ob-weekly-sources summary{min-height:44px;display:list-item;padding:10px 0}
.ob-save-bar{bottom:8px;gap:8px;padding:10px;padding-bottom:max(10px,env(safe-area-inset-bottom))}
.ob-save-bar>span{font-size:12px}
.ob-save-bar button{padding:9px 8px;min-width:0}
.ob-template-editor .ob-record-head .actions button{flex:1;padding:8px 6px}
.ob-multi{gap:8px}
.ob-multi label{padding:6px 8px;border:1px solid var(--line,#e7e9f0);border-radius:8px;overflow-wrap:anywhere}
.ob-multi input{flex-shrink:0}

}

.ob-nav{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line,#e7e9f0);padding:0 0 14px;margin:0 0 20px}
.ob-nav button{min-height:42px;padding:9px 18px;background:transparent;border-color:transparent;border-radius:10px;color:var(--muted,#74798d)}
.ob-nav button.active{background:#eeedff;border-color:#dcd9ff;color:var(--ob-accent);font-weight:600}
.ob-data-toolbar{display:flex;justify-content:flex-end;margin:-6px 0 12px}
.ob-record-workspace{grid-template-columns:minmax(0,1fr)}
.ob-record-workspace.ob-show-detail>.ob-students,.ob-record-workspace.ob-show-students>.ob-detail{display:none}
.ob-record-workspace .ob-students{position:static}
.ob-record-workspace .ob-student-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;max-height:none}
.ob-record-workspace .ob-student-row{border:1px solid var(--line,#e7e9f0);margin:0}
.ob-record-workspace .ob-mobile-toolbar{display:flex;gap:8px;justify-content:space-between;margin-bottom:16px}
.ob-access-editor{padding:22px;margin-bottom:20px}
.ob-access-columns{display:grid;grid-template-columns:minmax(210px,1fr) minmax(0,2fr);gap:24px;margin-bottom:20px}
.ob-access-columns>section{min-width:0}
.ob-access-columns .ob-form-grid{margin-top:0}
.ob-access-teachers{display:grid;gap:6px;max-height:340px;overflow:auto;margin-top:10px;padding:3px}
.ob-access-teachers button{display:flex;align-items:center;justify-content:space-between;gap:10px;text-align:left;padding:10px 12px;background:white;border:1px solid var(--line,#e7e9f0);border-radius:9px}
.ob-access-teachers button.selected{background:#eeedff;border-color:var(--ob-accent)}
.ob-access-teachers small,.ob-access-students small{font-size:12px;color:var(--muted,#74798d);overflow-wrap:anywhere}
.ob-access-capabilities{border:1px solid var(--line,#e7e9f0);border-radius:10px;padding:12px 16px;margin:18px 0 0}
.ob-access-capabilities legend{padding:0 6px;font-size:14px}
.ob-access-capabilities p{margin:0 0 10px;font-size:13px}
.ob-access-capabilities label{margin:12px 0 6px}
.ob-access-capabilities small{display:block;margin-left:22px;color:var(--muted,#74798d);font-size:12px}
.ob-access-students{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:300px;overflow:auto;padding:3px}
.ob-access-students label{display:flex;align-items:center;gap:8px;margin:0;font-weight:400;padding:8px;border:1px solid var(--line,#e7e9f0);border-radius:8px}
.ob-access-students input{flex-shrink:0}
.ob-access-grant{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px;padding:16px 20px}
.ob-access-grant p{margin:5px 0}
.ob-access-grant small{color:var(--muted,#74798d)}
.ob-access-grant .actions{margin:0;flex-shrink:0}

/* macOS-inspired materials stay on navigation and floating controls. */
.ob-app{--ob-accent:#0a84ff;color:#1d2732}
.ob-app .ob-nav{gap:5px;border:1px solid rgba(45,65,84,.35);border-radius:15px;background:rgba(235,241,247,.78);box-shadow:0 3px 10px rgba(30,49,69,.08);backdrop-filter:blur(18px) saturate(1.35);-webkit-backdrop-filter:blur(18px) saturate(1.35);padding:7px 9px;margin-bottom:20px}
.ob-app .ob-nav button{border:1px solid transparent;border-radius:10px;color:#536171;transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.ob-app .ob-nav button:hover{background:rgba(255,255,255,.72);border-color:rgba(47,74,99,.22)}
.ob-app .ob-nav button.active{background:rgba(255,255,255,.92);border-color:rgba(33,86,132,.32);color:#075db5;box-shadow:0 1px 0 rgba(255,255,255,.95) inset,0 2px 5px rgba(26,57,86,.12)}
.ob-app .ob-students{border:1px solid rgba(47,65,82,.36);border-radius:14px;background:rgba(242,246,250,.78);box-shadow:0 3px 12px rgba(31,49,68,.08);backdrop-filter:blur(16px) saturate(1.25);-webkit-backdrop-filter:blur(16px) saturate(1.25)}
.ob-app .ob-student-row{min-height:50px;gap:9px;padding:4px 8px;margin:3px 0;border:1px solid transparent;border-radius:10px;transition:background-color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease}
.ob-app .ob-student-row:hover{background:rgba(255,255,255,.84);border-color:rgba(45,70,94,.24);box-shadow:0 2px 5px rgba(28,47,65,.08);transform:translateY(-1px)}
.ob-app .ob-student-row.selected{background:rgba(10,132,255,.13);border-color:rgba(10,93,181,.64);box-shadow:0 1px 0 rgba(255,255,255,.88) inset,0 2px 5px rgba(10,72,131,.12)}
.ob-student-avatar{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:50%;background:linear-gradient(145deg,#fff,#d9e8f5);border:1px solid rgba(46,74,99,.35);color:#24577a;font-size:14px;font-weight:650;box-shadow:0 1px 2px rgba(25,44,62,.1)}
.ob-app .ob-student{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;align-items:center;gap:2px 8px;padding:4px 16px 4px 0;min-height:40px;color:#1d2732}
.ob-app .ob-student strong{grid-column:1;grid-row:1;font-size:14px}
.ob-app .ob-student small{grid-column:1;grid-row:2;font-size:12px;color:#637181}
.ob-student-chevron{grid-column:2;grid-row:1/3;align-self:center;color:#68798a;font-size:24px;line-height:1;transition:transform .16s ease,color .16s ease}
.ob-app .ob-student-row:hover .ob-student-chevron{transform:translateX(2px);color:#075db5}
.ob-app .ob-student-row.selected .ob-student-chevron{color:#075db5}
.ob-app .ob-choice,.ob-app .ob-filter-range,.ob-app .ob-record,.ob-app .ob-editor{border-color:rgba(45,65,84,.28);box-shadow:0 1px 2px rgba(27,46,64,.05)}
.ob-app .ob-choice{border-radius:12px;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.ob-app .ob-choice:hover{background:#f4f9ff;box-shadow:0 4px 12px rgba(28,56,82,.12);transform:translateY(-1px)}
.ob-app .ob-editor,.ob-app .ob-save-bar{border-color:rgba(45,65,84,.35);border-radius:14px;background:rgba(247,250,253,.94);box-shadow:0 5px 16px rgba(30,49,69,.1)}
.ob-app button:active{transform:scale(.98)}
@media(max-width:650px){
  .ob-app .ob-students{padding:14px 12px}
  .ob-app .ob-student-list,.ob-app .ob-record-workspace .ob-student-list{display:flex;flex-direction:column;grid-template-columns:none;gap:4px;max-height:52dvh;overflow-y:auto;overscroll-behavior:contain}
  .ob-app .ob-student-row{width:100%;min-height:54px;padding:5px 9px}
  .ob-app .ob-student{min-height:42px;padding-right:14px}
  .ob-app .ob-student-avatar{width:36px;height:36px;flex-basis:36px}
  .ob-app .ob-student-row.selected{background:rgba(10,132,255,.14)}
  .ob-app .ob-nav{padding:5px;gap:3px;border-radius:13px}
  .ob-app .ob-nav button{flex:1;min-width:0;padding:8px 10px}
}
@media(prefers-reduced-motion:reduce){.ob-app .ob-nav button,.ob-app .ob-student-row,.ob-student-chevron,.ob-app .ob-choice{transition:none}}
@media(max-width:650px){
.ob-nav{gap:4px;margin-bottom:16px}.ob-nav button{flex:1;padding:9px 8px}
.ob-record-workspace .ob-student-list{grid-template-columns:1fr}
.ob-access-editor{padding:14px}.ob-access-columns{grid-template-columns:1fr;gap:20px}
.ob-access-teachers{max-height:200px;grid-template-columns:repeat(2,minmax(0,1fr))}.ob-access-teachers button{display:block}.ob-access-teachers small{display:block;margin-top:4px}
.ob-access-students label{flex-wrap:wrap}.ob-access-students small{flex-basis:100%;margin-left:22px}
.ob-access-grant{align-items:flex-start;flex-direction:column;padding:14px}.ob-access-grant .actions{width:100%}.ob-access-grant .actions button{flex:1}
}
.ob-picker-breadcrumb{display:flex;align-items:center;justify-content:space-between;gap:12px}.ob-picker-breadcrumb strong{min-width:0;overflow-wrap:anywhere}.ob-picker-breadcrumb>button{flex-shrink:0}.ob-picker-entry>button{min-height:48px;min-width:160px}.ob-picker-breadcrumb:empty{display:none}

.ob-importer{margin:0 0 18px;padding:18px}
.ob-importer h3{margin:0 0 5px}
.ob-importer p{margin:6px 0}
.ob-importer-toggle{display:flex;align-items:center;gap:10px;margin:0 0 18px}
.ob-importer-toggle small{color:var(--muted,#74798d)}
.ob-import-grade{max-width:320px;margin:14px 0}
.ob-import-classes{margin:16px 0;border:1px solid var(--line,#e7e9f0);border-radius:10px;padding:12px 14px}
.ob-import-classes>div{display:flex;flex-wrap:wrap;gap:8px}
.ob-import-classes label{display:flex;align-items:center;gap:7px;margin:0;padding:7px 10px;border:1px solid var(--line,#e7e9f0);border-radius:8px;font-weight:400;background:#fff}
.ob-import-classes input{flex-shrink:0}
.ob-import-class-actions,.ob-import-student-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:10px}
.ob-import-class-actions small,.ob-import-student-actions small{color:var(--muted,#74798d)}
.ob-import-students{max-height:280px;overflow:auto;margin:16px 0;border:1px solid var(--line,#e7e9f0);border-radius:10px;padding:10px 12px;background:#fbfcfe}
.ob-import-student-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 14px}
.ob-import-student-option{display:flex;align-items:center;gap:7px;min-width:0;margin:0;padding:6px 4px;border:0;border-radius:6px;font-weight:400;background:transparent;overflow-wrap:anywhere;cursor:pointer}
.ob-import-student-option:hover{background:#f1f4f8}
.ob-import-student-option input{flex-shrink:0;margin:0}
.ob-import-fixed{padding:9px 12px;border-radius:8px;background:#f4f6f9;color:var(--muted,#74798d)}
.ob-import-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:14px 0}
.ob-import-controls label{min-width:0}
.ob-import-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ob-import-file{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line,#e7e9f0);border-radius:8px;cursor:pointer;background:#fff}
.ob-import-file input{max-width:190px}
.ob-import-preview{margin-top:14px;border-top:1px solid var(--line,#e7e9f0);padding-top:14px}
.ob-import-summary{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.ob-import-table{max-width:100%;overflow-x:auto}
.ob-import-table table{width:100%;min-width:620px;border-collapse:collapse;font-size:13px}
.ob-import-table th,.ob-import-table td{padding:8px 10px;border-bottom:1px solid var(--line,#e7e9f0);text-align:left;vertical-align:top}
.ob-import-table th{color:var(--muted,#74798d);font-weight:600;background:#fafbfc}
.ob-import-table .ob-import-error{background:#fff2f0;color:#b42318}
@media(max-width:760px){
  .ob-import-controls{grid-template-columns:1fr}
  .ob-import-actions{align-items:stretch;flex-direction:column}
  .ob-import-file{justify-content:space-between}
  .ob-import-summary{align-items:flex-start;flex-direction:column}
  .ob-import-student-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 10px}
  .ob-import-grade{max-width:none}
}
@media(max-width:480px){.ob-import-student-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:360px){.ob-import-student-grid{grid-template-columns:1fr}}