/* v13 keeps the original palette, typography, clouds and rounded yellow navigation. */
/* v14: horizontal vector brand, calmer spacing and simpler daily work. */
/* v15: compact rounded vector mark; no image or painted background. */
:root{--r:21px;--sky-bg:#f5f8fd;--line:#e5ecf5}.s4e-brand{width:100%;max-width:400px;margin:0 0 24px}.s4e-brand svg{display:block;width:100%;height:auto}.sidebar .s4e-brand{background:#fff;padding:10px 8px 6px;border-radius:18px;margin:0 0 22px;box-shadow:0 6px 18px #071f4c15}.login-card{border-radius:28px}.card{box-shadow:0 4px 20px #173d7610;border-color:#e6edf6}.band{border-radius:23px}.feedback-students{display:grid;gap:9px;margin-top:12px}.feedback-student{padding:12px 14px;border:1px solid var(--line);border-radius:15px;background:#f8fbff}.feedback-student>label{margin:0;display:flex;align-items:center;gap:10px}.feedback-student .field-grid{margin-top:8px}.lesson-assets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}.lesson-asset{padding:14px;border:1px solid var(--line);border-radius:15px;background:#f8fbff}.lesson-asset h3{color:var(--royal)}.skill-tags{display:flex;flex-wrap:wrap;gap:7px}.dashboard-chart{padding:10px 0;min-width:0}.attendance-summary{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.attendance-ring{width:120px;max-width:35%;height:auto;flex:none}.attendance-list{display:grid;gap:8px}.feedback-section{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}.task-target-list{max-height:230px;overflow:auto;padding:10px;background:#f8fbff;border:1px solid var(--line);border-radius:12px}.task-target-list label{display:flex;gap:9px;font-weight:400}.recipient-note{font-size:.75rem;color:var(--ink-soft)}.task-actions{display:flex;gap:8px;align-items:center}.schema-question{padding:12px;margin:10px 0;background:#f8fbff;border:1px solid var(--line);border-radius:14px}.compact-card h2{margin-bottom:10px}
.card,.grid2,.grid3{min-width:0}.wrap-table{min-width:0;max-width:100%}
input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),input[type="email"],input[type="time"],input[type="datetime-local"]{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;font-family:var(--font-body);font-size:.95rem;background:#fff;color:var(--ink)}
input[type="file"]{display:block;max-width:100%;padding:8px 0;font:inherit;font-size:.85rem}
button:disabled,input:disabled,select:disabled,textarea:disabled{opacity:.55;cursor:wait}
.wide{width:100%}.brand-slogan{margin:0 0 20px;font-style:italic;color:var(--royal)}.sidebar-tagline{margin:-14px 10px 18px;font-size:.72rem;color:#d7e5fb;font-style:italic}
.login-card{max-width:520px}.demo-box{margin-top:20px;padding:15px;background:var(--gold-soft);border:1px solid #f6dfa4;border-radius:14px}.demo-box p{margin:6px 0 12px}.demo-grid{display:flex;flex-wrap:wrap;gap:8px}.setup-box{margin-top:18px;border-top:1px solid var(--line);padding-top:12px}.setup-box summary{cursor:pointer;font-size:.8rem;color:var(--ink-soft)}
.form-error{color:#b32e19;min-height:1em;font-size:.85rem;white-space:pre-line}.inline-note{padding:12px 16px;border-radius:12px;background:var(--royal-soft);font-size:.85rem;margin:0 0 16px}.inline-note.warning{background:var(--gold-soft);border-left:4px solid var(--gold)}.inline-note.danger{background:var(--coral-soft);border-left:4px solid var(--coral)}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}.field-grid .full{grid-column:1/-1}.field-help{font-size:.76rem;color:var(--ink-soft);margin-top:5px}.form-actions{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap}.empty{padding:26px 16px;text-align:center;color:var(--ink-soft);border:1px dashed var(--line);border-radius:12px}.wrap-table{overflow-x:auto}.wrap-table table.tbl{min-width:600px}.class-card{display:flex;flex-direction:column}.class-card .actions{margin-top:auto}.class-code{font-family:var(--font-display);font-size:1.2rem;color:var(--royal);font-weight:800}.spaced{margin-top:16px}.text-block{white-space:pre-wrap;overflow-wrap:anywhere}.checklist{max-height:230px;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:8px 12px}.checklist label{display:flex;align-items:flex-start;gap:8px;font-weight:400;margin:7px 0}.checklist input{margin:5px 0 0;flex:none}.lesson-head{display:flex;gap:12px;align-items:flex-start;justify-content:space-between}.lesson-number{background:var(--royal-soft);color:var(--royal);padding:5px 12px;border-radius:10px;font-weight:700;white-space:nowrap}.file-list{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.files-note{font-size:.77rem;color:var(--ink-soft)}.mini-list{list-style:none;margin:0;padding:0}.mini-list li{padding:10px 0;border-bottom:1px solid var(--line)}.key-value{display:grid;grid-template-columns:minmax(110px,.5fr) 1fr;gap:10px}.key-value dt{color:var(--ink-soft)}.key-value dd{margin:0;overflow-wrap:anywhere}.viewer-body{overflow:auto;padding:16px}.viewer-body iframe{background:#fff;width:100%;height:100%;min-height:60vh;border:0}.viewer-body img{display:block;max-width:100%;height:auto;margin:auto}.viewer-body pre{white-space:pre-wrap;font:inherit}.viewer-bar{gap:12px}.viewer-box{max-height:90dvh}.auth-banner{margin:0 0 18px;padding:10px 14px;background:var(--gold-soft);color:#775407;border-radius:12px;font-size:.8rem}.screen-error{border-left:4px solid var(--coral)}.toast.error{background:#a92b18}.tiny code{overflow-wrap:anywhere}.stat a{color:inherit}.shell .sidebar{overflow-y:auto}.sidebar nav{display:flex;flex-direction:column;gap:3px}.sidebar .who{margin-top:24px}.login-card .tabs button{font-size:.8rem;padding:7px 14px}details.card>summary{cursor:pointer;font-weight:700;color:var(--royal)}.subtle{font-weight:400}.score{font-variant-numeric:tabular-nums;font-weight:700}.grid3 .card{min-width:0}.tab-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin:12px 0 2px}.csv-preview{max-height:320px;overflow:auto}
.progress-chart{display:block;width:100%;height:auto;max-height:360px}
.sidebar .s4e-brand{background:transparent;box-shadow:none;padding:0;border-radius:0}.sidebar .s4e-brand svg text{fill:#fff}.sidebar .s4e-brand svg text:last-of-type{fill:#d5e4f7}.roadmap-stages{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:10px;overflow-x:auto;padding:12px 0}.roadmap-stage{padding:14px;background:#fff;border:1px solid var(--line);border-top:4px solid #d8e4f5;border-radius:15px;min-width:0}.roadmap-stage.current{border-color:#efca6a;border-top-color:var(--gold);background:#fffcf3}.roadmap-stage h3{font-size:.9rem;line-height:1.4}.roadmap-stage p{font-size:.78rem;line-height:1.55;margin-bottom:0}
.docx-preview{overflow-wrap:anywhere;line-height:1.65}.docx-preview table{border-collapse:collapse;max-width:100%;margin:16px 0;display:block;overflow-x:auto}.docx-preview td,.docx-preview th{border:1px solid var(--line);padding:8px 10px;vertical-align:top}.docx-preview th{background:var(--royal-soft)}.docx-preview img{max-width:100%;height:auto;margin:16px auto}.docx-preview h1,.docx-preview h2,.docx-preview h3{margin-top:20px}.docx-preview blockquote{border-left:4px solid var(--gold);margin:16px 0;padding:8px 16px;background:var(--gold-soft)}
@media(max-width:800px){.sidebar .s4e-brand{max-width:270px;margin-bottom:15px}.lesson-assets{grid-template-columns:1fr}.feedback-student .field-grid{grid-template-columns:1fr}.attendance-ring{max-width:120px}.login-card .s4e-brand{margin-bottom:20px}}
@media(max-width:800px){.shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto;padding:14px 16px}.sidebar .logo{padding:0 4px 0;font-size:1.25rem}.sidebar-tagline{margin:0 4px 10px}.sidebar nav{flex-direction:row;flex-wrap:wrap;gap:6px}.sidebar nav button{width:auto;padding:8px 12px;font-size:.79rem}.sidebar .who{margin:12px 4px 0;padding:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.sidebar .who b{display:inline}.sidebar .who br,.sidebar .clouds{display:none}.avatar-btn{display:none!important}.who button{margin-left:auto}.content{padding-top:18px!important}.field-grid{grid-template-columns:1fr}.login-wrap{padding:14px}.login-card{padding:25px 22px}.grid3{grid-template-columns:1fr}.viewer-backdrop{padding:8px}.viewer-box{width:100%;height:90dvh}.lesson-head{flex-wrap:wrap}.key-value{grid-template-columns:1fr}.key-value dd{margin-bottom:8px}.band svg.cl{width:150px;opacity:.25}}
.pdf-toolbar{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;position:sticky;top:-16px;background:#fff;padding:10px 0 14px;z-index:1;border-bottom:1px solid var(--line);margin-bottom:14px}.pdf-toolbar span{font-size:.84rem;color:var(--ink-soft)}.pdf-toolbar button:disabled{opacity:.4;cursor:default}.pdf-canvas{display:block;max-width:100%;margin:auto;border:1px solid #e7edf6}
@media print{body{display:block!important;background:#fff}.sidebar,.toolbar,.auth-banner,.form-actions,#toast,.viewer-backdrop,button{display:none!important}.shell{display:block}.content{max-width:none;padding:0!important}.card{break-inside:avoid}.band{background:#fff!important;color:#17284e!important;border:1px solid #ddd}.band h1,.band .muted{color:#17284e!important}}
.s4e-brand,.login-card .s4e-brand{max-width:220px;margin:0 auto 18px;background:none;border:0;box-shadow:none;padding:0}.s4e-brand svg text:first-of-type{font-family:var(--font-display)}.sidebar .s4e-brand{max-width:174px;margin:0 auto 22px;background:none;padding:0;box-shadow:none;border-radius:0}.sidebar .s4e-brand .brand-ink{fill:#fff}.sidebar .s4e-brand .brand-four{fill:#f6b51c}.sidebar .s4e-brand .brand-name{fill:#fff}.sidebar .s4e-brand .brand-slogan-svg{fill:#d5e4f7}.login-card #welcome-title{text-align:center;font-size:1.4rem;margin-bottom:18px}.login-card #auth-tabs{justify-content:center;gap:6px}.login-card #auth-tabs button{font-size:.75rem;padding:7px 11px}.feedback-preview{margin:16px 0}.feedback-preview .tbl td{vertical-align:top}.feedback-student summary{font-size:.81rem;color:var(--royal);cursor:pointer}.referral-code{overflow-wrap:anywhere}
@media(max-width:800px){.login-card .s4e-brand{max-width:190px;margin:0 auto 14px}.sidebar .s4e-brand{max-width:150px;margin:0 auto 15px}.login-card #auth-tabs button{font-size:.71rem;padding:7px 9px}}
.writing-editor{min-width:0}.writing-editor textarea{display:block;margin-bottom:0;width:100%;box-sizing:border-box;border-radius:12px 12px 0 0}.writing-counter{display:flex;justify-content:flex-end;align-items:center;gap:12px;flex-wrap:wrap;border:1.5px solid var(--line);border-top:0;border-radius:0 0 12px 12px;padding:8px 12px;background:#f8fbff;text-align:right;font-variant-numeric:tabular-nums}.writing-counter output{font-weight:700;color:var(--navy)}.word-count-help{margin:10px 0}.word-count-help summary{font-size:.78rem;color:var(--ink-soft);cursor:pointer}