.lesson-editor-shell { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 24px; align-items: start; }
.editor-nav { position: sticky; top: 24px; padding: 18px; }
.editor-nav strong { display: block; margin-bottom: 10px; color: var(--brand-900); }
.editor-nav a { display: block; padding: 8px 0; color: var(--slate-700); font-weight: 700; text-decoration: none; }
.editor-nav a:hover { color: var(--brand-700); }
.lesson-editor section { scroll-margin-top: 20px; }
.lesson-editor label { display: block; margin: 0 0 7px; color: var(--brand-900); font-size: 14px; font-weight: 800; }
.lesson-editor input, .lesson-editor textarea, .lesson-editor select { width: 100%; min-height: 46px; margin-bottom: 16px; border: 1px solid #cbd5e1; border-radius: 10px; padding: 10px 12px; background: white; color: var(--slate-900); font: inherit; }
.lesson-editor textarea { min-height: 116px; resize: vertical; line-height: 1.55; }
.lesson-editor input:focus, .lesson-editor textarea:focus, .lesson-editor select:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px var(--brand-100); outline: 0; }
.editor-help { display: block; margin: -9px 0 16px; }
.editor-savebar { position: sticky; z-index: 5; bottom: 12px; display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; border: 1px solid var(--slate-200); border-radius: 14px; padding: 12px; background: rgba(255,255,255,.96); box-shadow: 0 12px 35px rgba(46,33,65,.14); }
.editor-status { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.question-editor { border-left: 4px solid var(--brand-300); }
.studio-lesson-list { display: grid; gap: 12px; margin-top: 16px; }
.studio-lesson-row { display: flex; justify-content: space-between; gap: 20px; align-items: center; border: 1px solid var(--slate-200); border-radius: 14px; padding: 16px; background: var(--slate-50); }
.studio-lesson-main { display: flex; gap: 13px; align-items: flex-start; min-width: 0; }
.studio-lesson-main h3 { margin: 2px 0 8px; }
.lesson-sequence { display: grid; place-items: center; flex: 0 0 34px; width: 34px; height: 34px; border-radius: 10px; background: var(--brand-100); color: var(--brand-700); font-weight: 850; }
.studio-meta, .studio-actions { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
.studio-meta { color: var(--slate-500); font-size: 13px; }
.unit-create { display: flex; justify-content: flex-end; margin-top: 16px; }
@media (max-width: 820px) { .lesson-editor-shell { grid-template-columns: 1fr; } .editor-nav { position: static; } .editor-nav a { display: inline-block; margin-right: 14px; } .studio-lesson-row { align-items: stretch; flex-direction: column; } }

.resource-workspace { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(270px, .65fr); gap: 22px; align-items: start; }
.resource-upload-card { padding: clamp(22px, 4vw, 32px); }
.upload-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 22px 0 26px; padding: 0; list-style: none; }
.upload-steps li { display: flex; align-items: center; gap: 9px; color: var(--slate-500); font-size: 13px; }
.upload-steps li::after { content: ""; height: 1px; flex: 1; background: var(--slate-200); }
.upload-steps li:last-child::after { display: none; }
.upload-steps li span { display: grid; place-items: center; width: 28px; height: 28px; flex: 0 0 28px; border-radius: 50%; color: var(--brand-700); background: var(--brand-100); font-weight: 850; }
.resource-form label { display: block; margin-bottom: 7px; color: var(--brand-900); font-size: 14px; font-weight: 800; }
.resource-form input[type="text"], .resource-form textarea, .resource-form select { width: 100%; min-height: 46px; margin-bottom: 7px; border: 1px solid #cbd5e1; border-radius: 10px; padding: 10px 12px; background: white; color: var(--slate-900); font: inherit; }
.resource-form textarea { min-height: 100px; resize: vertical; }
.resource-form input:focus, .resource-form textarea:focus, .resource-form select:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px var(--brand-100); outline: 0; }
.resource-form .form-field { margin-bottom: 19px; }
.resource-form .errorlist { margin: 8px 0 0; color: var(--danger); font-size: 13px; font-weight: 700; }
.file-drop-field { position: relative; margin-bottom: 24px; border: 2px dashed var(--brand-300); border-radius: 16px; background: var(--brand-50); text-align: center; transition: border-color .15s ease, background .15s ease; }
.file-drop-field:hover, .file-drop-field:focus-within { border-color: var(--brand-700); background: var(--brand-100); }
.file-drop-field.has-error { border-color: var(--danger); background: var(--danger-bg); }
.file-drop-field label { display: flex; min-height: 180px; margin: 0; padding: 24px; flex-direction: column; align-items: center; justify-content: center; gap: 6px; cursor: pointer; }
.file-drop-field label > span:not(.file-drop-icon) { color: var(--slate-500); font-weight: 600; }
.file-drop-field label small { color: var(--slate-500); }
.file-drop-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 5px; border-radius: 14px; color: white; background: var(--brand-700); font-size: 24px; font-weight: 900; }
.file-drop-field label.file-selected { border-color: var(--success); }
.file-drop-field label.file-selected #selected-file-name { color: var(--success); font-weight: 800; }
.file-drop-field input[type="file"] { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; pointer-events: none; }
.resource-details { margin-top: 4px; }
.resource-publish-choice { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 20px; margin-top: 8px; border-radius: 14px; padding: 18px; background: var(--slate-50); }
.resource-publish-choice p { margin: 4px 0 0; font-size: 13px; line-height: 1.5; }
.resource-form-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px; }
.resource-guidance { position: sticky; top: 24px; }
.visibility-example { display: flex; gap: 11px; margin-top: 13px; border-radius: 12px; padding: 14px; }
.visibility-example p { margin: 3px 0 0; color: var(--slate-500); font-size: 13px; line-height: 1.45; }
.visibility-private { background: var(--warning-bg); }
.visibility-private .status-symbol { color: var(--warning); }
.visibility-public { background: var(--success-bg); }
.visibility-public .status-symbol { color: var(--success); }
.resource-guidance hr { margin: 22px 0; border: 0; border-top: 1px solid var(--slate-200); }
.safety-list { padding-left: 20px; color: var(--slate-700); line-height: 1.6; }
.resource-card-list { display: grid; gap: 13px; }
.resource-card { display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; gap: 16px; align-items: center; border-left: 4px solid var(--warning); padding: 18px; }
.resource-card-published { border-left-color: var(--success); }
.resource-file-icon { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 14px; color: var(--brand-700); background: var(--brand-100); font-size: 11px; font-weight: 900; letter-spacing: .04em; }
.resource-card-heading { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.resource-card h3 { margin: 8px 0 5px; }
.resource-badges { display: flex; flex-wrap: wrap; gap: 7px; }
.visibility-copy { flex: 0 0 auto; color: var(--slate-500); font-size: 12px; font-weight: 750; }
.resource-card-body > p { margin: 5px 0 10px; }
.resource-file-meta { display: flex; flex-wrap: wrap; gap: 7px 14px; color: var(--slate-500); font-size: 12px; }
.resource-file-meta span + span::before { content: "·"; margin-right: 14px; }
.resource-card-actions { display: flex; flex-direction: column; gap: 8px; align-items: stretch; }
.resource-card-actions form, .resource-card-actions button { width: 100%; }
.resource-empty { display: grid; justify-items: center; padding: 44px 24px; text-align: center; }
.resource-empty p { margin-top: 0; color: var(--slate-500); }
@media (max-width: 940px) { .resource-workspace { grid-template-columns: 1fr; } .resource-guidance { position: static; } .resource-card { grid-template-columns: 54px minmax(0, 1fr); } .resource-card-actions { grid-column: 1 / -1; flex-direction: row; } }
@media (max-width: 620px) { .upload-steps { grid-template-columns: 1fr; } .upload-steps li::after { display: none; } .resource-publish-choice { grid-template-columns: 1fr; } .resource-form-actions { justify-content: stretch; } .resource-form-actions .btn { width: 100%; } .resource-card { grid-template-columns: 1fr; } .resource-file-icon { width: 44px; height: 44px; } .resource-card-heading { flex-direction: column; gap: 5px; } .resource-card-actions { display: grid; grid-template-columns: 1fr; } .resource-file-meta span + span::before { display: none; } }


.resource-edit-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 22px; align-items: start; }
.current-file-panel { display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; gap: 14px; align-items: center; margin: 4px 0 22px; border: 1px solid var(--slate-200); border-radius: 14px; padding: 15px; background: var(--slate-50); }
.current-file-panel strong, .current-file-panel small { display: block; margin-top: 3px; }
.current-file-panel a { color: var(--brand-700); font-weight: 750; }
.replacement-field { border: 1px solid var(--slate-200); border-radius: 14px; padding: 18px; }
.replacement-field p { margin: 4px 0 14px; font-size: 13px; }
.replacement-field input[type="file"] { width: 100%; border: 1px dashed var(--brand-300); border-radius: 10px; padding: 12px; background: var(--brand-50); }
.optional-label { margin-left: 5px; color: var(--slate-500); font-size: 12px; font-weight: 650; }
.resource-edit-savebar { position: static; margin-bottom: 0; }
.danger-zone { border-color: #fecaca; background: var(--danger-bg); }
.danger-zone h2 { color: var(--danger); }
.danger-zone details { margin-top: 18px; }
.danger-zone summary { color: var(--danger); font-weight: 800; cursor: pointer; }
.danger-zone form { margin-top: 14px; border-top: 1px solid #fecaca; padding-top: 14px; }
.btn-danger { color: white; background: var(--danger); }
.btn-danger:hover { background: #8f1c13; }
@media (max-width: 860px) { .resource-edit-layout { grid-template-columns: 1fr; } .current-file-panel { grid-template-columns: 54px minmax(0, 1fr); } .current-file-panel a { grid-column: 1 / -1; } }


.resource-access-summary { margin-top: 14px; border: 1px solid var(--slate-200); border-radius: 12px; padding: 12px 14px; background: var(--slate-50); }
.resource-access-heading { display: flex; justify-content: space-between; gap: 14px; align-items: center; }
.resource-access-heading span { color: var(--slate-500); font-size: 12px; font-weight: 700; }
.resource-access-summary > p { margin: 6px 0 0; color: var(--slate-500); font-size: 12px; }
.resource-access-summary details { margin-top: 8px; }
.resource-access-summary summary { color: var(--brand-700); font-size: 12px; font-weight: 800; cursor: pointer; }
.resource-access-list { display: grid; gap: 8px; margin-top: 10px; border-top: 1px solid var(--slate-200); padding-top: 10px; }
.resource-access-list > div { display: flex; gap: 9px; align-items: center; }
.resource-access-list strong, .resource-access-list small { display: block; }
.resource-access-list small { margin-top: 2px; color: var(--slate-500); font-size: 11px; }
.resource-access-avatar { width: 30px; height: 30px; flex: 0 0 30px; font-size: 11px; }
@media (max-width: 620px) { .resource-access-heading { align-items: flex-start; flex-direction: column; gap: 4px; } }


.unit-editor { max-width: 780px; }
.unit-management-layout { align-items: start; }
.unit-management-layout > .card { position: sticky; top: 24px; }
.unit-lesson-summary { display: grid; gap: 9px; }
.unit-lesson-summary > div { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 10px; align-items: center; border: 1px solid var(--slate-200); border-radius: 11px; padding: 10px; background: var(--slate-50); }
.unit-lesson-summary strong, .unit-lesson-summary small { display: block; }
.unit-lesson-summary small { margin-top: 2px; color: var(--slate-500); font-size: 11px; }
.unit-lesson-summary a { color: var(--brand-700); font-size: 13px; font-weight: 800; }
.unit-create { gap: 9px; }
@media (max-width: 620px) { .unit-management-layout > .card { position: static; } .unit-lesson-summary > div { grid-template-columns: 34px minmax(0, 1fr); } .unit-lesson-summary a { grid-column: 2; } }


.schedule-workspace { display: grid; gap: 4px; }
.class-position-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .8fr); gap: 28px; align-items: center; border-left: 5px solid var(--brand-700); }
.class-position-copy h2 { margin-bottom: 7px; }
.class-position-copy p:last-child { margin: 0; color: var(--slate-500); line-height: 1.55; }
.class-position-field label { display: block; margin-bottom: 7px; color: var(--brand-900); font-size: 13px; font-weight: 850; }
.class-position-field select { width: 100%; min-height: 48px; border: 1px solid var(--brand-300); border-radius: 10px; padding: 10px 12px; background: white; font: inherit; }
.class-position-field small { display: block; margin-top: 7px; color: var(--slate-500); }
.schedule-unit-list { display: grid; gap: 13px; }
.schedule-unit { padding: 0; overflow: hidden; }
.schedule-unit summary { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 19px 22px; cursor: pointer; }
.schedule-unit summary small, .schedule-unit summary strong { display: block; }
.schedule-unit summary small { margin-bottom: 3px; color: var(--slate-500); }
.schedule-unit-meta { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; color: var(--slate-500); font-size: 13px; }
.schedule-lessons { border-top: 1px solid var(--slate-200); }
.schedule-lesson-row { padding: 18px 22px; }
.schedule-lesson-row + .schedule-lesson-row { border-top: 1px solid var(--slate-200); }
.schedule-current { background: var(--info-bg); }
.schedule-lesson-title { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
.schedule-lesson-title h3 { margin: 7px 0 0; }
.schedule-fields { display: grid; grid-template-columns: minmax(190px, 1fr) minmax(190px, 1fr) minmax(240px, 1.2fr); gap: 14px; align-items: end; padding-left: 46px; }
.schedule-fields > div > label { display: block; margin-bottom: 6px; color: var(--brand-900); font-size: 13px; font-weight: 800; }
.schedule-fields > div > label > span { color: var(--slate-500); font-size: 11px; font-weight: 650; }
.schedule-fields input[type="datetime-local"] { width: 100%; min-height: 44px; border: 1px solid #cbd5e1; border-radius: 9px; padding: 8px 10px; background: white; font: inherit; }
.schedule-preview { min-height: 44px; display: flex; align-items: center; border: 1px solid var(--slate-200); border-radius: 9px; padding: 8px 11px; background: white; }
.schedule-preview label { display: flex !important; gap: 9px; align-items: flex-start; margin: 0 !important; cursor: pointer; }
.schedule-preview input { margin-top: 3px; }
.schedule-preview strong, .schedule-preview small { display: block; }
.schedule-preview small { margin-top: 2px; color: var(--slate-500); font-weight: 500; line-height: 1.35; }
@media (max-width: 900px) { .class-position-card { grid-template-columns: 1fr; } .schedule-fields { grid-template-columns: 1fr 1fr; } .schedule-preview { grid-column: 1 / -1; } }
@media (max-width: 620px) { .schedule-unit summary { align-items: flex-start; flex-direction: column; } .schedule-fields { grid-template-columns: 1fr; padding-left: 0; } .schedule-preview { grid-column: auto; } }