.learning-studio {
    color: #111827;
    min-width: 0;
}

.learning-studio button,
.learning-studio input,
.learning-studio select,
.learning-studio textarea,
.learning-studio-modal button,
.learning-studio-modal input,
.learning-studio-modal select,
.learning-studio-modal textarea {
    font: inherit;
    letter-spacing: 0;
}

.learning-studio__summary {
    display: grid;
    grid-template-columns: repeat(5, minmax(110px, 1fr));
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 18px;
}

.learning-studio__summary > div {
    padding: 14px 16px;
    background: #FFFFFF;
    border-right: 1px solid #E5E7EB;
}

.learning-studio__summary > div:last-child { border-right: 0; }
.learning-studio__summary span { display: block; color: #6B7280; font-size: .76rem; font-weight: 700; margin-bottom: 4px; }
.learning-studio__summary strong { font-size: 1.35rem; color: #111827; }

.learning-studio__toolbar,
.learning-studio__hub-head,
.learning-studio__lesson-head,
.learning-studio__course-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.learning-studio__toolbar { margin-bottom: 18px; }
.learning-studio__segments { display: inline-flex; border: 1px solid #D1D5DB; border-radius: 7px; overflow: hidden; }
.learning-studio__segments button { border: 0; border-right: 1px solid #D1D5DB; background: #FFFFFF; color: #6B7280; padding: 10px 14px; cursor: pointer; font-weight: 700; }
.learning-studio__segments button:last-child { border-right: 0; }
.learning-studio__segments button.is-active { background: #FFF4EE; color: #F45B2A; }
.learning-studio__segments i { margin-right: 6px; }

.learning-studio__workspace { display: grid; grid-template-columns: minmax(220px, 280px) minmax(0, 1fr); gap: 22px; align-items: start; }
.learning-studio__nav { border-right: 1px solid #E5E7EB; padding-right: 18px; min-width: 0; }
.learning-studio__search { min-height: 42px; border: 1px solid #D1D5DB; border-radius: 7px; display: flex; align-items: center; gap: 9px; padding: 0 12px; background: #FFFFFF; }
.learning-studio__search i { color: #9CA3AF; }
.learning-studio__search input { min-width: 0; flex: 1; border: 0; outline: 0; color: #111827; background: transparent; }
.learning-studio__nav-list { display: grid; gap: 6px; margin-top: 12px; max-height: 680px; overflow-y: auto; }
.learning-studio__course-select { width: 100%; display: grid; grid-template-columns: 28px minmax(0, 1fr) 14px; gap: 9px; align-items: center; text-align: left; padding: 10px; border: 1px solid transparent; border-radius: 7px; background: transparent; cursor: pointer; color: #374151; }
.learning-studio__course-select:hover { background: #F9FAFB; }
.learning-studio__course-select.is-active { background: #FFF4EE; border-color: #FFD3C2; color: #C83E15; }
.learning-studio__course-select span:nth-child(2) { min-width: 0; }
.learning-studio__course-select strong,
.learning-studio__course-select small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.learning-studio__course-select strong { font-size: .88rem; }
.learning-studio__course-select small { color: #6B7280; margin-top: 3px; font-size: .72rem; }
.learning-studio__course-index { width: 27px; height: 27px; border-radius: 50%; background: #FFFFFF; border: 1px solid #E5E7EB; display: grid; place-items: center; font-size: .72rem; font-weight: 800; }
.learning-studio__nav-empty { color: #9CA3AF; font-size: .82rem; text-align: center; padding: 20px 8px; }

.learning-studio__content { min-width: 0; }
.learning-studio__course-header { align-items: flex-start; padding-bottom: 18px; border-bottom: 2px solid #F3F4F6; }
.learning-studio__course-header > div:nth-child(2),
.learning-studio__lesson-copy,
.learning-studio__assessment-main { flex: 1; min-width: 0; }
.learning-studio__eyebrow { color: #F45B2A; font-size: .76rem; font-weight: 800; text-transform: uppercase; margin-bottom: 4px; }
.learning-studio__course-header h3 { margin: 0; font-size: 1.45rem; }
.learning-studio__course-header p,
.learning-studio__lesson-copy p,
.learning-studio__test-card p,
.learning-studio__hub-head p { color: #6B7280; line-height: 1.45; margin: 7px 0 0; }
.learning-studio__header-actions,
.learning-studio__lesson-actions,
.learning-studio__row-actions,
.learning-studio__hub-head > div:last-child { display: flex; align-items: center; gap: 8px; }
.learning-studio__heading-marker { flex: 0 0 auto; min-width: 28px; height: 24px; display: grid; place-items: center; border-radius: 5px; color: #F45B2A; background: #FFF4EE; font-size: .68rem; font-weight: 900; }
.learning-studio__icon-btn { width: 36px; height: 36px; min-width: 36px; border: 1px solid #D1D5DB; border-radius: 7px; background: #FFFFFF; color: #4B5563; display: inline-grid; place-items: center; cursor: pointer; }
.learning-studio__icon-btn:hover { border-color: #F45B2A; color: #F45B2A; }

.learning-studio__lesson { padding: 18px 0; border-bottom: 1px solid #E5E7EB; }
.learning-studio__lesson-head { align-items: flex-start; }
.learning-studio__lesson-copy small { color: #9CA3AF; font-weight: 700; }
.learning-studio__lesson-copy h4 { margin: 2px 0 0; font-size: 1.05rem; }
.learning-studio__meta { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.learning-studio__badge { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 8px; border-radius: 5px; background: #F3F4F6; color: #6B7280; font-size: .69rem; font-weight: 800; }
.learning-studio__badge--green { background: #E9F9F3; color: #0B8A69; }
.learning-studio__badge--orange { background: #FFF1E8; color: #D64B1F; }

.learning-studio__assessment { margin: 12px 0 0 42px; padding: 11px 12px; border-left: 3px solid #20B486; background: #F7FCFA; display: flex; align-items: center; gap: 10px; }
.learning-studio__assessment-title { display: flex; align-items: center; gap: 8px; }
.learning-studio__assessment-title i { color: #20B486; }
.learning-studio__assessment-empty { margin: 12px 0 0 42px; width: calc(100% - 42px); border: 1px dashed #C7D2D0; background: #FAFCFC; color: #52706A; border-radius: 7px; padding: 12px; cursor: pointer; }
.learning-studio__assessment-empty.is-readonly { cursor: default; display: flex; align-items: center; gap: 8px; color: #9CA3AF; }

.learning-studio__hub-head { align-items: flex-start; padding-bottom: 16px; border-bottom: 1px solid #E5E7EB; }
.learning-studio__hub-head h3 { margin: 0; font-size: 1.3rem; }
.learning-studio__workflow-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 16px 0; background: #E5E7EB; border: 1px solid #E5E7EB; border-radius: 7px; overflow: hidden; }
.learning-studio__workflow-strip span { padding: 12px; background: #FFFFFF; color: #6B7280; font-size: .82rem; }
.learning-studio__workflow-strip strong { color: #111827; font-size: 1.05rem; margin-right: 4px; }
.learning-studio__test-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.learning-studio__test-card { display: grid; grid-template-columns: 42px minmax(0, 1fr) 36px; gap: 12px; border: 1px solid #E5E7EB; border-radius: 8px; padding: 14px; }
.learning-studio__test-card h4 { margin: 8px 0 0; }
.learning-studio__test-card small { color: #6B7280; display: block; margin-top: 10px; }
.learning-studio__test-icon { width: 42px; height: 42px; border-radius: 7px; display: grid; place-items: center; background: #FFF4EE; color: #F45B2A; }

.learning-studio__grading-filters { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(240px, 1.5fr); gap: 12px; margin: 16px 0; }
.learning-studio__grading-filters > label:not(.learning-studio__search) { display: grid; gap: 5px; color: #6B7280; font-size: .76rem; font-weight: 700; }
.learning-studio__grading-filters select { min-height: 42px; border: 1px solid #D1D5DB; border-radius: 7px; padding: 0 10px; background: #FFFFFF; }
.learning-studio__people-table { border: 1px solid #E5E7EB; border-radius: 8px; overflow: hidden; }
.learning-studio__people-head,
.learning-studio__person-row { display: grid; grid-template-columns: minmax(180px, 1.5fr) minmax(140px, 1fr) 110px 80px minmax(150px, auto); align-items: center; gap: 10px; padding: 11px 14px; }
.learning-studio__people-head { background: #F9FAFB; color: #6B7280; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.learning-studio__person-row { border-top: 1px solid #E5E7EB; }
.learning-studio__person-row > span:first-child strong,
.learning-studio__person-row > span:first-child small { display: block; }
.learning-studio__person-row > span:first-child small { color: #6B7280; margin-top: 3px; }
.learning-studio__back { border: 0; background: transparent; color: #F45B2A; padding: 0 0 8px; cursor: pointer; font-weight: 700; }

.learning-studio__empty,
.learning-studio__loading { min-height: 220px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: #6B7280; gap: 8px; }
.learning-studio__empty > i,
.learning-studio__loading > i { font-size: 1.8rem; color: #F45B2A; }
.learning-studio__empty strong { color: #111827; font-size: 1rem; }
.learning-studio__empty span { max-width: 440px; }
.learning-studio__empty .btn { width: auto; margin-top: 8px; }

.learning-studio-modal { position: fixed; inset: 0; z-index: 10000; background: rgba(17, 24, 39, .56); display: grid; place-items: center; padding: 18px; }
.learning-studio-modal__dialog { width: min(680px, 100%); max-height: calc(100vh - 36px); background: #FFFFFF; border-radius: 8px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 24px 60px rgba(17, 24, 39, .24); }
.learning-studio-modal__dialog.is-wide { width: min(980px, 100%); }
.learning-studio-modal__dialog > header,
.learning-studio-modal__dialog > footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; border-bottom: 1px solid #E5E7EB; }
.learning-studio-modal__dialog > footer { border-bottom: 0; border-top: 1px solid #E5E7EB; justify-content: flex-end; }
.learning-studio-modal__dialog > header span { color: #F45B2A; font-size: .7rem; font-weight: 800; text-transform: uppercase; }
.learning-studio-modal__dialog > header h3 { margin: 2px 0 0; }
.learning-studio-modal__body { padding: 18px; overflow-y: auto; }
.learning-studio__form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.learning-studio__field { display: grid; gap: 6px; min-width: 0; }
.learning-studio__field > span { color: #374151; font-size: .78rem; font-weight: 800; }
.learning-studio__field small { color: #9CA3AF; font-size: .7rem; }
.learning-studio__field input,
.learning-studio__field select,
.learning-studio__field textarea { width: 100%; box-sizing: border-box; border: 1px solid #D1D5DB; border-radius: 7px; padding: 10px 11px; outline: 0; color: #111827; background: #FFFFFF; }
.learning-studio__field input:focus,
.learning-studio__field select:focus,
.learning-studio__field textarea:focus { border-color: #20B486; box-shadow: 0 0 0 3px rgba(32, 180, 134, .12); }
.learning-studio__field input[readonly] { background: #F3F4F6; color: #6B7280; cursor: not-allowed; }
.learning-studio__field--full { grid-column: 1 / -1; }
.learning-studio__builder { margin-top: 18px; padding-top: 16px; border-top: 1px solid #E5E7EB; }
.learning-studio__builder > header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.learning-studio__builder > header strong,
.learning-studio__builder > header span { display: block; }
.learning-studio__builder > header span { color: #6B7280; font-size: .75rem; margin-top: 2px; }
.learning-question-row,
.learning-criterion-row { border: 1px solid #E5E7EB; border-radius: 8px; padding: 13px; margin-top: 10px; }
.learning-studio__repeater-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.learning-studio__check { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; color: #374151; font-weight: 700; }
.learning-assignment-fields { transition: opacity .18s ease; }
.learning-assignment-fields.is-disabled { opacity: .46; pointer-events: none; }
.learning-studio__grade-person { display: flex; justify-content: space-between; gap: 12px; padding: 12px; background: #F9FAFB; border-radius: 7px; margin-bottom: 14px; }
.learning-studio__essay { padding: 13px; border-left: 3px solid #20B486; background: #F7FCFA; margin-bottom: 14px; }
.learning-studio__essay p { white-space: pre-wrap; line-height: 1.55; margin: 8px 0 0; }

@media (max-width: 900px) {
    .learning-studio__summary { grid-template-columns: repeat(2, 1fr); }
    .learning-studio__summary > div { border-bottom: 1px solid #E5E7EB; }
    .learning-studio__workspace { grid-template-columns: 1fr; }
    .learning-studio__nav { border-right: 0; border-bottom: 1px solid #E5E7EB; padding: 0 0 14px; }
    .learning-studio__nav-list { max-height: 230px; }
    .learning-studio__test-grid { grid-template-columns: 1fr; }
    .learning-studio__people-table { overflow-x: auto; }
    .learning-studio__people-head,
    .learning-studio__person-row { min-width: 760px; }
}

@media (max-width: 620px) {
    .learning-studio__toolbar,
    .learning-studio__hub-head,
    .learning-studio__course-header { align-items: stretch; flex-direction: column; }
    .learning-studio__segments { display: grid; grid-template-columns: 1fr 1fr; }
    .learning-studio__header-actions,
    .learning-studio__hub-head > div:last-child { width: 100%; }
    .learning-studio__header-actions .btn,
    .learning-studio__hub-head .btn { flex: 1; }
    .learning-studio__workflow-strip,
    .learning-studio__grading-filters,
    .learning-studio__form-grid { grid-template-columns: 1fr; }
    .learning-studio__field--full { grid-column: auto; }
    .learning-studio__lesson-head { display: grid; grid-template-columns: 28px minmax(0, 1fr); }
    .learning-studio__lesson-actions { grid-column: 2; }
    .learning-studio__assessment,
    .learning-studio__assessment-empty { margin-left: 0; width: 100%; box-sizing: border-box; }
    .learning-studio-modal { padding: 0; place-items: stretch; }
    .learning-studio-modal__dialog,
    .learning-studio-modal__dialog.is-wide { width: 100%; max-height: 100vh; border-radius: 0; }
}

.assessment-player { position: fixed; inset: 0; z-index: 10020; background: rgba(17, 24, 39, .62); display: grid; place-items: center; padding: 18px; }
.assessment-player__dialog { width: min(860px, 100%); max-height: calc(100vh - 36px); background: #FFFFFF; border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; box-shadow: 0 24px 60px rgba(17, 24, 39, .26); }
.assessment-player__dialog > header,
.assessment-player__dialog > footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid #E5E7EB; }
.assessment-player__dialog > footer { border: 0; border-top: 1px solid #E5E7EB; justify-content: flex-end; }
.assessment-player__dialog > header span { color: #F45B2A; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.assessment-player__dialog > header h2 { margin: 3px 0 0; font-size: 1.25rem; }
.assessment-player__close { width: 38px; height: 38px; border-radius: 7px; border: 1px solid #D1D5DB; background: #FFFFFF; cursor: pointer; color: #4B5563; }
.assessment-player__body { overflow-y: auto; padding: 20px; }
.assessment-player__description { color: #4B5563; line-height: 1.55; margin: 0 0 14px; }
.assessment-player__instructions { display: flex; gap: 10px; align-items: flex-start; padding: 12px; border-left: 3px solid #20B486; background: #F4FCF9; color: #315D50; margin-bottom: 14px; }
.assessment-player__attachment { display: inline-flex; align-items: center; gap: 7px; color: #F45B2A; font-weight: 700; text-decoration: none; margin-bottom: 14px; }
.assessment-player__offline { min-height: 220px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; background: #F9FAFB; border: 1px solid #E5E7EB; border-radius: 8px; padding: 24px; }
.assessment-player__offline i { color: #20B486; font-size: 2rem; margin-bottom: 10px; }
.assessment-player__offline p { max-width: 520px; color: #6B7280; line-height: 1.55; }
.assessment-player__question { padding: 16px 0; border-bottom: 1px solid #E5E7EB; }
.assessment-player__question:last-child { border-bottom: 0; }
.assessment-player__question-title { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: start; margin-bottom: 12px; }
.assessment-player__question-title > span { color: #F45B2A; font-size: .76rem; font-weight: 800; background: #FFF1E8; border-radius: 5px; padding: 4px 7px; }
.assessment-player__question-title small { color: #6B7280; }
.assessment-player__option { display: grid; grid-template-columns: 18px 28px minmax(0, 1fr); gap: 9px; align-items: center; border: 1px solid #E5E7EB; border-radius: 7px; padding: 11px 12px; margin-top: 8px; cursor: pointer; }
.assessment-player__option:has(input:checked) { border-color: #F45B2A; background: #FFF8F4; }
.assessment-player__option > span { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 50%; background: #F3F4F6; font-weight: 800; }
.assessment-player__question textarea { width: 100%; box-sizing: border-box; border: 1px solid #D1D5DB; border-radius: 7px; padding: 12px; resize: vertical; outline: 0; }
.assessment-player__question textarea:focus { border-color: #20B486; box-shadow: 0 0 0 3px rgba(32, 180, 134, .12); }

@media (max-width: 620px) {
    .assessment-player { padding: 0; place-items: stretch; }
    .assessment-player__dialog { width: 100%; max-height: 100vh; border-radius: 0; }
    .assessment-player__question-title { grid-template-columns: auto minmax(0, 1fr); }
    .assessment-player__question-title small { grid-column: 2; }
}