#lesson-observation-modal {
    --obs-ui-bg: #07101f;
    --obs-ui-panel: rgba(15, 23, 42, 0.94);
    --obs-ui-panel-2: rgba(30, 41, 59, 0.72);
    --obs-ui-line: rgba(148, 163, 184, 0.22);
    --obs-ui-text: #f8fafc;
    --obs-ui-muted: #94a3b8;
    --obs-ui-soft: #cbd5e1;
    --obs-ui-good: #10b981;
    --obs-ui-warning: #f59e0b;
    --obs-ui-help: #ef4444;
    --obs-ui-blue: #38bdf8;
}

#lesson-observation-modal .observation-container {
    --obs-left-width: 300px;
    --obs-note-width: 380px;
    --obs-resize-width: 10px;
    width: min(1780px, 98vw) !important;
    max-width: none !important;
    height: min(960px, 94vh) !important;
    padding: 0 !important;
    background: var(--obs-ui-panel) !important;
    border: 1px solid rgba(148, 163, 184, 0.26) !important;
    border-radius: 24px !important;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.46) !important;
}

#lesson-observation-modal .observation-container.fullscreen {
    width: 100vw !important;
    height: 100vh !important;
    border-radius: 0 !important;
}

#lesson-observation-modal .obs-header {
    padding: 13px 18px !important;
    gap: 12px;
    background: rgba(15, 23, 42, 0.86);
}

#lesson-observation-modal .obs-titlebox,
#lesson-observation-modal .obs-header-actions {
    min-width: 0;
}

#lesson-observation-modal .obs-titlebox h2 {
    white-space: nowrap;
}

#lesson-observation-modal .obs-mode-badge,
#lesson-observation-modal .obs-count-badge {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    border: 1px solid rgba(56, 189, 248, 0.28);
    border-radius: 999px;
    padding: 4px 10px;
    background: rgba(56, 189, 248, 0.12);
    color: #bae6fd;
    font-size: 0.8rem;
    font-weight: 800;
    white-space: nowrap;
}

#lesson-observation-modal .obs-mode-tabs {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 999px;
    padding: 4px;
    background: rgba(2, 6, 23, 0.42);
}

#lesson-observation-modal .obs-mode-tab {
    border: 0;
    border-radius: 999px;
    padding: 7px 11px;
    background: transparent;
    color: var(--obs-ui-muted);
    font-size: 0.82rem;
    font-weight: 800;
    cursor: pointer;
    white-space: nowrap;
}

#lesson-observation-modal .obs-mode-tab.active,
#lesson-observation-modal #obs-selection-mode-btn.active {
    border: 1px solid rgba(16, 185, 129, 0.34);
    background: rgba(16, 185, 129, 0.18);
    color: #bbf7d0;
}

#lesson-observation-modal .obs-body {
    display: grid !important;
    grid-template-columns: var(--obs-left-width) var(--obs-resize-width) minmax(520px, 1fr) var(--obs-resize-width) var(--obs-note-width);
    gap: 0 !important;
    padding-top: 0 !important;
    min-height: 0;
}

#lesson-observation-modal .observation-container.class-mode .obs-body {
    grid-template-columns: var(--obs-left-width) var(--obs-resize-width) minmax(520px, 1fr) var(--obs-resize-width) var(--obs-note-width);
}

#lesson-observation-modal .observation-container.review-mode .obs-body {
    grid-template-columns: var(--obs-left-width) var(--obs-resize-width) minmax(520px, 1fr) var(--obs-resize-width) var(--obs-note-width);
}

#lesson-observation-modal .observation-container.note-closed .obs-body {
    grid-template-columns: var(--obs-left-width) var(--obs-resize-width) minmax(520px, 1fr) 0 0;
}

#lesson-observation-modal #obs-lesson-pane,
#lesson-observation-modal #obs-activity-pane {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
    border-right: 1px solid var(--obs-ui-line) !important;
    padding: 16px !important;
    background: rgba(15, 23, 42, 0.66);
}

#lesson-observation-modal #obs-lesson-pane.collapsed {
    flex: unset !important;
    width: 64px !important;
    padding: 12px 8px !important;
    overflow: hidden !important;
}

#lesson-observation-modal #obs-layout-divider,
#lesson-observation-modal #obs-note-layout-divider {
    position: relative;
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: auto !important;
    min-width: var(--obs-resize-width);
    margin: 0 !important;
    cursor: col-resize;
    touch-action: none;
    background: rgba(148, 163, 184, 0.06) !important;
    transition: background 0.15s ease;
    z-index: 12;
}

#lesson-observation-modal #obs-layout-divider {
    grid-column: 2;
    grid-row: 1;
}

#lesson-observation-modal #obs-note-layout-divider {
    grid-column: 4;
    grid-row: 1;
}

#lesson-observation-modal #obs-layout-divider > div,
#lesson-observation-modal #obs-note-layout-divider > div {
    width: 2px !important;
    height: 42px !important;
    border-radius: 999px !important;
    background: rgba(148, 163, 184, 0.6) !important;
}

#lesson-observation-modal #obs-layout-divider:hover,
#lesson-observation-modal #obs-note-layout-divider:hover,
#lesson-observation-modal #obs-layout-divider.is-dragging,
#lesson-observation-modal #obs-note-layout-divider.is-dragging {
    background: rgba(56, 189, 248, 0.16) !important;
}

#lesson-observation-modal .observation-container.note-closed #obs-note-layout-divider {
    display: none !important;
}

#lesson-observation-modal .obs-main-pane {
    grid-column: 3;
    grid-row: 1;
    min-width: 0;
    padding: 15px !important;
    background: rgba(7, 16, 31, 0.2);
}

#lesson-observation-modal .obs-main-toolbar {
    gap: 10px;
    flex-wrap: wrap;
}

#lesson-observation-modal .obs-student-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

#lesson-observation-modal .obs-mode-hint {
    min-width: 180px;
    color: var(--obs-ui-muted);
    font-size: 0.82rem;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#lesson-observation-modal .obs-student-filterbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

#lesson-observation-modal .obs-student-filterbar input,
#lesson-observation-modal .obs-student-filterbar select {
    min-height: 38px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 12px;
    padding: 8px 11px;
    background: rgba(2, 6, 23, 0.44);
    color: var(--obs-ui-text);
    outline: none;
}

#lesson-observation-modal .obs-student-filterbar input {
    width: 190px;
}

#lesson-observation-modal .obs-stats-strip {
    display: grid;
    grid-template-columns: repeat(5, minmax(96px, 1fr));
    gap: 8px;
    margin-bottom: 10px;
}

#lesson-observation-modal .obs-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 14px;
    padding: 10px 12px;
    background: rgba(30, 41, 59, 0.54);
    color: var(--obs-ui-soft);
    font-size: 0.82rem;
    font-weight: 800;
}

#lesson-observation-modal .obs-stat b {
    color: var(--obs-ui-text);
    font-size: 1.1rem;
}

#lesson-observation-modal .observation-container.class-mode .obs-stats-strip {
    display: none;
}

#lesson-observation-modal #obs-selection-bar {
    display: none !important;
    border-color: rgba(56, 189, 248, 0.28);
    background: rgba(8, 47, 73, 0.42);
}

#lesson-observation-modal #obs-selection-bar.is-visible {
    display: flex !important;
}

#lesson-observation-modal #obs-student-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--card-min-width, 184px), 1fr)) !important;
    gap: var(--grid-row-gap, 11px) !important;
    padding: 2px 5px 20px 2px !important;
}

#lesson-observation-modal .observation-container.review-mode #obs-student-grid {
    --card-min-width: 230px;
}

#lesson-observation-modal .obs-card {
    min-height: 116px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 18px;
    padding: 12px;
    background: linear-gradient(180deg, rgba(30, 41, 59, 0.93), rgba(15, 23, 42, 0.94));
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

#lesson-observation-modal .obs-card.status-good {
    border-color: rgba(16, 185, 129, 0.64);
    background: linear-gradient(180deg, rgba(6, 78, 59, 0.72), rgba(15, 23, 42, 0.94));
}

#lesson-observation-modal .obs-card.status-warning {
    border-color: rgba(245, 158, 11, 0.72);
    background: linear-gradient(180deg, rgba(120, 53, 15, 0.72), rgba(15, 23, 42, 0.94));
}

#lesson-observation-modal .obs-card.status-help {
    border-color: rgba(239, 68, 68, 0.72);
    background: linear-gradient(180deg, rgba(127, 29, 29, 0.72), rgba(15, 23, 42, 0.94));
}

#lesson-observation-modal .obs-card-name {
    max-width: 100%;
    padding-right: 24px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--obs-ui-text);
    font-size: 0.95em;
    font-weight: 900;
}

#lesson-observation-modal .obs-card-note-preview {
    margin-top: 2px;
    color: var(--obs-ui-muted);
    font-size: 0.75em;
    line-height: 1.35;
}

#lesson-observation-modal .observation-container.review-mode .obs-card-note-preview {
    min-height: 34px;
    white-space: normal;
}

#lesson-observation-modal .obs-status-buttons {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
    gap: 6px !important;
    margin-top: auto !important;
}

#lesson-observation-modal .obs-status-btn {
    min-height: 34px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 12px;
    padding: 6px 4px;
    background: rgba(2, 6, 23, 0.42);
    color: var(--obs-ui-soft);
    font-size: 0.72rem;
    font-weight: 900;
    cursor: pointer;
}

#lesson-observation-modal .obs-status-btn-good.active {
    border-color: rgba(16, 185, 129, 0.78);
    background: rgba(16, 185, 129, 0.25);
    color: #bbf7d0;
}

#lesson-observation-modal .obs-status-btn-warning.active {
    border-color: rgba(245, 158, 11, 0.78);
    background: rgba(245, 158, 11, 0.25);
    color: #fde68a;
}

#lesson-observation-modal .obs-status-btn-help.active {
    border-color: rgba(239, 68, 68, 0.78);
    background: rgba(239, 68, 68, 0.25);
    color: #fecaca;
}

#lesson-observation-modal .obs-tag-more {
    opacity: 0.72;
    pointer-events: none;
}

#lesson-observation-modal .obs-note-pane {
    grid-column: 5;
    grid-row: 1;
    min-width: 0;
    overflow: hidden;
    border-left: 1px solid var(--obs-ui-line);
    background: rgba(15, 23, 42, 0.78);
    padding: 15px;
}

#lesson-observation-modal .obs-note-pane.is-collapsed {
    width: 0;
    padding: 0;
    border-left: 0;
}

#lesson-observation-modal .obs-note-empty {
    height: 100%;
    border: 1px dashed rgba(148, 163, 184, 0.25);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    color: var(--obs-ui-muted);
}

#lesson-observation-modal .obs-note-empty[hidden] {
    display: none;
}

#lesson-observation-modal .obs-note-empty > div {
    display: grid;
    gap: 7px;
}

#lesson-observation-modal .obs-note-empty-icon {
    font-size: 2rem;
}

#lesson-observation-modal .obs-note-editor {
    display: none;
    height: 100%;
    min-height: 0;
    flex-direction: column;
    gap: 11px;
}

#lesson-observation-modal .obs-note-editor.is-open {
    display: flex;
}

#lesson-observation-modal .obs-note-head {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
    padding-bottom: 10px;
}

#lesson-observation-modal .obs-note-head h3 {
    margin: 0;
    color: var(--obs-ui-text);
    font-size: 1.12rem;
}

#lesson-observation-modal .obs-note-meta,
#lesson-observation-modal .obs-note-section-title span,
#lesson-observation-modal .obs-note-count {
    color: var(--obs-ui-muted);
    font-size: 0.78rem;
}

#lesson-observation-modal .obs-note-status-line,
#lesson-observation-modal .obs-note-tags,
#lesson-observation-modal .obs-note-template-groups,
#lesson-observation-modal .obs-note-templates {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

#lesson-observation-modal .obs-note-status-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

#lesson-observation-modal .obs-note-status-buttons button,
#lesson-observation-modal .obs-note-template-group,
#lesson-observation-modal .obs-note-template {
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 14px;
    background: rgba(30, 41, 59, 0.86);
    color: var(--obs-ui-soft);
    cursor: pointer;
    font-weight: 900;
}

#lesson-observation-modal .obs-note-status-buttons button {
    padding: 12px 6px;
}

#lesson-observation-modal .obs-note-status-buttons button.active:nth-child(1) {
    border-color: rgba(16, 185, 129, 0.76);
    background: rgba(16, 185, 129, 0.24);
    color: #bbf7d0;
}

#lesson-observation-modal .obs-note-status-buttons button.active:nth-child(2) {
    border-color: rgba(245, 158, 11, 0.76);
    background: rgba(245, 158, 11, 0.24);
    color: #fde68a;
}

#lesson-observation-modal .obs-note-status-buttons button.active:nth-child(3) {
    border-color: rgba(239, 68, 68, 0.76);
    background: rgba(239, 68, 68, 0.24);
    color: #fecaca;
}

#lesson-observation-modal .obs-note-section {
    display: grid;
    gap: 8px;
}

#lesson-observation-modal .obs-note-section-title {
    display: flex;
    justify-content: space-between;
    gap: 8px;
}

#lesson-observation-modal .obs-note-template-group,
#lesson-observation-modal .obs-note-template {
    padding: 8px 10px;
    font-size: 0.78rem;
}

#lesson-observation-modal .obs-note-template-group.active {
    border-color: rgba(56, 189, 248, 0.45);
    background: rgba(56, 189, 248, 0.18);
    color: #bae6fd;
}

#lesson-observation-modal .obs-note-templates {
    max-height: 128px;
    overflow: auto;
}

#lesson-observation-modal .obs-note-template {
    text-align: left;
    line-height: 1.35;
}

#lesson-observation-modal #obs-panel-note-input {
    flex: 1;
    min-height: 160px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 16px;
    padding: 13px 14px;
    resize: none;
    background: rgba(2, 6, 23, 0.45);
    color: var(--obs-ui-text);
    line-height: 1.58;
    outline: none;
}

#lesson-observation-modal .obs-note-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

#lesson-observation-modal .obs-note-save-state {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

#lesson-observation-modal .obs-note-autosave-status {
    color: var(--obs-ui-muted);
    font-size: 0.76rem;
    font-weight: 800;
    white-space: nowrap;
}

#lesson-observation-modal .obs-note-autosave-status[data-tone="pending"] {
    color: #fde68a;
}

#lesson-observation-modal .obs-note-autosave-status[data-tone="saving"] {
    color: #bae6fd;
}

#lesson-observation-modal .obs-note-autosave-status[data-tone="saved"] {
    color: #bbf7d0;
}

#lesson-observation-modal .obs-note-autosave-status[data-tone="error"] {
    color: #fecaca;
}

#lesson-observation-modal .obs-note-foot > div {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

#lesson-observation-modal .obs-history-panel {
    position: absolute;
    right: 18px;
    top: 66px;
    z-index: 120;
    width: min(520px, calc(100vw - 36px));
    max-height: 72vh;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.26);
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

#lesson-observation-modal .obs-history-panel[hidden] {
    display: none;
}

#lesson-observation-modal .obs-history-head,
#lesson-observation-modal .obs-history-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.15);
    padding: 12px 14px;
}

#lesson-observation-modal .obs-history-actions {
    border-top: 1px solid rgba(148, 163, 184, 0.15);
    border-bottom: 0;
    justify-content: flex-end;
}

#lesson-observation-modal .obs-history-list {
    display: grid;
    gap: 8px;
    max-height: 56vh;
    overflow: auto;
    padding: 12px;
}

#lesson-observation-modal .obs-history-item {
    border: 1px solid rgba(148, 163, 184, 0.17);
    border-radius: 13px;
    padding: 10px;
    background: rgba(30, 41, 59, 0.64);
    color: var(--obs-ui-soft);
    font-size: 0.82rem;
    line-height: 1.45;
}

#lesson-observation-modal .obs-history-item p {
    margin: 4px 0 0;
    color: var(--obs-ui-muted);
}

#lesson-observation-modal .obs-nonlesson-panel {
    position: absolute;
    right: 18px;
    top: 66px;
    z-index: 130;
    width: min(560px, calc(100vw - 36px));
    max-height: 78vh;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.26);
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

#lesson-observation-modal .obs-nonlesson-panel[hidden] {
    display: none;
}

#lesson-observation-modal .obs-nonlesson-body {
    display: grid;
    gap: 12px;
    max-height: 66vh;
    overflow: auto;
    padding: 14px;
}

#lesson-observation-modal .obs-nonlesson-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 0.8fr 0.9fr;
    gap: 10px;
}

#lesson-observation-modal .obs-nonlesson-body label {
    display: grid;
    gap: 5px;
    min-width: 0;
    color: var(--obs-ui-muted);
    font-size: 0.76rem;
    font-weight: 800;
}

#lesson-observation-modal .obs-nonlesson-body input,
#lesson-observation-modal .obs-nonlesson-body select,
#lesson-observation-modal .obs-nonlesson-body textarea {
    width: 100%;
    min-width: 0;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.92);
    color: var(--obs-ui-soft);
    font: inherit;
    padding: 9px 10px;
}

#lesson-observation-modal .obs-nonlesson-body textarea {
    min-height: 112px;
    resize: vertical;
}

#lesson-observation-modal .obs-nonlesson-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

#lesson-observation-modal .obs-nonlesson-selection {
    display: flex !important;
    grid-template-columns: none !important;
    align-items: center;
    gap: 8px !important;
    color: var(--obs-ui-soft) !important;
    font-size: 0.8rem !important;
}

#lesson-observation-modal .obs-nonlesson-selection input {
    width: auto;
}

#lesson-observation-modal .obs-nonlesson-status-line {
    min-height: 18px;
    color: var(--obs-ui-muted);
    font-size: 0.78rem;
    font-weight: 800;
}

#lesson-observation-modal .obs-nonlesson-status-line[data-tone="saving"] {
    color: #bae6fd;
}

#lesson-observation-modal .obs-nonlesson-status-line[data-tone="saved"] {
    color: #bbf7d0;
}

#lesson-observation-modal .obs-nonlesson-status-line[data-tone="error"] {
    color: #fecaca;
}

@media (max-width: 1180px) {
    #lesson-observation-modal .observation-container {
        height: calc(100vh - 20px) !important;
    }

    #lesson-observation-modal .obs-body,
    #lesson-observation-modal .observation-container.class-mode .obs-body,
    #lesson-observation-modal .observation-container.review-mode .obs-body,
    #lesson-observation-modal .observation-container.note-closed .obs-body {
        grid-template-columns: 1fr;
        overflow: auto !important;
    }

    #lesson-observation-modal #obs-lesson-pane,
    #lesson-observation-modal #obs-activity-pane {
        max-height: 230px;
        border-right: 0 !important;
        border-bottom: 1px solid var(--obs-ui-line);
    }

    #lesson-observation-modal #obs-layout-divider,
    #lesson-observation-modal #obs-note-layout-divider {
        display: none !important;
    }

    #lesson-observation-modal .obs-main-pane {
        min-height: 580px;
    }

    #lesson-observation-modal .obs-note-pane {
        position: fixed;
        inset: auto 0 0 0;
        z-index: 160;
        max-height: 82vh;
        border: 1px solid rgba(148, 163, 184, 0.26);
        border-radius: 20px 20px 0 0;
        box-shadow: 0 -18px 50px rgba(0, 0, 0, 0.5);
        background: #111827;
    }

    #lesson-observation-modal .obs-note-pane.is-collapsed {
        display: none;
    }
}

@media (max-width: 760px) {
    #lesson-observation-modal .obs-header {
        align-items: flex-start !important;
        flex-direction: column;
    }

    #lesson-observation-modal .obs-header-actions,
    #lesson-observation-modal .obs-student-tools,
    #lesson-observation-modal .obs-main-toolbar {
        width: 100%;
    }

    #lesson-observation-modal .obs-student-tools {
        align-items: stretch;
        flex-direction: column;
    }

    #lesson-observation-modal .obs-student-filterbar input,
    #lesson-observation-modal .obs-student-filterbar select {
        flex: 1;
        min-width: 0;
    }

    #lesson-observation-modal #obs-student-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }

    #lesson-observation-modal .obs-stats-strip {
        grid-template-columns: repeat(2, 1fr);
    }

    #lesson-observation-modal .obs-status-buttons {
        grid-template-columns: 1fr;
    }

    #lesson-observation-modal .obs-nonlesson-grid {
        grid-template-columns: 1fr;
    }
}