/* --- Timetable Tab --- */
#tab-timetable {
    padding: 0;
    gap: 1rem;
    position: relative;
}

/* Sidebar (Timetable List) */
#timetable-list-sidebar .view-header {
    padding: 0 0 0.5rem 0;
    margin-bottom: 1rem;
}

#timetable-list-sidebar .view-header h3 {
    font-size: 1.1rem;
}

#timetable-list-sidebar .memo-list-item {
    padding: 0.8rem 1rem;
    font-weight: 700;
}

/* Main Content (Selected Timetable) */
#timetable-main-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-height: 575px;
    overflow: auto;
}

#timetable-main-content .view-header {
    padding: 0;
    border-bottom: none;
    align-items: flex-start;
    flex-wrap: wrap;
}
#timetable-main-content .view-header h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 1.5rem;
}

.timetable-validity {
    margin-left: 0;
    padding: 0.5rem 0;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.timetable-actions {
    margin-left: auto;
    align-self: flex-start;
}

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    background-color: var(--card-bg);
    flex-grow: 1; 
}

.timetable-table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.8rem;
    table-layout: fixed;
}

.timetable-table th,
.timetable-table td {
    border: 1px solid var(--border-color);
    padding: 0.4rem;
    text-align: center;
}

.timetable-table th {
    background-color: var(--secondary-bg);
    font-size: 0.75rem;
}

.timetable-table td {
    height: 50px;
    cursor: pointer;
    vertical-align: middle;
    transition: background-color 0.2s, color 0.2s;
}

.timetable-table td:hover {
    background-color: var(--secondary-bg);
}

.timetable-table .period-cell {
    font-weight: bold;
    color: var(--secondary-color);
    font-size: 0.7rem;
    cursor: default;
}

.subject-name, .classroom-name, .teacher-name {
    word-break: break-all;
    line-height: 1.2;
}
.subject-name {
    font-weight: bold;
}
.classroom-name {
    font-size: 0.75rem;
    color: var(--secondary-color);
}
.teacher-name {
    font-size: 0.75rem;
    color: var(--info-color);
    font-weight: bold;
    margin-top: 2px;
}

.timetable-table td.cell-selected {
    outline: 3px solid var(--primary-color);
    outline-offset: -3px;
    z-index: 10;
}

.timetable-table td.cell-dragging {
    background-color: var(--primary-color) !important;
    opacity: 0.5;
}

/* Floating Info Panel */
.timetable-info-panel {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 2vh;
    left: 10%;
    /* transform: translateX(-50%); */
    width: 500px;
    max-width: 95vw;
    max-height: 88vh;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    z-index: 1001;
    animation: fadeInContent 0.3s;
}


.timetable-info-panel.show {
    display: flex;
}

.timetable-info-panel .view-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    flex-shrink: 0;
}

.timetable-info-panel .view-header h3 {
    font-size: 1.2rem;
}

.timetable-info-panel .close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: none;
    font-size: 2.5rem;
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    color: var(--secondary-color);
    padding: 0.5rem;
}

.timetable-info-panel .close-btn:hover {
    color: var(--text-color);
}

.timetable-info-panel .panel-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex-grow: 1;
}

.timetable-info-panel .panel-body h3 {
    text-align: center;
    margin-bottom: 55px;
    color: #333333;
}

.timetable-info-panel .modal-actions {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--secondary-bg);
    flex-shrink: 0;
}

/* View Mode */
.cell-info-display {
    display: grid;
    gap: 1.5rem 1.5rem;
    grid-template-columns: max-content 1fr;
}
.cell-info-display p {
    margin: 0;
    display: contents;
}
.cell-info-display strong {
    font-weight: 700;
    color: var(--secondary-color);
    grid-column: 1 / 2;
    text-align: right;
}
.cell-info-display span {
    font-weight: 500;
    grid-column: 2 / 3;
    white-space: pre-wrap;
    word-break: break-all;
}
#timetable-cell-edit-btn {
    width: 100%;
}
.cell-info-display-memo {
    margin-top: 2.5rem;
}
.cell-info-display-memo label {
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    display: block;
}
.cell-info-display-memo textarea {
    width: 100%;
    min-height: 100px;
    resize: vertical;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    background-color: var(--input-bg);
    color: var(--input-text);
    font-family: inherit;
}


/* Edit Mode */
#cell-editor-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}


#cell-editor-form h3 {
    text-align: center;
    margin-bottom: 24px;
    color: #333333;
}


#cell-editor-form input[type='text'] {
    width: 75%;
    height: 35px;
    border: 1px solid #dddddd;
    border-radius: 8px;
    padding: 12px 15px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}


#cell-editor-form input[type='email'] {
    width: 75%;
    height: 35px;
    border: 1px solid #dddddd;
    border-radius: 8px;
    padding: 12px 15px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}




#cell-editor-form p {
    margin: 0 0 0.5rem 0;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-align: center;
}
#cell-editor-form .form-group {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

#cell-editor-form label {
    flex-basis: 80px;
    flex-shrink: 0;
    font-weight: 700;
}
#timetable-unmerge-btn {
    background-color: var(--secondary-color);
}
#cancel-cell-edit-btn {
    background-color: transparent;
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
    margin-left: auto;
}

/* Color Palette */
.color-palette-container {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
}
.color-palette-container label {
    flex-basis: auto;
}
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 4px;
}
.color-palette .color-swatch {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}
.color-palette .color-swatch:hover {
    transform: scale(1.2);
    border-color: var(--primary-color);
}

/* Modal form adjustments */
#timetable-edit-form .modal-actions {
    justify-content: flex-end;
}
#timetable-edit-form #cancel-timetable-edit,
#timetable-edit-form #timetable-clear-btn {
    margin-right: auto;
    background-color: var(--secondary-color);
}

#timetable-edit-form #timetable-delete-btn {
    background-color: var(--danger-color);
}

#save-timetable-structure-btn {
    background-color: var(--success-color);
}