/**
 * SPA Gradebook Manager - Responsive Styles
 * @package local_gradebookmanager
 */

/* =========================================================
   ROOT APP CONTAINER
   ========================================================= */
.local-gradebookmanager-app-container {
    width: 100%;
    overflow-x: hidden;
}

/* =========================================================
   HEADER TOOLBAR – two-row responsive layout
   ========================================================= */
.gbm-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #dee2e6;
}

.gbm-header-title {
    flex: 1 1 220px;
    min-width: 0;
}
.gbm-header-title h4 {
    margin-bottom: 0;
    font-size: clamp(1rem, 2.2vw, 1.4rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Toolbar wraps naturally: creation | io | actions */
.gbm-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}
.gbm-toolbar-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
}
.gbm-toolbar-divider {
    width: 1px;
    height: 28px;
    background: #dee2e6;
    margin: 0 4px;
}

/* Shrink button labels on small screens */
@media (max-width: 768px) {
    .gbm-btn-label { display: none; }
    .gbm-toolbar-divider { display: none; }
    .gbm-toolbar { width: 100%; }
    .gbm-header { flex-direction: column; }
}
@media (max-width: 576px) {
    .gbm-toolbar-group .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
}

/* =========================================================
   SPREADSHEET HEADER – aligned with node row flex layout
   ========================================================= */
.gbm-sheet-header {
    display: flex;
    align-items: center;
    background: #f8f9fa;
    font-weight: 700;
    padding: 8px 12px;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem 0.375rem 0 0;
    overflow: hidden;
}

/* Offset to visually align with checkbox + drag-handle (≈ 20px checkbox + 12px gap + 20px handle + 12px gap = ~64px) */
.gbm-sheet-header::before {
    content: '';
    flex: 0 0 64px;
    min-width: 64px;
}

.gbm-col-name  { flex: 1 1 0; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.gbm-col-grade { flex: 0 0 110px; width: 110px; text-align: right; padding-right: 8px; }
.gbm-col-weight{ flex: 0 0 110px; width: 110px; text-align: right; padding-right: 8px; }
.gbm-col-actions { flex: 0 0 auto; text-align: right; white-space: nowrap; min-width: 100px; }

@media (max-width: 768px) {
    .gbm-col-grade,
    .gbm-col-weight { display: none !important; }
    .gbm-sheet-header::before { flex: 0 0 54px; min-width: 54px; }
}

/* =========================================================
   NODE ROWS – proper flex layout, no percentage overflow
   ========================================================= */
.gbm-node-row {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 6px 12px 6px 12px;
    box-sizing: border-box;
    overflow: hidden;
}

/* Name column grows to consume all remaining space */
.gbm-node-row .gbm-col-name {
    flex: 1 1 0;
    min-width: 0;
    overflow: hidden;
}
.gbm-node-row .gbm-col-name .fw-bold {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 4px;
}

/* Grade / Weight columns: fixed width, hidden on small screens */
.gbm-node-row .gbm-col-grade,
.gbm-node-row .gbm-col-weight {
    flex: 0 0 110px;
    width: 110px;
    min-width: 0;
    text-align: right;
    padding-right: 8px;
}

/* Actions column: fixed width, never shrink */
.gbm-node-row .gbm-col-actions {
    flex: 0 0 auto;
    white-space: nowrap;
    text-align: right;
    padding-left: 8px;
}

@media (max-width: 768px) {
    .gbm-node-row .gbm-col-grade,
    .gbm-node-row .gbm-col-weight { display: none !important; }
}

/* =========================================================
   ACTION BUTTONS – compact icon buttons
   ========================================================= */
.gbm-action-col .btn {
    padding: 0.2rem 0.4rem;
    font-size: 0.8rem;
    line-height: 1.2;
}
.gbm-action-col .btn + .btn { margin-left: 2px; }

/* =========================================================
   BATCH BAR
   ========================================================= */
#gbm-batch-bar {
    flex-wrap: wrap;
    gap: 8px;
    border-radius: 8px;
}
#gbm-batch-bar .d-flex { flex-wrap: wrap; gap: 8px; }
#gbm-batch-target { min-width: 150px; max-width: 260px; }

/* =========================================================
   DRAG VISUAL INDICATORS
   ========================================================= */
.gbm-drag-before  { border-top: 3px solid #0d6efd !important; }
.gbm-drag-after   { border-bottom: 3px solid #0d6efd !important; }
.gbm-drag-inside  { background-color: #cfe2ff !important; }
.gbm-dragging     { opacity: 0.45; }

/* =========================================================
   MODALS – ensure full height on mobile
   ========================================================= */
@media (max-width: 576px) {
    .modal-dialog { margin: 0.5rem; }
    .modal-dialog-scrollable .modal-body { max-height: calc(100vh - 160px); }
}

/* =========================================================
   INLINE EDIT INPUT
   ========================================================= */
.gbm-editable {
    cursor: text;
    border-bottom: 1px dashed transparent;
    transition: border-color 0.15s;
    min-width: 20px;
    display: inline-block;
}
.gbm-editable:hover { border-bottom-color: #0d6efd; }
.gbm-editable input.form-control {
    display: inline-block;
    width: auto;
    min-width: 80px;
    padding: 1px 4px;
    font-size: inherit;
    height: auto;
}

/* =========================================================
   UNSAVED BADGE PULSE ANIMATION
   ========================================================= */
#gbm-unsaved-warning {
    animation: gbm-pulse 1.8s ease-in-out infinite;
}
@keyframes gbm-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.55; }
}
/* =========================================================
   TOTALS & CATEGORY HIGHLIGHTS
   ========================================================= */
.gbm-total-column {
    background-color: #f0f4ff !important;
    border-left: 2px solid #d1d9e6 !important;
    border-right: 2px solid #d1d9e6 !important;
}

.gbm-total-badge {
    font-size: 0.85em;
    padding: 0.25rem 0.6rem;
    border-radius: 50rem;
    font-weight: 700;
}

/* Zen Mode Gradients */
.gbm-zen-cat-card {
    background: linear-gradient(135deg, #4b5259 0%, #6c757d 100%) !important;
    color: #ffffff !important;
}

.gbm-zen-course-card {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%) !important;
    color: #ffffff !important;
}

.gbm-zen-cat-card .text-muted,
.gbm-zen-course-card .text-muted,
.gbm-zen-cat-card .text-secondary,
.gbm-zen-course-card .text-secondary {
    color: rgba(255, 255, 255, 0.8) !important;
}

.gbm-zen-cat-card .form-control,
.gbm-zen-course-card .form-control {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
}

.gbm-zen-cat-card .form-control:focus,
.gbm-zen-course-card .form-control:focus {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.1);
}

.gbm-zen-cat-card .btn-outline-secondary,
.gbm-zen-course-card .btn-outline-secondary {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.5);
}

.gbm-zen-cat-card .btn-outline-secondary:hover,
.gbm-zen-course-card .btn-outline-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}