/* ================================================================
   AiGinex Routine Manager — Admin UI (v2.4.0)
   ================================================================ */

:root {
    --rt-bg: #f6f8fb;
    --rt-surface: #ffffff;
    --rt-border: #e4e8ef;
    --rt-border-strong: #d1d7e0;
    --rt-text: #1f2937;
    --rt-text-muted: #64748b;
    --rt-primary: #2563eb;
    --rt-primary-hover: #1d4ed8;
    --rt-primary-soft: #eff6ff;
    --rt-danger: #dc2626;
    --rt-danger-hover: #b91c1c;
    --rt-danger-soft: #fef2f2;
    --rt-success: #16a34a;
    --rt-warning: #d97706;
    --rt-warning-soft: #fef3c7;
    --rt-radius: 10px;
    --rt-radius-sm: 6px;
    --rt-shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);
    --rt-shadow-md: 0 4px 12px rgba(15, 23, 42, .06);
    --rt-shadow-lg: 0 10px 30px rgba(15, 23, 42, .12);
    --rt-font: system-ui, -apple-system, "Segoe UI", "SolaimanLipi", "Kalpurush", Roboto, sans-serif;
}

.aiginex-rt-wrap,
.aiginex-rt-wrap * { box-sizing: border-box; }

.aiginex-rt-wrap {
    font-family: var(--rt-font);
    color: var(--rt-text);
    background: var(--rt-bg);
    padding: 20px;
    border-radius: var(--rt-radius);
    line-height: 1.5;
}

.aiginex-rt-header { margin-bottom: 20px; }
.aiginex-rt-title {
    font-size: 26px; font-weight: 700;
    margin: 0 0 4px; color: var(--rt-text);
}
.aiginex-rt-subtitle {
    color: var(--rt-text-muted); margin: 0; font-size: 14px;
}

/* ---------- Tabs ---------- */
.aiginex-rt-tabs {
    display: flex; flex-wrap: wrap; gap: 6px;
    padding: 6px; background: var(--rt-surface);
    border: 1px solid var(--rt-border); border-radius: var(--rt-radius);
    margin-bottom: 20px; box-shadow: var(--rt-shadow-sm);
}
.aiginex-rt-tab {
    flex: 1 1 auto; min-width: 120px;
    padding: 10px 14px;
    background: transparent; border: none;
    border-radius: var(--rt-radius-sm);
    color: var(--rt-text-muted); font-weight: 500;
    cursor: pointer; font-size: 14px;
    transition: background .15s, color .15s;
    font-family: inherit;
}
.aiginex-rt-tab:hover { background: var(--rt-primary-soft); color: var(--rt-primary); }
.aiginex-rt-tab.is-active {
    background: var(--rt-primary); color: #fff;
    box-shadow: var(--rt-shadow-sm);
}

/* ---------- Panels ---------- */
.aiginex-rt-panel { display: none; animation: rt-fade-in .2s ease; }
.aiginex-rt-panel.is-active { display: block; }
@keyframes rt-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Cards ---------- */
.aiginex-rt-card {
    background: var(--rt-surface);
    border: 1px solid var(--rt-border);
    border-radius: var(--rt-radius);
    box-shadow: var(--rt-shadow-sm);
    overflow: hidden;
}
.aiginex-rt-card-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--rt-border);
    background: #fafbfc;
}
.aiginex-rt-card-header h2 {
    margin: 0; font-size: 16px; font-weight: 600; color: var(--rt-text);
}
.aiginex-rt-card-body { padding: 18px; }

.aiginex-rt-two-col {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
}
@media (max-width: 900px) {
    .aiginex-rt-two-col { grid-template-columns: 1fr; }
    .aiginex-rt-tab { min-width: 100px; font-size: 13px; }
}

/* ---------- Forms ---------- */
.aiginex-rt-form { display: flex; flex-direction: column; gap: 14px; }
.aiginex-rt-field { display: flex; flex-direction: column; gap: 6px; }
.aiginex-rt-field-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.aiginex-rt-field label { font-size: 13px; font-weight: 500; color: var(--rt-text); }
.aiginex-rt-field input[type="text"],
.aiginex-rt-field input[type="number"],
.aiginex-rt-field input[type="time"],
.aiginex-rt-field select {
    width: 100%; padding: 9px 11px;
    border: 1px solid var(--rt-border-strong);
    border-radius: var(--rt-radius-sm);
    font-size: 14px; font-family: inherit;
    background: #fff; color: var(--rt-text);
    transition: border-color .15s, box-shadow .15s;
}
.aiginex-rt-field input:focus,
.aiginex-rt-field select:focus {
    outline: none; border-color: var(--rt-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.aiginex-rt-field input:invalid:not(:placeholder-shown) {
    border-color: var(--rt-danger);
}
.aiginex-rt-hint { font-size: 12px; color: var(--rt-text-muted); }
.aiginex-rt-checkbox {
    display: flex !important; flex-direction: row !important;
    align-items: center; gap: 8px; cursor: pointer;
}
.aiginex-rt-checkbox input { width: 16px; height: 16px; margin: 0; }
.aiginex-rt-form-actions { display: flex; gap: 8px; margin-top: 4px; }

/* ---------- Buttons ---------- */
.aiginex-rt-btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 9px 16px; font-size: 14px; font-weight: 500;
    border-radius: var(--rt-radius-sm); border: 1px solid transparent;
    cursor: pointer; font-family: inherit; line-height: 1.3;
    transition: background .15s, border-color .15s, color .15s, transform .05s;
}
.aiginex-rt-btn:active { transform: translateY(1px); }
.aiginex-rt-btn-primary { background: var(--rt-primary); color: #fff; }
.aiginex-rt-btn-primary:hover { background: var(--rt-primary-hover); }
.aiginex-rt-btn-ghost {
    background: #fff; border-color: var(--rt-border-strong); color: var(--rt-text);
}
.aiginex-rt-btn-ghost:hover { background: #f1f5f9; }
.aiginex-rt-btn-danger { background: var(--rt-danger); color: #fff; }
.aiginex-rt-btn-danger:hover { background: var(--rt-danger-hover); }

.aiginex-rt-icon-btn {
    width: 30px; height: 30px; padding: 0;
    border-radius: 6px; border: 1px solid var(--rt-border);
    background: #fff; color: var(--rt-text-muted);
    cursor: pointer; font-size: 14px; line-height: 1;
    transition: background .15s, color .15s, border-color .15s;
}
.aiginex-rt-icon-btn:hover {
    background: var(--rt-primary-soft); color: var(--rt-primary); border-color: var(--rt-primary);
}
.aiginex-rt-icon-btn-danger:hover {
    background: var(--rt-danger-soft); color: var(--rt-danger); border-color: var(--rt-danger);
}

/* ---------- Lists ---------- */
.aiginex-rt-list {
    list-style: none; padding: 0; margin: 0;
    display: flex; flex-direction: column; gap: 6px;
}
.aiginex-rt-list-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 12px; background: #fff;
    border: 1px solid var(--rt-border);
    border-radius: var(--rt-radius-sm); gap: 12px;
}
.aiginex-rt-list-item.is-legacy {
    background: var(--rt-warning-soft); border-color: #fde68a;
}
.aiginex-rt-list-body {
    min-width: 0; flex: 1;
    display: flex; flex-direction: column; gap: 2px;
}
.aiginex-rt-list-title {
    font-weight: 500; font-size: 14px;
    color: var(--rt-text); word-break: break-word;
}
.aiginex-rt-list-meta { font-size: 12px; color: var(--rt-text-muted); }
.aiginex-rt-list-actions { display: flex; gap: 4px; flex-shrink: 0; }

.aiginex-rt-sublist {
    list-style: none; padding: 0 0 0 16px; margin: 6px 0 0;
    display: flex; flex-direction: column; gap: 4px;
}
.aiginex-rt-list-nested > .aiginex-rt-list-item { flex-wrap: wrap; }

.aiginex-rt-group-heading {
    font-size: 13px; font-weight: 600;
    color: var(--rt-text-muted);
    text-transform: uppercase; letter-spacing: .5px;
    margin: 16px 0 8px; padding-bottom: 6px;
    border-bottom: 1px solid var(--rt-border);
}
.aiginex-rt-group-heading:first-child { margin-top: 0; }
.aiginex-rt-group-legacy { color: var(--rt-warning); }

.aiginex-rt-legacy-banner {
    padding: 10px 12px;
    background: var(--rt-warning-soft);
    border: 1px solid #fde68a;
    border-radius: var(--rt-radius-sm);
    color: #92400e; font-size: 13px;
    margin-bottom: 12px;
}

.aiginex-rt-empty {
    padding: 24px; text-align: center;
    color: var(--rt-text-muted); background: #fafbfc;
    border: 1px dashed var(--rt-border-strong);
    border-radius: var(--rt-radius-sm); font-size: 14px;
}

/* ---------- Badges & chips ---------- */
.aiginex-rt-badge {
    display: inline-block; padding: 2px 8px;
    border-radius: 12px; font-size: 11px;
    font-weight: 500; margin-left: 4px;
}
.aiginex-rt-badge-break { background: #f3f4f6; color: #4b5563; }
.aiginex-rt-badge-warn  { background: var(--rt-warning-soft); color: #92400e; }

.aiginex-rt-chip {
    display: inline-block; padding: 4px 10px;
    background: var(--rt-primary-soft); color: var(--rt-primary);
    border-radius: 16px; font-size: 12px;
    font-weight: 500; margin-right: 6px;
}

/* ---------- Routine Grid ---------- */
.aiginex-rt-grid-controls {
    display: flex; flex-wrap: wrap; gap: 12px;
    align-items: end; margin-bottom: 16px;
}
.aiginex-rt-grid-controls .aiginex-rt-field { flex: 1 1 200px; }
.aiginex-rt-grid-wrapper-outer { margin-top: 8px; }
.aiginex-rt-grid-meta { margin-bottom: 12px; }

.aiginex-rt-grid-scroll {
    overflow-x: auto;
    border: 1px solid var(--rt-border);
    border-radius: var(--rt-radius-sm); background: #fff;
}
.aiginex-rt-grid-table {
    width: 100%; border-collapse: collapse; font-size: 13px;
}
.aiginex-rt-grid-table th,
.aiginex-rt-grid-table td {
    padding: 8px; border: 1px solid var(--rt-border);
    text-align: left; vertical-align: top;
}
.aiginex-rt-grid-table thead th {
    background: #f1f5f9; font-weight: 600;
    position: sticky; top: 0; z-index: 1;
}
.aiginex-rt-grid-table th small {
    display: block; color: var(--rt-text-muted);
    font-weight: 400; font-size: 11px; margin-top: 2px;
}
.aiginex-rt-day-cell {
    background: #f8fafc; font-weight: 600;
    white-space: nowrap; position: sticky; left: 0; z-index: 1;
}
.aiginex-rt-break-cell {
    background: #fef3c7; color: #92400e;
    font-weight: 500; text-align: center; font-style: italic;
}
.aiginex-rt-slot-cell { min-width: 150px; }
.aiginex-rt-slot-cell select {
    width: 100%; padding: 5px 7px; font-size: 12px;
    border: 1px solid var(--rt-border); border-radius: 4px;
    background: #fff; margin-bottom: 4px;
    font-family: inherit;
}
.aiginex-rt-slot-cell select:last-child { margin-bottom: 0; }
.aiginex-rt-slot-cell select:focus {
    outline: none; border-color: var(--rt-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, .15);
}
.aiginex-rt-teacher-conflict {
    border-color: var(--rt-danger) !important;
    background: var(--rt-danger-soft) !important;
}
.aiginex-rt-red-warning {
    border: 2px solid var(--rt-danger) !important;
    background: var(--rt-danger-soft) !important;
}
.aiginex-rt-grid-actions {
    margin-top: 16px; display: flex; justify-content: flex-end;
}

/* ---------- Toasts ---------- */
.aiginex-rt-toast-container {
    position: fixed; bottom: 20px; right: 20px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 99999; pointer-events: none;
}
.aiginex-rt-toast {
    min-width: 240px; max-width: 360px;
    padding: 12px 16px; background: #1f2937; color: #fff;
    border-radius: var(--rt-radius-sm);
    box-shadow: var(--rt-shadow-lg);
    font-size: 14px; pointer-events: auto;
    animation: rt-toast-in .25s ease;
}
.aiginex-rt-toast.is-success { background: var(--rt-success); }
.aiginex-rt-toast.is-error   { background: var(--rt-danger); }
.aiginex-rt-toast.is-leaving { animation: rt-toast-out .2s ease forwards; }

@keyframes rt-toast-in {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes rt-toast-out {
    to { opacity: 0; transform: translateX(20px); }
}

/* ---------- Modal ---------- */
.aiginex-rt-modal {
    position: fixed; inset: 0; z-index: 99998;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
}
.aiginex-rt-modal[hidden] { display: none; }
.aiginex-rt-modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(15, 23, 42, .55);
    backdrop-filter: blur(2px);
}
.aiginex-rt-modal-card {
    position: relative; background: #fff;
    padding: 24px; border-radius: var(--rt-radius);
    box-shadow: var(--rt-shadow-lg);
    max-width: 440px; width: 100%;
    animation: rt-fade-in .2s;
}
.aiginex-rt-modal-card h3 { margin: 0 0 8px; font-size: 18px; }
.aiginex-rt-modal-card p {
    margin: 0 0 20px; color: var(--rt-text-muted);
}
.aiginex-rt-modal-actions {
    display: flex; justify-content: flex-end; gap: 8px;
}

/* =========================================
   Teacher Class Statistics Tab
   ========================================= */
.aiginex-rt-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 10px;
    margin-bottom: 30px;
}
.aiginex-rt-stat-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.aiginex-rt-stat-card.block-teacher {
    border-left: 4px solid #0073aa;
    background-color: #f4faff;
}
.aiginex-rt-stat-card .t-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.aiginex-rt-stat-card .t-name {
    font-weight: 600;
    color: #333;
}
.aiginex-rt-stat-card .t-details {
    font-size: 11px;
    color: #666;
    margin-top: 2px;
    line-height: 1.3;
}
.aiginex-rt-stat-card .t-count {
    background: #0073aa;
    color: #fff;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: bold;
    white-space: nowrap;
    margin-left: 10px;
}
.aiginex-rt-teacher-img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 12px;
    border: 1px solid #ddd;
    background: #f0f0f0;
}
.aiginex-rt-section-header {
    background: #f1f1f1;
    padding: 10px;
    border-left: 5px solid #0073aa;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.aiginex-rt-separator {
    border-top: 2px dashed #ccc;
    margin: 30px 0;
}
@media screen and (max-width: 768px) {
    .aiginex-rt-stats-grid { grid-template-columns: 1fr; }
}

/* ---- বিষয় tab: class filter bar ---- */
.aiginex-rt-subject-filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 10px 14px;
    background: #f0f7ff;
    border: 1px solid #c7dff5;
    border-radius: 6px;
    margin-bottom: 14px;
}
.aiginex-rt-subject-filter-bar label {
    font-weight: 600;
    color: #1a5276;
    font-size: 13px;
    white-space: nowrap;
}
.aiginex-rt-subject-filter-bar select {
    padding: 6px 10px;
    border: 1px solid #aac9e8;
    border-radius: 4px;
    background: #fff;
    font-size: 13px;
    color: #222;
    min-width: 160px;
    cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
}
.aiginex-rt-subject-filter-bar select:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 0 2px rgba(0,115,170,.18);
}
.aiginex-rt-filter-count {
    font-size: 12px;
    color: #fff;
    background: #0073aa;
    padding: 2px 10px;
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: .3px;
}
.aiginex-rt-filter-empty {
    padding: 18px;
    text-align: center;
    color: #888;
    font-style: italic;
}