/* =============================================================
   نظام لونين إلزامي: رمادي داكن (#2b2b2b) + أبيض (#fff)
   خط: Tajawal (Google Fonts) — RTL — Responsive
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@300;400;500;700;800&display=swap');

/* ── المتغيرات ── */
:root {
    --dark:       #2b2b2b;
    --dark-2:     #1e1e1e;
    --dark-hover: #3a3a3a;
    --white:      #fff;
    --black:      #000;
    --gray-bg:    #f4f4f4;
    --border:     #d0d0d0;
    --sidebar-w:  240px;
    --header-h:   60px;
    --radius:     6px;
    --shadow:     0 2px 8px rgba(0,0,0,.12);
    --font:       'Tajawal', 'Segoe UI', Tahoma, Arial, sans-serif;
}

/* ── إعادة ضبط ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font);
    direction: rtl;
    text-align: right;
    background-color: var(--gray-bg);
    color: var(--black);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.65;
}

a { color: var(--black); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .75; }

/* ── ترويسة ── */
.app-header {
    background-color: var(--dark);
    color: var(--white);
    height: var(--header-h);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.app-header__inner {
    padding: 0 1rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.app-brand {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 800;
    white-space: nowrap;
}

/* زر Hamburger */
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: .4rem;
    flex-direction: column;
    gap: 5px;
    flex-shrink: 0;
}

.sidebar-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--white);
    border-radius: 2px;
    transition: all .3s;
}

.app-nav {
    display: flex;
    align-items: center;
    gap: .75rem;
    flex-wrap: wrap;
}

.app-nav a { color: var(--white); font-weight: 500; font-size: .92rem; }
.app-nav__user {
    color: var(--white);
    font-weight: 700;
    font-size: .88rem;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.app-nav__logout { margin: 0; }

/* ── هيكل الصفحة ── */
.app-body {
    display: flex;
    flex: 1;
    width: 100%;
    position: relative;
}

/* ── القائمة الجانبية ── */
.app-sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    background-color: var(--dark);
    min-height: calc(100vh - var(--header-h) - 46px);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    transition: transform .3s ease;
}

.sidebar-title {
    padding: .9rem 1.25rem .6rem;
    color: rgba(255,255,255,.55);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--dark-hover);
    margin-bottom: .25rem;
}

.app-sidebar__item {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .7rem 1.25rem;
    color: rgba(255,255,255,.82);
    font-size: .92rem;
    border-right: 3px solid transparent;
    transition: background .2s, border-color .2s;
}

.app-sidebar__item:hover {
    background-color: var(--dark-hover);
    color: var(--white);
    border-right-color: var(--white);
    opacity: 1;
    text-decoration: none;
}

.app-sidebar__item--active {
    background-color: var(--dark-hover);
    color: var(--white);
    font-weight: 700;
    border-right-color: var(--white);
}

.sidebar-divider {
    height: 1px;
    background: var(--dark-hover);
    margin: .4rem .9rem;
}

/* Overlay للجوال */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 98;
}

/* ── محتوى الصفحة ── */
.app-content {
    flex: 1;
    padding: 1.5rem;
    background-color: var(--gray-bg);
    min-width: 0;
    width: 100%;
}

/* صفحة الرئيسية (بدون sidebar) */
.app-main {
    flex: 1;
    width: 100%;
    padding: 1.5rem 1rem;
}

/* ── التذييل ── */
.app-footer {
    background-color: var(--dark);
    color: rgba(255,255,255,.75);
    text-align: center;
    padding: .75rem 1rem;
    font-size: .85rem;
}

/* ── العناوين ── */
h1 { font-size: 1.5rem; font-weight: 800; margin-bottom: .75rem; color: var(--black); }
h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: .6rem; color: var(--black); }
h3 { font-size: 1rem; font-weight: 700; color: var(--black); }

/* ── البطاقات ── */
.card {
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.card--dark {
    background-color: var(--dark);
    color: var(--white);
    border-color: var(--dark);
}

.card--dark h1, .card--dark h2, .card--dark h3,
.card--dark a, .card--dark p { color: var(--white); }

.card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: .75rem;
}

/* ── شبكة الأدوار / الإحصائيات ── */
.role-grid,
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.role-grid .card, .stats-grid .card {
    text-align: center;
    transition: box-shadow .2s;
}

.role-grid .card:hover, .stats-grid .card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.1); }
.role-grid .card h3 { margin-bottom: .5rem; font-size: .98rem; }
.role-grid .card p { font-size: .85rem; color: #555; margin-bottom: .75rem; }

.stat-number { font-size: 2rem; font-weight: 800; line-height: 1.1; }
.stat-sub { font-size: .82rem; color: #666; margin-top: .25rem; }

/* ── الأزرار ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .5rem 1.1rem;
    border-radius: var(--radius);
    border: 1.5px solid var(--dark);
    cursor: pointer;
    font-family: var(--font);
    font-size: .9rem;
    font-weight: 600;
    transition: background .2s, opacity .2s;
    white-space: nowrap;
    text-decoration: none;
}

.btn-dark { background-color: var(--dark); color: var(--white); }
.btn-dark:hover { background-color: var(--dark-2); color: var(--white); opacity: 1; text-decoration: none; }

.btn-light { background-color: var(--white); color: var(--dark); }
.btn-light:hover { background-color: var(--gray-bg); color: var(--dark); opacity: 1; text-decoration: none; }

.btn-sm { padding: .3rem .75rem; font-size: .82rem; }
.btn-block { width: 100%; }

/* ── الجداول ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 1rem; }

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    font-size: .9rem;
}

th, td {
    border-bottom: 1px solid var(--border);
    padding: .65rem .85rem;
    text-align: right;
    white-space: nowrap;
}

thead th {
    background-color: var(--dark);
    color: var(--white);
    font-weight: 700;
    font-size: .85rem;
}

tbody tr:hover { background-color: #fafafa; }
tbody tr:last-child td { border-bottom: none; }

/* ── النماذج ── */
.form-group { margin-bottom: 1rem; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.checkbox-group {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: .75rem;
    max-height: 200px;
    overflow-y: auto;
    background: var(--gray-bg);
}

label {
    display: block;
    font-weight: 600;
    font-size: .9rem;
    margin-bottom: .35rem;
    color: var(--dark);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="datetime-local"],
input[type="search"],
input:not([type]),
select,
textarea {
    width: 100%;
    padding: .55rem .75rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--white);
    color: var(--black);
    font-family: var(--font);
    font-size: .92rem;
    transition: border-color .2s;
    outline: none;
}

input:focus, select:focus, textarea:focus { border-color: var(--dark); }
textarea { resize: vertical; min-height: 80px; }

.form-check {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: .5rem;
}

.form-check label { margin-bottom: 0; font-weight: 500; }
.form-check input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; }

.form-actions { display: flex; gap: .75rem; margin-top: 1.25rem; flex-wrap: wrap; }

.field-validation-error {
    display: block;
    color: var(--dark);
    font-size: .82rem;
    font-weight: 600;
    margin-top: .2rem;
}

.validation-summary-errors {
    background: var(--gray-bg);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: .75rem 1rem;
    margin-bottom: 1rem;
    font-size: .88rem;
}

/* ── صفحة تسجيل الدخول ── */
.login-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.login-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 420px;
}

.login-title {
    text-align: center;
    margin-bottom: .25rem;
    font-size: 1.5rem;
    font-weight: 800;
}

.login-subtitle {
    text-align: center;
    color: #555;
    font-size: .9rem;
    margin-bottom: 1.75rem;
}

.btn-block { width: 100%; }

/* ── الترقيم ── */
.pagination { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem; }
.pagination .btn { min-width: 36px; padding: .4rem .6rem; }

/* ── رسائل ── */
.alert {
    border: 1.5px solid var(--dark);
    border-radius: var(--radius);
    padding: .85rem 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: .9rem;
    background: var(--white);
}

/* ── Responsive ── */

/* Tablet ≤ 900px */
@media (max-width: 900px) {
    .sidebar-toggle { display: flex; }

    .app-sidebar {
        position: fixed;
        top: var(--header-h);
        right: 0;
        height: calc(100vh - var(--header-h));
        z-index: 99;
        transform: translateX(110%);
        box-shadow: var(--shadow);
    }

    .app-sidebar.open { transform: translateX(0); }
    .sidebar-overlay.visible { display: block; }
    .app-content { padding: 1rem; }
    .form-row, .form-row-3 { grid-template-columns: 1fr 1fr; }
}

/* Mobile ≤ 600px */
@media (max-width: 600px) {
    :root { --header-h: 56px; }
    .app-brand { font-size: .85rem; }
    .app-nav__user { display: none; }
    h1 { font-size: 1.15rem; }
    h2 { font-size: 1rem; }
    .card { padding: .85rem; }
    .login-card { padding: 1.5rem 1rem; }
    table { font-size: .78rem; }
    th, td { padding: .4rem .5rem; }
    .role-grid, .stats-grid { grid-template-columns: 1fr; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .form-actions { flex-direction: column; }
    .btn-block { width: 100%; }
    .app-header__inner { gap: .4rem; padding: 0 .5rem; }
    .app-content { padding: .75rem; }
    .app-nav { gap: .4rem; }
    .btn { padding: .45rem .8rem; font-size: .85rem; }
    .checkbox-group { max-height: 150px; }
}

/* Print */
@media print {
    .app-header, .app-sidebar, .app-footer, .sidebar-toggle, .no-print { display: none !important; }
    .app-content { padding: 0; background: white; }
    body { background: white; }
}

/* ── Master-Detail (3 columns) ── */
.master-detail {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.master-detail--2 {
    grid-template-columns: 1fr 1fr;
}

.md-col {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    max-height: 70vh;
    overflow: hidden;
}

.md-col__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .75rem 1rem;
    background: var(--dark);
    color: var(--white);
    flex-shrink: 0;
}

.md-col__header h2 { color: var(--white); margin: 0; font-size: 1rem; }

.md-col__list {
    flex: 1;
    overflow-y: auto;
    padding: .5rem;
}

.md-empty {
    text-align: center;
    color: #666;
    padding: 1.5rem .5rem;
    font-size: .88rem;
}

.md-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .6rem .75rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background .15s;
    margin-bottom: .35rem;
    border: 1px solid transparent;
}

.md-item:hover { background: var(--gray-bg); }

.md-item--active {
    background: var(--dark);
    color: var(--white);
}

.md-item--active .md-item__title,
.md-item--active .md-item__sub { color: var(--white); }

.md-item__info { display: flex; flex-direction: column; gap: .15rem; min-width: 0; flex: 1; }

.md-item__title {
    font-weight: 600;
    font-size: .9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.md-item__sub { font-size: .78rem; color: #666; }

.md-item__actions { display: flex; gap: .3rem; flex-shrink: 0; }

/* ── Modals ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-box {
    background: var(--white);
    border-radius: 10px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 8px 32px rgba(0,0,0,.2);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-box--sm { max-width: 360px; }

.modal-box__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--dark);
    color: var(--white);
    border-radius: 10px 10px 0 0;
}

.modal-box__header h2 { color: var(--white); margin: 0; font-size: 1.1rem; }

.modal-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.modal-box form { padding: 1.25rem; }

.modal-box__actions {
    display: flex;
    gap: .75rem;
    margin-top: 1rem;
}

/* ── Alerts ── */
.alert--ok {
    border-color: var(--dark);
    background: var(--dark);
    color: var(--white);
}

.alert--error {
    border: 2px solid var(--black);
    background: var(--white);
    color: var(--black);
    font-weight: 700;
}

/* ── Responsive: Master-Detail ── */
@media (max-width: 900px) {
    .master-detail, .master-detail--2 { grid-template-columns: 1fr 1fr; }
    .md-col { max-height: 50vh; }
}

@media (max-width: 600px) {
    .master-detail, .master-detail--2 { grid-template-columns: 1fr; }
    .md-col { max-height: 40vh; }
    .modal-box { max-width: 100%; }
    .md-item__actions { flex-direction: column; gap: .2rem; }
}

/* ── Context Bar (Question Entry) ── */
.context-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--dark);
    color: var(--white);
    border-radius: var(--radius);
    padding: .85rem 1.25rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.context-bar__info {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
    flex: 1;
    min-width: 0;
}

.context-bar__breadcrumb {
    display: flex;
    align-items: center;
    gap: .35rem;
    flex-wrap: wrap;
    font-size: .9rem;
}

.context-bar__breadcrumb span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.context-bar__separator {
    opacity: .5;
    font-size: .75rem;
}

.context-bar__counter {
    background: var(--white);
    color: var(--dark);
    border-radius: 20px;
    padding: .25rem .85rem;
    font-size: .82rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}

.context-bar__actions {
    display: flex;
    gap: .5rem;
    flex-shrink: 0;
}

.context-bar--empty {
    justify-content: center;
    text-align: center;
}

/* ── Question Entry Form ── */
.question-entry-card {
    position: relative;
}

.question-entry-card .form-actions {
    position: sticky;
    bottom: 0;
    background: var(--white);
    padding-top: 1rem;
    padding-bottom: 1rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
    z-index: 5;
}

@media (max-width: 600px) {
    .context-bar { padding: .6rem .85rem; gap: .5rem; }
    .context-bar__breadcrumb span { max-width: 120px; font-size: .82rem; }
    .context-bar__counter { font-size: .75rem; padding: .2rem .6rem; }
}

/* ── Hierarchical Approval ── */
.approval-breadcrumb {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.approval-breadcrumb__item {
    cursor: pointer;
    font-size: .9rem;
    padding: .25rem .6rem;
    border-radius: 4px;
    transition: background .15s;
}

.approval-breadcrumb__item:hover { background: var(--gray-bg); }

.approval-breadcrumb__item--active {
    background: var(--dark);
    color: var(--white);
}

.approval-breadcrumb__sep { opacity: .4; font-size: .8rem; }

/* ── Stat Cards Grid ── */
.approval-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
}

.stat-card:hover {
    border-color: var(--dark);
    box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

.stat-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: .75rem;
}

.stat-card__title {
    font-weight: 700;
    font-size: .95rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 180px;
}

.stat-card__total {
    background: var(--dark);
    color: var(--white);
    border-radius: 20px;
    padding: .15rem .65rem;
    font-size: .82rem;
    font-weight: 700;
    flex-shrink: 0;
}

.stat-card__bar {
    height: 8px;
    background: var(--gray-bg);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    margin-bottom: .6rem;
}

.stat-card__bar--approved {
    background: var(--dark);
    height: 100%;
    transition: width .3s;
}

.stat-card__bar--pending {
    background: var(--border);
    height: 100%;
    transition: width .3s;
}

.stat-card__legend {
    display: flex;
    justify-content: space-between;
    font-size: .78rem;
    color: #555;
}

.stat-card__legend b { color: var(--black); }

/* ── Question Rows ── */
.approval-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.approval-toolbar__left { display: flex; gap: .5rem; flex-wrap: wrap; }
.approval-toolbar__right { display: flex; align-items: center; }
.approval-toolbar__count {
    font-size: .85rem;
    font-weight: 600;
    background: var(--gray-bg);
    padding: .25rem .75rem;
    border-radius: 20px;
}

.question-row {
    display: flex;
    gap: .75rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: .75rem;
    transition: border-color .15s;
}

.question-row:hover { border-color: var(--dark); }

.question-row__check {
    flex-shrink: 0;
    padding-top: .15rem;
}

.question-row__check input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.question-row__body { flex: 1; min-width: 0; }

.question-row__text {
    font-size: .92rem;
    line-height: 1.5;
    margin-bottom: .5rem;
}

.question-row__options {
    display: flex;
    flex-direction: column;
    gap: .3rem;
    margin-bottom: .5rem;
}

.question-row__option {
    font-size: .82rem;
    padding: .3rem .6rem;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.question-row__option--correct {
    border: 2px solid var(--black);
    font-weight: 700;
}

.question-row__meta {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
    font-size: .76rem;
    color: #666;
}

.question-row__status {
    font-weight: 700;
    padding: .1rem .5rem;
    border-radius: 4px;
}

.question-row__status--1 { background: var(--gray-bg); color: var(--black); }
.question-row__status--2 { background: var(--dark); color: var(--white); }
.question-row__status--3 { background: var(--white); color: var(--black); border: 1px solid var(--dark); }
.question-row__status--4 { background: var(--black); color: var(--white); }

.question-row--flagged {
    border: 2px dashed var(--dark) !important;
    background: repeating-linear-gradient(
        135deg,
        transparent,
        transparent 8px,
        rgba(0,0,0,.03) 8px,
        rgba(0,0,0,.03) 16px
    );
}

.btn-review {
    background: var(--white);
    color: var(--black);
    border: 2px solid var(--dark);
    font-weight: 700;
    padding: .25rem .65rem;
    font-size: .78rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background .15s;
}

.btn-review:hover {
    background: var(--dark);
    color: var(--white);
}

.question-row__actions {
    display: flex;
    flex-direction: column;
    gap: .3rem;
    flex-shrink: 0;
}

/* ── Responsive: Approval ── */
@media (max-width: 600px) {
    .approval-grid { grid-template-columns: 1fr; }
    .question-row { flex-direction: column; gap: .5rem; }
    .question-row__actions { flex-direction: row; }
    .question-row__meta { font-size: .72rem; gap: .5rem; }
    .approval-toolbar { flex-direction: column; align-items: flex-start; }
}

/* ── Toast Notifications (top-right) ── */
#toastContainer {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .75rem 1.25rem;
    border-radius: var(--radius);
    font-size: .88rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0,0,0,.15);
    animation: toastSlide .3s ease-out;
    pointer-events: auto;
    max-width: 400px;
}

.toast--ok {
    background: #1a6b35;
    color: #fff;
}

.toast--error {
    background: #8b1a1a;
    color: #fff;
}

.toast__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    font-weight: 900;
    font-size: .85rem;
    flex-shrink: 0;
}

.toast--hide {
    animation: toastOut .3s ease-in forwards;
}

@keyframes toastSlide {
    from { opacity: 0; transform: translateX(-100%); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(-100%); }
}

/* ── Floating Recent Questions Panel ── */
.recent-panel {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    width: 340px;
    max-height: 60vh;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0,0,0,.15);
    z-index: 1000;
    flex-direction: column;
    overflow: hidden;
}

.recent-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .75rem 1rem;
    background: var(--dark);
    color: var(--white);
    flex-shrink: 0;
}

.recent-panel__header h3 {
    margin: 0;
    font-size: .95rem;
    font-weight: 700;
}

.recent-panel__toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0 .25rem;
    line-height: 1;
}

.recent-panel__toggle:hover { opacity: .7; }

.recent-panel__body {
    overflow-y: auto;
    flex: 1;
    padding: .5rem;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem .75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background .15s;
    margin-bottom: .25rem;
}

.recent-item:hover { background: var(--gray-bg); }

.recent-item__num {
    background: var(--dark);
    color: var(--white);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .72rem;
    font-weight: 700;
    flex-shrink: 0;
}

.recent-item__text {
    flex: 1;
    font-size: .82rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.recent-item__edit {
    font-size: .75rem;
    font-weight: 700;
    opacity: 0;
    transition: opacity .15s;
    flex-shrink: 0;
}

.recent-item:hover .recent-item__edit { opacity: 1; }

/* ── FAB Button (when panel is collapsed) ── */
.recent-panel__fab {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    background: var(--dark);
    color: var(--white);
    border: none;
    border-radius: 30px;
    padding: .65rem 1.25rem;
    font-size: .85rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,.2);
    z-index: 1000;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    transition: transform .15s;
}

.recent-panel__fab:hover { transform: scale(1.05); }

@media (max-width: 600px) {
    .recent-panel { width: calc(100vw - 2rem); }
    .toast { max-width: calc(100vw - 2rem); font-size: .82rem; }
}

/* ── Exam Create: Lesson Groups ── */
.lesson-group {
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: .5rem;
    overflow: hidden;
}

.lesson-group__header {
    padding: .5rem .75rem;
    background: var(--gray-bg);
    border-bottom: 1px solid var(--border);
}

.lesson-group__header label {
    display: flex;
    align-items: center;
    gap: .5rem;
    cursor: pointer;
    margin: 0;
}

.lesson-group__body {
    padding: .5rem .75rem .5rem 1.5rem;
}

/* ═══════════════════════════════════════════════════════════════
   QUESTION BANK UI (qb- prefix)
   Color scheme: dark gray (#2b2b2b / #333) + white (#fff) only
   ═══════════════════════════════════════════════════════════════ */

/* ── Header ── */
.qb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--dark);
    color: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.qb-header__title {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 800;
}

.qb-header__desc {
    margin: .25rem 0 0;
    font-size: .9rem;
    opacity: .7;
}

.qb-header__actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}

/* ── Buttons ── */
.qb-btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .55rem 1.1rem;
    border-radius: 6px;
    font-size: .85rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .15s;
    white-space: nowrap;
}

.qb-btn--primary {
    background: var(--white);
    color: var(--dark);
    border-color: var(--white);
}

.qb-btn--primary:hover {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.qb-btn--dark {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
}

.qb-btn--dark:hover {
    background: #000;
    border-color: #000;
}

.qb-btn--outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.qb-btn--outline:hover {
    background: var(--white);
    color: var(--dark);
}

.qb-btn--sm {
    padding: .35rem .75rem;
    font-size: .78rem;
}

.qb-btn__icon {
    font-size: 1rem;
    font-weight: 900;
}

/* ── Dashboard Stats ── */
.qb-stats {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.qb-stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
    transition: transform .2s, box-shadow .2s;
    animation: qbFadeIn .4s ease-out;
}

.qb-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,.08);
}

.qb-stat-card__icon {
    font-size: 1.5rem;
    margin-bottom: .5rem;
}

.qb-stat-card__value {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: .25rem;
}

.qb-stat-card__label {
    font-size: .78rem;
    font-weight: 600;
    opacity: .7;
}

.qb-stat--total { border-top: 3px solid var(--dark); }
.qb-stat--approved { border-top: 3px solid #333; }
.qb-stat--pending { border-top: 3px solid var(--dark); }
.qb-stat--flagged { border-top: 3px dashed var(--dark); }
.qb-stat--rejected { border-top: 3px solid var(--dark); }
.qb-stat--subjects { border-top: 3px solid var(--dark); }
.qb-stat--lessons { border-top: 3px solid var(--dark); }
.qb-stat--usage { border-top: 3px solid var(--dark); }

/* ── Search Panel ── */
.qb-search-panel {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.qb-search-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .85rem 1.25rem;
    background: var(--gray-bg);
    cursor: pointer;
    user-select: none;
}

.qb-search-panel__header h3 {
    margin: 0;
    font-size: .95rem;
    font-weight: 700;
}

.qb-search-panel__toggle {
    font-size: 1.1rem;
    font-weight: 700;
}

.qb-search-panel__body {
    padding: 1.25rem;
}

/* ── Chart Report Panel ── */
.qb-chart-panel {
    margin-bottom: 1.5rem;
}

.qb-chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.qb-chart-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.qb-chart-box--wide {
    grid-column: 1 / -1;
}

.qb-chart-box h4 {
    margin: 0 0 .75rem;
    font-size: .85rem;
    font-weight: 700;
    text-align: center;
}

.qb-chart-box canvas {
    max-height: 320px;
}

.qb-chart-empty {
    text-align: center;
    padding: 2rem;
    opacity: .6;
    font-weight: 600;
}

@media (max-width: 768px) {
    .qb-chart-grid {
        grid-template-columns: 1fr;
    }
}

.qb-search-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.qb-search-field--full {
    grid-column: 1 / -1;
}

.qb-search-field label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: .35rem;
}

.qb-search-field input,
.qb-search-field select {
    width: 100%;
    padding: .5rem .75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: .85rem;
    background: var(--white);
}

.qb-search-field input:focus,
.qb-search-field select:focus {
    outline: none;
    border-color: var(--dark);
}

.qb-search-actions {
    display: flex;
    gap: .5rem;
    justify-content: flex-end;
}

/* ── Quick Filter Chips ── */
.qb-chips {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.qb-chip {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .4rem .85rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
}

.qb-chip:hover {
    border-color: var(--dark);
}

.qb-chip--active {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
}

.qb-chip__count {
    background: rgba(255,255,255,.2);
    padding: .1rem .4rem;
    border-radius: 10px;
    font-size: .72rem;
    font-weight: 700;
}

.qb-chip:not(.qb-chip--active) .qb-chip__count {
    background: var(--gray-bg);
    color: var(--dark);
}

/* ── Bulk Toolbar ── */
.qb-bulk-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--dark);
    color: var(--white);
    padding: .65rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: .5rem;
}

.qb-bulk-toolbar__count {
    font-size: .85rem;
    font-weight: 700;
}

.qb-bulk-toolbar__actions {
    display: flex;
    gap: .4rem;
    flex-wrap: wrap;
}

/* ── Results Info ── */
.qb-results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: .82rem;
    font-weight: 600;
    opacity: .8;
    flex-wrap: wrap;
    gap: .5rem;
}

.qb-results-info__right {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.qb-results-info__right select {
    padding: .25rem .5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: .8rem;
    background: var(--white);
}

/* ── Question Cards Grid ── */
.qb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.qb-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: box-shadow .2s, transform .2s;
    animation: qbCardIn .35s ease-out both;
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.qb-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,.06);
    transform: translateY(-2px);
}

.qb-card__top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: .5rem;
}

.qb-card__check input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.qb-card__badges {
    display: flex;
    flex-wrap: wrap;
    gap: .3rem;
    justify-content: flex-end;
}

.qb-card__text {
    font-size: .88rem;
    line-height: 1.6;
    cursor: pointer;
    min-height: 2.5rem;
}

.qb-card__text:hover {
    opacity: .8;
}

.qb-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: .3rem;
}

.qb-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: .5rem;
    padding-top: .75rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.qb-card__info {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    font-size: .72rem;
    opacity: .65;
}

.qb-card__actions {
    display: flex;
    gap: .2rem;
}

/* ── Badges ── */
.qb-badge {
    display: inline-flex;
    align-items: center;
    padding: .2rem .55rem;
    border-radius: 4px;
    font-size: .72rem;
    font-weight: 700;
    white-space: nowrap;
}

.qb-badge--status-1 { background: var(--gray-bg); color: var(--dark); border: 1px solid var(--border); }
.qb-badge--status-2 { background: var(--dark); color: var(--white); }
.qb-badge--status-3 { background: var(--white); color: var(--dark); border: 2px solid var(--dark); }
.qb-badge--status-4 { background: var(--dark); color: var(--white); border: 2px dashed var(--white); }

.qb-badge--diff-easy { background: var(--gray-bg); color: var(--dark); }
.qb-badge--diff-medium { background: var(--dark); color: var(--white); }
.qb-badge--diff-hard { background: #000; color: var(--white); }

.qb-badge--info {
    background: var(--white);
    color: var(--dark);
    border: 1px solid var(--border);
}

.qb-badge--subject {
    background: var(--gray-bg);
    color: var(--dark);
    font-size: .72rem;
}

.qb-badge--chapter {
    background: var(--white);
    color: var(--dark);
    border: 1px solid var(--border);
    font-size: .72rem;
}

.qb-badge--lesson {
    background: var(--gray-bg);
    color: var(--dark);
    font-size: .72rem;
}

/* ── Icon Buttons ── */
.qb-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--white);
    color: var(--dark);
    font-size: .9rem;
    cursor: pointer;
    text-decoration: none;
    transition: all .15s;
}

.qb-icon-btn:hover {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
}

.qb-icon-btn--approve:hover {
    background: #000;
    border-color: #000;
}

.qb-icon-btn--reject:hover {
    background: var(--white);
    color: var(--dark);
    border-color: var(--dark);
}

/* ── Pagination ── */
.qb-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: .25rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.qb-page-btn {
    min-width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--white);
    color: var(--dark);
    font-size: .82rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0 .5rem;
    transition: all .15s;
}

.qb-page-btn:hover {
    border-color: var(--dark);
    background: var(--gray-bg);
}

.qb-page-btn--active {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
}

.qb-page-ellipsis {
    padding: 0 .25rem;
    font-weight: 700;
    opacity: .5;
}

/* ── Preview Modal ── */
.qb-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.qb-modal {
    background: var(--white);
    border-radius: var(--radius);
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.qb-modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--dark);
    color: var(--white);
    flex-shrink: 0;
}

.qb-modal__header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.qb-modal__close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.qb-modal__body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.qb-preview-text {
    font-size: 1rem;
    line-height: 1.7;
    padding: 1rem;
    background: var(--gray-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 600;
}

.qb-preview-options {
    margin-bottom: 1rem;
}

.qb-preview-option {
    padding: .6rem .9rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: .4rem;
    font-size: .88rem;
}

.qb-preview-option--correct {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
    font-weight: 700;
}

.qb-preview-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .5rem;
    margin-bottom: 1.5rem;
}

.qb-preview-meta__row {
    display: flex;
    justify-content: space-between;
    padding: .4rem .75rem;
    background: var(--gray-bg);
    border-radius: 4px;
    font-size: .82rem;
}

.qb-preview-meta__row span { opacity: .6; }
.qb-preview-meta__row b { font-weight: 700; }

.qb-preview-actions {
    display: flex;
    gap: .5rem;
    justify-content: flex-end;
}

/* ── Skeleton Loading ── */
.qb-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1rem;
}

.qb-skeleton-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    height: 180px;
    position: relative;
    overflow: hidden;
}

.qb-skeleton-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,.06), transparent);
    animation: qbShimmer 1.5s infinite;
}

/* ── Empty State ── */
.qb-empty-state {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.qb-empty-state__icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.qb-empty-state h3 {
    margin: 0 0 .5rem;
    font-size: 1.2rem;
}

.qb-empty-state p {
    margin: 0 0 1.5rem;
    opacity: .6;
    font-size: .9rem;
}

/* ── Alert ── */
.qb-alert {
    padding: .75rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: .88rem;
}

.qb-alert--error {
    background: var(--dark);
    color: var(--white);
}

/* ── Animations ── */
@keyframes qbFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes qbCardIn {
    from { opacity: 0; transform: scale(.97); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes qbShimmer {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .qb-header { flex-direction: column; align-items: flex-start; }
    .qb-header__actions { width: 100%; }
    .qb-stats { grid-template-columns: repeat(2, 1fr); }
    .qb-grid, .qb-skeleton-grid { grid-template-columns: 1fr; }
    .qb-preview-meta { grid-template-columns: 1fr; }
    .qb-search-grid { grid-template-columns: 1fr; }
    .qb-card__footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .qb-stats { grid-template-columns: 1fr; }
    .qb-chips { gap: .3rem; }
    .qb-chip { font-size: .72rem; padding: .3rem .6rem; }
}