/* Optima Learning — admin console (extends app.css) */
body.admin { background: #F4F5F9; font-size: 14.5px; }
.admin-shell { display: grid; grid-template-columns: 252px minmax(0, 1fr); min-height: 100vh; }
.admin-side {
    position: sticky; top: 0; height: 100vh; overflow-y: auto;
    background-color: var(--navy-900);
    background-image: radial-gradient(rgba(255, 255, 255, .05) 1px, transparent 1.4px);
    background-size: 22px 22px;
    color: var(--navy-200); display: flex; flex-direction: column;
}
.admin-side .brand { color: #fff; padding: 1.2rem 1.25rem 1rem; }
.admin-side .brand__text small { color: var(--navy-300); }
.admin-nav { padding: .5rem .75rem; display: grid; gap: 2px; }
.admin-nav__label { font-size: .68rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--navy-400); padding: 1rem .75rem .4rem; }
.admin-nav a { display: flex; align-items: center; gap: .75rem; padding: .58rem .75rem; border-radius: 8px; color: var(--navy-200); font-weight: 500; font-size: .9rem; }
.admin-nav a i { width: 18px; text-align: center; color: var(--navy-400); }
.admin-nav a:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.admin-nav a.is-active { background: rgba(255, 255, 255, .1); color: #fff; }
.admin-nav a.is-active i { color: var(--orange-400); }
.admin-nav .count { margin-left: auto; font-size: .7rem; font-weight: 700; background: var(--orange-500); color: var(--navy-950); border-radius: 999px; padding: .05rem .45rem; }
.admin-side__foot { margin-top: auto; padding: 1rem; border-top: 1px solid rgba(255, 255, 255, .08); }
.admin-side__foot a { color: var(--navy-200); font-size: .85rem; }
.admin-main { min-width: 0; display: flex; flex-direction: column; }
.admin-top { position: sticky; top: 0; z-index: 1020; height: 62px; background: rgba(255, 255, 255, .95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 1rem; padding: 0 1.5rem; }
.admin-top__title { font-family: var(--font-display); font-weight: 700; color: var(--ink); font-size: 1.05rem; margin: 0; }
.admin-top__actions { margin-left: auto; display: flex; align-items: center; gap: .5rem; }
.admin-content { padding: 1.75rem 1.75rem 3rem; max-width: 1320px; width: 100%; }
.admin-burger { display: none; }
.page-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.page-title h1 { font-size: 1.55rem; margin: 0; }
.page-title p { margin: .3rem 0 0; color: var(--muted); }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.15rem 1.25rem; height: 100%; }
.kpi__label { font-size: .8rem; color: var(--muted); font-weight: 600; display: flex; align-items: center; gap: .5rem; }
.kpi__label i { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--navy-50); color: var(--navy-600); font-size: .8rem; }
.kpi__value { font-family: var(--font-display); font-size: 1.65rem; font-weight: 800; color: var(--ink); margin-top: .55rem; line-height: 1.1; }
.kpi__sub { font-size: .8rem; color: var(--muted); margin-top: .25rem; }
.kpi--dark { background-color: var(--navy-900); border-color: var(--navy-900); background-image: radial-gradient(rgba(255, 255, 255, .06) 1px, transparent 1.4px); background-size: 20px 20px; }
.kpi--dark .kpi__label { color: var(--navy-300); }
.kpi--dark .kpi__label i { background: rgba(235, 134, 52, .16); color: var(--orange-400); }
.kpi--dark .kpi__value { color: #fff; }
.kpi--dark .kpi__sub { color: var(--navy-300); }
.toolbar { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; padding: .9rem 1.1rem; border-bottom: 1px solid var(--line-2); }
.toolbar .form-control, .toolbar .form-select { padding-top: .48rem; padding-bottom: .48rem; font-size: .88rem; }
.toolbar .input-icon > .form-control { padding-left: 2.4rem; }
.table-admin { margin: 0; }
.table-admin td { vertical-align: middle; }
.table-admin td.text-end, .table-admin .row-sub { white-space: nowrap; }
.table-admin tbody tr:hover { background: #FAFBFD; }
.row-title { font-weight: 600; color: var(--ink); }
.row-sub { font-size: .78rem; color: var(--muted); }
.thumb-sm { width: 64px; height: 40px; border-radius: 7px; object-fit: cover; background: var(--navy-50); flex: none; display: grid; place-items: center; color: var(--navy-300); overflow: hidden; }
.thumb-sm img { width: 100%; height: 100%; object-fit: cover; }
.actions { display: flex; gap: .3rem; justify-content: flex-end; flex-wrap: nowrap; }
.icon-action { width: 32px; height: 32px; border-radius: 8px; display: inline-grid; place-items: center; border: 1px solid var(--line); background: #fff; color: var(--muted); }
.icon-action:hover { color: var(--ink); border-color: var(--navy-200); background: var(--surface-2); }
.icon-action.danger:hover { color: var(--red-600); border-color: #F1C7C3; background: var(--red-50); }
.form-section { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); margin-bottom: 1.25rem; }
.form-section__head { padding: 1rem 1.3rem; border-bottom: 1px solid var(--line-2); }
.form-section__head h2 { font-size: 1rem; margin: 0; }
.form-section__head p { margin: .2rem 0 0; font-size: .84rem; color: var(--muted); }
.form-section__body { padding: 1.3rem; }
.sticky-actions { position: sticky; bottom: 0; z-index: 5; background: rgba(244, 245, 249, .92); backdrop-filter: blur(6px); padding: .85rem 0; border-top: 1px solid var(--line); display: flex; gap: .5rem; justify-content: flex-end; margin-top: 1rem; }
.segmented { display: inline-flex; background: var(--surface-3); border-radius: 10px; padding: 4px; gap: 4px; flex-wrap: wrap; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label { padding: .5rem .95rem; border-radius: 7px; font-weight: 600; font-size: .86rem; color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; gap: .45rem; }
.segmented input:checked + label { background: #fff; color: var(--ink); box-shadow: var(--shadow-xs); }
.segmented input:focus-visible + label { box-shadow: var(--ring); }
.type-pane { display: none; }
.type-pane.is-active { display: block; }
.dropzone { border: 2px dashed var(--navy-200); border-radius: var(--radius-lg); padding: 1.6rem; text-align: center; background: var(--surface-2); transition: border-color .15s, background .15s; position: relative; }
.dropzone:hover, .dropzone.is-over { border-color: var(--orange-500); background: var(--orange-50); }
.dropzone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dropzone__icon { font-size: 1.6rem; color: var(--navy-400); margin-bottom: .5rem; }
.dropzone__name { font-weight: 600; color: var(--ink); margin-top: .5rem; word-break: break-all; }
.lesson-list { display: grid; gap: .5rem; }
.lesson-row { display: flex; align-items: center; gap: .8rem; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .65rem .8rem; }
.lesson-row.is-dragging { opacity: .5; }
.lesson-row.drop-before { box-shadow: 0 -3px 0 var(--orange-500); }
.lesson-row.drop-after { box-shadow: 0 3px 0 var(--orange-500); }
.drag-handle { cursor: grab; color: var(--navy-300); padding: .25rem; }
.drag-handle:active { cursor: grabbing; }
.lesson-row__num { width: 26px; height: 26px; border-radius: 50%; background: var(--navy-50); color: var(--navy-600); font-weight: 700; font-size: .75rem; display: grid; place-items: center; flex: none; }
.lesson-row__title { flex: 1; min-width: 0; }
.lesson-row__title strong { color: var(--ink); font-weight: 600; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.section-label { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); padding: .6rem .2rem .2rem; }
.status-card { border-radius: var(--radius-lg); padding: 1.1rem 1.2rem; border: 1px solid var(--line); background: #fff; }
.status-card.is-live { border-color: var(--green-100); background: var(--green-50); }
.status-card.is-draft { border-color: var(--orange-100); background: var(--orange-50); }
.gateway-card { border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; overflow: hidden; }
.gateway-card__head { display: flex; align-items: center; gap: 1rem; padding: 1.1rem 1.3rem; border-bottom: 1px solid var(--line-2); }
.gateway-card__logo { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; font-size: 1.3rem; flex: none; }
.gateway-card__body { padding: 1.3rem; }
.mode-pill { display: inline-flex; align-items: center; gap: .35rem; font-size: .75rem; font-weight: 700; padding: .25rem .6rem; border-radius: 999px; }
.mode-pill.live { background: var(--green-50); color: var(--green-700); }
.mode-pill.sandbox { background: var(--amber-50); color: var(--amber-600); }
.secret-field { position: relative; }
.secret-field .form-control { padding-right: 5.5rem; font-family: ui-monospace, monospace; font-size: .86rem; }
.secret-field .chip { position: absolute; right: .55rem; top: 50%; transform: translateY(-50%); }
.copy-field { display: flex; gap: .4rem; }
.copy-field input { font-family: ui-monospace, monospace; font-size: .82rem; background: var(--surface-2); }
.upload-progress { display: none; margin-top: 1rem; }
.upload-progress.is-active { display: block; }
.chart-box { position: relative; height: 260px; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: .7rem; }
.checklist li { display: flex; gap: .7rem; align-items: flex-start; font-size: .9rem; }
.checklist .dot { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: .65rem; flex: none; margin-top: 1px; }
.checklist .dot.ok { background: var(--green-600); color: #fff; }
.checklist .dot.todo { border: 2px solid var(--navy-200); }
.ql-toolbar.ql-snow { border-color: var(--line) !important; border-radius: var(--radius-sm) var(--radius-sm) 0 0; background: var(--surface-2); }
.ql-container.ql-snow { border-color: var(--line) !important; border-radius: 0 0 var(--radius-sm) var(--radius-sm); font-family: var(--font-sans) !important; font-size: .95rem !important; }
.ql-editor { min-height: 180px; }
.admin-login { min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem; }
.admin-login__card { width: 100%; max-width: 400px; background: #fff; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); padding: 2.25rem; }
@media (max-width: 991.98px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-side { position: fixed; left: 0; top: 0; bottom: 0; width: 264px; z-index: 1040; transform: translateX(-100%); transition: transform .25s var(--ease); }
    .admin-side.is-open { transform: none; box-shadow: var(--shadow-lg); }
    .admin-burger { display: inline-grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
    .admin-content { padding: 1.25rem 1rem 3rem; }
    .admin-top { padding: 0 1rem; }
}