:root {
    --admin-ink: #182230;
    --admin-muted: #748094;
    --admin-primary: #EF6737;
    --admin-primary-dark: #D95427;
    --admin-bg: #F8F8F8;
    --admin-white: #FFFFFF;
    --admin-border: #E8E8E8;
    --admin-green: #138a65;
    --admin-red: #c54848;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--admin-ink);
    background: var(--admin-bg);
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; color: var(--admin-ink); background: var(--admin-bg); font-size: 14px; line-height: 1.55; }
a { color: var(--admin-primary); text-decoration: none; }
a:hover { color: var(--admin-primary-dark); }
button, input { font: inherit; }
.admin-shell { display: flex; min-height: 100vh; }
.sidebar { position: sticky; top: 0; display: flex; flex: 0 0 250px; flex-direction: column; height: 100vh; padding: 28px 17px 20px; overflow-y: auto; background: #EF6737; color: #fff; }
.sidebar-brand { display: flex; align-items: center; gap: 12px; padding: 0 9px 30px; color: #fff; font-size: 15px; font-weight: 750; }
.sidebar-brand:hover { color: #fff; }
.sidebar-brand small { display: block; margin-top: 1px; color: #a6b0c1; font-size: 11px; font-weight: 500; letter-spacing: .04em; }
.brand-mark { display: grid; width: 39px; height: 39px; place-items: center; border-radius: 12px; background: linear-gradient(145deg, #FF8057, #EF6737);
    color: white; font-size: 19px; font-weight: 800; }
.nav-label { margin: 0 10px 10px;  color: rgba(255, 255, 255, 0.75); font-size: 10px; font-weight: 750; letter-spacing: .15em; }
.side-nav { display: grid; gap: 5px; }
.side-nav a { display: flex; align-items: center; gap: 12px; min-height: 43px; padding: 0 12px; border-radius: 9px;  color: #FFFFFF; font-size: 13px; font-weight: 570; }
.side-nav a span { width: 19px; color: #FFFFFF; font-size: 17px; text-align: center; }
.side-nav a:hover, .side-nav a.active { background: rgba(255,255,255,.18);
    color: #fff; }
.side-nav a.active span { color: #fff; }
.sidebar-note { display: grid; gap: 5px; margin-top: auto; padding: 14px; border: 1px solid #35425a; border-radius: 11px; color: #c3cbda; font-size: 11px; }
.sidebar-note strong { color: white; font-size: 12px; }
.admin-main { display: flex; min-width: 0; flex: 1; flex-direction: column; }
.topbar { position: sticky; z-index: 2; top: 0; display: flex; min-height: 75px; align-items: center; justify-content: space-between; gap: 16px; padding: 12px clamp(20px, 4vw, 48px); border-bottom: 1px solid var(--admin-border); background: rgba(255,255,255,.95); }
.topbar > div:first-child { display: grid; gap: 2px; }
.topbar-kicker, .eyebrow { color: #858da1; font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.topbar strong { font-size: 15px; }
.topbar-user { display: flex; align-items: center; gap: 10px; color: #485365; font-size: 12px; }
.avatar { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 50%; background: #edf0ff; color: var(--admin-primary); font-weight: 750; }
.logout-form { margin-left: 6px; padding-left: 13px; border-left: 1px solid var(--admin-border); }
.page-content { width: min(100%, 1440px); flex: 1; margin: 0 auto; padding: 34px clamp(20px, 4vw, 48px) 48px; }
.admin-footer { padding: 17px clamp(20px, 4vw, 48px); border-top: 1px solid var(--admin-border); color: #8993a4; font-size: 11px; }
.welcome-row, .page-heading { display: flex; align-items: center; justify-content: space-between; gap: 22px; margin-bottom: 25px; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: clamp(25px, 3vw, 32px); line-height: 1.2; letter-spacing: -.045em; }
h2 { margin-bottom: 2px; font-size: 17px; letter-spacing: -.025em; }
h3 { margin: 0; font-size: 16px; }
.eyebrow { display: inline-block; margin-bottom: 8px; color: var(--admin-primary); }
.muted { margin-bottom: 0; color: var(--admin-muted); font-size: 12px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 15px; margin-bottom: 22px; }
.stat-card { display: grid; gap: 7px; min-height: 154px; padding: 19px; border: 1px solid var(--admin-border); border-radius: 13px; background: var(--admin-white); }
.stat-card strong { font-size: 28px; letter-spacing: -.04em; }
.stat-label { color: var(--admin-muted); font-size: 12px; font-weight: 550; }
.stat-card a { align-self: end; color: var(--admin-primary); font-size: 11px; font-weight: 650; }
.stat-card a span { margin-left: 4px; }
.stat-icon { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 9px; font-size: 16px; }
.icon-purple { background: #f0efff; color: #6256c7; }.icon-blue { background: #eaf4ff; color: #2772b9; }.icon-green { background: #e9f8f1; color: #21815d; }.icon-orange { background: #fff3e8; color: #c97734; }
.panel { margin-bottom: 18px; padding: 22px; border: 1px solid var(--admin-border); border-radius: 13px; background: var(--admin-white); box-shadow: 0 2px 6px rgba(29, 44, 70, .025); }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.panel-heading p { margin-top: 4px; }
.welcome-panel { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 28px; background: linear-gradient(110deg, #fff 55%, #fff3ee); }
.welcome-panel h2 { margin-bottom: 7px; font-size: 21px; }.welcome-panel p { max-width: 680px; }
.button { display: inline-flex; min-height: 40px; align-items: center; justify-content: center; gap: 9px; padding: 0 15px; border: 0; border-radius: 8px; cursor: pointer; font-size: 12px; font-weight: 680; white-space: nowrap; }
.button-primary { background: var(--admin-primary);
    color: white; }.button-primary:hover {background: var(--admin-primary-dark);
    color: #fff; }
.button-secondary { border: 1px solid #dce0f5; background: #f3f4ff; color: #484fc0; }.button-secondary:hover { background: #e8eaff; color: #393fa5; }
.text-button { padding: 3px 0; border: 0; background: transparent; color: var(--admin-primary); cursor: pointer; font-size: 11px; font-weight: 650; }
.text-button:hover { text-decoration: underline; }.danger-text { color: var(--admin-red); }
.content-grid { display: grid; align-items: start; gap: 18px; }.two-column { grid-template-columns: minmax(280px, .78fr) minmax(0, 1.5fr); }.institution-grid { grid-template-columns: minmax(280px, .75fr) minmax(0, 1.6fr); }
.form-grid { display: grid; gap: 15px; }.form-grid label, .translation-grid label, .inline-form label, .upload-fields label { display: grid; gap: 6px; color: #475366; font-size: 11px; font-weight: 650; }
input, textarea, select { width: 100%; min-height: 39px; padding: 9px 11px; border: 1px solid #dce1e9; border-radius: 7px; outline: none; background: #fff; color: var(--admin-ink); font-size: 12px; }
textarea { min-height: 80px; resize: vertical; } input:focus, textarea:focus, select:focus { border-color: #EF6737;
    box-shadow: 0 0 0 3px #fff0eb; }
input[type=file] { padding: 6px; color: var(--admin-muted); font-size: 11px; }
.form-actions { display: flex; justify-content: flex-end; margin-top: 2px; }.form-actions .button { min-width: 130px; }
.translation-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: end; gap: 14px; }
.translation-grid .form-actions { grid-column: 1 / -1; }
.table-wrap { width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; text-align: left; }
th { padding: 10px 12px; border-bottom: 1px solid var(--admin-border); color: #8992a2; font-size: 9px; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; white-space: nowrap; }
td { padding: 13px 12px; border-bottom: 1px solid #edf0f4; color: #566174; font-size: 11px; vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }.table-primary { display: block; color: var(--admin-ink); font-size: 12px; font-weight: 680; }.table-primary:hover { color: var(--admin-primary); }
td small { display: block; margin-top: 3px; color: #8a94a5; font-size: 10px; }
.table-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; white-space: nowrap; }.table-actions form { margin: 0; }
.badge, .count-pill { display: inline-flex; align-items: center; padding: 4px 8px; border-radius: 20px; font-size: 9px; font-weight: 700; white-space: nowrap; }.badge-green { background: #e9f8f1; color: #13825e; }.badge-gray { background: #f0f2f5; color: #747e8e; }
.count-pill { min-width: 28px; justify-content: center; background: #f0f1ff; color: #5059cb; }
.empty-state { padding: 22px; border: 1px dashed #d9dfe9; border-radius: 9px; color: var(--admin-muted); font-size: 12px; text-align: center; }.empty-inline { padding: 15px 0 2px; color: #8a94a5; font-size: 11px; }
.breadcrumbs { display: flex; align-items: center; gap: 9px; margin: -8px 0 17px; color: #8a94a5; font-size: 11px; }.breadcrumbs a { color: var(--admin-primary); }
.section-heading { display: flex; align-items: center; justify-content: space-between; margin: 29px 0 13px; }.section-heading h2 { margin: 0; font-size: 21px; }
.add-level-panel { padding: 14px 18px; }.inline-form { display: flex; align-items: end; gap: 12px; }.inline-form label { flex: 1; }.inline-form button { margin-bottom: 1px; }.order-field { max-width: 100px; }
.level-card { padding: 0 20px 17px; overflow: hidden; }.level-heading { display: flex; align-items: center; justify-content: space-between; padding: 17px 0 14px; }.level-heading .muted { margin-top: 3px; }.level-index { color: #8d96a8; font-size: 9px; font-weight: 750; letter-spacing: .08em; }
.topic-add-form { display: grid; grid-template-columns: 1fr 1.35fr 85px auto; gap: 8px; padding: 12px; border-radius: 9px; background: #f7f8fb; }.topic-list { margin-top: 7px; }.topic-row { display: flex; align-items: center; gap: 11px; padding: 12px 6px; border-bottom: 1px solid #edf0f4; color: var(--admin-ink); }.topic-row:last-child { border-bottom: 0; }.topic-row:hover { color: var(--admin-primary); }.topic-dot { color: #7880e1; font-size: 16px; }.topic-name { flex: 1; font-size: 12px; font-weight: 650; }.topic-name small { color: #8993a4; font-size: 10px; font-weight: 450; }.topic-videos { color: var(--admin-muted); font-size: 10px; }.row-arrow { color: #9aa3b2; }
.billing-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 650px; }.billing-stats .stat-card { min-height: 115px; }
.numeric { text-align: right; }.input-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.alert { margin-bottom: 20px; padding: 11px 14px; border: 1px solid transparent; border-radius: 8px; font-size: 12px; }.alert-success { border-color: #c9eddd; background: #edfbf4; color: #13704f; }.alert-error { border-color: #f2d5d5; background: #fff3f3; color: #a83f3f; }
.video-structure { display: flex; align-items: center; gap: 14px; margin-bottom: 19px; padding: 16px 20px; border: 1px solid var(--admin-border); border-radius: 12px; background: #fff; }.video-structure > div { display: flex; flex: 1; align-items: center; gap: 10px; }.video-structure strong, .video-structure small { display: block; }.video-structure strong { font-size: 11px; }.video-structure small { color: var(--admin-muted); font-size: 9px; }.step-number { display: grid; width: 27px; height: 27px; flex: 0 0 27px; place-items: center; border-radius: 50%; background: #f0f1ff; color: var(--admin-primary); font-size: 11px; font-weight: 750; }.structure-arrow { color: #a2aabc; }
.video-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; gap: 14px; }.video-group { padding: 18px; }.video-group .panel-heading { margin-bottom: 13px; }.video-group .panel-heading h2 { margin-bottom: 3px; font-size: 15px; }.video-group .eyebrow { margin-bottom: 4px; font-size: 8px; }.video-group .muted { font-size: 10px; }
.upload-form { padding: 13px; border-radius: 9px; background: #f7f8fb; }.upload-fields { display: grid; gap: 10px; }.upload-actions { display: grid; gap: 9px; margin-top: 11px; }.upload-actions .button { width: 100%; }.upload-actions .muted { font-size: 9px; }
.video-list { margin-top: 11px; }.video-row { display: grid; grid-template-columns: 27px 1fr; gap: 8px; padding: 11px 0; border-top: 1px solid #edf0f4; }.video-icon { display: grid; width: 25px; height: 25px; place-items: center; border-radius: 7px; background: #eeefff; color: var(--admin-primary); }.video-details { min-width: 0; }.video-details strong { display: block; overflow: hidden; color: var(--admin-ink); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }.video-details small { display: block; margin: 3px 0; overflow: hidden; color: #8b94a4; font-size: 8px; text-overflow: ellipsis; white-space: nowrap; }.video-link { font-size: 9px; }.video-row form { grid-column: 2; justify-self: end; }
.error-panel { max-width: 560px; margin: 70px auto; text-align: center; }.error-panel h1 { margin-bottom: 8px; }.error-panel .button { margin-top: 18px; }
.login-body { display: grid; min-height: 100vh; place-items: center; padding: 22px; background: radial-gradient(circle at 12% 8%, #e7e9ff, transparent 35%), #f3f5fa; }.login-wrap { width: min(100%, 430px); }.login-brand { margin: 0 0 20px 4px; color: var(--admin-ink); }.login-brand:hover { color: var(--admin-ink); }.login-brand small { color: var(--admin-muted); }.login-card { padding: 34px; border: 1px solid var(--admin-border); border-radius: 16px; background: white; box-shadow: 0 18px 50px rgba(30, 41, 70, .08); }.login-card h1 { margin-bottom: 5px; font-size: 26px; }.login-card > .muted { margin-bottom: 23px; }.login-card label { display: block; margin: 16px 0 6px; color: #475366; font-size: 11px; font-weight: 650; }.login-card input { min-height: 43px; }.login-card .button { margin-top: 22px; }.full-width { width: 100%; }.login-footnote { margin: 19px 0 0; color: #8993a4; font-size: 10px; text-align: center; }
@media (max-width: 1080px) { .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.video-groups { grid-template-columns: 1fr; }.video-group { display: grid; grid-template-columns: minmax(190px, .75fr) minmax(280px, 1.25fr); gap: 12px 18px; }.video-group .panel-heading { grid-column: 1; }.upload-form { grid-column: 1; }.video-list, .empty-inline { grid-column: 2; grid-row: 1 / span 2; align-self: center; } }
@media (max-width: 790px) { .sidebar { position: relative; flex: 0 0 190px; padding-inline: 12px; }.sidebar-brand { font-size: 13px; }.two-column, .institution-grid { grid-template-columns: 1fr; }.translation-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .admin-shell { display: block; }.sidebar { position: static; width: 100%; height: auto; padding: 12px 16px; }.sidebar-brand { padding: 0 2px 12px; }.nav-label, .sidebar-note { display: none; }.side-nav { display: flex; gap: 5px; overflow-x: auto; }.side-nav a { flex: 0 0 auto; min-height: 36px; padding: 0 10px; font-size: 10px; }.side-nav a span { display: none; }.topbar { position: static; min-height: 61px; padding: 10px 17px; }.topbar-user > span:not(.avatar) { display: none; }.page-content { padding: 25px 16px 35px; }.welcome-row, .page-heading { align-items: flex-start; flex-direction: column; }.welcome-panel { align-items: flex-start; flex-direction: column; }.stats-grid { gap: 9px; }.stat-card { min-height: 130px; padding: 13px; }.stat-card strong { font-size: 23px; }.panel { padding: 17px; }.panel.list-panel { padding: 17px 11px; }.topic-add-form { grid-template-columns: 1fr 1fr; }.topic-add-form input:nth-of-type(2) { grid-column: 1 / -1; }.video-structure { gap: 6px; padding: 11px; }.video-structure > div { gap: 5px; }.video-structure strong { font-size: 9px; }.video-structure small { font-size: 8px; }.structure-arrow { font-size: 9px; }.step-number { width: 22px; height: 22px; flex-basis: 22px; font-size: 9px; }.video-group { display: block; }.translation-grid { grid-template-columns: 1fr; }.input-pair { grid-template-columns: 1fr; }.billing-stats { grid-template-columns: 1fr 1fr; }.table-actions { gap: 7px; }.login-card { padding: 25px; } }
.level-edit-form { display: flex; align-items: center; gap: 9px; margin-bottom: 11px; }.level-edit-form input:first-of-type { max-width: 260px; }.level-edit-form .text-button { margin-left: auto; }
.topic-edit-form { display: grid; grid-template-columns: 1fr 1.4fr 90px auto; align-items: end; gap: 10px; }.topic-edit-form label { display: grid; gap: 6px; color: #475366; font-size: 11px; font-weight: 650; }
@media (max-width: 600px) { .topic-edit-form { grid-template-columns: 1fr; }.level-edit-form { flex-wrap: wrap; }.level-edit-form input:first-of-type { max-width: none; flex: 1 1 180px; } }