:root {
    color-scheme: light;
    --ink: #17172f;
    --muted: #62677d;
    --soft: #8d92a5;
    --line: #dde3ee;
    --line-strong: #c9d2e3;
    --brand: #4d61e8;
    --brand-dark: #3042c3;
    --brand-soft: #eef1ff;
    --accent: #ff7a59;
    --accent-dark: #df5736;
    --mint: #e7fbf2;
    --mint-strong: #8be4bd;
    --peach: #fff1e8;
    --peach-strong: #ffba92;
    --lavender: #f2edff;
    --lavender-strong: #b9a7ff;
    --sky: #eaf7ff;
    --sky-strong: #9bdcff;
    --rose: #fff0f5;
    --rose-strong: #f8a9c4;
    --butter: #fff9dc;
    --butter-strong: #f1d56b;
    --bg: #f8f6f2;
    --panel: #ffffff;
    --panel-soft: #fffdf8;
    --success: #197b4d;
    --success-bg: #e7fbf2;
    --warning: #8a5d00;
    --warning-bg: #fff5d6;
    --danger: #a52828;
    --danger-bg: #fff0f5;
    --radius: 8px;
    --shadow: 0 20px 46px rgb(57 50 88 / 11%);
}

* {
    box-sizing: border-box;
}

html {
    background: var(--bg);
}

body {
    position: relative;
    margin: 0 !important;
    min-height: 100vh;
    background:
        linear-gradient(180deg, rgb(255 253 248 / 94%) 0, var(--bg) 420px),
        repeating-linear-gradient(90deg, rgb(77 97 232 / 4%) 0 1px, transparent 1px 64px),
        var(--bg) !important;
    color: var(--ink) !important;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
    font-size: 15px;
    letter-spacing: 0;
    text-rendering: optimizeLegibility;
}

body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto;
    z-index: -1;
    height: 320px;
    pointer-events: none;
    background:
        linear-gradient(135deg, rgb(242 237 255 / 88%) 0%, rgb(231 251 242 / 74%) 36%, rgb(255 241 232 / 84%) 70%, rgb(234 247 255 / 78%) 100%);
    clip-path: polygon(0 0, 100% 0, 100% 64%, 0 100%);
}

body::selection {
    background: rgb(75 85 217 / 18%);
}

main {
    width: min(1180px, calc(100vw - 48px)) !important;
    margin: 34px auto 56px !important;
    animation: qsu-rise .34s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes qsu-rise {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1, h2, h3 {
    color: var(--ink);
    letter-spacing: 0 !important;
}

h1 {
    margin: 0 0 8px !important;
    font-size: 32px !important;
    line-height: 1.1;
    font-weight: 850;
    text-wrap: balance;
}

h2 {
    margin: 0 0 18px !important;
    font-size: 18px !important;
    line-height: 1.25;
    font-weight: 820;
}

h3 {
    font-size: 15px !important;
    line-height: 1.35;
    font-weight: 800;
}

p {
    color: var(--muted);
    line-height: 1.55;
}

a {
    color: var(--brand);
    text-underline-offset: 3px;
}

a:hover {
    color: var(--brand-dark);
}

main > p[style] {
    margin-top: 22px !important;
    gap: 10px !important;
}

main > p[style] a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgb(255 255 255 / 76%);
    color: var(--ink) !important;
    font-weight: 780 !important;
    transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

main > p[style] a:hover {
    border-color: var(--line-strong);
    background: var(--butter);
    transform: translateY(-1px);
}

main > .heading,
main > .topbar {
    display: flex !important;
    align-items: flex-end !important;
    justify-content: space-between !important;
    gap: 18px !important;
    margin-bottom: 26px !important;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
}

main > .heading::before,
main > .topbar::before {
    content: "";
    width: 56px;
    height: 5px;
    align-self: flex-start;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--mint-strong), var(--brand));
    order: -1;
    flex: 0 0 auto;
    margin-top: 10px;
}

.subtitle,
.heading p,
.topbar p {
    margin: 0 !important;
    color: var(--muted) !important;
    font-size: 15px;
}

.app-header {
    position: sticky !important;
    top: 0;
    z-index: 40 !important;
    min-height: 68px !important;
    padding: 0 28px !important;
    background: rgb(255 253 248 / 86%) !important;
    border-bottom: 1px solid rgb(221 227 238 / 80%) !important;
    backdrop-filter: blur(18px);
}

.app-header .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink) !important;
    font-size: 16px !important;
    font-weight: 900 !important;
    letter-spacing: 0;
}

.app-header .brand::before {
    content: "Q";
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 7px;
    background: linear-gradient(145deg, var(--brand), var(--accent));
    color: white;
    font-size: 14px;
    box-shadow: 0 8px 18px rgb(77 97 232 / 18%);
}

.app-header nav {
    gap: 3px !important;
    scrollbar-width: none;
}

.app-header nav::-webkit-scrollbar {
    display: none;
}

.app-header nav a {
    min-height: 38px;
    display: inline-flex !important;
    align-items: center;
    border-radius: 7px !important;
    padding: 0 11px !important;
    color: var(--muted) !important;
    font-size: 14px !important;
    font-weight: 760 !important;
    transition: background .16s ease, color .16s ease, transform .16s ease;
}

.app-header nav a:hover {
    background: var(--peach) !important;
    color: var(--ink) !important;
    transform: translateY(-1px);
}

.app-header nav a.active {
    background: linear-gradient(135deg, var(--brand-soft), var(--lavender)) !important;
    color: var(--brand-dark) !important;
    box-shadow: inset 0 0 0 1px rgb(77 97 232 / 10%);
}

.app-header button {
    height: 38px !important;
    border-radius: 7px !important;
    border: 1px solid var(--line) !important;
    background: #fff !important;
    color: var(--ink) !important;
    font-weight: 780 !important;
    box-shadow: none !important;
    transition: border-color .16s ease, transform .16s ease;
}

.app-header button:hover {
    border-color: var(--accent) !important;
    color: var(--accent-dark) !important;
    transform: translateY(-1px);
}

section,
.metric,
.course,
.subpanel,
.registration-line,
main > form,
.empty,
table,
.contact-card,
.payment-item {
    border-color: var(--line) !important;
    border-radius: var(--radius) !important;
}

section,
.metric,
.course,
.subpanel,
.payment-item,
main > form {
    background: var(--panel) !important;
    box-shadow: 0 1px 0 rgb(15 23 42 / 3%), 0 12px 26px rgb(57 50 88 / 4%) !important;
}

section {
    padding: 22px !important;
    position: relative;
    overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

section::before,
.course::before,
.payment-item::before,
main > form::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 4px;
    background: linear-gradient(90deg, var(--lavender-strong), var(--mint-strong), var(--peach-strong));
    opacity: .88;
}

section:hover,
.course:hover,
.payment-item:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong) !important;
    box-shadow: var(--shadow) !important;
}

section:nth-of-type(3n + 1)::before {
    background: linear-gradient(90deg, var(--brand), var(--sky-strong));
}

section:nth-of-type(3n + 2)::before {
    background: linear-gradient(90deg, var(--accent), var(--peach-strong));
}

section:nth-of-type(3n + 3)::before {
    background: linear-gradient(90deg, var(--mint-strong), var(--butter-strong));
}

.layout {
    gap: 22px !important;
}

.metrics {
    gap: 14px !important;
}

.metric {
    padding: 22px !important;
    min-height: 132px;
    display: grid;
    align-content: space-between;
    position: relative;
    overflow: hidden;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.metric::after {
    content: "";
    position: absolute;
    inset: auto 18px 16px auto;
    width: 42px;
    height: 6px;
    border-radius: 999px;
    background: rgb(255 255 255 / 72%);
}

.metric:nth-child(1) {
    background: linear-gradient(145deg, var(--lavender), #fff) !important;
    border-color: #ded5ff !important;
}

.metric:nth-child(2) {
    background: linear-gradient(145deg, var(--mint), #fff) !important;
    border-color: #c8efd9 !important;
}

.metric:nth-child(3) {
    background: linear-gradient(145deg, var(--peach), #fff) !important;
    border-color: #ffd8bf !important;
}

.metric:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong) !important;
    box-shadow: var(--shadow) !important;
}

.metric span,
label,
th,
dt {
    color: var(--muted) !important;
    font-size: 12px !important;
    font-weight: 780 !important;
    letter-spacing: 0 !important;
}

.metric strong {
    font-size: 34px !important;
    line-height: 1;
    color: var(--ink);
}

table {
    width: 100%;
    overflow: hidden;
    background: var(--panel) !important;
    border-collapse: separate !important;
    border-spacing: 0 !important;
}

th {
    height: 42px;
    padding: 0 16px !important;
    background: linear-gradient(180deg, var(--sky), var(--panel-soft));
    border-bottom: 1px solid var(--line) !important;
    text-transform: uppercase;
}

td {
    padding: 14px 16px !important;
    border-bottom: 1px solid var(--line) !important;
    color: var(--ink);
    vertical-align: middle;
}

tbody tr {
    transition: background .14s ease, transform .14s ease;
}

tbody tr:hover {
    background: #fffaf0;
}

tbody tr:last-child td {
    border-bottom: 0 !important;
}

input:not([type="radio"]):not([type="checkbox"]):not([type="hidden"]),
select,
textarea {
    min-height: 42px;
    border: 1px solid var(--line) !important;
    border-radius: 7px !important;
    background: rgb(255 255 255 / 88%) !important;
    color: var(--ink) !important;
    font: inherit !important;
    transition: border-color .16s ease, box-shadow .16s ease, background .16s ease;
}

input:not([type="radio"]):not([type="checkbox"]):not([type="hidden"]):focus,
select:focus,
textarea:focus {
    outline: 0 !important;
    border-color: var(--brand) !important;
    box-shadow: 0 0 0 4px rgb(77 97 232 / 14%), 0 10px 20px rgb(77 97 232 / 8%) !important;
}

textarea {
    line-height: 1.45;
}

button,
.button,
.small-button {
    min-height: 40px;
    border-radius: 7px !important;
    font-weight: 820 !important;
    letter-spacing: 0 !important;
    text-decoration: none !important;
    transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease, box-shadow .16s ease;
}

button:not(.secondary):not(.danger):not(.small-button),
.button:not(.secondary):not(.danger),
.small-button:not(.danger) {
    border: 1px solid var(--brand-dark) !important;
    background: linear-gradient(135deg, var(--brand), #6d7cff) !important;
    color: white !important;
    box-shadow: 0 10px 22px rgb(77 97 232 / 16%);
}

button:not(.secondary):not(.danger):not(.small-button):hover,
.button:not(.secondary):not(.danger):hover,
.small-button:not(.danger):hover {
    background: linear-gradient(135deg, var(--brand-dark), var(--accent)) !important;
    border-color: var(--brand-dark) !important;
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgb(75 85 217 / 16%);
}

button.secondary,
.button.secondary,
.small-button,
.remove-line,
.add-line {
    border: 1px solid var(--line) !important;
    background: rgb(255 255 255 / 82%) !important;
    color: var(--ink) !important;
}

button.secondary:hover,
.button.secondary:hover,
.small-button:hover,
.remove-line:hover,
.add-line:hover {
    border-color: var(--accent) !important;
    background: var(--peach) !important;
    color: var(--accent-dark) !important;
    transform: translateY(-1px);
}

button.danger,
.button.danger,
.small-button.danger {
    border-color: #efc5c5 !important;
    background: var(--danger-bg) !important;
    color: var(--danger) !important;
}

button.danger:hover,
.button.danger:hover,
.small-button.danger:hover {
    border-color: #e5a8a8 !important;
    background: #ffe8e8 !important;
}

.notice,
.message,
.empty {
    border-radius: var(--radius) !important;
    border: 1px solid var(--line) !important;
    box-shadow: none !important;
}

.notice {
    background: linear-gradient(135deg, var(--success-bg), #fff) !important;
    border-color: #cdebd9 !important;
    color: var(--success) !important;
}

.notice.error,
.message.error,
.error:not(input):not(select):not(textarea) {
    background: linear-gradient(135deg, var(--danger-bg), #fff) !important;
    border-color: #efc5c5 !important;
    color: var(--danger) !important;
}

.message.success {
    background: var(--success-bg) !important;
    color: var(--success) !important;
}

.status,
.badge {
    min-height: 28px !important;
    border-radius: 999px !important;
    padding: 0 10px !important;
    font-size: 12px !important;
    font-weight: 850 !important;
    border: 1px solid var(--line) !important;
    background: var(--panel-soft) !important;
    color: var(--muted) !important;
}

.status.is-success,
.badge.on {
    border-color: #9ee5bf !important;
    background: linear-gradient(135deg, var(--success-bg), #f7fff9) !important;
    color: var(--success) !important;
}

.status.is-warning {
    border-color: #f0cf62 !important;
    background: linear-gradient(135deg, var(--warning-bg), #fffdf2) !important;
    color: var(--warning) !important;
}

.status.is-info,
.status.is-partial {
    border-color: #b8c2ff !important;
    background: linear-gradient(135deg, var(--brand-soft), var(--sky)) !important;
    color: var(--brand-dark) !important;
}

.status.is-danger,
.badge.off {
    border-color: #f3b1c9 !important;
    background: linear-gradient(135deg, var(--danger-bg), #fff) !important;
    color: var(--danger) !important;
}

.status.is-muted {
    color: var(--muted) !important;
}

.radio-item {
    border-radius: 7px !important;
    border-color: var(--line) !important;
    background: rgb(255 255 255 / 82%) !important;
    transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

.radio-item input[type="radio"],
.check input[type="checkbox"],
input[type="checkbox"],
input[type="radio"] {
    width: auto !important;
    min-height: auto !important;
    height: auto !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    accent-color: var(--brand);
}

.radio-item:hover,
.radio-item:has(input:checked) {
    border-color: var(--brand) !important;
    background: linear-gradient(135deg, var(--brand-soft), var(--sky)) !important;
    transform: translateY(-1px);
}

.line-heading {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
}

.registration-line {
    background: linear-gradient(135deg, var(--panel-soft), var(--sky)) !important;
    padding: 18px !important;
}

.price-summary {
    color: var(--accent-dark) !important;
    font-weight: 850 !important;
}

.actions,
.checkout-actions,
.row-actions,
.account-actions {
    gap: 10px !important;
}

.total strong {
    font-size: 30px !important;
    line-height: 1.1;
    color: var(--brand-dark);
}

.payment-head {
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.course-selector,
.catalog-import,
.danger-zone {
    background: linear-gradient(135deg, var(--panel-soft), var(--lavender)) !important;
}

.course-head {
    border-bottom: 1px solid var(--line);
    margin-bottom: 18px;
    padding-bottom: 16px;
}

.login-page {
    display: grid !important;
    place-items: center;
    padding: 28px;
    background:
        linear-gradient(135deg, var(--lavender) 0%, var(--sky) 42%, var(--peach) 100%) !important;
}

.login-page main {
    width: min(420px, calc(100vw - 32px)) !important;
    margin: 0 !important;
    background: var(--panel) !important;
    border: 1px solid var(--line) !important;
    border-radius: var(--radius) !important;
    padding: 34px !important;
    box-shadow: var(--shadow) !important;
}

.login-page h1::before {
    content: "Q";
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    margin-bottom: 18px;
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--brand), var(--accent));
    color: white;
    font-size: 18px;
}

.public-page header,
.return-page main {
    background: rgb(255 253 248 / 88%) !important;
    backdrop-filter: blur(16px);
}

.public-page header {
    position: sticky;
    top: 0;
    z-index: 20;
}

.public-page main {
    width: min(1040px, calc(100vw - 48px)) !important;
}

.public-page main > h1 {
    font-size: 38px !important;
    color: var(--brand-dark);
}

.public-page main > p {
    max-width: 560px;
}

@media (max-width: 900px) {
    main {
        width: min(100% - 32px, 100%) !important;
        margin-top: 24px !important;
    }

    .layout,
    .columns,
    .metrics {
        grid-template-columns: 1fr !important;
    }

    main > .heading,
    main > .topbar {
        align-items: flex-start !important;
        flex-direction: column;
    }
}

@media (max-width: 760px) {
    body {
        background:
            linear-gradient(180deg, rgb(242 237 255 / 56%) 0, var(--bg) 260px) !important;
    }

    main {
        width: min(100% - 24px, 100%) !important;
        margin: 18px auto 42px !important;
    }

    h1 {
        font-size: 27px !important;
    }

    section {
        padding: 18px !important;
    }

    .app-header {
        padding: 10px 14px !important;
        background: rgb(255 253 248 / 94%) !important;
    }

    .app-header .menu-button {
        border-radius: 7px !important;
        border-color: var(--line) !important;
        background: #fff !important;
    }

    .app-header .nav-panel {
        transition: grid-template-rows .22s ease !important;
    }

    .app-header nav {
        padding-top: 10px !important;
    }

    .app-header nav a {
        min-height: 44px !important;
        border: 1px solid transparent;
    }

    .app-header nav a.active {
        border-color: #d6dbff;
    }

    table {
        display: block !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        border: 1px solid var(--line);
    }

    th,
    td {
        white-space: nowrap;
    }

    .actions {
        align-items: stretch !important;
        flex-direction: column;
    }

    .actions > *,
    .checkout-actions > *,
    .button,
    button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: no-preference) {
    section,
    .metric,
    .course,
    .payment-item,
    table {
        animation: qsu-pop .42s cubic-bezier(.2, .8, .2, 1) both;
    }

    section:nth-of-type(2),
    .metric:nth-child(2) {
        animation-delay: .04s;
    }

    section:nth-of-type(3),
    .metric:nth-child(3) {
        animation-delay: .08s;
    }

    .app-header .brand::before {
        animation: qsu-pulse 4.8s ease-in-out infinite;
    }
}

@keyframes qsu-pop {
    from {
        opacity: 0;
        transform: translateY(12px) scale(.992);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes qsu-pulse {
    0%, 100% {
        transform: translateY(0);
        box-shadow: 0 8px 18px rgb(77 97 232 / 18%);
    }
    50% {
        transform: translateY(-1px);
        box-shadow: 0 14px 26px rgb(255 122 89 / 22%);
    }
}