html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

html::-webkit-scrollbar {
    width: 0;
    height: 0;
}

body {
    margin: 0;
    color: var(--color-text-default);
    position: relative;
    overflow-x: hidden;
    background: linear-gradient(180deg, #fff9fd 0%, #f7f3ff 100%);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-attachment: fixed;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(circle at 2% 8%, rgba(255, 215, 238, .34) 0%, rgba(255, 215, 238, 0) 28%),
        radial-gradient(circle at 96% 6%, rgba(232, 221, 255, .3) 0%, rgba(232, 221, 255, 0) 26%);
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

:root {
    /* Core palette */
    --color-white: #fff;
    --color-text-default: #31304a;
    --color-text-strong: #3f3a63;
    --color-text-muted: #7a739e;
    --color-text-subtle: #64748b;
    --color-primary: #9b84ef;
    --color-primary-strong: #7f69d9;
    --color-primary-emphasis: #8068cf;

    /* Surfaces and borders */
    --surface-primary: rgba(255, 255, 255, .9);
    --surface-translucent: rgba(255, 255, 255, .72);
    --surface-translucent-soft: rgba(255, 255, 255, .38);
    --surface-border: #ece6f9;
    --control-border: #d6c8ea;
    --control-border-strong: #cbb9e7;
    --surface-shadow: 0 14px 32px rgba(156, 137, 191, .14);
    --surface-shadow-soft: 0 12px 24px rgba(88, 67, 158, .1);
    --surface-shadow-raised: 0 16px 34px rgba(88, 67, 158, .12);

    /* Interaction */
    --accent-primary: var(--color-primary);
    --ring-focus: 0 0 0 3px rgba(155, 132, 239, .28);
    --ring-focus-color: var(--color-primary-emphasis);
    --control-radius: .65rem;
    --panel-radius: 1rem;
    --pill-radius: 999px;

    /* Semantic states */
    --status-success-text: #15803d;
    --status-success-strong: #16a34a;
    --status-success-surface: rgba(34, 197, 94, .16);
    --status-success-ring: 0 0 0 3px var(--status-success-surface);
    --status-danger-text: #b91c1c;
    --status-danger-strong: #dc2626;
    --status-danger-surface: rgba(239, 68, 68, .14);
    --status-danger-ring: 0 0 0 3px var(--status-danger-surface);
    --status-contested-text: #6d28d9;
    --status-contested-surface: rgba(139, 92, 246, .14);

    /* Exam workspace theme */
    --exam-ink: #302d45;
    --exam-muted: #7d759c;
    --exam-border: #e7e1f7;
    --exam-surface: rgba(255, 255, 255, .82);
    --exam-primary: #8e6be8;
    --exam-primary-strong: #6e49d5;
    --exam-accent: #ff8fca;
    --exam-mint: #63c8c5;

    /* Component aliases */
    --button-radius: .78rem;
    --button-radius-pill: var(--pill-radius);
    --button-primary-bg: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-strong) 100%);
    --button-primary-border: rgba(127, 105, 217, .72);
    --button-primary-shadow: 0 10px 18px rgba(127, 105, 217, .2);
    --button-primary-shadow-hover: 0 14px 24px rgba(127, 105, 217, .26);
    --button-soft-bg: linear-gradient(180deg, var(--color-white) 0%, #fbf8ff 100%);
    --button-soft-bg-active: linear-gradient(180deg, var(--color-white) 0%, #f1ebff 100%);
    --button-soft-border: #ddd1fa;
    --button-soft-text: var(--color-text-strong);
    --button-soft-text-strong: #2f2a51;
    --button-success-bg: linear-gradient(160deg, #43d6a1 0%, #168f73 100%);
    --button-success-border: rgba(22, 143, 115, .62);
}

.page-shared-background {
    position: relative;
}

/* Shared page composition primitives. Page-specific styles should only define
   content that is unique to that page. */
.app-page {
    position: relative;
    min-height: 100vh;
    box-sizing: border-box;
    padding-bottom: var(--page-bottom-space, 0);
}

.app-page--workspace {
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    --page-bottom-space: .5rem;
}

.app-page--catalog::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 8% 18%, rgba(255, 210, 235, .2), transparent 24rem),
        radial-gradient(circle at 92% 32%, rgba(200, 188, 255, .2), transparent 27rem);
}

.page-container {
    width: min(1140px, calc(100% - 2rem));
    margin: 0 auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.page-container--wide {
    width: min(1280px, calc(100% - 2rem));
    position: relative;
}

.page-container--xwide {
    width: min(1320px, calc(100% - 3rem));
}

.page-container--profile {
    width: min(1480px, calc(100% - 3rem));
}

.page-content-stack {
    width: 100%;
    padding-top: .65rem;
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: .7rem;
    min-height: 0;
}

.page-content-stack--centered {
    max-width: var(--page-content-max, 1160px);
    margin: 0 auto;
    padding: 12px var(--page-content-inline, 10px) 0;
    box-sizing: border-box;
}

.data-panel {
    border: 1px solid rgba(222, 213, 240, .92);
    border-radius: var(--panel-radius);
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    flex: 1;
    min-height: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, .74);
    box-shadow: 0 12px 30px rgba(84, 66, 128, .09);
}

.scroll-region {
    min-height: 0;
    overflow-y: auto;
    scrollbar-color: #c9bde5 transparent;
    scrollbar-width: thin;
}

.scroll-region::-webkit-scrollbar {
    width: .42rem;
}

.scroll-region::-webkit-scrollbar-thumb {
    border-radius: var(--pill-radius);
    background: #c9bde5;
}

.page-container > .breadcrumb-nav {
    margin: 18px 0 0;
    display: flex;
    align-items: center;
    gap: .45rem;
    flex-shrink: 0;
    color: #7d88a0;
    font-size: .88rem;
    font-weight: 600;
    line-height: 1.3;
}

.page-container > .breadcrumb-nav a {
    color: #496eb1;
    text-decoration: none;
}

.page-container > .breadcrumb-nav a:hover,
.page-container > .breadcrumb-nav a:focus-visible {
    color: #254d91;
    text-decoration: underline;
}

.page-container > .breadcrumb-nav [aria-current="page"] {
    color: #59677d;
}

.floating-panel {
    border: 1px solid var(--surface-border);
    border-radius: var(--panel-radius);
    background: var(--surface-primary);
    box-shadow: var(--surface-shadow);
    backdrop-filter: blur(3px);
}

.filter-toolbar {
    display: grid;
    gap: .85rem;
    align-items: end;
    border: 1px solid var(--control-border);
    border-radius: .72rem;
    padding: .62rem .85rem;
    background: var(--surface-translucent-soft);
    box-shadow: none;
}

.filter-search-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: .45rem;
    align-items: center;
    width: 100%;
}

.filter-search,
.subject-filter {
    width: 100%;
    min-height: 2.45rem;
    border: 1px solid var(--control-border-strong);
    border-radius: var(--control-radius);
    padding: .38rem .68rem;
    color: var(--color-text-strong);
    background: var(--surface-translucent);
    box-shadow: none;
    font: inherit;
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

.filter-search-button {
    min-height: 2.45rem;
    border: 1px solid var(--button-primary-border);
    border-radius: var(--control-radius);
    padding: .38rem .9rem;
    color: var(--color-white);
    background: var(--button-primary-bg);
    box-shadow: var(--button-primary-shadow);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

.filter-search-button:hover {
    box-shadow: var(--button-primary-shadow-hover);
}

.filter-search-button:focus-visible {
    outline: none;
    box-shadow: var(--ring-focus), var(--button-primary-shadow);
}

.filter-search::placeholder {
    color: #8b82a8;
}

.filter-search:focus,
.subject-filter:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--ring-focus);
}

.pagination-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: .6rem;
    height: 2.5rem;
    box-sizing: border-box;
    margin-top: .4rem;
    padding: 0;
    flex-shrink: 0;
    border-top: 1px solid rgba(125, 120, 151, .2);
    background: #f5f1fa;
    color: #52637a;
    font-size: .88rem;
}

.pagination-nav button {
    min-height: 1.75rem;
    border: 1px solid var(--button-primary-border);
    border-radius: var(--button-radius-pill);
    padding: .18rem .75rem;
    color: #fff;
    background: var(--button-primary-bg);
    box-shadow: var(--button-primary-shadow);
    cursor: pointer;
    font-weight: 800;
    line-height: 1.1;
}

.pagination-nav button:not(:disabled):hover {
    box-shadow: var(--button-primary-shadow-hover);
}

.pagination-nav button:disabled {
    opacity: .45;
    cursor: default;
}

.attempt-card,
.login-card {
    backdrop-filter: blur(3px);
}

.attempt-card,
.login-card {
    border-color: var(--surface-border) !important;
    box-shadow: var(--surface-shadow) !important;
}

button,
a {
    transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

button:hover {
    transform: translateY(-1px);
}

button:disabled {
    transform: none;
}

h1:focus {
    outline: none;
}

a {
    color: var(--color-primary-strong);
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

.loading-progress circle {
    fill: none;
    stroke: #e0e0e0;
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--color-primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

code {
    color: #c02d76;
}

@media (max-width: 820px) {
    .page-container--xwide,
    .page-container--profile {
        width: min(100% - 1.25rem, var(--page-container-max, 1480px));
    }
}

@media (max-width: 780px) {
    .app-page--workspace {
        height: auto;
        min-height: 100vh;
        overflow: visible;
    }

    .page-container--wide {
        width: min(100% - 1.2rem, 720px);
    }

    .data-panel,
    .scroll-region {
        overflow: visible;
    }

    .page-content-stack {
        padding-top: .7rem;
    }
}

@media (max-width: 520px) {
    .page-container--wide {
        width: min(100% - .8rem, 480px);
    }
}