/* ---------- My tests page (mobile first) ---------- */

.mt-root {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    box-sizing: border-box;
}

.mt-breadcrumbs-container {
    display: flex;
    flex-direction: row;
    gap: 8px;
}

.mt-title {
    font-family: var(--third-family);
    color: var(--text-dark-color);
    font-weight: 600;
    font-size: 24px;
    line-height: 1.25;
    margin: 0;
}

.mt-sections {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.mt-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    min-width: 0;
}

.mt-section-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
}

.mt-section-title-link {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: inherit;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    min-width: 0;
}

.mt-section-title {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 18px;
    line-height: 28px;
    color: var(--text-dark-color);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mt-section-chevron {
    flex: 0 0 auto;
    color: var(--text-gray-color);
    display: inline-flex;
    align-items: center;
}

.mt-section-actions {
    display: flex;
    flex-direction: row;
    gap: 8px;
    align-items: center;
}

.mt-icon-action {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: none;
    background: var(--gray-200);
    color: var(--text-gray-dark-color);
    cursor: pointer;
    padding: 0;
    transition: background-color .15s ease;
}

    .mt-icon-action:hover:not(:disabled) {
        background: var(--gray-300);
    }

    .mt-icon-action:disabled {
        cursor: default;
        opacity: .45;
    }

.mt-scroller {
    display: flex;
    flex-direction: row;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

    .mt-scroller::-webkit-scrollbar {
        display: none;
    }

    .mt-scroller > * {
        scroll-snap-align: start;
    }

.mt-empty {
    width: 100%;
    padding: 24px;
    border-radius: 16px;
    background: var(--gray-200);
    color: var(--gray-500);
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
    text-align: center;
    box-sizing: border-box;
}

.mt-empty--all {
    padding: 48px 24px;
    font-size: 16px;
    color: var(--gray-600);
}

.mt-auth-required {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px 16px;
    text-align: center;
}

.mt-auth-required-title {
    font-family: var(--third-family);
    font-weight: 600;
    font-size: 24px;
    color: var(--text-dark-color);
    margin: 0;
}

.mt-auth-required-sub {
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
    color: var(--gray-500);
    max-width: 420px;
    margin: 0;
}

.mt-auth-required-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 320px;
}

/* ---------- Test card mini ---------- */

.test-card-mini {
    position: relative;
    flex: 0 0 auto;
    width: 272px;
    min-height: 108px;
    /* Design cap: card must not grow taller than 112px regardless of content. */
    max-height: 112px;
    border-radius: 16px;
    padding: 12px;
    box-sizing: border-box;
    background: #1CCD9D;
    color: #FFFFFF;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease;
    box-shadow: 0 4px 12px rgba(22, 30, 57, .12);
}

    .test-card-mini:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(22, 30, 57, .20);
    }

    .test-card-mini:focus-visible {
        outline: 2px solid var(--blue-color);
        outline-offset: 2px;
    }

.test-card-mini__bg {
    position: absolute;
    top: 0;
    right: 0;
    height: 100%;
    max-height: 112px;
    width: auto;
    object-fit: contain;
    object-position: right top;
    pointer-events: none;
    opacity: .85;
    z-index: 0;
}

.test-card-mini > :not(.test-card-mini__bg) {
    position: relative;
    z-index: 1;
}

.test-card-mini__top {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}

.test-card-mini__theme {
    background: #FFFFFF;
    color: #161E27;
    padding: 4px 6px;
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.2;
    max-width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.test-card-mini__theme--muted {
    background: rgba(255, 255, 255, .22);
    color: #FFFFFF;
    font-weight: 500;
}

.test-card-mini__draft {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #FFFFFF;
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 11px;
    opacity: .95;
}

    .test-card-mini__draft svg {
        flex: 0 0 auto;
    }

.test-card-mini__title {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 15px;
    line-height: 1.25;
    color: #FFFFFF;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.test-card-mini__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-family: var(--font-family);
    font-size: 12px;
    font-weight: 500;
}

.test-card-mini__questions {
    color: #FFFFFF;
    opacity: .95;
}

.test-card-mini__metrics {
    display: flex;
    gap: 12px;
}

.test-card-mini__metric {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #FFFFFF;
}

/* The "like" metric is a real button — reset default chrome and add
   a couple of affordances (hover, pressed). */
.test-card-mini__metric--like {
    background: transparent;
    border: none;
    padding: 2px 4px;
    margin: -2px -4px; /* keep hit-target tight against other metrics */
    border-radius: 6px;
    cursor: pointer;
    color: #FFFFFF;
    font: inherit;
    transition: background-color .15s ease, transform .1s ease;
}

    .test-card-mini__metric--like:hover:not(:disabled) {
        background: rgba(255, 255, 255, .15);
    }

    .test-card-mini__metric--like:active:not(:disabled) {
        transform: scale(.92);
    }

    .test-card-mini__metric--like:disabled {
        cursor: default;
        opacity: .7;
    }

.test-card-mini__metric--liked svg {
    /* Slightly pop the heart when it's currently liked. */
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .25));
}

.test-card-mini--removed {
    opacity: .7;
}

/* ---------- Collection card mini ---------- */

.collection-card-mini {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    box-sizing: border-box;
    flex: 0 0 auto;
    width: 272px;
    min-height: 72px;
    padding: 0 8px 0 0;
    background: #FFFFFF;
    border-radius: 16px;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease;
    box-shadow: 0 2px 8px rgba(22, 30, 57, .06);
}

    .collection-card-mini:hover {
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(22, 30, 57, .12);
    }

    .collection-card-mini:focus-visible {
        outline: 2px solid var(--blue-color);
        outline-offset: 2px;
    }

.collection-card-mini__cover {
    flex: 0 0 auto;
    width: 72px;
    height: 72px;
    border-radius: 16px;
    background: #1CCD9D;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.collection-card-mini__cover-icon {
    max-width: 70%;
    max-height: 70%;
    object-fit: contain;
    opacity: 1;
    pointer-events: none;
}

.collection-card-mini__info {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.collection-card-mini__title {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 16px;
    line-height: 20px;
    color: var(--text-gray-dark-color);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.collection-card-mini__subtitle {
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
    line-height: 16px;
    color: var(--gray-600);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.collection-card-mini__chevron {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    color: var(--gray-500);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
}

.mt-collections-grid {
    width: 100%;
}

/* ---------- Tablet ---------- */
@media (min-width: 768px) {

    .mt-root {
        gap: 24px;
        padding: 0px 22px;
        height: 100%;
        max-height: 100%;
        overflow-y: auto;
        overflow-x: hidden;
        padding-bottom: 16px;
        /* Hide the scrollbar chrome but keep the container scrollable. */
        scrollbar-width: thin;
    }

        .mt-root::-webkit-scrollbar {
            width: 6px;
        }

        .mt-root::-webkit-scrollbar-thumb {
            background-color: rgba(135, 148, 168, .35);
            border-radius: 6px;
        }

        .mt-root::-webkit-scrollbar-thumb:hover {
            background-color: rgba(135, 148, 168, .55);
        }

    .mt-title {
        font-size: 28px;
    }

    .mt-section-title {
        font-size: 20px;
    }

    .test-card-mini {
        width: 303px;
        min-height: 112px;
        max-height: 112px;
        padding: 16px;
        border-radius: 20px;
    }

    .test-card-mini__bg {
        max-height: 120px;
    }

    .test-card-mini__title {
        font-size: 16px;
    }

    .collection-card-mini {
        width: 100%;
        min-height: 96px;
        border-radius: 20px;
    }

    .collection-card-mini__cover {
        width: 96px;
        height: 96px;
        border-radius: 20px;
    }

    .mt-scroller.mt-collections-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px;
        overflow-x: visible;
        overflow-y: visible;
        scroll-snap-type: none;
        padding-bottom: 0;
    }

    /* Arrow buttons are meaningless once items flow in a grid. */
    .mt-collections-actions {
        display: none;
    }
}

/* ---------- Desktop ---------- */
@media (min-width: 1024px) {

    .mt-title {
        font-size: 32px;
    }

    .mt-section-title {
        font-size: 20px;
    }

    .mt-scroller.mt-collections-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.mt-root--list {
    gap: 16px;
    padding-left: 16px;
    padding-right: 16px;
    padding-bottom: 24px;
}

.mt-list-header {
    display: grid;
    grid-template-areas:
        "back title"
        "search search";
    grid-template-columns: auto 1fr;
    row-gap: 12px;
    column-gap: 12px;
    align-items: center;
    width: 100%;
}

.mt-list-back {
    grid-area: back;
    width: 40px;
    height: 40px;
    flex: 0 0 auto;
}

.mt-list-title {
    grid-area: title;
    font-family: var(--third-family);
    font-weight: 600;
    font-size: 20px;
    line-height: 1.25;
    color: var(--text-dark-color);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.mt-list-search {
    grid-area: search;
    width: 100%;
    max-width: 100%;
}

.mt-list-search-input-wrap {
    position: relative;
    width: 100%;
}

.mt-list-search-icon {
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
    color: var(--gray-500);
    pointer-events: none;
}

.mt-list-search-input {
    box-sizing: border-box;
    width: 100%;
    height: 48px;
    padding: 0 16px 0 40px;
    border-radius: 12px;
    border: 1px solid var(--gray-300);
    background: #FFFFFF;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 15px;
    color: var(--text-dark-color);
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

    .mt-list-search-input::placeholder {
        color: var(--gray-500);
    }

    .mt-list-search-input:focus {
        border-color: var(--blue-color);
        box-shadow: 0 0 0 3px rgba(75, 159, 255, .15);
    }

.mt-tag-row {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    scroll-snap-type: x proximity;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    min-height: 32px;
}

    .mt-tag-row::-webkit-scrollbar {
        display: none;
    }

    .mt-tag-row > * {
        scroll-snap-align: start;
    }

.mt-tag {
    display: inline-flex;
    flex-direction: row;
    flex: 0 0 auto;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 8px;
    border: none;
    background: #F0F0F6;
    color: var(--text-dark-color);
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
    line-height: 20px;
    white-space: nowrap;
    transition: background-color .15s ease, color .15s ease;
}

    .mt-tag:hover {
        background: #E6E7EF;
    }

.mt-tag--active {
    background: var(--blue-color);
    color: #FFFFFF;
}

    .mt-tag--active:hover {
        background: var(--blue-700);
    }

.mt-tag--reset {
    background: transparent;
    color: var(--gray-600);
    text-decoration: underline;
    text-underline-offset: 3px;
    padding: 6px 8px;
}

    .mt-tag--reset:hover {
        background: transparent;
        color: var(--text-dark-color);
    }

.mt-tag__title {
    white-space: nowrap;
}

.mt-tag__x {
    color: currentColor;
    opacity: .85;
    flex: 0 0 auto;
}

/* Card grid — responsive columns. On mobile each card fills the width. */
.mt-list-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    width: 100%;
}

.mt-list-grid__item {
    display: block;
    width: 100%;
    min-width: 0;
}

    .mt-list-grid__item .test-card-mini {
        width: 100%;
        min-height: 108px;
        max-height: 112px;
    }

.mt-list-grid--collections {
}

    .mt-list-grid--collections .collection-card-mini {
        width: 100%;
    }

/* Empty state for the list pages — bigger and centered. */
.mt-list-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 48px 24px;
    text-align: center;
    border-radius: 20px;
    background: var(--gray-200);
    color: var(--gray-600);
}

.mt-list-empty__title {
    font-family: var(--third-family);
    font-weight: 600;
    font-size: 18px;
    color: var(--text-dark-color);
    margin: 0;
}

.mt-list-empty__sub {
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
    color: var(--gray-600);
    margin: 0;
    max-width: 480px;
}

/* ---------- Infinite scroll ---------- */

.infinite-sentinel {
    /* Height > 0 so IntersectionObserver can actually observe it. */
    height: 1px;
    width: 100%;
    pointer-events: none;
}

.mt-list-loader {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px 0;
    color: var(--gray-600);
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 14px;
}

    .mt-list-loader::before {
        content: "";
        display: inline-block;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        border: 2px solid var(--gray-300);
        border-top-color: var(--blue-color);
        animation: mt-list-loader-spin .8s linear infinite;
    }

@keyframes mt-list-loader-spin {
    to { transform: rotate(360deg); }
}

@media (min-width: 640px) {
    .mt-list-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 768px) {

    .mt-root--list {
        margin: 0;
        padding-left: 8px;
        padding-right: 8px;
    }

    .mt-list-header {
        grid-template-areas: "back title search";
        grid-template-columns: auto 1fr auto;
        gap: 16px;
    }

    .mt-list-back {
        width: 48px;
        height: 48px;
    }

    .mt-list-title {
        font-size: 24px;
    }

    .mt-list-search {
        width: 303px;
        max-width: 303px;
    }

    .mt-list-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 16px;
    }

        .mt-list-grid__item .test-card-mini {
            min-height: 108px;
            max-height: 112px;
            padding: 16px;
        }
}

@media (min-width: 1024px) {

    .mt-root--list {
        padding-left: 22px;
        padding-right: 22px;
    }
}

@media (min-width: 1200px) {

    .mt-list-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}