:root {
    --stp-navy: #062f3b;
    --stp-teal: #078b90;
    --stp-teal-light: #55b8b6;
    --stp-cream: #fbf8ef;
    --stp-gold: #d5a62e;
    --stp-coral: #ff614b;
    --stp-ink: #173f49;
    --stp-muted: #607780;
    --stp-line: #cce2df;
    --stp-white: #fff;
    --stp-danger: #b5353f;
    --stp-success: #087b60;
}

.stp-shell,
.stp-admin {
    color: var(--stp-ink);
    font-family: inherit;
    margin: 0 auto;
    max-width: 1320px;
    padding: clamp(18px, 4vw, 54px);
}

.stp-shell *,
.stp-admin * {
    box-sizing: border-box;
}

.stp-hero,
.stp-result-hero,
.stp-admin-hero {
    align-items: center;
    background:
        radial-gradient(circle at 88% 20%, rgba(255, 255, 255, .13) 0 85px, transparent 86px),
        linear-gradient(125deg, #053e49, #078b90);
    border-radius: 30px;
    color: var(--stp-white);
    display: grid;
    gap: 32px;
    grid-template-columns: minmax(0, 1fr) auto;
    overflow: hidden;
    padding: clamp(30px, 6vw, 72px);
}

.stp-hero h1,
.stp-result-hero h1,
.stp-admin-hero h1 {
    color: inherit;
    font-size: clamp(2.2rem, 6vw, 5rem);
    letter-spacing: -.055em;
    line-height: .98;
    margin: 10px 0 22px;
    max-width: 900px;
}

.stp-hero p,
.stp-result-hero p,
.stp-admin-hero p {
    color: rgba(255, 255, 255, .88);
    font-size: clamp(1rem, 2vw, 1.3rem);
    line-height: 1.65;
    margin: 0;
    max-width: 760px;
}

.stp-eyebrow {
    color: var(--stp-teal);
    display: block;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .18em;
    text-transform: uppercase;
}

.stp-hero .stp-eyebrow,
.stp-result-hero .stp-eyebrow,
.stp-admin-hero .stp-eyebrow {
    color: #8ee2dc;
}

.stp-hero-badge {
    align-items: center;
    aspect-ratio: 1;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .26);
    border-radius: 999px;
    display: flex;
    flex-direction: column;
    font-size: clamp(2rem, 6vw, 4.8rem);
    font-weight: 800;
    justify-content: center;
    min-width: 190px;
    padding: 24px;
}

.stp-hero-badge span {
    color: var(--stp-gold);
    font-size: .65em;
    line-height: .6;
}

.stp-panel,
.stp-review {
    background: var(--stp-white);
    border: 1px solid var(--stp-line);
    border-radius: 28px;
    box-shadow: 0 18px 55px rgba(6, 47, 59, .08);
    margin-top: 30px;
    padding: clamp(24px, 5vw, 54px);
}

.stp-section-heading {
    align-items: end;
    display: flex;
    justify-content: space-between;
    margin-bottom: 28px;
}

.stp-section-heading h2 {
    color: var(--stp-navy);
    font-size: clamp(1.65rem, 4vw, 3rem);
    letter-spacing: -.035em;
    margin: 8px 0 0;
}

.stp-start-form {
    display: grid;
    gap: 24px;
}

.stp-start-form > label,
.stp-start-form legend,
.stp-admin label {
    color: var(--stp-navy);
    display: block;
    font-weight: 750;
    margin-bottom: 8px;
}

.stp-start-form select,
.stp-admin input[type="file"] {
    background: var(--stp-white);
    border: 2px solid var(--stp-line);
    border-radius: 14px;
    color: var(--stp-ink);
    font: inherit;
    min-height: 52px;
    padding: 11px 14px;
    width: 100%;
}

.stp-start-form select:focus,
.stp-admin input:focus {
    border-color: var(--stp-teal);
    box-shadow: 0 0 0 4px rgba(7, 139, 144, .12);
    outline: none;
}

.stp-start-form fieldset,
.stp-choices {
    border: 0;
    margin: 0;
    padding: 0;
}

.stp-size-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stp-size-option {
    cursor: pointer;
    margin: 0;
}

.stp-size-option input {
    opacity: 0;
    position: absolute;
}

.stp-size-option span {
    align-items: center;
    background: #f5faf9;
    border: 2px solid var(--stp-line);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    min-height: 76px;
    transition: .2s ease;
}

.stp-size-option strong {
    font-size: 1.55rem;
}

.stp-size-option input:checked + span {
    background: var(--stp-navy);
    border-color: var(--stp-navy);
    color: var(--stp-white);
    transform: translateY(-2px);
}

.stp-size-option input:focus-visible + span {
    box-shadow: 0 0 0 4px rgba(7, 139, 144, .2);
}

.stp-size-option.is-disabled {
    cursor: not-allowed;
    opacity: .35;
}

.stp-availability {
    color: var(--stp-muted);
    margin: 9px 0 0;
}

.stp-assurance {
    background: var(--stp-cream);
    border-inline-start: 5px solid var(--stp-gold);
    border-radius: 12px;
    padding: 15px 18px;
}

.stp-assurance p {
    margin: 0;
}

.stp-button {
    align-items: center;
    border: 2px solid transparent;
    border-radius: 13px;
    cursor: pointer;
    display: inline-flex;
    font-size: 1rem;
    font-weight: 800;
    justify-content: center;
    min-height: 50px;
    padding: 12px 22px;
    text-decoration: none;
    transition: .2s ease;
}

.stp-button:hover {
    filter: brightness(1.06);
    transform: translateY(-2px);
}

.stp-button-primary {
    background: linear-gradient(120deg, #06797f, #0b9aa0);
    color: var(--stp-white);
}

.stp-button-secondary {
    background: var(--stp-white);
    border-color: var(--stp-teal);
    color: var(--stp-teal);
}

.stp-button-finish {
    background: var(--stp-coral);
    color: var(--stp-white);
}

.stp-start-form > .stp-button {
    justify-self: start;
}

.stp-empty {
    background: #f5faf9;
    border: 2px dashed var(--stp-line);
    border-radius: 18px;
    padding: 38px;
    text-align: center;
}

.stp-exam-shell {
    max-width: 1000px;
}

.stp-exam-header {
    display: grid;
    grid-template-columns: 1fr auto;
    margin-bottom: 22px;
}

.stp-exam-header h1 {
    color: var(--stp-navy);
    margin: 5px 0 12px;
}

.stp-progress-copy {
    align-self: end;
    color: var(--stp-teal);
    font-weight: 800;
    margin-bottom: 12px;
}

.stp-progress {
    background: #dcecea;
    border-radius: 99px;
    grid-column: 1 / -1;
    height: 10px;
    overflow: hidden;
}

.stp-progress span {
    background: linear-gradient(90deg, var(--stp-teal), var(--stp-gold));
    display: block;
    height: 100%;
}

.stp-question-card {
    background: var(--stp-white);
    border: 1px solid var(--stp-line);
    border-radius: 24px;
    box-shadow: 0 16px 50px rgba(6, 47, 59, .08);
    padding: clamp(24px, 5vw, 52px);
}

.stp-question-card h2 {
    color: var(--stp-navy);
    font-size: clamp(1.35rem, 3vw, 2rem);
    line-height: 1.42;
    margin: 0 0 28px;
}

.stp-choices {
    display: grid;
    gap: 13px;
}

.stp-choice {
    align-items: center;
    background: #f8fbfb;
    border: 2px solid var(--stp-line);
    border-radius: 16px;
    cursor: pointer;
    display: grid;
    gap: 14px;
    grid-template-columns: auto 1fr;
    line-height: 1.45;
    margin: 0;
    min-height: 64px;
    padding: 12px 17px;
}

.stp-choice:has(input:checked) {
    background: #e7f7f5;
    border-color: var(--stp-teal);
}

.stp-choice input {
    opacity: 0;
    position: absolute;
}

.stp-choice-letter {
    align-items: center;
    background: var(--stp-white);
    border: 1px solid var(--stp-line);
    border-radius: 10px;
    display: flex;
    font-weight: 800;
    height: 38px;
    justify-content: center;
    width: 38px;
}

.stp-exam-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-content: space-between;
    margin-top: 30px;
}

.stp-exam-actions .stp-button:last-child {
    justify-self: end;
}

.stp-result-hero {
    grid-template-columns: auto minmax(0, 1fr);
}

.stp-score-ring {
    --score: 0;
    align-items: center;
    aspect-ratio: 1;
    background:
        radial-gradient(circle closest-side, var(--stp-navy) 78%, transparent 79% 100%),
        conic-gradient(var(--stp-gold) calc(var(--score) * 1%), rgba(255,255,255,.15) 0);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 230px;
}

.stp-score-ring strong {
    color: var(--stp-white);
    font-size: 3rem;
}

.stp-score-ring span {
    color: rgba(255,255,255,.75);
}

.stp-result-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 24px 0;
}

.stp-result-stats span {
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 99px;
    padding: 8px 13px;
}

.stp-review-item {
    border: 1px solid var(--stp-line);
    border-inline-start: 6px solid var(--stp-danger);
    border-radius: 16px;
    display: grid;
    gap: 16px;
    grid-template-columns: auto 1fr;
    margin-top: 15px;
    padding: 20px;
}

.stp-review-item.is-correct {
    border-inline-start-color: var(--stp-success);
}

.stp-review-number {
    align-items: center;
    background: #edf6f5;
    border-radius: 50%;
    display: flex;
    font-weight: 800;
    height: 38px;
    justify-content: center;
    width: 38px;
}

.stp-review-item h3 {
    color: var(--stp-navy);
    font-size: 1.05rem;
    line-height: 1.5;
    margin: 4px 0 14px;
}

.stp-review-item dl {
    display: grid;
    gap: 10px;
    margin: 0;
}

.stp-review-item dl div {
    display: grid;
    gap: 8px;
    grid-template-columns: minmax(120px, .25fr) 1fr;
}

.stp-review-item dt {
    color: var(--stp-muted);
    font-weight: 700;
}

.stp-review-item dd {
    margin: 0;
}

.stp-explanation {
    background: #f6faf9;
    border-radius: 10px;
    margin-top: 14px;
    padding: 14px;
}

.stp-explanation p,
.stp-source {
    margin: 5px 0 0;
}

.stp-source {
    color: var(--stp-muted);
    font-size: .88rem;
}

.stp-admin {
    max-width: 1500px;
}

.stp-admin-hero h1 {
    font-size: clamp(2rem, 4vw, 4rem);
}

.stp-admin-stats {
    display: grid;
    gap: 15px;
    grid-template-columns: repeat(4, 1fr);
    margin: 24px 0;
}

.stp-admin-stats div,
.stp-admin-card {
    background: var(--stp-white);
    border: 1px solid var(--stp-line);
    border-radius: 18px;
    padding: 22px;
}

.stp-admin-stats strong {
    color: var(--stp-teal);
    display: block;
    font-size: 2rem;
}

.stp-admin-stats span {
    color: var(--stp-muted);
}

.stp-admin-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
}

.stp-admin-card form {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.stp-admin-attestation {
    align-items: start;
    background: var(--stp-cream);
    border-radius: 12px;
    display: grid !important;
    gap: 10px;
    grid-template-columns: auto 1fr;
    padding: 15px;
}

.stp-admin-card details {
    margin-top: 18px;
}

.stp-admin-card code {
    display: block;
    margin-top: 10px;
    overflow-wrap: anywhere;
    white-space: normal;
}

.stp-admin-table-wrap {
    overflow-x: auto;
}

html[dir="rtl"] .stp-review-item,
html[dir="rtl"] .stp-assurance {
    border-left-width: 1px;
    border-right-width: 5px;
}

@media (max-width: 760px) {
    .stp-shell,
    .stp-admin {
        padding: 14px;
    }

    .stp-hero,
    .stp-result-hero,
    .stp-admin-hero {
        border-radius: 20px;
        grid-template-columns: 1fr;
        padding: 30px 22px;
    }

    .stp-hero-badge {
        aspect-ratio: auto;
        flex-direction: row;
        gap: 12px;
        min-width: 0;
    }

    .stp-panel,
    .stp-review,
    .stp-question-card {
        border-radius: 18px;
        padding: 20px 16px;
    }

    .stp-size-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stp-result-hero {
        justify-items: start;
    }

    .stp-score-ring {
        min-width: min(210px, 70vw);
    }

    .stp-review-item {
        grid-template-columns: 1fr;
    }

    .stp-review-item dl div {
        grid-template-columns: 1fr;
    }

    .stp-exam-actions {
        gap: 10px;
    }

    .stp-exam-actions .stp-button {
        width: 100%;
    }

    .stp-admin-stats {
        grid-template-columns: 1fr 1fr;
    }

    .stp-admin-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 420px) {
    .stp-size-grid,
    .stp-admin-stats {
        grid-template-columns: 1fr;
    }

    .stp-exam-actions {
        grid-template-columns: 1fr;
    }

    .stp-exam-actions span {
        display: none;
    }

    .stp-exam-actions .stp-button:last-child {
        justify-self: stretch;
    }
}