.agfa-quiz {
    border: 1px solid #dcdcde;
    border-radius: 12px;
    padding: 20px;
    background: #fbfbfc;
    max-width: 760px;
    margin: 24px auto;
    position: relative;
    overflow: hidden;
}

.agfa-quiz::after {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    background: radial-gradient(circle at 20% 20%, rgba(34, 113, 177, 0.12), transparent 55%);
}

.agfa-quiz.is-dark {
    background: #0f141a;
    border-color: #1f2933;
    color: #e6edf3;
}

.agfa-quiz.is-dark::after {
    background: radial-gradient(circle at 20% 20%, rgba(56, 139, 253, 0.18), transparent 55%);
}

.agfa-quiz.is-dark .agfa-progress {
    color: #c9d4df;
}

.agfa-quiz.is-dark .agfa-stage-label {
    background: #1b232d;
    border: 1px solid #2b3643;
    color: #c9d4df;
}

.agfa-quiz.is-dark .agfa-english,
.agfa-quiz.is-dark .agfa-prompt,
.agfa-quiz.is-dark .agfa-reference,
.agfa-quiz.is-dark .agfa-feedback,
.agfa-quiz.is-dark .agfa-hint {
    color: #e6edf3;
}

.agfa-quiz.is-dark .agfa-hint {
    color: #9fb1c3;
}

.agfa-quiz.is-dark .agfa-option,
.agfa-quiz.is-dark .agfa-letter,
.agfa-quiz.is-dark .agfa-spell-controls button,
.agfa-quiz.is-dark .agfa-primary,
.agfa-quiz.is-dark .agfa-secondary,
.agfa-quiz.is-dark .agfa-restart,
.agfa-quiz.is-dark .agfa-fullscreen,
.agfa-quiz.is-dark .agfa-dark-toggle {
    background: #141b22;
    color: #e6edf3;
    border-color: #2b3643;
}

.agfa-quiz.is-dark .agfa-primary,
.agfa-quiz.is-dark .agfa-secondary,
.agfa-quiz.is-dark .agfa-restart {
    background: #1f6feb;
    color: #fff;
    border: none;
}

.agfa-quiz.is-dark .agfa-primary:disabled {
    background: #3a4b5c;
    color: #c2ccd6;
}

.agfa-quiz.is-dark .agfa-audio-word {
    background: #141b22;
    color: #8cb4ff;
    border-color: #2b3643;
}

.agfa-quiz.is-dark .agfa-option.is-selected {
    border-color: #4c8dff;
    box-shadow: 0 0 0 2px rgba(76, 141, 255, 0.25);
}

.agfa-quiz.is-dark .agfa-spell-slot {
    border-color: #2b3643;
    color: #e6edf3;
}

.agfa-quiz.is-dark .agfa-complete {
    background: #141b22;
    border-color: #2b3643;
}

.agfa-quiz.is-dark .agfa-image {
    border-color: #2b3643;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
}

.agfa-quiz.is-dark .agfa-letter.is-used {
    background: #0f151c;
    color: #6f7b88;
    border-color: #3a4b5c;
}

.agfa-quiz.is-transition::after {
    animation: agfa-pulse 0.6s ease;
}

.agfa-quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    color: #50575e;
    font-size: 13px;
    gap: 8px;
    flex-wrap: wrap;
}

.agfa-stage-label {
    padding: 4px 10px;
    background: #f0f2f4;
    border-radius: 999px;
    font-size: 12px;
    color: #1d2327;
}

.agfa-fullscreen {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 12px;
    color: #1d2327;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.agfa-fullscreen:active {
    transform: scale(0.98);
}

.agfa-dark-toggle {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 12px;
    color: #1d2327;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.agfa-dark-toggle:active {
    transform: scale(0.98);
}

.agfa-quiz-card {
    display: grid;
    gap: 16px;
}

.agfa-english {
    font-size: 24px;
    margin: 0;
}

.agfa-image-wrap {
    display: flex;
    justify-content: center;
    margin: 4px 0 8px;
}

.agfa-image-wrap.is-hidden {
    display: none;
}

.agfa-image {
    max-height: 300px;
    max-width: 600px;
    width: auto;
    height: auto;
    border-radius: 16px;
    border: 1px solid #e2e4e7;
    object-fit: contain;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.agfa-prompt {
    font-size: 16px;
    color: #1d2327;
}

.agfa-hint {
    margin: 0 0 6px;
    color: #50575e;
    font-size: 14px;
}

.agfa-reference {
    font-size: 40px;
    font-weight: 600;
    color: #1d2327;
    line-height: 1.4;
}

.agfa-reference.is-incorrect {
    color: #b32d2e;
}

.agfa-audio-word {
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid #2271b1;
    background: #fff;
    color: #2271b1;
    cursor: pointer;
    font-size: 40px;
    font-weight: 600;
    line-height: 1.4;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
    text-align: center;
}

.agfa-audio-word:active {
    transform: scale(0.98);
    box-shadow: 0 6px 18px rgba(34, 113, 177, 0.2);
}

.agfa-options {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.agfa-option {
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 36px;
    line-height: 1.4;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.12s ease;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
    text-align: center;
}

.agfa-option:hover {
    border-color: #2271b1;
}

.agfa-option.is-selected {
    border-color: #2271b1;
    box-shadow: 0 0 0 2px rgba(34, 113, 177, 0.2);
    transform: translateY(-1px);
}

.agfa-actions {
    display: flex;
    gap: 12px;
}

.agfa-primary,
.agfa-secondary,
.agfa-restart {
    padding: 10px 18px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.agfa-primary {
    background: #1d2327;
    color: #fff;
}

.agfa-primary:disabled {
    background: #8c8f94;
    cursor: not-allowed;
}

.agfa-primary.is-hidden {
    display: none;
}

.agfa-secondary {
    background: #2271b1;
    color: #fff;
}

.agfa-secondary.is-hidden {
    display: none;
}

.agfa-feedback {
    font-weight: 600;
}

.agfa-feedback.is-correct {
    color: #1d7f3c;
}

.agfa-feedback.is-incorrect {
    color: #b32d2e;
}

.agfa-spelling {
    display: grid;
    gap: 12px;
}

.agfa-spell-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.agfa-spell-slot {
    min-width: 26px;
    min-height: 40px;
    padding: 8px 10px;
    border: 1px dashed #c3c4c7;
    border-radius: 6px;
    font-size: 36px;
    text-align: center;
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.agfa-spell-slot.is-incorrect {
    color: #b32d2e;
    border-color: #e07a7a;
    background: rgba(211, 47, 47, 0.1);
    animation: agfa-spell-wrong 1.4s ease;
}

.agfa-spell-slot.is-correct {
    color: #1d7f3c;
    border-color: #4caf50;
    background: rgba(76, 175, 80, 0.12);
}

.agfa-spell-slot.is-reveal {
    animation: agfa-spell-right 0.6s ease;
}

.agfa-spell-slot.is-space {
    border: none;
    min-width: 12px;
    padding: 6px 0;
}

.agfa-spell-bank {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
}

.agfa-spell-slots[dir="rtl"],
.agfa-spell-bank[dir="rtl"] {
    justify-content: flex-end;
}

.agfa-letter {
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 32px;
    line-height: 1.4;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.agfa-option[dir="rtl"],
.agfa-audio-word[dir="rtl"],
.agfa-reference[dir="rtl"] {
    text-align: right;
}

.agfa-letter:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.agfa-letter.is-used {
    background: #e9edf1;
    color: #7a828a;
    border-color: #c3c8cf;
}

.agfa-primary:active,
.agfa-secondary:active,
.agfa-option:active,
.agfa-letter:active,
.agfa-restart:active {
    transform: scale(0.98);
}

.agfa-quiz.is-transition .agfa-english,
.agfa-quiz.is-transition .agfa-prompt,
.agfa-quiz.is-transition .agfa-options,
.agfa-quiz.is-transition .agfa-spelling,
.agfa-quiz.is-transition .agfa-actions,
.agfa-quiz.is-transition .agfa-feedback {
    animation: agfa-fade-up 0.35s ease;
}

.agfa-quiz.is-transition .agfa-english {
    animation-delay: 0.03s;
}

.agfa-quiz.is-transition .agfa-prompt {
    animation-delay: 0.06s;
}

.agfa-quiz.is-transition .agfa-options,
.agfa-quiz.is-transition .agfa-spelling {
    animation-delay: 0.1s;
}

.agfa-quiz.is-transition .agfa-actions {
    animation-delay: 0.14s;
}

.agfa-quiz.is-transition .agfa-feedback {
    animation-delay: 0.18s;
}

.agfa-quiz.is-transition .agfa-prompt .agfa-audio-word {
    animation: agfa-pop-in 0.4s ease;
}

.agfa-stagger {
    animation: agfa-stagger-in 0.3s ease both;
}

@keyframes agfa-fade-up {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes agfa-stagger-in {
    from {
        opacity: 0;
        transform: translateY(6px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes agfa-pop-in {
    0% {
        opacity: 0.3;
        transform: scale(0.96);
    }
    70% {
        opacity: 1;
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes agfa-spell-wrong {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    60% {
        opacity: 0.3;
        transform: scale(0.98);
    }
    100% {
        opacity: 0.1;
        transform: scale(0.96);
    }
}

@keyframes agfa-spell-right {
    from {
        opacity: 0;
        transform: translateY(6px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes agfa-pulse {
    0% {
        opacity: 0;
    }
    40% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.agfa-spell-controls {
    display: flex;
    gap: 8px;
}

.agfa-spell-controls button {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 12px;
}

.agfa-complete {
    margin-top: 20px;
    padding: 16px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e2e4e7;
    display: grid;
    gap: 12px;
    text-align: center;
}

.agfa-complete.is-hidden {
    display: none;
}

.agfa-restart {
    background: #2271b1;
    color: #fff;
}

.agfa-stats {
    max-width: 900px;
    margin: 24px auto;
    padding: 20px;
    border-radius: 16px;
    background: #f9fafb;
    border: 1px solid #e2e4e7;
}

.agfa-stats-header h3 {
    margin: 0 0 4px;
    font-size: 22px;
}

.agfa-stats-header p {
    margin: 0 0 16px;
    color: #646970;
}

.agfa-stats-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.agfa-stats-actions button {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid #d0d4d8;
    background: #fff;
    cursor: pointer;
    font-size: 13px;
    transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.agfa-stats-actions button:active {
    transform: scale(0.98);
}

.agfa-stats-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.agfa-stat-card {
    background: #fff;
    border: 1px solid #e2e4e7;
    border-radius: 12px;
    padding: 12px 14px;
    display: grid;
    gap: 6px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
}

.agfa-stat-label {
    font-size: 12px;
    color: #646970;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.agfa-stat-value {
    font-size: 20px;
    font-weight: 700;
    color: #1d2327;
}

.agfa-stat-sub {
    font-size: 12px;
    color: #50575e;
}

.agfa-heatmap {
    background: #fff;
    border: 1px solid #e2e4e7;
    border-radius: 12px;
    padding: 16px;
}

.agfa-heatmap-label {
    font-size: 12px;
    color: #646970;
    margin-bottom: 8px;
}

.agfa-heatmap-grid {
    display: grid;
    grid-template-columns: repeat(26, 1fr);
    gap: 4px;
}

.agfa-heatmap-day {
    width: 100%;
    padding-top: 100%;
    background: #eef0f2;
    border-radius: 4px;
}

.agfa-heatmap-day.is-active {
    background: #2271b1;
}

.agfa-quiz:fullscreen,
.agfa-quiz:-webkit-full-screen,
.agfa-quiz.is-fullscreen {
    width: 100vw;
    height: 100vh;
    max-width: none;
    margin: 0;
    border-radius: 0;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    justify-content: center;
}

.agfa-quiz.is-pseudo-fullscreen {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    max-width: none;
    margin: 0;
    border-radius: 0;
    padding: calc(24px + env(safe-area-inset-top)) calc(24px + env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) calc(24px + env(safe-area-inset-left));
    overflow-y: auto;
    z-index: 9999;
    background: #fbfbfc;
}

.agfa-quiz.is-pseudo-fullscreen .agfa-quiz-header,
.agfa-quiz.is-pseudo-fullscreen .agfa-quiz-card,
.agfa-quiz.is-pseudo-fullscreen .agfa-complete {
    width: min(900px, 100%);
    margin-left: auto;
    margin-right: auto;
}

.agfa-quiz.is-dark.is-pseudo-fullscreen {
    background: #0f141a;
}

body.agfa-pseudo-lock {
    overflow: hidden;
}

.agfa-quiz.is-fullscreen .agfa-quiz-header,
.agfa-quiz:fullscreen .agfa-quiz-header,
.agfa-quiz:-webkit-full-screen .agfa-quiz-header {
    margin-top: 0;
}

.agfa-quiz.is-fullscreen .agfa-quiz-card,
.agfa-quiz:fullscreen .agfa-quiz-card,
.agfa-quiz:-webkit-full-screen .agfa-quiz-card {
    margin-bottom: 0;
}

.agfa-quiz.is-fullscreen .agfa-quiz-header,
.agfa-quiz:fullscreen .agfa-quiz-header,
.agfa-quiz:-webkit-full-screen .agfa-quiz-header,
.agfa-quiz.is-fullscreen .agfa-quiz-card,
.agfa-quiz:fullscreen .agfa-quiz-card,
.agfa-quiz:-webkit-full-screen .agfa-quiz-card,
.agfa-quiz.is-fullscreen .agfa-complete,
.agfa-quiz:fullscreen .agfa-complete,
.agfa-quiz:-webkit-full-screen .agfa-complete {
    width: min(900px, 100%);
}

.agfa-quiz.is-fullscreen .agfa-quiz-header,
.agfa-quiz:fullscreen .agfa-quiz-header,
.agfa-quiz:-webkit-full-screen .agfa-quiz-header {
    justify-content: space-between;
}

@media (max-width: 600px) {
    .agfa-quiz {
        padding: 16px;
    }

    .agfa-english {
        font-size: 20px;
    }

    .agfa-actions {
        flex-direction: column;
    }

    .agfa-audio-word {
        font-size: clamp(22px, 7vw, 34px);
    }

    .agfa-option {
        font-size: clamp(20px, 6.2vw, 30px);
    }

    .agfa-reference {
        font-size: clamp(22px, 7vw, 34px);
    }

    .agfa-letter {
        font-size: clamp(18px, 6vw, 28px);
        padding: 10px 14px;
    }

    .agfa-spell-slot {
        font-size: clamp(18px, 6vw, 28px);
        min-height: 34px;
    }

    .agfa-image {
        max-width: 100%;
        max-height: 240px;
    }

    .agfa-stats {
        padding: 16px;
    }
}