.flashcards-hero {
    padding: 58px 0 64px;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--amber) 18%, transparent), transparent 34%),
        radial-gradient(circle at 88% 72%, color-mix(in srgb, var(--teal) 17%, transparent), transparent 38%),
        var(--surface-soft);
}

.flashcards-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(390px, 0.72fr);
    align-items: center;
    gap: clamp(34px, 6vw, 78px);
}

.flashcards-hero-copy h1 {
    max-width: 760px;
    margin: 8px 0 18px;
    color: var(--ink);
    font-size: clamp(2.7rem, 5.4vw, 5.2rem);
    line-height: 0.98;
    letter-spacing: -0.045em;
}

.flashcards-hero-copy > p:not(.eyebrow) {
    max-width: 670px;
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.07rem;
    line-height: 1.7;
}

.flashcards-hero-points {
    display: flex;
    gap: 9px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.flashcards-hero-points span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 38px;
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink);
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    font-size: 0.8rem;
    font-weight: 900;
}

.flashcards-tutor-chip {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    max-width: 430px;
    margin-top: 24px;
    padding: 10px 14px 10px 10px;
    border: 1px solid color-mix(in srgb, var(--teal) 36%, var(--line));
    border-radius: 10px;
    color: var(--ink);
    background: var(--surface);
    box-shadow: 0 12px 30px rgba(23, 52, 58, 0.08);
}

.flashcards-tutor-chip > img {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    object-fit: cover;
}

.flashcards-tutor-chip span {
    display: grid;
    gap: 2px;
}

.flashcards-tutor-chip small,
.flashcards-tutor-chip em {
    color: var(--ink-soft);
    font-size: 0.75rem;
    font-style: normal;
}

.flashcards-tutor-chip small {
    color: var(--teal-deep);
    font-weight: 900;
    text-transform: uppercase;
}

.flashcard-generator {
    display: grid;
    gap: 15px;
    padding: clamp(22px, 4vw, 32px);
    border: 1px solid var(--line);
    border-top: 5px solid var(--amber);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: 0 24px 62px rgba(23, 52, 58, 0.13);
}

.flashcard-generator header > span {
    color: var(--teal-deep);
    font-size: 0.72rem;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.flashcard-generator h2 {
    margin: 5px 0 6px;
    color: var(--ink);
    font-size: 1.55rem;
}

.flashcard-generator header p,
.flashcard-generator-status {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.84rem;
    line-height: 1.5;
}

.flashcard-generator label,
.flashcards-new-deck-form label,
.flashcards-editor-field {
    display: grid;
    gap: 7px;
    color: var(--ink);
    font-size: 0.78rem;
    font-weight: 900;
}

.flashcard-generator input,
.flashcard-generator textarea,
.flashcard-generator select,
.flashcards-new-deck-form input,
.flashcards-editor-field input,
.flashcards-editor-field textarea {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 7px;
    outline: 0;
    color: var(--ink);
    background: var(--surface-soft);
    font: inherit;
    font-size: 0.9rem;
    font-weight: 600;
}

.flashcard-generator input,
.flashcard-generator select,
.flashcards-new-deck-form input,
.flashcards-editor-field input {
    height: 44px;
    padding: 0 12px;
}

.flashcard-generator textarea,
.flashcards-editor-field textarea {
    padding: 11px 12px;
    line-height: 1.5;
    resize: vertical;
}

.flashcard-generator input:focus,
.flashcard-generator textarea:focus,
.flashcard-generator select:focus,
.flashcards-new-deck-form input:focus,
.flashcards-editor-field input:focus,
.flashcards-editor-field textarea:focus,
.flashcards-search:focus-within {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--teal) 18%, transparent);
}

.flashcard-generator-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 118px;
    gap: 12px;
}

.flashcard-generator .button {
    width: 100%;
}

.flashcards-library-section {
    padding: 62px 0 78px;
    background: var(--surface);
}

.flashcards-library-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 28px;
    margin-bottom: 24px;
}

.flashcards-library-head h2 {
    margin: 5px 0 7px;
    color: var(--ink);
    font-size: clamp(2rem, 4vw, 3.15rem);
}

.flashcards-library-head > div:first-child > p:last-child {
    margin: 0;
    color: var(--ink-soft);
}

.flashcards-library-head a {
    color: var(--teal-deep);
    font-weight: 900;
}

.flashcards-library-stats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.flashcards-library-stats span {
    min-width: 92px;
    padding: 9px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink-soft);
    background: var(--surface-soft);
    font-size: 0.75rem;
    text-align: center;
}

.flashcards-library-stats strong {
    display: block;
    color: var(--ink);
    font-size: 1.15rem;
}

.flashcards-library-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: var(--surface-soft);
}

.flashcards-search {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    width: min(100%, 520px);
    height: 42px;
    padding: 0 11px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--surface);
}

.flashcards-search input {
    min-width: 0;
    height: 100%;
    padding: 0;
    border: 0;
    outline: 0;
    color: var(--ink);
    background: transparent;
    font: inherit;
}

.flashcards-new-deck-form,
.flashcards-deck-edit,
.flashcards-card-edit,
.flashcards-card-add-form {
    display: grid;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface-soft);
}

.flashcards-new-deck-form {
    grid-template-columns: minmax(220px, 1fr) minmax(180px, 0.65fr) auto auto;
    align-items: end;
    margin-bottom: 18px;
}

.flashcards-new-deck-form > p {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--ink-soft);
}

.flashcards-new-deck-form[hidden],
.flashcards-deck-edit[hidden],
.flashcards-card-edit[hidden] {
    display: none;
}

.flashcards-deck-list {
    display: grid;
    gap: 24px;
}

.personal-flashcard-deck {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-soft);
    box-shadow: 0 16px 42px rgba(23, 52, 58, 0.08);
}

.personal-flashcard-deck-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 24px;
    padding: 23px 24px 18px;
    background: var(--surface);
}

.personal-flashcard-deck-copy {
    min-width: 0;
}

.personal-flashcard-deck-meta {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
}

.personal-flashcard-deck-meta span {
    padding: 5px 8px;
    border-radius: 999px;
    color: var(--teal-deep);
    background: var(--teal-soft);
    font-size: 0.68rem;
    font-weight: 950;
    text-transform: uppercase;
}

.personal-flashcard-deck-meta .is-source {
    color: var(--ink-soft);
    background: var(--surface-soft);
}

.personal-flashcard-deck-meta .is-tutor {
    color: color-mix(in srgb, var(--amber) 55%, var(--ink));
    background: color-mix(in srgb, var(--amber) 16%, var(--surface));
}

.personal-flashcard-deck h3 {
    margin: 10px 0 5px;
    color: var(--ink);
    font-size: 1.55rem;
}

.personal-flashcard-deck-copy > p {
    max-width: 760px;
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.55;
}

.personal-flashcard-deck-stats {
    display: grid;
    min-width: 130px;
    gap: 3px;
    color: var(--ink-soft);
    font-size: 0.77rem;
    text-align: right;
}

.personal-flashcard-deck-stats strong {
    color: var(--ink);
    font-size: 1rem;
}

.personal-flashcard-deck-toolbar {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 11px 24px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 86%, var(--surface-soft));
}

.button.is-danger,
.flashcards-icon-button.is-danger {
    color: #a13939;
}

.flashcards-deck-edit {
    grid-template-columns: minmax(180px, 1fr) minmax(150px, 0.7fr);
    margin: 16px 24px 0;
}

.flashcards-deck-edit > label:last-of-type,
.flashcards-deck-edit .flashcards-editor-actions {
    grid-column: 1 / -1;
}

.personal-flashcard-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    padding: 22px 24px;
}

.personal-flashcard {
    display: grid;
    min-width: 0;
    border: 1px solid var(--line);
    border-top: 4px solid var(--amber);
    border-radius: 9px;
    background: var(--surface);
    box-shadow: 0 10px 24px rgba(23, 52, 58, 0.06);
    perspective: 1100px;
}

.personal-flashcard.is-mastered {
    border-color: color-mix(in srgb, var(--teal) 62%, var(--line));
    border-top-color: var(--teal);
}

.personal-flashcard-face {
    display: grid;
    width: 100%;
    min-height: 245px;
    padding: 0;
    border: 0;
    color: inherit;
    background: transparent;
    font: inherit;
    text-align: left;
    cursor: pointer;
    transform-style: preserve-3d;
    transition: transform 360ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.personal-flashcard.is-flipped .personal-flashcard-face {
    transform: rotateY(180deg);
}

.personal-flashcard-side {
    display: flex;
    grid-area: 1 / 1;
    min-width: 0;
    padding: 20px;
    flex-direction: column;
    backface-visibility: hidden;
}

.personal-flashcard-side.is-back {
    visibility: hidden;
    border-radius: 6px;
    background: var(--teal-soft);
    transform: rotateY(180deg);
}

.personal-flashcard.is-flipped .personal-flashcard-side.is-back {
    visibility: visible;
}

.personal-flashcard-side small {
    color: var(--ink-soft);
    font-size: 0.69rem;
    font-weight: 950;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.personal-flashcard-side strong {
    margin: 15px 0;
    color: var(--ink);
    font-size: 1.05rem;
    line-height: 1.5;
    white-space: pre-wrap;
}

.personal-flashcard-side em {
    margin-top: auto;
    color: var(--ink-soft);
    font-size: 0.73rem;
    font-style: normal;
    font-weight: 800;
}

.personal-flashcard-note {
    margin: 0 0 14px;
    padding: 10px;
    border-left: 3px solid var(--amber);
    color: var(--ink-soft);
    background: color-mix(in srgb, var(--surface) 70%, transparent);
    font-size: 0.82rem;
    line-height: 1.5;
    white-space: pre-wrap;
}

.personal-flashcard-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 10px;
    border-top: 1px solid var(--line);
}

.personal-flashcard-mastered {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: auto;
    color: var(--ink-soft);
    font-size: 0.73rem;
    font-weight: 900;
}

.personal-flashcard-mastered input {
    accent-color: var(--teal);
}

.flashcards-icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-height: 32px;
    padding: 5px 7px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink-soft);
    background: var(--surface);
    font: inherit;
    font-size: 0.68rem;
    font-weight: 900;
    cursor: pointer;
}

.flashcards-card-edit {
    margin: 0 10px 10px;
}

.flashcards-editor-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.flashcards-inline-status {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.76rem;
}

.flashcards-card-add {
    margin: 0 24px 24px;
    border: 1px dashed color-mix(in srgb, var(--teal) 42%, var(--line));
    border-radius: 8px;
    background: var(--surface);
}

.flashcards-card-add summary {
    padding: 13px 15px;
    color: var(--teal-deep);
    font-size: 0.82rem;
    font-weight: 950;
    cursor: pointer;
}

.flashcards-card-add-form {
    border: 0;
    border-top: 1px solid var(--line);
    border-radius: 0;
}

.personal-flashcard-deck-empty,
.flashcards-no-results,
.flashcards-library-empty,
.flashcards-signin-panel {
    padding: 34px;
    border: 1px dashed var(--line);
    border-radius: 10px;
    color: var(--ink-soft);
    background: var(--surface-soft);
    text-align: center;
}

.personal-flashcard-deck-empty {
    grid-column: 1 / -1;
    margin: 0;
}

.flashcards-library-empty[hidden] {
    display: none;
}

.flashcards-library-empty h3,
.flashcards-signin-panel h3,
.flashcards-no-results strong {
    margin: 10px 0 6px;
    color: var(--ink);
}

.flashcards-library-empty p,
.flashcards-signin-panel p,
.flashcards-no-results p {
    margin: 0;
    line-height: 1.55;
}

.flashcards-signin-panel {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    text-align: left;
}

.flashcards-signin-panel h3 {
    margin-top: 0;
}

.flashcards-public-section .revision-set-card h3 {
    margin: 18px 0 10px;
    font-size: 1.1rem;
}

@media (max-width: 1040px) {
    .flashcards-hero-grid {
        grid-template-columns: 1fr;
    }

    .flashcards-hero-copy h1 {
        max-width: 840px;
    }

    .personal-flashcard-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .flashcards-hero {
        padding: 42px 0 48px;
    }

    .flashcards-hero-copy h1 {
        font-size: 2.7rem;
    }

    .flashcard-generator-row,
    .flashcards-new-deck-form,
    .flashcards-deck-edit,
    .personal-flashcard-grid {
        grid-template-columns: 1fr;
    }

    .flashcards-library-head,
    .flashcards-library-toolbar,
    .personal-flashcard-deck-head,
    .flashcards-signin-panel {
        align-items: stretch;
        flex-direction: column;
    }

    .flashcards-library-head,
    .personal-flashcard-deck-head {
        display: flex;
    }

    .flashcards-library-stats {
        justify-content: flex-start;
    }

    .flashcards-library-toolbar {
        display: grid;
    }

    .flashcards-search {
        width: 100%;
    }

    .personal-flashcard-deck-stats {
        text-align: left;
    }

    .personal-flashcard-deck-toolbar {
        justify-content: flex-start;
        padding-inline: 16px;
        flex-wrap: wrap;
    }

    .personal-flashcard-deck-head,
    .personal-flashcard-grid {
        padding-inline: 16px;
    }

    .flashcards-deck-edit,
    .flashcards-card-add {
        margin-inline: 16px;
    }

    .flashcards-deck-edit > label:last-of-type,
    .flashcards-deck-edit .flashcards-editor-actions {
        grid-column: auto;
    }

    .flashcards-signin-panel {
        display: grid;
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .personal-flashcard-face {
        transition: none;
    }
}