/* F1SYH_LEARNING_TOOLS_V1 */

.learning-tools-page,
.course-index-page,
.revision-page,
.memos-page,
.print-course-page {
    --tools-accent: var(--accent, var(--primary, #176b87));
    --tools-border: color-mix(in srgb, currentColor 18%, transparent);
    --tools-muted: color-mix(in srgb, currentColor 66%, transparent);
    --tools-soft: color-mix(in srgb, currentColor 7%, transparent);
    display: grid;
    gap: 1rem;
    padding-block: 1.2rem 2.5rem;
}

.learning-tools-hero,
.tool-filter-bar,
.learning-tools-grid > article,
.tool-card,
.revision-app,
.print-course-controls,
.print-course-document {
    border: 1px solid var(--tools-border);
    border-radius: 1rem;
    background: var(--surface, Canvas);
    box-shadow: 0 0.6rem 1.7rem rgb(0 0 0 / 0.08);
}

.learning-tools-hero {
    padding: clamp(1rem, 3vw, 1.6rem);
}

.learning-tools-eyebrow {
    margin: 0 0 0.3rem;
    color: var(--tools-accent);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.learning-tools-hero h1 {
    margin-top: 0;
}

.learning-tools-grid,
.tool-cards-grid {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(min(100%, 23rem), 1fr));
    gap: 0.8rem;
}

.learning-tools-grid > article,
.tool-card {
    padding: 1rem;
}

.learning-tools-number {
    margin: 0;
    color: var(--tools-accent);
    font-size: 1.4rem;
    font-weight: 900;
}

.learning-tools-grid h2,
.tool-card h2 {
    margin: 0.25rem 0;
}

.learning-tools-grid a,
.tool-card a,
.learning-tools-back a,
.course-index-letters button,
.revision-button,
.print-course-controls button,
.print-course-controls select {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.55rem;
    border: 1px solid var(--tools-border);
    border-radius: 0.68rem;
    padding: 0.5rem 0.75rem;
    color: inherit;
    background: var(--surface, Canvas);
    font: inherit;
    font-weight: 720;
    text-decoration: none;
    cursor: pointer;
}

.learning-tools-back,
.course-index-letters,
.revision-actions,
.revision-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.tool-filter-bar {
    position: sticky;
    top: 0.55rem;
    z-index: 20;
    display: grid;
    grid-template-columns:
        auto minmax(12rem, 1fr)
        auto minmax(10rem, 0.55fr);
    gap: 0.6rem;
    align-items: center;
    padding: 0.75rem;
    backdrop-filter: blur(12px);
}

.tool-filter-bar input,
.tool-filter-bar select {
    min-height: 2.65rem;
    border: 1px solid var(--tools-border);
    border-radius: 0.68rem;
    padding: 0.55rem 0.7rem;
    color: inherit;
    background: var(--surface, Canvas);
    font: inherit;
}

.tool-filter-bar p {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--tools-muted);
}

.tool-card[hidden] {
    display: none;
}

.tool-card-meta {
    color: var(--tools-muted);
    font-size: 0.82rem;
}

.memo-card {
    border-left: 0.38rem solid var(--tools-accent);
}

.memo-warning {
    border-left-color: #b33a3a;
}

.memo-example {
    border-left-color: #d08020;
}

.memo-note {
    border-left-color: #2f7d50;
}

.memo-body {
    font-weight: 700;
}

.revision-app {
    padding: 1rem;
}

.revision-card {
    display: grid;
    align-content: center;
    gap: 1rem;
    min-height: 24rem;
    border: 1px solid var(--tools-border);
    border-radius: 1rem;
    padding: clamp(1rem, 4vw, 2rem);
    text-align: center;
}

.revision-card h2 {
    font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.revision-answer {
    border-top: 1px solid var(--tools-border);
    padding-top: 1rem;
}

.revision-progress {
    height: 0.55rem;
    overflow: hidden;
    border-radius: 999px;
    background: var(--tools-soft);
}

.revision-progress span {
    display: block;
    height: 100%;
    background: var(--tools-accent);
}

.revision-button.primary {
    border-color: var(--tools-accent);
    color: #fff;
    background: var(--tools-accent);
}

.print-course-controls,
.print-course-document {
    padding: 1rem;
}

.print-course-controls form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.print-course-document {
    width: min(100%, 22cm);
    margin-inline: auto;
}

.print-chapter {
    break-before: page;
}

.print-chapter:first-of-type {
    break-before: auto;
}

.print-lesson {
    margin-block: 1rem;
    break-inside: avoid;
}

.print-formula,
.print-note,
.print-warning,
.print-example {
    border-left: 0.35rem solid #176b87;
    padding: 0.6rem 0.8rem;
    background: #f4f7fa;
    color: #14212b;
}

.print-warning {
    border-left-color: #b33a3a;
}

.print-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.print-grid article {
    border: 1px solid #ccd7de;
    padding: 0.6rem;
}

.print-course-document table {
    width: 100%;
    border-collapse: collapse;
}

.print-course-document th,
.print-course-document td {
    border: 1px solid #ccd7de;
    padding: 0.4rem;
    text-align: left;
}

.print-quiz {
    font-style: italic;
}

.course-learning-tools-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
}

.course-learning-tools-card h2 {
    margin-top: 0;
}

@media (max-width: 720px) {
    .tool-filter-bar {
        position: static;
        grid-template-columns: 1fr;
    }

    .tool-filter-bar p {
        grid-column: auto;
    }

    .course-learning-tools-card {
        grid-template-columns: 1fr;
    }
}

@media print {
    header,
    footer,
    .print-course-controls {
        display: none !important;
    }

    .print-course-page {
        display: block;
        padding: 0;
    }

    .print-course-document {
        width: auto;
        max-width: none;
        border: 0;
        box-shadow: none;
        padding: 0;
        color: #111;
        background: #fff;
    }

    @page {
        size: A4;
        margin: 1.4cm;
    }
}