/*
  Curriculum Landing Page Styles
  Designed for reusable curriculum overview pages with:
  - hero sections
  - learning sections
  - concept sections
  - unit card grids
  - image-based curriculum cards
  - general content sections
*/

:root {
    --clp-bg: #ffffff;
    --clp-bg-soft: #f7f4ef;
    --clp-bg-muted: #fbfaf7;
    --clp-card-bg: #ffffff;
    --clp-text: #2f2a25;
    --clp-text-muted: #5f5750;
    --clp-heading: #243447;
    --clp-accent: #8a5a2b;
    --clp-accent-soft: #ead8c2;
    --clp-border: #e3ddd4;
    --clp-shadow: 0 10px 28px rgba(36, 52, 71, 0.08);
    --clp-radius: 18px;
    --clp-radius-sm: 12px;
    --clp-max-width: 1120px;
    --clp-section-spacing: 4.5rem;
    --clp-card-gap: 1.5rem;
}

.curriculum-landing-page {
    max-width: var(--clp-max-width);
    margin: 0 auto;
    padding: 2rem 1.25rem 4rem;
    color: var(--clp-text);
    background: var(--clp-bg);
    font-family: inherit;
    line-height: 1.65;
}

    .curriculum-landing-page *,
    .curriculum-landing-page *::before,
    .curriculum-landing-page *::after {
        box-sizing: border-box;
    }

    .curriculum-landing-page section {
        margin-block: var(--clp-section-spacing);
    }

        .curriculum-landing-page section:first-child {
            margin-top: 0;
        }

    .curriculum-landing-page h1,
    .curriculum-landing-page h2,
    .curriculum-landing-page h3,
    .curriculum-landing-page h4 {
        color: var(--clp-heading);
        line-height: 1.2;
        margin: 0 0 0.75rem;
        font-weight: 700;
    }

    .curriculum-landing-page h1 {
        font-size: clamp(2.1rem, 5vw, 4rem);
        letter-spacing: -0.04em;
    }

    .curriculum-landing-page h2 {
        font-size: clamp(1.65rem, 3vw, 2.35rem);
        letter-spacing: -0.025em;
    }

    .curriculum-landing-page h3 {
        font-size: clamp(1.35rem, 2.4vw, 1.9rem);
    }

    .curriculum-landing-page h4 {
        font-size: 1.2rem;
    }

    .curriculum-landing-page p {
        margin: 0 0 1rem;
    }

        .curriculum-landing-page p:last-child,
        .curriculum-landing-page li:last-child {
            margin-bottom: 0;
        }

    .curriculum-landing-page strong {
        color: var(--clp-heading);
    }

    .curriculum-landing-page em {
        color: inherit;
    }

    .curriculum-landing-page ul {
        margin: 1rem 0 0;
        padding-left: 1.25rem;
    }

    .curriculum-landing-page li {
        margin-bottom: 0.45rem;
        padding-left: 0.15rem;
    }

    .curriculum-landing-page img {
        display: block;
        max-width: 100%;
        height: auto;
    }

/* Hero */

.hero-section {
    position: relative;
    overflow: hidden;
    padding: clamp(2rem, 5vw, 4rem);
    background: radial-gradient(circle at top right, rgba(234, 216, 194, 0.75), transparent 38%), linear-gradient(135deg, var(--clp-bg-soft), var(--clp-bg-muted));
    border: 1px solid var(--clp-border);
    border-radius: calc(var(--clp-radius) + 8px);
}

    .hero-section p {
        max-width: 760px;
        font-size: 1.05rem;
    }

.eyebrow,
.unit-label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    width: fit-content;
    margin-bottom: 0.75rem;
    color: var(--clp-accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

    .eyebrow::before,
    .unit-label::before {
        content: "";
        display: inline-block;
        width: 0.55rem;
        height: 0.55rem;
        border-radius: 999px;
        background: var(--clp-accent);
    }

/* General content sections */

.learning-section,
.writing-section,
.literary-analysis-section,
.language-study-section,
.interdisciplinary-section,
.growth-section {
    padding: clamp(1.5rem, 4vw, 2.5rem);
    background: var(--clp-bg-muted);
    border: 1px solid var(--clp-border);
    border-radius: var(--clp-radius);
}

    .learning-section ul,
    .writing-section ul,
    .literary-analysis-section ul,
    .language-study-section ul,
    .interdisciplinary-section ul {
        columns: 2;
        column-gap: 2rem;
    }

/* Year organization */

.year-organization-section > p {
    max-width: 820px;
}

.concept-section {
    margin-top: 3rem;
}

    .concept-section > h3 {
        position: relative;
        padding-top: 1rem;
        border-top: 3px solid var(--clp-accent-soft);
    }

    .concept-section > p {
        max-width: 760px;
        color: var(--clp-text-muted);
    }

/* Unit cards */

.unit-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--clp-card-gap);
    margin-top: 1.5rem;
}

.unit-card {
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    background: var(--clp-card-bg);
    border: 1px solid var(--clp-border);
    border-radius: var(--clp-radius);
    box-shadow: var(--clp-shadow);
}

    .unit-card img {
        width: 100%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
        background: var(--clp-bg-soft);
        border-bottom: 1px solid var(--clp-border);
    }

.unit-card-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.25rem;
}

.unit-card h4 {
    margin-bottom: 0.75rem;
}

.unit-card p {
    color: var(--clp-text-muted);
    font-size: 0.96rem;
}

    .unit-card p:first-of-type:not(.unit-label) {
        color: var(--clp-text);
    }

.unit-label {
    margin-bottom: 0.45rem;
    font-size: 0.72rem;
}

/* Optional concept color accents */

.concept-environment {
    --clp-accent: #5f7f3f;
    --clp-accent-soft: #dce8ce;
}

.concept-change {
    --clp-accent: #9a6a2f;
    --clp-accent-soft: #ead7bb;
}

.concept-cycles {
    --clp-accent: #4f7f8f;
    --clp-accent-soft: #d1e5ea;
}

.concept-relationships {
    --clp-accent: #8a5678;
    --clp-accent-soft: #ead3e0;
}

/* Alternate card layout option
   Add .unit-grid-wide to a unit-grid container for wider horizontal cards.
*/

.unit-grid-wide {
    grid-template-columns: 1fr;
}

    .unit-grid-wide .unit-card {
        display: grid;
        grid-template-columns: minmax(180px, 32%) 1fr;
    }

        .unit-grid-wide .unit-card img {
            height: 100%;
            aspect-ratio: auto;
            border-bottom: 0;
            border-right: 1px solid var(--clp-border);
        }

/* Compact page option
   Add .curriculum-landing-page--compact to the outer wrapper.
*/

.curriculum-landing-page--compact {
    --clp-section-spacing: 3rem;
    --clp-card-gap: 1rem;
}

    .curriculum-landing-page--compact .unit-card-content {
        padding: 1rem;
    }

    .curriculum-landing-page--compact .unit-card p {
        font-size: 0.92rem;
    }

/* Responsive */

@media (max-width: 980px) {
    .unit-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .learning-section ul,
    .writing-section ul,
    .literary-analysis-section ul,
    .language-study-section ul,
    .interdisciplinary-section ul {
        columns: 1;
    }
}

@media (max-width: 700px) {
    :root {
        --clp-section-spacing: 3rem;
    }

    .curriculum-landing-page {
        padding-inline: 1rem;
    }

    .hero-section,
    .learning-section,
    .writing-section,
    .literary-analysis-section,
    .language-study-section,
    .interdisciplinary-section,
    .growth-section {
        padding: 1.35rem;
        border-radius: var(--clp-radius-sm);
    }

    .unit-grid,
    .unit-grid-wide {
        grid-template-columns: 1fr;
    }

        .unit-grid-wide .unit-card {
            display: flex;
        }

            .unit-grid-wide .unit-card img {
                height: auto;
                aspect-ratio: 4 / 3;
                border-right: 0;
                border-bottom: 1px solid var(--clp-border);
            }
}

@media (prefers-reduced-motion: no-preference) {
    .unit-card {
        transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
    }

        .unit-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 34px rgba(36, 52, 71, 0.12);
            border-color: var(--clp-accent-soft);
        }
}