/* FloraForge concepts section: article theme plus the sidebar shell, code
   blocks, and concept-page components. */
@import url("./article.css");

/* ---- two-column shell ---- */
.concept-shell {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
    padding-top: 1rem;
}

.concept-sidebar {
    position: sticky;
    top: 1.5rem;
    padding: 1.4rem 1.2rem 1.6rem;
    border-radius: 18px;
    background: var(--panel);
    border: 1px solid var(--line);
}

.concept-nav { display: flex; flex-direction: column; }

.concept-nav a {
    display: block;
    padding: 0.42rem 0.65rem;
    margin: 0.08rem -0.65rem;
    border-radius: 10px;
    color: var(--sand);
    font-size: 0.92rem;
    line-height: 1.35;
    border-left: 2px solid transparent;
    transition: background 140ms ease, color 140ms ease;
}

.concept-nav a:hover { background: rgba(124, 255, 159, 0.08); color: var(--cream); }

.concept-nav a.current {
    color: var(--green-glow);
    background: rgba(62, 207, 110, 0.1);
    border-left-color: var(--green-bright);
}

.concept-nav-home {
    font-family: "Space Grotesk", sans-serif;
    font-weight: 600;
    color: var(--cream) !important;
}

.concept-nav-group {
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--green-bright);
    opacity: 0.8;
    margin: 1.2rem 0 0.35rem;
}

.concept-main { min-width: 0; padding-bottom: 3rem; }

/* concept pages reuse .hero/.block, but tightened for the narrower column */
.concept-main .hero { padding: 1.4rem 0 0.5rem; }
.concept-main .hero h1 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); }
.concept-main section.block { padding: 2.6rem 0; }

/* ---- code blocks ---- */
pre.code-block {
    margin: 1.8rem 0;
    padding: 1.4rem 1.6rem;
    border-radius: 16px;
    background: rgba(5, 13, 7, 0.85);
    border: 1px solid rgba(62, 207, 110, 0.18);
    box-shadow: var(--shadow);
    overflow-x: auto;
    font-family: var(--code);
    font-size: 0.84rem;
    line-height: 1.65;
    color: #d8e4d8;
    tab-size: 4;
}

pre.code-block code {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    padding: 0;
}

.code-title {
    margin: 1.8rem 0 -1.4rem;
    padding: 0.55rem 1.6rem;
    border-radius: 16px 16px 0 0;
    background: rgba(62, 207, 110, 0.1);
    border: 1px solid rgba(62, 207, 110, 0.18);
    border-bottom: 0;
    font-family: var(--code);
    font-size: 0.76rem;
    letter-spacing: 0.06em;
    color: var(--green-glow);
}

.code-title + pre.code-block {
    margin-top: 1.4rem;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

/* hand-rolled syntax tokens */
pre.code-block .kw { color: #7cff9f; }            /* keywords: fn, let, var, struct */
pre.code-block .ty { color: #8cc4eb; }            /* types: f32, vec3, mat4x4 */
pre.code-block .fn { color: #f6c591; }            /* function names */
pre.code-block .num { color: #e8a8c8; }           /* numeric literals */
pre.code-block .str { color: #d9c97f; }           /* strings */
pre.code-block .cm { color: rgba(199, 185, 157, 0.62); font-style: italic; } /* comments */
pre.code-block .at { color: #c79bff; }            /* attributes: @vertex, @group(...) */

/* ---- figure / diagram cards (shared with article.css .diagram-card) ---- */
.concept-figure {
    margin: 2rem 0;
    padding: 1.8rem;
    border-radius: 20px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.concept-figure svg { width: 100%; height: auto; display: block; }
.concept-figure svg text { font-family: "Space Grotesk", sans-serif; }

.concept-figure figcaption {
    margin-top: 1.2rem;
    color: var(--mist);
    font-size: 0.9rem;
    text-align: center;
}

/* ---- prose ---- */
.concept-main .prose p {
    color: var(--sand);
    max-width: 70ch;
    margin: 0 0 1.1rem;
    font-size: 1rem;
}

.concept-main .prose h2 {
    font-size: clamp(1.5rem, 2.8vw, 2.1rem);
    margin-top: 2.6rem;
}

.concept-main .prose h3 {
    font-size: 1.18rem;
    margin: 2rem 0 0.7rem;
    color: var(--cream);
}

.concept-main .prose ul,
.concept-main .prose ol {
    color: var(--sand);
    margin: 0 0 1.1rem 1.3rem;
    max-width: 68ch;
}

.concept-main .prose li { margin-bottom: 0.45rem; }
.concept-main .prose li strong { color: var(--cream); }

/* ---- in-engine reference box ---- */
.in-engine {
    margin: 2.2rem 0;
    padding: 1.3rem 1.5rem;
    border-radius: 16px;
    background: rgba(62, 207, 110, 0.06);
    border: 1px solid rgba(62, 207, 110, 0.16);
    border-left: 3px solid var(--green-bright);
    color: var(--sand);
    font-size: 0.94rem;
}

.in-engine .in-engine-label {
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--green-bright);
    margin-bottom: 0.4rem;
}

.in-engine strong { color: var(--cream); }

/* ---- prev/next pager ---- */
.concept-pager {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 1.6rem;
    border-top: 1px solid var(--line);
}

.concept-pager a {
    flex: 0 1 auto;
    max-width: 46%;
    padding: 0.9rem 1.2rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(30, 77, 43, 0.14);
    color: var(--cream);
    font-size: 0.92rem;
    transition: border-color 140ms ease, background 140ms ease;
}

.concept-pager a:hover { border-color: rgba(124, 255, 159, 0.45); background: rgba(62, 207, 110, 0.1); }

.concept-pager a small {
    display: block;
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--green-bright);
    margin-bottom: 0.25rem;
}

.concept-pager a.next { text-align: right; margin-left: auto; }

/* ---- concepts index cards ---- */
.concept-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.4rem;
    margin-top: 2.2rem;
}

.concept-card-link {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    padding: 1.6rem;
    border-radius: 20px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    transition: transform 160ms ease, border-color 160ms ease;
}

.concept-card-link:hover {
    transform: translateY(-3px);
    border-color: rgba(124, 255, 159, 0.4);
}

.concept-card-link .icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(62, 207, 110, 0.1);
    border: 1px solid rgba(62, 207, 110, 0.2);
    display: grid;
    place-items: center;
}

.concept-card-link .icon svg { width: 34px; height: 34px; display: block; }

.concept-card-link h3 {
    font-size: 1.18rem;
    color: var(--cream);
}

.concept-card-link p { color: var(--sand); font-size: 0.92rem; }

.concept-card-link .go {
    margin-top: auto;
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    color: var(--green-bright);
}

/* ---- responsive ---- */
@media (max-width: 920px) {
    .concept-shell { grid-template-columns: 1fr; gap: 1.5rem; }
    .concept-sidebar { position: static; }
    .concept-nav { flex-direction: row; flex-wrap: wrap; gap: 0.2rem 0.6rem; }
    .concept-nav a { margin: 0; }
    .concept-nav-group { width: 100%; margin: 0.8rem 0 0.2rem; }
}