/* ==========================================================================
   CORE01 — Article diagram components (px-*)
   Renders conceptual diagrams / flows / mocks as styled HTML instead of
   plain ASCII code blocks. Uses the theme design tokens from main.css.
   ========================================================================== */

.px-fig {
    margin: var(--sp-xl, 2rem) 0;
    border: 1px solid var(--c-border, rgba(255, 255, 255, .08));
    border-radius: var(--radius-lg, 12px);
    background: var(--c-bg-card, #0a0a0a);
    padding: var(--sp-lg, 1.5rem);
    overflow: hidden;
}

/* --- raw code / JSON / mock-as-text --------------------------------------- */
.px-pre,
.px-code {
    margin: 0;
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
    line-height: 1.55;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
    white-space: pre;
    overflow-x: auto;
    tab-size: 2;
}

.px-fig--code {
    border-left: 2px solid var(--c-accent, #b7ff5a);
    background: var(--c-bg-tertiary, #111);
}

/* --- UI mock frame (window chrome) --------------------------------------- */
.px-fig--ui {
    padding-top: calc(var(--sp-lg, 1.5rem) + 1.4rem);
    position: relative;
    background: linear-gradient(180deg, rgba(255, 255, 255, .03), transparent 40%), var(--c-bg-secondary, #080808);
}

.px-fig--ui::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1.5rem;
    border-bottom: 1px solid var(--c-border, rgba(255, 255, 255, .08));
    background: rgba(255, 255, 255, .02);
}

.px-fig--ui::after {
    content: "● ● ●";
    position: absolute;
    top: .28rem;
    left: .9rem;
    font-size: .55rem;
    letter-spacing: .32em;
    color: var(--c-accent, #b7ff5a);
    opacity: .8;
}

.px-pre--ui {
    color: var(--c-text-primary, #fff);
}

/* --- vertical flow -------------------------------------------------------- */
.px-flow {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    text-align: center;
}

.px-flow__step {
    display: block;
    font-family: var(--font-heading, sans-serif);
    font-size: .82rem;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--c-text-primary, #fff);
    border: 1px solid var(--c-border-hover, rgba(255, 255, 255, .15));
    border-radius: var(--radius-md, 8px);
    background: rgba(255, 255, 255, .03);
    padding: .55rem 1.1rem;
    max-width: 30rem;
}

.px-flow__arrow {
    color: var(--c-accent, #b7ff5a);
    font-size: 1rem;
    line-height: 1;
    padding: .45rem 0;
}

/* --- horizontal chain ----------------------------------------------------- */
.px-chain {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    text-align: center;
}

.px-chain__item {
    font-family: var(--font-heading, sans-serif);
    font-size: .8rem;
    letter-spacing: .03em;
    text-transform: uppercase;
    border: 1px solid var(--c-border-hover, rgba(255, 255, 255, .15));
    border-radius: 999px;
    background: rgba(255, 255, 255, .03);
    padding: .45rem 1rem;
}

.px-chain__arrow {
    color: var(--c-accent, #b7ff5a);
    font-weight: 600;
}

/* --- arrow pairs ---------------------------------------------------------- */
.px-pairs {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: .55rem 1rem;
    align-items: center;
}

.px-pairs li {
    display: contents;
}

.px-pairs__k {
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
    color: var(--c-text-primary, #fff);
    text-align: right;
}

.px-pairs__v {
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

.px-pairs__arw {
    color: var(--c-accent, #b7ff5a);
}

/* --- chips (short item lists) -------------------------------------------- */
.px-chips {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.px-chips li {
    font-family: var(--font-mono, monospace);
    font-size: .78rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
    border: 1px solid var(--c-border, rgba(255, 255, 255, .08));
    border-radius: 999px;
    background: rgba(255, 255, 255, .02);
    padding: .35rem .8rem;
}

.px-chips--mono li {
    color: var(--c-accent, #b7ff5a);
    border-color: var(--c-accent-glow, rgba(183, 255, 90, .12));
    background: var(--c-accent-glow, rgba(183, 255, 90, .08));
}

/* --- numbered steps ------------------------------------------------------- */
.px-steps {
    margin: 0;
    padding-left: 1.2rem;
    counter-reset: pxstep;
    list-style: none;
}

.px-steps li {
    counter-increment: pxstep;
    position: relative;
    padding: .3rem 0 .3rem 2.2rem;
    font-family: var(--font-mono, monospace);
    font-size: .82rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

.px-steps li::before {
    content: counter(pxstep, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: .3rem;
    font-family: var(--font-heading, sans-serif);
    font-size: .72rem;
    color: var(--c-accent, #b7ff5a);
}

/* --- single note ---------------------------------------------------------- */
.px-fig--note {
    border-left: 2px solid var(--c-accent, #b7ff5a);
    background: var(--c-accent-glow, rgba(183, 255, 90, .06));
    padding: var(--sp-md, 1rem) var(--sp-lg, 1.5rem);
}

.px-note {
    margin: 0;
    font-family: var(--font-mono, monospace);
    font-size: .85rem;
    color: var(--c-text-primary, #fff);
}

/* --- table ---------------------------------------------------------------- */
.px-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
}

.px-table th,
.px-table td {
    text-align: left;
    padding: .45rem .75rem;
    border-bottom: 1px solid var(--c-border, rgba(255, 255, 255, .08));
}

.px-table th {
    font-family: var(--font-heading, sans-serif);
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--c-accent, #b7ff5a);
}

.px-table td {
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

/* --- chat ----------------------------------------------------------------- */
.px-chat {
    display: flex;
    flex-direction: column;
    gap: .6rem;
}

.px-chat__row {
    display: flex;
    flex-direction: column;
    gap: .2rem;
    max-width: 78%;
    border-radius: var(--radius-md, 8px);
    padding: .55rem .85rem;
    border: 1px solid var(--c-border, rgba(255, 255, 255, .08));
    background: rgba(255, 255, 255, .02);
}

.px-chat__row--user {
    align-self: flex-end;
    border-color: var(--c-border-hover, rgba(255, 255, 255, .15));
    background: rgba(255, 255, 255, .05);
}

.px-chat__who {
    font-family: var(--font-heading, sans-serif);
    font-size: .62rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--c-accent, #b7ff5a);
}

.px-chat__row p {
    margin: 0;
    font-size: .88rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

/* --- tree ----------------------------------------------------------------- */
.px-tree-wrap {
    font-family: var(--font-mono, monospace);
    font-size: .82rem;
}

.px-tree__root {
    display: block;
    font-family: var(--font-heading, sans-serif);
    font-size: .78rem;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: var(--c-text-primary, #fff);
    margin-bottom: .5rem;
}

.px-tree,
.px-tree ul {
    list-style: none;
    margin: 0;
    padding-left: 1.1rem;
    border-left: 1px solid var(--c-border, rgba(255, 255, 255, .08));
}

.px-tree {
    padding-left: 0;
    border-left: 0;
}

.px-tree li {
    padding: .18rem 0 .18rem .9rem;
    position: relative;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

.px-tree li::before {
    content: "─";
    position: absolute;
    left: 0;
    color: var(--c-accent, #b7ff5a);
    opacity: .7;
}

.px-tree__node {
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

/* --- definition list (KEY + description / items) ------------------------- */
.px-dl {
    margin: 0;
}

.px-dl__group + .px-dl__group {
    margin-top: var(--sp-md, 1rem);
}

.px-dl__key {
    font-family: var(--font-heading, sans-serif);
    font-size: .74rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--c-accent, #b7ff5a);
}

.px-dl__val {
    margin: .2rem 0 0;
    font-size: .88rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

.px-dl__list {
    margin: .25rem 0 0;
    padding-left: 1.1rem;
}

.px-dl__list li {
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

/* --- spec (component contract) ------------------------------------------ */
.px-spec__title {
    margin: 0 0 .8rem;
    font-family: var(--font-heading, sans-serif);
    font-size: .82rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--c-text-primary, #fff);
}

.px-spec__group + .px-spec__group {
    margin-top: .8rem;
}

.px-spec__key {
    font-family: var(--font-mono, monospace);
    font-size: .78rem;
    color: var(--c-accent, #b7ff5a);
}

.px-spec__list {
    margin: .25rem 0 0;
    padding-left: 1.1rem;
}

.px-spec__list li {
    font-family: var(--font-mono, monospace);
    font-size: .8rem;
    color: var(--c-text-secondary, rgba(255, 255, 255, .68));
}

/* --- list-marker resets (win over theme content rules like `.entry-content ol`) */
.px-fig .px-flow,
.px-fig .px-flow li,
.px-fig .px-chips,
.px-fig .px-chips li,
.px-fig .px-pairs,
.px-fig .px-pairs li,
.px-fig .px-steps,
.px-fig .px-steps li {
    list-style: none;
}

.px-fig .px-flow li::marker,
.px-fig .px-chips li::marker,
.px-fig .px-pairs li::marker,
.px-fig .px-steps li::marker {
    content: "";
}

.px-fig .px-flow,
.px-fig .px-chips,
.px-fig .px-pairs {
    padding-left: 0;
}

@media (max-width: 640px) {
    .px-pairs {
        grid-template-columns: 1fr;
    }

    .px-pairs__k {
        text-align: left;
    }

    .px-pairs__arw {
        display: none;
    }

    .px-chat__row {
        max-width: 100%;
    }
}