/* Reusable primitives: panels, cards, buttons, tabs, pills, skeletons, and the
   shared blueprint vocabulary. Depends on theme.css tokens + base.css reset;
   loads before shell and page layers. */

/* Page-shell flex utility for routes that stack their sections vertically. */
.product-shell {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

/* Shared lede + eyebrow text. The mono eyebrow is for deliberate, occasional
   use (One-Eyebrow rule), never stacked above every section. */
.product-lede {
    margin: 0.7rem 0 0;
    color: var(--color-subtle);
    font-size: clamp(1rem, 2vw, 1.18rem);
}

.product-kicker,
.eyebrow {
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* Panels and cards */

.card-surface,
.blueprint-panel,
.state-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-panel);
    box-shadow: 0 1px 0 color-mix(in srgb, var(--color-text) 8%, transparent);
}

.card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    text-wrap: balance;
    font-size: 1rem;
    line-height: 1.3;
}

.card-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 0.65rem;
}

.card-body p {
    margin: 0;
    color: var(--color-subtle);
    font-size: 0.92rem;
}

.card-meta {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.74rem;
}

/* Drafting-grid media wells and placeholders */

.card-media,
.blueprint-media,
.blueprint-preview {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(var(--color-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-grid-line) 1px, transparent 1px), var(--color-overlay);
    background-size: 20px 20px;
}

.blueprint-media {
    min-height: 8rem;
    padding: 0.75rem;
}

.blueprint-axis,
.blueprint-dimension {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-primary);
}

.blueprint-axis-x {
    right: 0.75rem;
    bottom: 0.75rem;
}

.blueprint-axis-y {
    left: 0.75rem;
    top: 0.75rem;
}

.blueprint-dimension {
    left: 0.75rem;
    bottom: 0.75rem;
}

/* Thing cards */

.thing-card {
    min-width: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.thing-card-media {
    aspect-ratio: 4 / 3;
    min-height: 10rem;
}

.thing-card-media-link {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.thing-card-media-link::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: transparent;
    outline: 0 solid transparent;
    outline-offset: -1px;
}

.thing-card-media-link:hover::after {
    background: color-mix(in srgb, var(--color-primary) 8%, transparent);
    outline-width: 1px;
    outline-color: var(--color-primary);
}

.thing-card-media-link:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
    outline-offset: -3px;
}

.thing-card-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thing-card-placeholder {
    display: grid;
    min-height: 100%;
    align-content: start;
}

.thing-card-placeholder::before,
.thing-card-placeholder::after {
    content: "";
    position: absolute;
    inset: 20% 17%;
    border: 1px solid var(--color-primary);
}

.thing-card-placeholder::after {
    inset: 34% 28%;
    border-color: var(--color-action);
}

.thing-card-body {
    flex: 1;
    justify-content: flex-start;
}

.thing-card-heading {
    gap: 0.25rem;
    min-width: 0;
}

.thing-card-title {
    font-size: clamp(1rem, 1.8vw, 1.18rem);
}

.thing-card-creator {
    color: var(--color-subtle);
    font-size: 0.88rem;
}

.author-byline-handle {
    font-family: var(--font-mono);
}

.author-byline-handle-secondary {
    color: var(--color-muted);
}

.thing-card-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.thing-card-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: auto;
}

.thing-card-actions {
    align-self: stretch;
    display: flex;
    justify-content: space-between;
    gap: 0.65rem;
}

.thing-card-actions a {
    text-decoration: none;
}

.thing-card-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.7rem;
    margin: 0;
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.thing-card-stats div {
    display: contents;
}

.thing-card-stats dt {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.thing-card-stats dd {
    margin: 0;
}

/* Visually-hidden utility: keeps a heading/label in the accessibility tree
   (e.g. a route's <h1> during a loading skeleton) without rendering it. */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.thing-card-action {
    margin: -0.18rem -0.28rem;
    padding: 0.18rem 0.28rem;
    cursor: pointer;
    color: var(--color-muted);
    background: transparent;
    border: 0;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.2;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.thing-card-action:hover,
.thing-card-action[aria-pressed="true"] {
    color: var(--color-tertiary);
    background: color-mix(in srgb, var(--color-primary) 8%, transparent);
    outline: 1px solid var(--color-primary);
    outline-offset: 0;
}

.thing-card-action:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
    outline-offset: 1px;
}

.thing-card-action:disabled {
    cursor: wait;
    opacity: 0.6;
}

.thing-card-action-error {
    flex-basis: 100%;
    color: var(--color-error);
    font-size: 0.78rem;
}

/* Creator links on cards and thing detail */

.author-byline-link {
    color: var(--color-secondary);
}

.author-byline-link:hover {
    color: var(--color-link);
}

/* Buttons */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    width: fit-content;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-panel);
    padding: 0.55rem 0.8rem;
    color: var(--color-text);
    background: var(--color-surface);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
}

.button:hover {
    border-color: var(--color-primary);
    color: var(--color-tertiary);
    text-decoration: none;
}

.button-primary {
    border-color: var(--color-action);
    background: var(--color-action);
    color: var(--color-base);
}

.button-primary:hover {
    filter: brightness(1.04);
    color: var(--color-base);
}

.button-secondary {
    border-color: var(--color-primary);
    color: var(--color-tertiary);
}

.button-ghost {
    background: transparent;
}

.button:disabled,
.button[disabled] {
    cursor: not-allowed;
    opacity: 0.52;
    filter: saturate(0.7);
}

.button:disabled:hover,
.button[disabled]:hover {
    border-color: var(--color-border);
    color: var(--color-text);
    filter: saturate(0.7);
}

.button-row,
.tab-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Tabs, status pills */

.tab,
.status-pill {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-panel);
    background: transparent;
    color: var(--color-subtle);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1;
    padding: 0.35rem 0.5rem;
}

.tab.is-active,
.status-pill {
    border-color: var(--color-primary);
    color: var(--color-tertiary);
    background: color-mix(in srgb, var(--color-primary) 8%, transparent);
}

.tab:disabled,
.tab[disabled] {
    cursor: not-allowed;
    opacity: 0.52;
    filter: saturate(0.7);
}

.status-muted {
    border-color: var(--color-muted);
    color: var(--color-muted);
    background: transparent;
}

.status-error {
    border-color: var(--color-error);
    color: var(--color-error);
    background: color-mix(in srgb, var(--color-error) 8%, transparent);
}

/* Reusable state cards (loading / empty / error) */

.state-card {
    display: grid;
    align-content: start;
    gap: 0.75rem;
    min-height: 11rem;
    padding: 1rem;
}

.state-card h2 {
    margin: 0;
    color: var(--color-emphasis);
    letter-spacing: -0.03em;
}

.state-card p {
    margin: 0;
    color: var(--color-subtle);
}

.error-state {
    border-color: color-mix(in srgb, var(--color-error) 55%, var(--color-border));
}

/* Ordered lists (instructions, print settings) shared across detail + publish */

.instruction-list,
.print-settings {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--color-text);
}

.instruction-list li + li,
.print-settings li + li {
    margin-top: 0.35rem;
}

/* Skeletons */

.skeleton-line,
.skeleton-box {
    background: linear-gradient(90deg, var(--color-overlay), var(--color-highlight), var(--color-overlay));
    background-size: 200% 100%;
    animation: blueprint-skeleton 1.8s linear infinite;
}

.skeleton-line {
    height: 0.7rem;
    width: 65%;
}

.skeleton-wide {
    width: 90%;
}

.skeleton-box {
    min-height: 5rem;
}

@keyframes blueprint-skeleton {
    from {
        background-position: 200% 0;
    }
    to {
        background-position: -200% 0;
    }
}