/*
 * Silver Glass — layer 3: components.
 *
 * Every class DESIGN.md section 4 names. Compose pages from these; a per-section
 * stylesheet is for genuinely bespoke layout only.
 *
 * The glass recipe, used by every raised surface here:
 *   background var(--glass), backdrop-filter var(--blur),
 *   1px var(--glass-border), var(--shadow-sm), var(--radius).
 */

/* --- Hero --- */
.hero {
    position: relative;
    overflow: hidden;
    padding: 2.5rem 2rem;
    margin-bottom: 1.75rem;
    background: var(--glass);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
}

.hero::after {
    content: "";
    position: absolute;
    inset: -40% 40% 40% -10%;
    background: radial-gradient(closest-side, var(--glass-strong), transparent);
    pointer-events: none;
}

.hero > * {
    /*
     * z-index is load-bearing, not decoration. ::after is generated as the last
     * child, so without an explicit stacking order the radial glow paints over
     * the heading and washes the text out.
     */
    position: relative;
    z-index: 1;
}

.hero h1 {
    margin-bottom: .35rem;
}

/* --- Panel / section --- */
.panel,
.section {
    padding: 1.5rem 1.6rem;
    margin-bottom: 1.5rem;
    background: var(--glass);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius);
}

.panel > :last-child,
.section > :last-child,
.hero > :last-child {
    margin-bottom: 0;
}

/* --- Eyebrow & lead --- */
.eyebrow {
    display: block;
    font-size: .78rem;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--ink-400);
    margin-bottom: .35rem;
}

.lead {
    font-size: 1.08rem;
    color: var(--ink-500);
}

/* --- Card grid --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.card {
    display: block;
    padding: 1.15rem 1.25rem;
    background: var(--glass);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius);
}

a.card {
    text-decoration: none;
    color: inherit;
    transition: transform .18s ease, box-shadow .18s ease;
}

a.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card__icon {
    font-size: 1.3rem;
    line-height: 1;
    margin-bottom: .5rem;
}

.card__title {
    font-weight: 650;
    color: var(--ink-900);
    margin-bottom: .3rem;
}

.card__desc {
    color: var(--ink-500);
    font-size: .94rem;
    margin: 0;
}

.card__more {
    display: inline-block;
    margin-top: .6rem;
    font-size: .88rem;
    font-weight: 600;
    color: var(--accent-strong);
}

/* --- Feature list --- */
.feature-list {
    list-style: none;
    margin: 0 0 1rem;
    padding: 0;
    display: grid;
    gap: .6rem;
}

.feature-list > li {
    margin: 0;
    padding: .8rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
    background: var(--glass-faint);
}

/* --- Accordion (native details, no JS) --- */
.accordion {
    display: grid;
    gap: .6rem;
    margin-bottom: 1rem;
}

details.acc {
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
    background: var(--glass-faint);
    overflow: hidden;
}

details.acc > summary {
    list-style: none;
    cursor: pointer;
    padding: .8rem 1rem;
    font-weight: 600;
    color: var(--ink-900);
    display: flex;
    align-items: center;
    gap: .6rem;
}

details.acc > summary::-webkit-details-marker {
    display: none;
}

details.acc > summary::before {
    content: "+";
    display: inline-grid;
    place-items: center;
    width: 1.2rem;
    height: 1.2rem;
    flex: none;
    border-radius: 5px;
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-weight: 700;
}

details.acc[open] > summary::before {
    content: "\2013";
}

details.acc > summary:hover {
    color: var(--accent-strong);
}

.acc__body {
    padding: 0 1rem 1rem;
}

.acc__body > :last-child {
    margin-bottom: 0;
}

/* --- Code --- */
pre {
    margin: 0 0 1rem;
    padding: 1rem 1.1rem;
    overflow-x: auto;
    border-radius: var(--radius-sm);
    background: var(--code-bg);
    color: var(--code-ink);
    font-family: var(--mono);
    font-size: .88rem;
    line-height: 1.6;
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: inherit;
}

code {
    font-family: var(--mono);
    font-size: .9em;
    padding: .12em .38em;
    border-radius: 5px;
    background: var(--accent-soft);
    color: var(--accent-strong);
}

.code-label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: var(--ink-400);
    margin-bottom: .35rem;
}

/* --- Table --- */
.table-wrap {
    overflow-x: auto;
    margin: 0 0 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
    background: var(--glass-faint);
}

.table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: .93rem;
}

.table-wrap th,
.table-wrap td {
    text-align: left;
    padding: .65rem .85rem;
    border-bottom: 1px solid var(--hairline);
    vertical-align: top;
}

.table-wrap th {
    color: var(--ink-900);
    font-weight: 650;
    white-space: nowrap;
    background: var(--glass-strong);
}

.table-wrap tr:last-child td {
    border-bottom: 0;
}

/* --- Badge & chip --- */
.badge {
    display: inline-block;
    padding: .12rem .5rem;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 650;
    background: var(--silver-100);
    color: var(--ink-500);
    border: 1px solid var(--hairline);
}

.badge--accent {
    background: var(--accent-soft);
    color: var(--accent-strong);
    border-color: transparent;
}

.badge--ok {
    background: var(--ok-soft);
    color: var(--ok);
    border-color: transparent;
}

.badge--warn {
    background: var(--warn-soft);
    color: var(--warn);
    border-color: transparent;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-bottom: 1rem;
}

.chip {
    display: inline-block;
    padding: .28rem .7rem;
    border-radius: 999px;
    font-size: .85rem;
    background: var(--glass-strong);
    border: 1px solid var(--hairline);
    color: var(--ink-700);
}

/* --- Buttons --- */
.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin-bottom: 1rem;
}

.btn {
    display: inline-block;
    padding: .58rem 1.15rem;
    border-radius: 999px;
    font-size: .94rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    background: var(--glass-strong);
    color: var(--ink-900);
    border: 1px solid var(--hairline);
    box-shadow: var(--shadow-sm);
    transition: transform .15s ease, box-shadow .15s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--primary {
    background: linear-gradient(150deg, var(--accent), var(--accent-strong));
    color: var(--white);
    border-color: transparent;
}

.btn--sponsor {
    background: linear-gradient(150deg, var(--sponsor), var(--sponsor-deep));
    color: var(--white);
    border-color: transparent;
}

/* --- Callout --- */
.callout {
    display: flex;
    gap: .85rem;
    padding: 1rem 1.15rem;
    margin: 0 0 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
    border-left-width: 4px;
    background: var(--glass-faint);
}

.callout__icon {
    flex: none;
    font-size: 1.05rem;
    line-height: 1.5;
}

.callout__body > :last-child {
    margin-bottom: 0;
}

.callout__title {
    font-weight: 650;
    color: var(--ink-900);
    margin-bottom: .2rem;
}

.callout--info {
    border-left-color: var(--accent);
    background: var(--accent-soft);
}

.callout--warn {
    border-left-color: var(--warn);
    background: var(--warn-soft);
}

.callout--danger {
    border-left-color: var(--sponsor);
    background: var(--sponsor-soft);
}

/* --- Definition list --- */
.deflist {
    display: grid;
    gap: .1rem;
    margin: 0 0 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
    overflow: hidden;
}

.deflist__row {
    display: grid;
    grid-template-columns: minmax(140px, 24%) 1fr;
    gap: 1rem;
    padding: .7rem 1rem;
    background: var(--glass-faint);
    border-bottom: 1px solid var(--hairline);
}

.deflist__row:last-child {
    border-bottom: 0;
}

.deflist__term {
    font-weight: 650;
    color: var(--ink-900);
}

.deflist__row > :last-child {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .deflist__row {
        grid-template-columns: 1fr;
        gap: .2rem;
    }
}