/* ============================================================
   /resources — Articles, case studies and guides
   - Mobile-first; 768px and 1024px breakpoints
   - .resource-card / .resources__grid live in global.css
   ============================================================ */

/* ============================================================
   1. HERO + filter chips
   ============================================================ */
.rs-hero {
    position: relative;
    padding: clamp(3rem, 8vw, 5rem) 0 clamp(2.5rem, 6vw, 3.5rem);
    background:
        radial-gradient(120% 80% at 50% 0%, #0E2A4D 0%, #061629 60%, #03101F 100%);
    color: #E8EEF7;
    overflow: hidden;
    isolation: isolate;
}
.rs-hero__bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.rs-hero__orb {
    position: absolute;
    width: clamp(260px, 38vw, 480px);
    aspect-ratio: 1;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
}
.rs-hero__orb--primary {
    background: var(--color-primary-light);
    top: -100px; right: -80px;
    opacity: 0.45;
}
.rs-hero__orb--accent {
    background: var(--color-accent);
    bottom: -120px; left: -60px;
    opacity: 0.30;
}
.rs-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(160, 200, 255, 0.06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(160, 200, 255, 0.06) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
            mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
}
.rs-hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(2rem, 5vw, 3rem);
    align-items: center;
}
@media (min-width: 1024px) {
    .rs-hero__inner { grid-template-columns: 1.4fr 1fr; }
}
.rs-hero__copy { max-width: 640px; }
.rs-hero__eyebrow {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-accent-light);
    padding: 0.4rem 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}
.rs-hero__title {
    color: #FFFFFF;
    font-size: clamp(1.85rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 0.85rem;
    max-width: 24ch;
}
.rs-hero__lede {
    color: #C7D2E1;
    font-size: var(--text-base);
    margin-bottom: 1.75rem;
    max-width: 60ch;
}

/* Filter chips */
.rs-filter__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.rs-chip {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0.45rem 0.95rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-full);
    color: #DCE7F5;
    font-size: var(--text-sm);
    font-weight: 600;
    transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.rs-chip:hover {
    background: rgba(255, 255, 255, 0.10);
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.30);
}
.rs-chip.is-active {
    background: var(--color-accent);
    color: #1a1200;
    border-color: var(--color-accent);
}
.rs-chip.is-active:hover {
    background: var(--color-accent-dark);
    color: #FFFFFF;
}

/* ============================================================
   2. LIST — preview note + featured + grid + empty state
   ============================================================ */
.rs-list {
    padding: var(--section-pad-y) 0;
    background: var(--color-bg);
}
.rs-preview-note {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    max-width: 80ch;
    margin: 0 0 2rem;
    padding: 0.85rem 1.1rem;
    background: var(--color-surface);
    border: 1px dashed var(--color-divider);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}
.rs-preview-note > span[aria-hidden] {
    color: var(--color-accent);
    font-size: 0.7rem;
}

/* ----- Featured card ----- */
.rs-featured {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin-bottom: 2rem;
    background: var(--color-surface);
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease;
}
.rs-featured:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
@media (min-width: 768px) {
    .rs-featured { grid-template-columns: 1.4fr 1fr; }
}
.rs-featured__copy {
    padding: 1.75rem 1.75rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.rs-featured__flag {
    align-self: flex-start;
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
    color: var(--color-accent-dark);
    padding: 0.25rem 0.6rem;
    background: rgba(245, 141, 2, 0.10);
    border-radius: var(--radius-full);
}
[data-theme="dark"] .rs-featured__flag { color: var(--color-accent-light); background: rgba(245, 141, 2, 0.18); }
.rs-featured__tag {
    align-self: flex-start;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
}
.rs-featured__title {
    font-size: clamp(1.25rem, 2.4vw, 1.6rem);
    font-weight: 700;
    line-height: 1.25;
    margin: 0.15rem 0 0.5rem;
}
.rs-featured__title a { color: var(--color-text); }
.rs-featured__title a:hover { color: var(--color-primary); }
.rs-featured__excerpt {
    color: var(--color-text-muted);
    font-size: var(--text-base);
    margin: 0;
}
.rs-featured__meta {
    margin-top: 0.4rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: var(--text-xs);
    color: var(--color-text-faint);
}
.rs-featured__meta span[aria-hidden] { color: var(--color-text-faint); }
.rs-featured__type {
    color: var(--color-text-muted);
    font-weight: 600;
}
.rs-featured__cta {
    margin-top: 0.6rem;
    align-self: flex-start;
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-primary);
}
.rs-featured__cta:hover { color: var(--color-primary-dark); }
[data-theme="dark"] .rs-featured__cta:hover { color: var(--color-primary-light); }

/* Visual side panel — abstract glyph from the tag's first letter */
.rs-featured__art {
    position: relative;
    min-height: 180px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    overflow: hidden;
}
.rs-featured__art::before,
.rs-featured__art::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
}
.rs-featured__art::before {
    width: 60%; aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.30);
    top: -10%; right: -10%;
}
.rs-featured__art::after {
    width: 50%; aspect-ratio: 1;
    background: var(--color-accent);
    bottom: -15%; left: -5%;
    opacity: 0.55;
}
.rs-featured__art-glyph {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-family: var(--font-serif);
    font-size: clamp(4rem, 12vw, 7rem);
    font-weight: 800;
    color: rgba(255, 255, 255, 0.55);
    z-index: 1;
    line-height: 1;
}

/* ----- Standard grid (uses .resource-card from global.css) ----- */
.rs-grid {
    /* gap and columns inherited from .resources__grid in global.css */
}
.rs-card-meta {
    margin: 0;
    font-size: var(--text-xs);
    color: var(--color-text-faint);
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.rs-card-meta span[aria-hidden] { color: var(--color-text-faint); }

/* ----- Empty state ----- */
.rs-empty {
    padding: 3rem 1.5rem;
    text-align: center;
    background: var(--color-surface);
    border: 1px dashed var(--color-divider);
    border-radius: var(--radius-lg);
}
.rs-empty__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}
.rs-empty__text {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}
.rs-empty__text a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================================
   3. CLOSING CTA — dark band
   ============================================================ */
.rs-cta {
    padding: clamp(3rem, 7vw, 5rem) 0;
    background:
        radial-gradient(120% 100% at 100% 0%, #0E2A4D 0%, #061629 60%, #03101F 100%);
    color: #E8EEF7;
    overflow: hidden;
}
.rs-cta__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}
@media (min-width: 768px) {
    .rs-cta__inner { grid-template-columns: 1.4fr 1fr; gap: 3rem; }
}
.rs-cta__title {
    color: #FFFFFF;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.rs-cta__text {
    color: #C7D2E1;
    font-size: var(--text-base);
    max-width: 50ch;
}
.rs-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}
@media (min-width: 768px) {
    .rs-cta__actions { justify-content: flex-end; }
}