/* ==========================================================================
   Projects: portfolio.php (list) + portfolio-details.php (case study).
   Tokens only (tokens.css); shared classes from components.css.
   ========================================================================== */

/* ---------- Section head (title left, filter/link right) ---------- */
.ab-proj-head {
    display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
    gap: 16px 32px; margin-bottom: clamp(1.75rem, 1.25rem + 1.5vw, 2.5rem);
}
.ab-proj-head .ab-title { margin-bottom: 0; }

/* ---------- Filter (pill tabs, aria-pressed toggle buttons) ---------- */
.ab-proj-filter { display: flex; flex-wrap: wrap; gap: 8px; }
.ab-proj-filter[hidden] { display: none; }
.ab-proj-filter__btn {
    min-height: 44px; padding: 0 18px;
    font: 600 .875rem/1 var(--ab-font); color: var(--ab-text-soft);
    background: var(--ab-white); border: 1px solid var(--ab-gray-2); border-radius: var(--ab-radius-pill);
    cursor: pointer;
    transition: background-color .2s var(--ab-ease), color .2s var(--ab-ease), border-color .2s var(--ab-ease);
}
.ab-proj-filter__btn:hover { color: var(--ab-primary); border-color: var(--ab-primary-100); background: var(--ab-primary-50); }
.ab-proj-filter__btn[aria-pressed="true"] {
    background: var(--ab-primary); border-color: var(--ab-primary); color: var(--ab-white);
    box-shadow: var(--ab-shadow-primary);
}

/* ---------- Project card (extends .ab-card) ---------- */
.ab-proj-grid > [hidden] { display: none; }
.ab-proj-card .ab-card__media .ab-badge { left: 12px; right: auto; }
.ab-proj-card .ab-card__title { font: var(--ab-h4); }
.ab-proj-card__place {
    display: flex; align-items: center; gap: .35rem; margin: 0;
    font: var(--ab-small); font-size: .8125rem; color: var(--ab-text-muted);
}
.ab-proj-card__place i { color: var(--ab-primary); }
.ab-proj-card__meta {
    list-style: none; margin: 0 0 .25rem; padding: .75rem 0 0;
    display: flex; flex-wrap: wrap; gap: 6px 16px;
    border-top: 1px solid var(--ab-gray-2);
    font: var(--ab-small); font-size: .8125rem; color: var(--ab-text-soft);
}
.ab-proj-card__meta li { display: inline-flex; align-items: center; gap: .35rem; }
.ab-proj-card__meta i { color: var(--ab-gray-3); }
.ab-proj-card__foot {
    display: flex; align-items: flex-end; justify-content: space-between; gap: 12px;
    padding-top: .5rem;
}
.ab-proj-card__value { margin: 0; display: flex; flex-direction: column; }
.ab-proj-card__value span { font: var(--ab-caption); color: var(--ab-text-muted); }
.ab-proj-card__value strong { font: 700 1.125rem/1.3 var(--ab-font); color: var(--ab-dark); }
.ab-proj-card__cta {
    display: inline-flex; align-items: center; gap: .4rem; margin-left: auto;
    font: 600 .875rem/1.2 var(--ab-font); color: var(--ab-primary);
}
.ab-proj-card__cta i { transition: transform .2s var(--ab-ease); }
.ab-proj-card:hover .ab-proj-card__cta i { transform: translateX(4px); }
.ab-proj-empty { text-align: center; color: var(--ab-text-muted); margin: 2rem 0 0; }

/* ---------- Case study hero ---------- */
.ab-case-hero__inner { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 32px; }
.ab-case-hero .ab-hero__content { max-width: 680px; }
.ab-case-chips { list-style: none; margin: 0 0 1.75rem; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.ab-case-chips li {
    display: inline-flex; align-items: center; gap: .45rem;
    padding: .5rem .9rem; border-radius: var(--ab-radius-pill);
    background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
    font: var(--ab-small); color: rgba(255, 255, 255, .78);
}
.ab-case-chips i { color: var(--ab-primary-300); }
.ab-case-chips strong { color: var(--ab-white); font-weight: 600; }
.ab-case-hero__tag {
    display: flex; align-items: center; gap: 14px; max-width: 340px;
    padding: 16px 20px; border-radius: var(--ab-radius-lg);
    background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
    -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.ab-case-hero__tag strong { display: block; color: var(--ab-white); font-weight: 700; }
.ab-case-hero__tag small { display: block; color: rgba(255, 255, 255, .78); font-size: .8125rem; }

/* ---------- Case study body ---------- */
.ab-case-layout { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 992px) {
    .ab-case-layout { grid-template-columns: minmax(0, 1fr) 360px; gap: 56px; }
    .ab-case-aside { position: sticky; top: calc(var(--ab-header-h) + 24px); }
}
.ab-case-main { display: grid; gap: clamp(2.5rem, 2rem + 2vw, 3.5rem); }
.ab-case-prose { color: var(--ab-text-soft); }
.ab-case-prose > :last-child { margin-bottom: 0; }
.ab-case-prose p { margin: 0 0 1rem; }
.ab-case-block > .ab-lead:last-child, .ab-case-block .ab-case-prose { max-width: 70ch; }

.ab-case-split { display: grid; gap: 20px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 768px) { .ab-case-split { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.ab-case-panel {
    padding: 28px 24px; border-radius: var(--ab-radius-lg);
    background: var(--ab-gray-1); border: 1px solid var(--ab-gray-2);
}
.ab-case-panel--solution { background: var(--ab-primary-50); border-color: var(--ab-primary-100); }
.ab-case-panel__title { font: var(--ab-h3); color: var(--ab-dark); margin: 1rem 0 .75rem; }

.ab-case-metrics {
    list-style: none; margin: 1.5rem 0 0; padding: 0;
    display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 576px) { .ab-case-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.ab-case-metric {
    display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: 16px; row-gap: 2px; align-items: start;
    padding: 20px; border-radius: var(--ab-radius);
    background: var(--ab-white); border: 1px solid var(--ab-gray-2); box-shadow: var(--ab-shadow-sm);
}
.ab-case-metric .ab-icon-badge { grid-row: span 2; }
.ab-case-metric__title { font: var(--ab-h4); color: var(--ab-dark); }
.ab-case-metric__text { font: var(--ab-small); color: var(--ab-text-soft); }

.ab-case-scope { margin-top: 1.5rem; }
@media (min-width: 768px) { .ab-case-scope { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; } }

/* ---------- Datasheet (sidebar) ---------- */
.ab-case-sheet {
    padding: 28px 24px; border-radius: var(--ab-radius-lg);
    background: var(--ab-white); border: 1px solid var(--ab-gray-2); box-shadow: var(--ab-shadow);
    border-top: 4px solid var(--ab-primary);
}
.ab-case-sheet__title { font: var(--ab-h4); color: var(--ab-dark); margin: 0 0 1.25rem; }
.ab-case-sheet__sub {
    font: 700 var(--ab-eyebrow-size)/1.4 var(--ab-font); letter-spacing: var(--ab-eyebrow-tracking);
    text-transform: uppercase; color: var(--ab-primary); margin: 1.5rem 0 .5rem;
}
.ab-case-specs { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.ab-case-specs li { display: flex; align-items: center; gap: 14px; }
.ab-case-specs__label { display: block; font: var(--ab-caption); color: var(--ab-text-muted); text-transform: uppercase; letter-spacing: .06em; }
.ab-case-specs strong { display: block; font-weight: 600; color: var(--ab-dark); font-size: .9375rem; line-height: 1.4; }
.ab-case-facts { margin: 0 0 1.5rem; }
.ab-case-facts div {
    display: flex; justify-content: space-between; gap: 16px;
    padding: .65rem 0; border-bottom: 1px dashed var(--ab-gray-2);
    font: var(--ab-small);
}
.ab-case-facts dt { color: var(--ab-text-muted); font-weight: 400; }
.ab-case-facts dd { margin: 0; color: var(--ab-dark); font-weight: 600; text-align: right; }
.ab-case-sheet > .ab-btn:first-child { margin-top: 0; }
.ab-case-specs + .ab-btn { margin-top: 1.5rem; }

@media (prefers-reduced-motion: reduce) {
    .ab-proj-filter__btn, .ab-proj-card__cta i { transition: none; }
}