/* ==========================================================
   portfolio.css — Portfolio Page Styles
   All styles for the portfolio hero, project grid, cards,
   case-study detail panels, galleries, and results.
   ========================================================== */

/* ── Portfolio Hero ──────────────────────────────────────── */
.portfolio-hero {
  background-image: url('../assets/portfolio-bg.jpg');
}

.portfolio-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(var(--green-rgb), 0.018) 0px,
    rgba(var(--green-rgb), 0.018) 1px,
    transparent 1px,
    transparent 4px
  );
  z-index: 2;
  pointer-events: none;
}

.portfolio-hero-content {
  z-index: 3;
}

.portfolio-hero-content .page-eyebrow {
  font-size: var(--size-xs);
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-sm);
}

.portfolio-hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 6rem);
  letter-spacing: 0.03em;
  line-height: 1;
  color: var(--white);
}

.portfolio-hero-content h1 span {
  color: var(--color-accent);
}

.portfolio-hero-content .sub {
  font-size: var(--size-lg);
  color: var(--grey-text);
  margin-top: var(--sp-md);
  max-width: 480px;
}

/* ── Category Section Headers ───────────────────────────── */
.portfolio-category-label {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-bottom: var(--sp-xl);
}

.portfolio-category-label .cat-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, rgba(var(--green-rgb), 0.4), transparent);
}

.portfolio-category-label .cat-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--color-accent);
}

.portfolio-category-label .cat-title {
  font-family: var(--font-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--grey-text);
}

/* ── Projects Grid ───────────────────────────────────────── */
/* 3-column Behance-style compact gallery */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
  margin-bottom: var(--sp-xl);
}

/* ── Project Card ────────────────────────────────────────── */
.project-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--color-border);
  background: var(--grey-1);
  cursor: pointer;
  transition: border-color var(--t-med), box-shadow var(--t-med), transform var(--t-med);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--t-med);
  z-index: 2;
}

.project-card:hover {
  border-color: rgba(var(--green-rgb), 0.4);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  transform: translateY(-4px);
}

.project-card.active {
  border-color: var(--color-accent);
  box-shadow: 0 0 32px rgba(var(--green-rgb), 0.15);
}

.project-card:hover::before,
.project-card.active::before {
  opacity: 1;
}

/* Sneak peek (in development) — clickable, subdued */
.project-card--sneak {
  opacity: 0.88;
}

.project-card--sneak .project-thumb img {
  filter: grayscale(35%) brightness(0.75);
}

.project-card--sneak:hover .project-thumb img {
  filter: grayscale(10%) brightness(0.9);
}

/* In development — locked (no case study) */
.project-card--locked {
  cursor: not-allowed;
  opacity: 0.82;
}

.project-card--locked::before {
  opacity: 0.35;
}

.project-card--locked:hover::before {
  opacity: 0.35;
}

.project-card--locked .project-thumb img {
  filter: grayscale(45%) brightness(0.65);
}

.project-card--locked .project-thumb-overlay {
  opacity: 1;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.35));
}

.project-card--locked .view-case-btn {
  color: var(--grey-text);
}

.project-card--locked .view-case-btn::before {
  content: '◆';
  font-size: 0.55rem;
  margin-right: 8px;
  color: var(--grey-text);
}

.project-card--locked .view-case-btn::after {
  content: none;
}

.section-intro-note {
  font-size: var(--size-sm);
  color: var(--silver);
  max-width: 52ch;
  margin-top: calc(var(--sp-sm) * -1);
  margin-bottom: var(--sp-xl);
  line-height: 1.65;
}

.section-intro-note strong {
  color: var(--white);
  font-weight: 600;
}

/* ── Thumbnail ───────────────────────────────────────────── */
/* Compact 3:2 ratio keeps cards gallery-sized, not poster-sized */
.project-thumb {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
  filter: grayscale(15%) brightness(0.85);
}

.project-card:hover .project-thumb img,
.project-card.active .project-thumb img {
  transform: scale(1.04);
  filter: grayscale(0%) brightness(1);
}

/* ── Cover Crossfade (two-artwork hover swap) ───────────────
   Used when a project has two artwork/cover images: the first
   is the resting-state cover, the second reveals on hover of
   the whole card. Two stacked, absolutely-positioned <img>
   elements crossfade via opacity — no JS required. */
.project-thumb--swap {
  position: relative;
}

.project-thumb--swap .thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* Slow, cinematic — opacity and brightness move together so the
     outgoing image sinks into black before the incoming one rises
     out of it, rather than a flat instant dissolve. */
  transition:
    opacity 1.4s cubic-bezier(0.4, 0, 0.2, 1),
    filter 1.4s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-thumb--swap .thumb-img--default {
  filter: grayscale(15%) brightness(0.85);
}

.project-thumb--swap .thumb-img--hover {
  opacity: 0;
  /* Starts fully black so it has somewhere to "rise from" on hover */
  filter: grayscale(15%) brightness(0);
}

.project-card:hover .project-thumb--swap .thumb-img--default,
.project-card.active .project-thumb--swap .thumb-img--default {
  opacity: 0;
  /* Fades out through black rather than just going transparent */
  filter: grayscale(15%) brightness(0);
}

.project-card:hover .project-thumb--swap .thumb-img--hover,
.project-card.active .project-thumb--swap .thumb-img--hover {
  opacity: 1;
  transform: scale(1.04);
  filter: grayscale(0%) brightness(1);
}

.project-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0));
  display: flex;
  align-items: flex-end;
  padding: var(--sp-md);
  opacity: 0;
  transition: opacity var(--t-med);
}

.project-card:hover .project-thumb-overlay,
.project-card.active .project-thumb-overlay {
  opacity: 1;
}

.view-case-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.view-case-btn::after {
  content: '→';
  transition: transform var(--t-fast);
}

.project-card:hover .view-case-btn::after,
.project-card.active .view-case-btn::after {
  transform: translateX(4px);
}

/* ── Card Meta ───────────────────────────────────────────── */
.project-meta {
  padding: var(--sp-sm) var(--sp-md) var(--sp-md);
}

.project-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--sp-xs);
}

.project-name {
  font-family: var(--font-display);
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.project-scope {
  font-size: var(--size-sm);
  color: var(--grey-text);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--sp-sm);
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid rgba(var(--green-rgb), 0.25);
  border-radius: var(--r-full);
  padding: 3px 10px;
}

/* Solid variant — flags which service tier a project maps to,
   at a glance, without reading the case study. */
.project-tag--tier {
  color: var(--black);
  background: var(--color-accent);
  border-color: var(--color-accent);
  font-weight: 700;
}

.wip-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--grey-text);
  padding: 2px 8px;
  border-radius: 2px;
  opacity: 0.7;
}

/* ── View Switching ────────────────────────────────────────── */
.portfolio-gallery-view {
  display: block;
}

.portfolio-gallery-view.hidden {
  display: none;
}

.project-detail-view {
  display: none;
  min-height: 100vh;
  background-color: var(--color-bg);
  padding-bottom: var(--sp-3xl);
}

.project-detail-view.active {
  display: block;
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Back Bar ────────────────────────────────────────────── */
.detail-back-bar {
  position: sticky;
  top: var(--nav-height);
  background: rgba(26, 28, 27, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--sp-sm) 0;
  z-index: 90;
}

.detail-back-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.back-btn {
  background: transparent;
  border: none;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  transition: color var(--t-fast);
}

.back-btn:hover {
  color: var(--white);
}

.detail-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--grey-text);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Case Study Detail Panel ─────────────────────────────── */
.case-detail-inner {
  background: var(--black);
  border-radius: 0;
  overflow: hidden;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.case-detail-inner > * {
  position: relative;
  z-index: 1;
}

/* ── Case Hero Image ─────────────────────────────────────── */
.case-hero-img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.6);
  display: block;
}

/* ── Case Header Inside ──────────────────────────────────── */
.case-header-inside {
  padding: var(--sp-2xl) var(--sp-xl) var(--sp-xl);
  background: linear-gradient(to bottom, rgba(var(--green-rgb), 0.04), transparent);
}

.case-num-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--sp-md);
}

.case-num-badge .num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--color-accent);
  padding: 4px 12px;
  border-radius: 2px;
}

.case-num-badge .divider {
  width: 32px;
  height: 1px;
  background: rgba(var(--green-rgb), 0.5);
}

.case-num-badge .label-txt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--grey-text);
}

.case-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: var(--sp-md);
}

.case-title span {
  color: var(--color-accent);
}

/* ── Case title as a link (e.g. Joueur Élite → GitHub) ─────── */
.case-title-link {
  color: var(--white);
  text-decoration: none;
  transition: color var(--t-fast);
}

.case-title-link:hover,
.case-title-link:focus-visible {
  color: var(--color-accent);
}

.case-title-link-icon {
  display: inline-block;
  font-size: 0.5em;
  color: var(--color-accent);
  vertical-align: super;
}

/* ── Tier strip — one glance at which service package a case
   study maps to, plus a handful of scannable hashtags. Kept
   deliberately short: clients skim, they don't read paragraphs. ── */
.tier-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-lg);
}

.tier-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--color-accent);
  border-radius: var(--r-full);
  padding: 5px 14px;
  white-space: nowrap;
}

.tier-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--r-full);
  padding: 3px 10px;
}

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-lg);
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-meta-item .meta-key {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  opacity: 0.8;
}

.hero-meta-item .meta-val {
  font-size: var(--size-sm);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.05em;
}

.hero-meta-item .meta-val a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero-meta-item .meta-val a:hover {
  color: var(--white);
}

/* ── Project links (live site, repo, demo) ───── */
.project-links-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  margin-top: var(--sp-lg);
  padding-top: var(--sp-md);
  border-top: 1px solid rgba(var(--green-rgb), 0.15);
}

.project-link-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--black);
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--r-sm);
  transition: background-color var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.project-link-chip:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.project-link-chip--ghost {
  background: transparent;
  color: var(--color-accent);
  border-color: rgba(var(--green-rgb), 0.45);
}

.project-link-chip--ghost:hover {
  background: rgba(var(--green-rgb), 0.12);
  color: var(--white);
  border-color: var(--color-accent);
}

.project-link-chip--muted {
  cursor: default;
  background: var(--grey-2);
  color: var(--silver);
  border-color: var(--grey-2);
}

.project-link-chip--muted:hover {
  background: var(--grey-2);
  color: var(--silver);
  border-color: var(--grey-2);
}

.case-sneak-banner {
  max-width: 1200px;
  margin: var(--sp-md) auto var(--sp-lg);
  padding: var(--sp-md) var(--sp-lg);
  border: 1px dashed rgba(var(--green-rgb), 0.35);
  border-radius: var(--r-md);
  background: rgba(var(--green-rgb), 0.06);
  font-size: var(--size-sm);
  color: var(--silver);
  line-height: 1.6;
}

.case-sneak-banner strong {
  color: var(--white);
}

/* ── Case Study Sections ─────────────────────────────────── */
.cs-section {
  padding: var(--sp-2xl) var(--sp-xl);
  border-top: 1px solid rgba(var(--green-rgb), 0.1);
}

.cs-section:first-of-type {
  border-top: none;
}

.cs-section-label {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-xl);
}

.cs-section-label .num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  min-width: 32px;
}

.cs-section-label .line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, rgba(var(--green-rgb), 0.35), transparent);
}

.cs-section-label .title {
  font-family: var(--font-mono);
  font-size: var(--size-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey-text);
}

/* ── Challenge Grid ──────────────────────────────────────── */
.challenge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}

.challenge-stat-col {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.challenge-stat {
  padding: var(--sp-md);
  border: 1px solid rgba(var(--green-rgb), 0.12);
  border-radius: var(--r-md);
  background: var(--grey-1);
}

.challenge-stat .stat-key {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 4px;
  display: block;
}

.challenge-stat .stat-val {
  font-size: var(--size-base);
  font-weight: 600;
  color: var(--white);
}

.challenge-body h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--sp-md);
  color: var(--white);
}

.challenge-body h2 span {
  color: var(--color-accent);
}

.challenge-body p {
  font-size: var(--size-base);
  line-height: 1.75;
  color: var(--grey-text);
  margin-bottom: var(--sp-md);
}

/* ── Approach Cards ──────────────────────────────────────── */
.approach-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sp-md);
}

.approach-card {
  padding: var(--sp-lg);
  border: 1px solid rgba(var(--green-rgb), 0.12);
  border-radius: var(--r-md);
  background: var(--grey-1);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.approach-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.approach-card:hover {
  border-color: rgba(var(--green-rgb), 0.3);
  box-shadow: 0 0 24px rgba(var(--green-rgb), 0.08);
}

.approach-card:hover::before {
  opacity: 1;
}

.approach-card .step-num {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: var(--sp-md);
}

.approach-card h3 {
  font-size: var(--size-lg);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--sp-sm);
}

.approach-card p {
  font-size: var(--size-sm);
  line-height: 1.65;
  color: var(--grey-text);
}

/* ── Gallery ─────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-sm);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid rgba(var(--green-rgb), 0.1);
}

.gallery-item.featured {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 7;
}

.gallery-item:not(.featured) {
  aspect-ratio: 4 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
  filter: grayscale(10%) brightness(0.92);
}

.gallery-item:hover img {
  transform: scale(1.03);
  filter: grayscale(0%) brightness(1);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-md);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

/* ── Results ─────────────────────────────────────────────── */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--sp-md);
  margin-bottom: var(--sp-2xl);
}

.result-stat {
  padding: var(--sp-lg);
  border: 1px solid rgba(var(--green-rgb), 0.12);
  border-radius: var(--r-md);
  background: var(--grey-1);
  text-align: center;
}

.result-stat .big-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
}

.result-stat .result-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey-text);
  margin-top: var(--sp-xs);
}

.portfolio-result-body {
  max-width: 680px;
}

.portfolio-result-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--sp-md);
}

.portfolio-result-text {
  font-size: var(--size-base);
  line-height: 1.75;
  color: var(--grey-text);
}

/* ── Detail Footer Nav ────────────────────────────────────── */
.detail-footer-nav {
  padding: var(--sp-xl) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--sp-2xl);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  /* Tablet: drop to 2 columns */
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* Mobile: single column */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .challenge-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item.featured {
    aspect-ratio: 4 / 3;
  }

  .cs-section {
    padding: var(--sp-xl) var(--sp-md);
  }

  .case-header-inside {
    padding: var(--sp-xl) var(--sp-md);
  }

  .case-sneak-banner {
    margin-left: var(--sp-md);
    margin-right: var(--sp-md);
  }

  .detail-breadcrumb {
    display: none;
  }
}

/* ════════════════════════════════════
   SPARSE GRID OVERRIDE
   (moved from a page-scoped <style> block in portfolio.html's
   <head>. Kept as an unconditional override placed after the
   responsive rules above — same cascade position it held as an
   inline <style> block — so behavior is unchanged.)

   A grid built for many cards looks sparse with only one or two —
   cap the track width and left-align instead of stretching a lone
   card across the full row. Safe to remove once each section has
   enough projects to fill a row naturally.
════════════════════════════════════ */
.projects-grid {
  grid-template-columns: repeat(auto-fill, minmax(300px, 360px));
  justify-content: flex-start;
}