/* ============================================================
   Skills page — 3D spinning cert logos, floating tool logos,
   expanding demo cards, hover-label toolstack.
   Motion is gated on .is-in (starts when scrolled into view),
   simplified on phones, and killed under reduced-motion.
   ============================================================ */

/* ---------- Section 1 · Certifications ---------- */
.cert-band {
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(217, 99, 59, 0.06), transparent 60%),
    linear-gradient(180deg, var(--color-canvas-warm) 0%, #f1f0ee 55%, var(--color-canvas-warm) 100%);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.cert-headline {
  margin: 0 0 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
}
.cert-hero-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.28em;
}
.cert-hero-num {
  position: relative;
  display: inline-block;
  padding-bottom: 0.14em;
  transform: translateX(-0.12em);
  font-size: clamp(56px, 8vw, 104px);
  line-height: 0.9;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--cert-accent, #d9633b);
  font-variant-numeric: tabular-nums;
}
.cert-hero-num::after {
  content: "";
  position: absolute;
  left: 0.06em;
  bottom: 0;
  width: 0.6em;
  height: 0.08em;
  border-radius: var(--r-full);
  background: var(--cert-accent, #d9633b);
  box-shadow: 0 0 22px 2px rgba(217, 99, 59, 0.45);
}
.cert-hero-label {
  font-size: clamp(30px, 4.4vw, 64px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  line-height: 0.95;
}
.cert-hero-sub {
  font-size: clamp(18px, 2.4vw, 34px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-ink);
  line-height: 1;
}
.cert-count {
  color: var(--cert-accent, #d9633b);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Compact click-to-expand cert chips */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 940px;
  margin: 0 auto;
  text-align: left;
}
.cert-cell { min-width: 0; align-self: start; }
.cert-chip {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 18px 22px;
  background: var(--color-canvas);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  cursor: pointer;
  text-align: left;
  font: inherit;
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}
.cert-chip:hover {
  border-color: var(--rule-strong);
  transform: translateY(-2px);
}
.cert-chip.open {
  border-color: var(--rule-strong);
}

/* Badge — small in chip, continuous gentle sway */
.cert-badge-scene {
  width: 64px;
  height: 64px;
  perspective: 520px;
  flex-shrink: 0;
}
.cert-badge-tilt {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  animation: cert-tilt 3.8s ease-in-out infinite alternate;
}
@keyframes cert-tilt {
  from { transform: rotateY(-15deg); }
  to   { transform: rotateY(15deg); }
}

.cert-badge-face {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert-badge-face img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.cert-badge-face.is-ph {
  border: 1px dashed var(--rule-strong);
  border-radius: var(--r-full);
  background: var(--color-canvas-warm);
  color: var(--color-stone);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
}

.cert-cap { min-width: 0; }
.cert-cred { font-size: 16px; font-weight: 600; letter-spacing: -0.015em; color: var(--color-ink); line-height: 1.25; }
.cert-meta { font-size: 12.5px; color: var(--color-stone); margin-top: 4px; letter-spacing: 0.01em; }
.cert-desc-wrap {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 360ms cubic-bezier(0.16,1,0.3,1), opacity 260ms ease, margin-top 260ms ease;
}
.cert-chip.open .cert-desc-wrap {
  max-height: 120px;
  opacity: 1;
  margin-top: 10px;
}
.cert-desc { font-size: 14px; line-height: 1.5; color: var(--color-graphite); margin: 0; }
.cert-chevron {
  color: var(--color-stone);
  display: inline-flex;
  flex-shrink: 0;
  transition: color 200ms ease;
}
.cert-chip:hover .cert-chevron { color: var(--color-ink); }

/* ---------- Section 2 · Featured skills ---------- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
}
.skill-card:not(.open) { grid-column: span 2; }
/* With 5 cards (Higgsfield hidden): 3 on top, bottom 2 stretch to fill the row */
.skill-card:not(.open):nth-last-child(2):nth-child(4),
.skill-card:not(.open):nth-last-child(1):nth-child(5) { grid-column: span 3; }
.skill-card.open { grid-column: span 6; }
.skill-card {
  min-width: 0;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 28px;
  background: var(--color-canvas);
  display: flex;
  flex-direction: column;
  transition: border-color 240ms ease;
}
.skill-card:hover { border-color: var(--rule-strong); }
.skill-card:not(.open) { min-height: 112px; justify-content: center; }
.skill-card.open { grid-column: span 6; }

.skill-head {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.skill-logo {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: var(--r-md);
  border: 1px dashed var(--rule-strong);
  background: var(--color-canvas-warm);
  color: var(--color-stone);
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; letter-spacing: 0.04em; text-transform: uppercase; text-align: center;
  animation: skill-float 5.5s ease-in-out infinite;
}
.skill-logo img { width: 100%; height: 100%; object-fit: contain; border-radius: inherit; }
.skill-logo.has-img { border: none; background: transparent; padding: 0; overflow: hidden; }
.skill-logo.is-round { border-radius: var(--r-full); }
.skill-logo.is-round img { object-fit: cover; transform: scale(1.14); }
@keyframes skill-float {
  0%, 100% { transform: translateY(-4px); }
  50%      { transform: translateY(4px); }
}
.skill-name { font-size: 19px; font-weight: 500; letter-spacing: -0.02em; color: var(--color-ink); line-height: 1.2; }
.skill-kind { font-size: 12.5px; color: var(--color-stone); margin-top: 3px; }

.skill-panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 480ms cubic-bezier(0.16,1,0.3,1), opacity 380ms ease, margin-top 380ms ease;
  margin-top: 0;
}
.skill-card.open .skill-panel {
  max-height: 760px;
  opacity: 1;
  margin-top: 28px;
}
.skill-panel-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
}
.skill-panel-inner:not(.has-pair) .demo-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.skill-panel-inner:not(.has-pair) .demo-text p { max-width: 42ch; }
.demo-ph {
  border: 1px dashed var(--rule-strong);
  background: var(--color-surface-cool);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-graphite);
  font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; text-align: center;
  padding: 16px;
}

/* ---- Two-frame demo (Meta Ads briefs) — photos left, text right ---- */
.skill-panel-inner.has-pair {
  display: flex;
  gap: 40px;
  align-items: center;
}
.demo-pair {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 250px);
  gap: 18px;
}
.demo-pair.is-single {
  grid-template-columns: 280px;
}
.demo-frame {
  margin: 0;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--color-canvas);
  height: 330px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.demo-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.has-pair > .demo-text {
  flex: 1 1 0;
  min-width: 0;
  max-width: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.has-pair > .demo-text p { max-width: 46ch; }
@media (max-width: 760px) {
  .skill-panel-inner.has-pair { flex-direction: column; gap: 28px; align-items: stretch; }
  .demo-pair { grid-template-columns: repeat(2, 1fr); width: 100%; }
  .demo-pair.is-single { grid-template-columns: 1fr; }
}
@media (max-width: 460px) {
  .demo-pair { grid-template-columns: 1fr; }
}

/* ---- Vertical Instagram media gallery (Higgsfield) ---- */
.skill-panel-gallery {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 40px;
}
.skill-panel-gallery .ig-strip { flex: 0 0 auto; }
.ig-caption { flex: 1 1 0; min-width: 0; padding-top: 4px; }
.skill-panel-gallery:not(.is-stack) .ig-caption { text-align: center; }
.ig-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: flex-start;
}
.ig-frame {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ig-frame-media {
  position: relative;
  height: 300px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--color-surface-cool);
  border: 1px solid var(--rule);
}
.ig-frame.is-carousel .ig-frame-media { aspect-ratio: 4 / 5; }
.ig-frame.is-reel .ig-frame-media { aspect-ratio: 9 / 16; }

/* Box (landscape) video gallery — 3 across, caption below */
.skill-panel-gallery.is-stack { flex-direction: column; gap: 24px; align-items: center; }
.skill-panel-gallery.is-stack .ig-caption { flex: none; }
.ig-strip.is-boxes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  gap: 16px;
}
.ig-frame.is-box { width: 100%; min-width: 0; }
.ig-frame.is-box .ig-frame-media {
  height: auto;
  aspect-ratio: 1000 / 543;
}
.ig-frame.is-carousel .ig-frame-media:not(.is-filled) {
  border-style: dashed;
  border-color: var(--rule-strong);
}
.ig-frame-media img,
.ig-frame-media iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  border: 0;
  display: block;
}
.ig-frame-empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 10px;
  color: var(--color-graphite);
}
.ig-frame-icon {
  width: 42px; height: 42px;
  border-radius: var(--r-full);
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--rule-strong);
  color: var(--color-ink);
}
.ig-frame.is-reel .ig-frame-icon {
  background: var(--color-ink);
  color: var(--color-on-primary);
  border-color: var(--color-ink);
}
.ig-frame-hint {
  font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-stone);
}
.ig-frame-tag {
  position: absolute; top: 8px; right: 8px;
  width: 24px; height: 24px;
  border-radius: var(--r-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(3,3,3,0.55);
  color: var(--color-on-primary);
}
.ig-frame-label {
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-stone);
  text-align: center;
  max-width: 100%;
}

/* ---------- Section 3 · Full toolstack ---------- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-left: 1px solid var(--rule);
  border-top: 1px solid var(--rule);
}
.stack-cell {
  aspect-ratio: 1 / 1;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 20px;
}
.stack-ph {
  width: 56px; height: 56px;
  border-radius: var(--r-sm);
  border: 1px dashed var(--rule-strong);
  background: var(--color-canvas-warm);
  transition: transform 240ms ease, opacity 240ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.stack-ph.has-img {
  border: none;
  background: transparent;
  border-radius: var(--r-md);
}
.stack-ph.has-img img { width: 100%; height: 100%; object-fit: contain; }
.stack-name {
  position: absolute;
  bottom: 16px; left: 0; right: 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-ink);
  letter-spacing: -0.01em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 200ms ease, transform 200ms ease;
  pointer-events: none;
  padding: 0 8px;
}
.stack-cell:hover .stack-ph { transform: translateY(-8px); opacity: 0.5; }
.stack-cell:hover .stack-name { opacity: 1; transform: none; }

/* ---------- Responsive / mobile simplification ---------- */
@media (max-width: 900px) {
  .skill-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .skill-card.open { grid-column: span 2; }
  .stack-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  .skill-panel-gallery { flex-direction: column; gap: 24px; }
  .ig-caption { max-width: 640px; }
}
@media (max-width: 640px) {
  .cert-grid { grid-template-columns: 1fr; }
  .cert-chip { grid-template-columns: 52px minmax(0, 1fr) auto; gap: 16px; padding: 16px 18px; }
  .cert-badge-scene { width: 52px; height: 52px; }
  .skill-grid { grid-template-columns: 1fr; }
  .skill-card.open { grid-column: span 1; }
  .skill-panel-inner { grid-template-columns: 1fr; }
  .skill-panel-gallery { flex-direction: column; gap: 24px; }
  .ig-strip { gap: 12px; }
  .ig-strip.is-boxes { grid-template-columns: 1fr; }
  .ig-frame:not(.is-box) .ig-frame-media { height: 240px; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  /* phones: gentler, slower sway */
  .cert-badge-tilt { animation-duration: 6s; }
  .stack-name { opacity: 1; transform: none; } /* names always visible, no hover on touch */
}

@media (prefers-reduced-motion: reduce) {
  .cert-badge-tilt,
  .skill-logo { animation: none !important; }
  .cert-badge-scene { transition: none !important; }
  .skill-panel { transition: none !important; }
}