/* ============================================================
   FADJIMAINA.COM: Shared Site Stylesheet
   All pages import this file alongside Tailwind CDN.
   ============================================================ */

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
  --clr-bg:       #0f172a;
  --clr-surface:  #1e293b;
  --clr-border:   rgba(51,65,85,0.5);
  --clr-teal:     #2dd4bf;
  --clr-teal-dim: rgba(45,212,191,0.15);
  --clr-amber:    #fbbf24;
  --clr-text:      #cbd5e1;
  --clr-muted:     #94a3b8;
  --clr-subtle:    #64748b;
  --radius-card:   1rem;
  --radius-panel:  1.25rem;
  --shadow-card:   0 18px 48px rgba(2,7,18,0.32);
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:  cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:     180ms;
  --dur-med:      340ms;
  --dur-slow:     600ms;
}

/* ── Scroll behaviour ────────────────────────────────────── */
html { scroll-behavior: smooth; }

/* Slightly lift muted copy on the dark background for readability. */
.text-slate-500 { color: #94a3b8 !important; }
.text-slate-600 { color: #64748b !important; }

/* ── Scroll progress bar ─────────────────────────────────── */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #2dd4bf, #818cf8, #2dd4bf);
  background-size: 200% 100%;
  z-index: 9999;
  transition: width 80ms linear;
  animation: shimmer 3s linear infinite;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Gradient text ───────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #2dd4bf 60%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-amber {
  background: linear-gradient(135deg, #ffffff 0%, #fbbf24 60%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Reusable atmospheric backgrounds ────────────────────── */
.hero-glow {
  background: radial-gradient(ellipse 80% 60% at 50% 110%, rgba(13,148,136,0.18) 0%, transparent 70%);
}
.dot-grid {
  background-image: radial-gradient(circle, rgba(148,163,184,0.12) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ── Scroll-triggered fade-in ────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.fade-left.visible { opacity: 1; transform: translateX(0); }

.fade-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.fade-right.visible { opacity: 1; transform: translateX(0); }

/* Stagger children of a container */
.stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.stagger.visible > *:nth-child(1)  { opacity:1; transform:none; transition-delay: 0ms; }
.stagger.visible > *:nth-child(2)  { opacity:1; transform:none; transition-delay: 80ms; }
.stagger.visible > *:nth-child(3)  { opacity:1; transform:none; transition-delay: 160ms; }
.stagger.visible > *:nth-child(4)  { opacity:1; transform:none; transition-delay: 240ms; }
.stagger.visible > *:nth-child(5)  { opacity:1; transform:none; transition-delay: 320ms; }
.stagger.visible > *:nth-child(6)  { opacity:1; transform:none; transition-delay: 400ms; }
.stagger.visible > *:nth-child(7)  { opacity:1; transform:none; transition-delay: 480ms; }
.stagger.visible > *:nth-child(8)  { opacity:1; transform:none; transition-delay: 560ms; }
.stagger.visible > *:nth-child(n+9){ opacity:1; transform:none; transition-delay: 640ms; }

/* ── Hero entrance animations ────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge   { animation: slideDown 0.6s var(--ease-out) 0.1s both; }
.hero-name    { animation: fadeUp   0.8s var(--ease-out) 0.3s both; }
.hero-role    { animation: fadeUp   0.8s var(--ease-out) 0.5s both; }
.hero-tagline { animation: fadeUp   0.8s var(--ease-out) 0.65s both; }
.hero-cta     { animation: fadeUp   0.8s var(--ease-out) 0.8s both; }
.hero-scroll  { animation: fadeIn   1s   var(--ease-out) 1.2s both; }

/* ── Parallax hero ───────────────────────────────────────── */
.parallax-bg {
  will-change: transform;
  transition: transform 0ms linear;
}

/* ── Navbar shrink on scroll ─────────────────────────────── */
nav.scrolled {
  padding-top: 0;
  padding-bottom: 0;
  box-shadow: 0 4px 32px rgba(0,0,0,0.35);
  background: rgba(15,23,42,0.97) !important;
  backdrop-filter: blur(20px);
}
nav.scrolled > div > div > a { font-size: 0.95rem; }

/* ── Animated nav link underline ─────────────────────────── */
.nav-link-animated {
  position: relative;
  text-decoration: none;
}
.nav-link-animated::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--clr-teal);
  transition: width var(--dur-med) var(--ease-out);
}
.nav-link-animated:hover::after { width: 100%; }

/* ── Glassmorphism cards ─────────────────────────────────── */
.glass {
  background: rgba(30,41,59,0.6);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid rgba(255,255,255,0.07);
}

/* ── Enhanced card hover ─────────────────────────────────── */
.card-hover {
  transition: border-color var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}
.card-hover:hover {
  border-color: rgba(45,212,191,0.45) !important;
  transform: translateY(-3px);
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(45,212,191,0.12);
}
.card-lift {
  transition: transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
}
.card-lift:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(45,212,191,0.2);
  border-color: rgba(45,212,191,0.35) !important;
}

/* ── Back to top button ──────────────────────────────────── */
#back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(45,212,191,0.15);
  border: 1px solid rgba(45,212,191,0.35);
  color: #2dd4bf;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              background var(--dur-fast);
  z-index: 1000;
  pointer-events: none;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
#back-to-top:hover {
  background: rgba(45,212,191,0.25);
}

/* ── Custom cursor ───────────────────────────────────────── */
#cursor-dot {
  position: fixed;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--clr-teal);
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: transform 60ms linear, opacity 200ms;
  mix-blend-mode: screen;
}
#cursor-ring {
  position: fixed;
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1.5px solid rgba(45,212,191,0.5);
  pointer-events: none;
  z-index: 99998;
  transform: translate(-50%, -50%);
  transition: width 200ms var(--ease-out), height 200ms var(--ease-out),
              left 80ms linear, top 80ms linear, opacity 200ms;
}
@media (hover: none) {
  #cursor-dot, #cursor-ring { display: none; }
}

/* ── Dot-grid texture ────────────────────────────────────── */
.dot-grid-alt {
  background-image: radial-gradient(circle, rgba(148,163,184,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ── Section divider accent ──────────────────────────────── */
.section-label {
  display: flex; align-items: center; gap: 1rem; margin-bottom: 3.5rem;
}
.section-label::before, .section-label::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(51,65,85,0.7), transparent);
}
.section-label span {
  color: var(--clr-teal);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.maina { color: #fff; font-weight: 600; }
.timeline-line { position: relative; }
.timeline-line::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, rgba(45,212,191,0.5), rgba(45,212,191,0.05));
}

/* ── Publication / talk card accent border ───────────────── */
.pub-card {
  border-left: 3px solid transparent;
  transition: border-color var(--dur-med), transform var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}
.pub-card:hover {
  border-left-color: var(--clr-teal);
  transform: translateX(4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.talk-entry,
.media-card,
.blog-card {
  transition: border-color var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}
.talk-entry:hover,
.media-card:hover,
.blog-card:hover {
  border-color: rgba(45,212,191,0.4) !important;
  background-color: rgba(30,41,59,0.82);
  box-shadow: var(--shadow-card);
}
.media-card:hover,
.blog-card:hover {
  transform: translateY(-3px);
}
.talk-entry p.text-white,
.media-card h3,
.pub-card h3 {
  font-size: 0.95rem;
  line-height: 1.45;
}
.talk-entry p:last-child,
.media-card p,
.pub-card p {
  color: var(--clr-muted);
}

.featured-panel {
  border: 1px solid rgba(51,65,85,0.55);
  background:
    linear-gradient(135deg, rgba(15,23,42,0.92), rgba(30,41,59,0.68)),
    rgba(15,23,42,0.9);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
}

/* ── Lightbox ────────────────────────────────────────────── */
#lightbox {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.92);
  display: flex; align-items: center; justify-content: center;
  z-index: 10000;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out);
  backdrop-filter: blur(8px);
}
#lightbox.open,
#lightbox.active {
  opacity: 1; pointer-events: auto;
}
#lightbox-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 92vw;
  max-height: 88vh;
}
#lightbox img {
  max-width: 92vw; max-height: 88vh;
  border-radius: 12px;
  object-fit: contain;
  transition: opacity var(--dur-med);
  box-shadow: 0 32px 80px rgba(0,0,0,0.8);
  display: block;
}
#lightbox img.is-loading {
  opacity: 0.85;
}
#lightbox-spinner {
  position: absolute;
  width: 2rem;
  height: 2rem;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: var(--clr-teal, #2dd4bf);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast);
}
#lightbox-stage:has(img.is-loading) #lightbox-spinner {
  opacity: 1;
}
#lightbox-prev, #lightbox-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: white;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background var(--dur-fast);
}
#lightbox-prev { left: 1.5rem; }
#lightbox-next { right: 1.5rem; }
#lightbox-prev:hover, #lightbox-next:hover { background: rgba(255,255,255,0.18); }
#lightbox-prev:disabled, #lightbox-next:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}
#lightbox-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: white; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background var(--dur-fast);
}
#lightbox-close:hover { background: rgba(255,255,255,0.18); }
#lightbox-caption {
  position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.6); font-size: 0.8rem;
  white-space: nowrap;
}

/* ── Mobile full-screen menu overlay ────────────────────────*/
#mobile-overlay {
  position: fixed; inset: 0;
  background: rgba(15,23,42,0.98);
  backdrop-filter: blur(20px);
  z-index: 40;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 2rem;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out);
}
#mobile-overlay.open { opacity: 1; pointer-events: auto; }
#mobile-overlay a {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2rem; font-weight: 700;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color var(--dur-fast);
}
#mobile-overlay a:hover, #mobile-overlay a.active { color: #2dd4bf; }

/* ── Hamburger icon morphing ─────────────────────────────── */
.hamburger { cursor: pointer; display: flex; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: currentColor; border-radius: 2px;
  transition: transform var(--dur-med) var(--ease-out),
              opacity var(--dur-med),
              width var(--dur-med) var(--ease-out);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Particle canvas ─────────────────────────────────────── */
#particle-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.45;
}

/* ── Homepage research icons ─────────────────────────────── */
.research-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 0.85rem;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #67e8f9;
  background:
    linear-gradient(135deg, rgba(45,212,191,0.14), rgba(14,165,233,0.08)),
    rgba(15,23,42,0.62);
  border: 1px solid rgba(45,212,191,0.2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.research-icon svg {
  width: 1.45rem;
  height: 1.45rem;
}
.earth-orbit-ring {
  transform: rotateX(70deg) scale(1.18);
  animation: orbit-ring 24s linear infinite;
  box-shadow: 0 0 32px rgba(103,232,249,0.08);
}
@keyframes orbit-ring {
  from { transform: rotateX(70deg) scale(1.18) rotateZ(0deg); }
  to   { transform: rotateX(70deg) scale(1.18) rotateZ(360deg); }
}

/* ── Cinematic world visualization ───────────────────────── */
/* Map block: avoid fade-up opacity:0: Safari IO may never mount the canvas */
.world-map-section {
  opacity: 1;
  transform: none;
}
/* Talks photo gallery: same IO issue for deferred mount + lazy images */
#talks-gallery.fade-up {
  opacity: 1;
  transform: none;
}
.world-map-section .world-viz-canvas {
  contain: layout paint style;
}
.world-viz-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 25 / 12;
  min-height: 180px;
  border-radius: 18px;
  border: 1px solid rgba(103,232,249,0.16);
  background: linear-gradient(145deg, #0d3550 0%, #061827 55%, #020712 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.04),
    inset 0 -36px 80px rgba(0,0,0,0.24),
    0 24px 80px rgba(2,7,18,0.45),
    0 0 48px rgba(45,212,191,0.08);
}

.world-viz-globe {
  display: block;
  border-radius: 9999px;
  filter:
    drop-shadow(0 0 22px rgba(103,232,249,0.2))
    drop-shadow(0 18px 42px rgba(0,0,0,0.38));
}

.world-viz-tooltip {
  position: absolute;
  min-width: 128px;
  max-width: min(260px, calc(100vw - 48px));
  padding: 0.65rem 0.8rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(148,241,255,0.18);
  background:
    linear-gradient(135deg, rgba(15,23,42,0.82), rgba(2,7,18,0.74)),
    rgba(15,23,42,0.78);
  color: #e6fbff;
  box-shadow:
    0 18px 46px rgba(0,0,0,0.44),
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 0 26px rgba(45,212,191,0.08);
  pointer-events: none;
  white-space: nowrap;
  z-index: 100;
  opacity: 0;
  transform: translate3d(0, 8px, 0) scale(0.98);
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.world-viz-tooltip.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
}

.world-viz-tooltip__label {
  display: block;
  color: #f8fdff;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.world-viz-tooltip__sub {
  display: block;
  margin-top: 0.22rem;
  color: rgba(186,230,253,0.72);
  font-size: 0.66rem;
  line-height: 1.2;
}

/* ── Filter / search bar ─────────────────────────────────── */
.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  border: 1px solid rgba(51,65,85,0.7);
  font-size: 0.8rem;
  color: #94a3b8;
  cursor: pointer;
  transition: all var(--dur-fast);
  background: transparent;
}
.filter-btn:hover { border-color: rgba(45,212,191,0.4); color: #2dd4bf; }
.filter-btn.active {
  background: rgba(45,212,191,0.15);
  border-color: rgba(45,212,191,0.5);
  color: #2dd4bf;
}

/* ── Search input ────────────────────────────────────────── */
.search-input {
  width: 100%;
  background: rgba(30,41,59,0.6);
  border: 1px solid rgba(51,65,85,0.6);
  border-radius: 0.75rem;
  padding: 0.65rem 1rem 0.65rem 2.75rem;
  color: #e2e8f0;
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.search-input:focus {
  border-color: rgba(45,212,191,0.5);
  box-shadow: 0 0 0 3px rgba(45,212,191,0.1);
}
.search-input::placeholder { color: #475569; }

/* ── Blog cards and articles ─────────────────────────────── */
.blog-img-placeholder {
  background:
    radial-gradient(circle at 20% 20%, rgba(45,212,191,0.18), transparent 34%),
    linear-gradient(135deg, rgba(15,118,110,0.16) 0%, rgba(15,23,42,0.98) 100%);
}
.blog-thumb {
  min-height: 11rem;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}
.blog-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.08), rgba(15,23,42,0.72));
}
.blog-thumb-label {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  z-index: 1;
}
.blog-thumb-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #67e8f9;
  background: rgba(15,23,42,0.78);
  border: 1px solid rgba(45,212,191,0.22);
  backdrop-filter: blur(12px);
}
.blog-thumb-icon svg {
  width: 1.65rem;
  height: 1.65rem;
}
.prose {
  color: #cbd5e1;
  font-size: 1rem;
  line-height: 1.8;
}
.prose p { margin: 1.2rem 0; }
.prose ul,
.prose ol {
  margin: 1.2rem 0;
  padding-left: 1.5rem;
}
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li {
  margin: 0.45rem 0;
  line-height: 1.75;
}
.prose strong { color: #e2e8f0; }
.prose h2 {
  color: #fff;
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.65rem;
  line-height: 1.25;
  margin: 2.4rem 0 1rem;
}
.prose h3 {
  color: #f8fafc;
  font-weight: 700;
  font-size: 1.15rem;
  margin: 2rem 0 0.65rem;
}
.prose a {
  color: var(--clr-teal);
  text-decoration: underline;
  text-decoration-color: rgba(45,212,191,0.35);
  text-underline-offset: 0.2em;
}
.prose blockquote {
  margin: 1.8rem 0;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid rgba(45,212,191,0.55);
  background: rgba(30,41,59,0.44);
  border-radius: 0 1rem 1rem 0;
  color: #e2e8f0;
}
.prose figcaption {
  margin-top: 0.75rem;
  text-align: center;
  color: #64748b;
  font-size: 0.875rem;
  font-style: italic;
}
.hero-banner {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* ── Photo gallery items ─────────────────────────────────── */
.photo-item {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
  cursor: zoom-in;
  break-inside: avoid;
  margin-bottom: 0.75rem;
  width: 100%;
  display: inline-block;
  vertical-align: top;
}
.photo-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
}
.photo-item:hover img {
  transform: scale(1.06);
}
.masonry {
  columns: 2;
  column-gap: 0.75rem;
}
.photo-item .caption {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(2,9,21,0.88) 0%, transparent 52%);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-out);
  display: flex;
  align-items: flex-end;
  padding: 0.8rem;
}
.photo-item:hover .caption { opacity: 1; }

/* Talks page: JSON-driven event gallery */
#talks-gallery-root[data-loading="true"],
#talks-gallery-preview-root[data-loading="true"] {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 4rem;
}
#talks-gallery-preview-root[data-loading="true"]::after {
  content: '';
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid rgba(45, 212, 191, 0.25);
  border-top-color: var(--clr-teal, #2dd4bf);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.talks-gallery-preview-card {
  box-shadow: 0 4px 24px rgba(2, 9, 21, 0.35);
}
.talks-gallery-event {
  scroll-margin-top: 6rem;
}
.talks-gallery-event__photos .gallery-photo {
  scroll-margin-top: 6rem;
}
.talks-gallery-year--featured .talks-gallery-event header {
  scroll-margin-top: 6rem;
}
.talks-gallery-event--highlight {
  outline: 2px solid rgba(45, 212, 191, 0.45);
  outline-offset: 6px;
  border-radius: 1rem;
  transition: outline-color 0.4s ease;
}
#talks-gallery {
  scroll-margin-top: 6rem;
}
.talks-gallery-event + .talks-gallery-event {
  border-top: none;
}
.talk-entry .talk-gallery-jump {
  display: inline-flex;
}

/* Gallery tiles: shimmer placeholder until image paints */
@keyframes gallery-photo-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.gallery-photo {
  background-color: #1e293b;
  min-height: 6rem;
}
.gallery-photo:not(.is-loaded):not(.is-error) {
  background-image: linear-gradient(
    110deg,
    #1e293b 0%,
    #334155 45%,
    #1e293b 90%
  );
  background-size: 200% 100%;
  animation: gallery-photo-shimmer 1.4s ease-in-out infinite;
}
.gallery-photo.is-loaded,
.gallery-photo.is-error {
  animation: none;
  background-image: none;
}
.gallery-photo img {
  opacity: 1;
  min-height: 4rem;
  background: #1e293b;
}
.gallery-photo.is-error::after {
  content: 'Photo unavailable';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #94a3b8;
  padding: 1rem;
  text-align: center;
}
/* Photos masonry: plain tiles (no gallery-photo shimmer / caption overlay) */
#photos-gallery-root.masonry {
  columns: 2;
  column-gap: 0.75rem;
}
#photos-gallery-root .photos-masonry-item {
  width: 100%;
  display: inline-block;
  vertical-align: top;
  margin-bottom: 0.75rem;
  overflow: hidden;
  background-color: #1e293b;
  -webkit-column-break-inside: avoid;
  column-break-inside: avoid;
  break-inside: avoid;
}
#photos-gallery-root .photos-masonry-item.is-ready {
  background-color: transparent;
}
#photos-gallery-root .photos-masonry-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  min-height: 4rem;
  position: relative;
  z-index: 1;
  background: transparent;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}
#photos-gallery-root .photos-masonry-item.is-broken::after {
  content: 'Photo unavailable';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #94a3b8;
  padding: 1rem;
  text-align: center;
  z-index: 2;
}
#photos-gallery-root[data-loading="true"] {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 12rem;
}
#photos-gallery-root[data-loading="true"]::after {
  content: '';
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid rgba(45, 212, 191, 0.25);
  border-top-color: var(--clr-teal, #2dd4bf);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@media (min-width: 768px) {
  .masonry,
  #photos-gallery-root.masonry { columns: 3; }
}
@media (min-width: 1280px) {
  .masonry,
  #photos-gallery-root.masonry { columns: 4; }
}

/* ── Spark Kimiyya scoped sub-brand ──────────────────────── */
.theme-spark-kimiyya .card-hover:hover {
  border-color: rgba(251,191,36,0.5) !important;
  box-shadow: var(--shadow-card), 0 0 34px rgba(251,191,36,0.08);
}
.theme-spark-kimiyya .card-hover-teal:hover {
  border-color: rgba(45,212,191,0.45) !important;
  box-shadow: var(--shadow-card), 0 0 24px rgba(45,212,191,0.08);
}
.cohort-body { max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease-out); }
.cohort-body.open { max-height: 9999px; }
.cohort-chevron { transition: transform var(--dur-med) var(--ease-out); }
.cohort-chevron.rotated { transform: rotate(180deg); }
.name-pill { transition: background var(--dur-fast), color var(--dur-fast); }
.name-pill:hover { background: rgba(251,191,36,0.12); color: var(--clr-amber); }
.quote-card { transition: border-color var(--dur-med), transform var(--dur-med) var(--ease-out); }
.quote-card:hover { border-color: rgba(251,191,36,0.4); transform: translateY(-2px); }
.sk-glow { background: radial-gradient(ellipse 60% 40% at 60% 50%, rgba(251,191,36,0.12) 0%, transparent 70%); }
.sk-masonry {
  columns: 1;
  column-gap: 1rem;
}
.sk-masonry .photo-item {
  break-inside: avoid;
  margin-bottom: 1rem;
}
@media (min-width: 640px) {
  .sk-masonry { columns: 2; }
}
@media (min-width: 1024px) {
  .sk-masonry { columns: 3; }
}

/* ── Reduced motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up, .fade-left, .fade-right, .stagger > * {
    opacity: 1 !important; transform: none !important;
  }
  #cursor-dot, #cursor-ring, #particle-canvas {
    display: none !important;
  }
  .earth-orbit-ring {
    animation: none !important;
    transform: rotateX(70deg) scale(1.18) !important;
  }
}