/* ============================================================
   Hide bento grid (old) but keep tickers/utilities
   ============================================================ */

.bento-grid { display: none; }
.cmd-k-btn { display: inline-flex; }

/* Mobile */
@media (max-width: 880px) {
  .section { padding: 5rem 0 4rem; }
  #contact { padding: 3rem 0 2.5rem; }
  .section-title { margin-bottom: 3rem; }
  .hero-meta-row { gap: 2rem; }
  .accordion-body { padding-left: 0; }
}

/* ============================================================
   Lane A: Section reveals, deep stagger, nav counter
   ============================================================ */

.section-title .h2-main {
  display: inline-block;
  clip-path: inset(0 0 100% 0);
  transform: translateY(12px);
  transition:
    clip-path 0.8s var(--ease-out),
    transform 0.8s var(--ease-out);
  will-change: clip-path, transform;
}

.section-title h2 em {
  display: inline-block;
  opacity: 0;
  transform: translateX(18px);
  transition:
    opacity 0.7s var(--ease-out) 0.2s,
    transform 0.7s var(--ease-out) 0.2s;
  will-change: opacity, transform;
}

.section-title.is-in p {
  opacity: 1;
  transform: translateY(0);
}

.section-title:not(.is-in) p {
  opacity: 0;
  transform: translateY(14px);
}

.section-title p {
  transition:
    opacity 0.6s var(--ease-out) 0.35s,
    transform 0.6s var(--ease-out) 0.35s;
  will-change: opacity, transform;
}

.section-title.is-in .h2-main {
  clip-path: inset(0 0 0% 0);
  transform: translateY(0);
}

.section-title.is-in h2 em {
  opacity: 1;
  transform: translateX(0);
}

.section-title[data-scroll].is-in {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .section-title .h2-main,
  .section-title h2 em,
  .section-title p {
    clip-path: none;
    transform: none;
    opacity: 1;
    transition: none;
  }
}

[data-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.55s var(--ease-out) var(--stagger-delay, 0s),
    transform 0.55s var(--ease-out) var(--stagger-delay, 0s);
  will-change: opacity, transform;
}

[data-stagger].is-in > * {
  opacity: 1;
  transform: translateY(0);
}

[data-scroll].is-in [data-stagger] > * {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-stagger] > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@keyframes nav-counter-pulse {
  0%   { color: var(--muted); transform: scale(1); }
  40%  { color: var(--signal); transform: scale(1.18); }
  100% { color: var(--signal); transform: scale(1); }
}

@keyframes nav-link-snap {
  0%   { transform: translateX(0); }
  45%  { transform: translateX(2px); }
  100% { transform: translateX(0); }
}

.nav-links a.active {
  animation: nav-link-snap 0.4s var(--ease-spring) forwards;
}

.nav-links a.active::before {
  animation: nav-counter-pulse 0.5s var(--ease-out) forwards;
}

@media (prefers-reduced-motion: reduce) {
  .nav-links a.active,
  .nav-links a.active::before {
    animation: none;
  }
}

/* ============================================================
   Lane B: Microinteractions
   ============================================================ */

.accordion-body {
  overflow: hidden;
}

.accordion-chevron.lb-glow {
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--signal) 14%, transparent),
              0 2px 6px color-mix(in oklab, var(--signal) 18%, transparent);
}

.filter-channel-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--signal);
  text-align: right;
  pointer-events: none;
  user-select: none;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out);
  margin-bottom: 0;
  min-height: 0;
}

.filter-channel-label::before {
  content: "▎ ";
  opacity: 0.7;
}

.filter-channel-label.lb-visible {
  opacity: 1;
  transform: translateY(0);
  margin-bottom: 0.75rem;
  min-height: 1.4em;
}

.project-card a:not(.btn) {
  position: relative;
  display: inline-block;
}

.project-card a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease-out);
}

.project-card a:not(.btn):hover::after {
  transform: scaleX(1);
}

.project-card a:not(.btn) .arrow,
.project-card a:not(.btn) > svg {
  display: inline-block;
  transition: transform 0.4s var(--ease-out);
}

.project-card a:not(.btn):hover .arrow,
.project-card a:not(.btn):hover > svg {
  transform: translateX(4px);
}

.profile-pills span,
.tags span,
.pill-grid span,
.publication-profiles a {
  transition: border-color 0.25s var(--ease-out),
              color 0.25s var(--ease-out),
              transform 0.25s var(--ease-out),
              background 0.25s var(--ease-out);
}

.profile-pills span:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: transparent;
  transform: translateY(-2px);
}

.tags span:hover {
  color: var(--signal);
}

.pill-grid span:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: transparent;
  transform: translateY(-2px);
}

.publication-profiles a {
  position: relative;
}

.publication-profiles a:hover {
  border-color: var(--signal);
  color: var(--signal);
  transform: translateY(-2px);
}

.publication-profiles a::after {
  content: "→";
  display: inline-block;
  transition: transform 0.25s var(--ease-out);
  margin-left: 0.3em;
}

.publication-profiles a:hover::after {
  transform: translateX(4px);
}

@media (prefers-reduced-motion: reduce) {
  .filter-channel-label {
    transition: opacity 0.01ms;
    transform: none;
  }

  .project-card a:not(.btn)::after,
  .project-card a:not(.btn) .arrow,
  .project-card a:not(.btn) > svg {
    transition: transform 0.01ms;
  }

  .profile-pills span,
  .tags span,
  .pill-grid span,
  .publication-profiles a {
    transition: border-color 0.01ms, color 0.01ms, background 0.01ms;
    transform: none !important;
  }

  .publication-profiles a:hover {
    transform: none;
  }

  .accordion-chevron.lb-glow {
    box-shadow: none;
  }
}

/* ============================================================
   Lane C: Atmospherics
   ============================================================ */

@keyframes heartbeat {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.7; transform: scale(0.9); }
}

.brand::before {
  animation: heartbeat 2.4s ease-in-out infinite;
}

.status-dot {
  animation: heartbeat 2.4s ease-in-out infinite,
             status-pulse 2.4s ease-in-out infinite;
}

.hero-eyebrow-row .pulse {
  animation: heartbeat 2.4s ease-in-out infinite;
}

.live-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  flex-shrink: 0;
  animation: heartbeat 2.4s ease-in-out infinite;
}

.now-reading {
  position: fixed;
  left: 1.5rem;
  bottom: 1.5rem;
  z-index: 39;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
  white-space: nowrap;
  transform: translateY(8px);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(8px) saturate(140%);
}

.now-reading.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.now-reading__text {
  display: inline-block;
  transition: opacity 0.15s linear;
}

.now-reading__text.is-fading {
  opacity: 0;
}

.hero-stage .shapes {
  --lc-blur-add: 0px;
  --lc-fade: 1;
}

.shape-1 {
  translate: var(--lc-sx1, 0px) var(--lc-sy1, 0px);
  filter: blur(calc(60px + var(--lc-blur-add, 0px)));
  opacity: calc(0.7 * var(--lc-fade, 1));
}

.shape-2 {
  translate: var(--lc-sx2, 0px) var(--lc-sy2, 0px);
  filter: blur(calc(70px + var(--lc-blur-add, 0px)));
  opacity: calc(0.45 * var(--lc-fade, 1));
}

.shape-3 {
  translate: var(--lc-sx3, 0px) var(--lc-sy3, 0px);
  filter: blur(calc(80px + var(--lc-blur-add, 0px)));
  opacity: calc(0.25 * var(--lc-fade, 1));
}

body[data-theme="dark"] .shape-1 { opacity: calc(0.55 * var(--lc-fade, 1)); }
body[data-theme="dark"] .shape-2 { opacity: calc(0.30 * var(--lc-fade, 1)); }
body[data-theme="dark"] .shape-3 { opacity: calc(0.40 * var(--lc-fade, 1)); }

.hero-name {
  transform-style: preserve-3d;
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .brand::before,
  .status-dot,
  .hero-eyebrow-row .pulse,
  .live-pulse {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .now-reading__text {
    transition: none !important;
  }

  .shape-1,
  .shape-2,
  .shape-3 {
    translate: 0px 0px !important;
    scale: 1 !important;
  }
  .shape-1 { filter: blur(60px) !important; }
  .shape-2 { filter: blur(70px) !important; }
  .shape-3 { filter: blur(80px) !important; }
}

/* ============================================================
   Lane D: Cmd-K discoverability hint
   ============================================================ */

.cmdk-hint {
  position: fixed;
  top: 5rem;
  right: 1.5rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.65rem 0.55rem 0.85rem;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  box-shadow: var(--shadow-1);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.cmdk-hint.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.cmdk-hint__key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--bone-2);
  color: var(--signal);
}

.cmdk-hint__text {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.cmdk-hint__close {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--soft);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  border-radius: 50%;
  transition: color 0.2s linear, background 0.2s linear;
}

.cmdk-hint__close:hover {
  color: var(--ink);
  background: var(--bone-2);
}

@media (max-width: 720px) {
  .cmdk-hint {
    top: auto;
    bottom: 5.5rem;
    right: 1rem;
    left: 1rem;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cmdk-hint {
    transition: opacity 0.01ms;
    transform: none;
  }
}

/* ============================================================
   Lane E: Accordion summary preview (closed-state one-liner)
   ============================================================ */

.exp-preview {
  grid-column: 1 / -1;
  margin: 0.5rem 0 0;
  padding: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.45;
  color: var(--muted);
  font-variation-settings: "opsz" 30, "SOFT" 90;
  max-width: 56rem;
  transition: opacity 0.3s var(--ease-out);
}

.accordion-item[open] .exp-preview {
  display: none;
}

@media (max-width: 880px) {
  .exp-preview {
    grid-column: 1 / -1;
    font-size: 0.95rem;
  }
}

/* ============================================================
   Lane F: Press feedback, touch-hover gate, gradient-shift,
   nav-counter as transition, popover origins, scroll-cue guard
   ============================================================ */

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50%       { background-position: 100% 50%; }
}

.btn:active,
.btn.primary:active,
.btn.outline:active,
.btn.ghost:active,
.filter-btn:active,
.cmd-item:active,
.publication-profiles a:active,
.project-card a:not(.btn):active,
.contact-card .btn:active {
  transform: scale(0.97);
}

.theme-toggle:active,
.nav-toggle:active,
.cmd-k-btn:active,
.to-top:active,
.now-reading:active,
.cmdk-hint__close:active {
  transform: scale(0.94);
}

.btn,
.btn.primary,
.btn.outline,
.btn.ghost,
.filter-btn,
.cmd-item,
.publication-profiles a,
.project-card a:not(.btn),
.contact-card .btn,
.theme-toggle,
.nav-toggle,
.cmd-k-btn,
.to-top,
.now-reading,
.cmdk-hint__close {
  transition-property: transform, background, color, border-color, box-shadow;
  transition-duration: 0.18s, 0.25s, 0.25s, 0.25s, 0.3s;
  transition-timing-function: var(--ease-out);
}

.theme-toggle:active {
  transform: rotate(170deg) scale(0.94);
}

@media (hover: none), (pointer: coarse) {
  .skills-grid .card:hover .skill-icon,
  .education-card:hover,
  .stats .card:hover,
  .pill-grid span:hover,
  .profile-pills span:hover,
  .publication-profiles a:hover,
  .to-top:hover,
  .contact-card .btn:hover,
  .contact-card .btn:hover .arrow,
  .nav-links a:hover::after,
  .btn:hover .arrow,
  .theme-toggle:hover,
  .project-card a:not(.btn):hover::after,
  .project-card a:not(.btn):hover .arrow,
  .stat-link:hover::after,
  .hero-links a:hover::after,
  .cert-card .hero-links a:hover,
  .cert-card .hero-links a:hover::after,
  .projects .hero-links a:hover,
  .projects .hero-links a:hover::after,
  .bento:hover,
  .card:hover {
    transform: none;
    box-shadow: none;
  }

  .btn:hover .arrow {
    transform: none;
  }
}

@keyframes scroll-cue-anim {
  0%, 100% { transform: translateY(-100%); }
  50%       { transform: translateY(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-indicator .line::after,
  .scroll-cue,
  [class*="scroll-cue"] {
    animation: none !important;
  }
}

.cmd-palette-box {
  transform-origin: center top;
}

.now-reading {
  transform-origin: bottom left;
}

.cmdk-hint {
  transform-origin: top right;
}

.cmd-palette.is-instant,
.cmd-palette.is-instant .cmd-palette-box {
  transition-duration: 0ms !important;
  animation-duration: 0ms !important;
}

.nav-links a.active {
  animation: none;
  transform: translateX(0);
  transition: transform 0.4s var(--ease-spring), color 0.25s var(--ease-out);
}

.nav-links a.active::before {
  animation: none;
  color: var(--signal);
  transition: color 0.4s var(--ease-out), transform 0.4s var(--ease-spring);
}