/* Major UI upgrade on the Instagram-inspired base.
   Revert: restore index.pre-upgrade.html, css/style.pre-upgrade.css, js/script.pre-upgrade.js
   and remove this file + js/enhance.js from index.html. */
:root {
  --surface: color-mix(in srgb, var(--bg-elev) 82%, transparent);
  --glow: color-mix(in srgb, var(--accent) 28%, transparent);
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow-lift: 0 18px 40px rgba(0, 0, 0, 0.12);
  --transition: 0.35s var(--ease);
}

html {
  transition: background-color 0.45s var(--ease), color 0.45s var(--ease);
}

html.is-theming,
html.is-theming body,
html.is-theming .site-nav,
html.is-theming .feed,
html.is-theming .closer,
html.is-theming .site-footer,
html.is-theming .btn,
html.is-theming .avatar,
html.is-theming .hl-core,
html.is-theming .modal,
html.is-theming .message-dialog {
  transition:
    background-color 0.45s var(--ease),
    color 0.45s var(--ease),
    border-color 0.45s var(--ease),
    box-shadow 0.45s var(--ease);
}

body {
  background:
    radial-gradient(900px 420px at calc(var(--mx, 50) * 1%) calc(var(--my, 12) * 1%), color-mix(in srgb, var(--accent) 10%, transparent), transparent 58%),
    var(--bg);
  transition: background-color 0.45s var(--ease), color 0.45s var(--ease);
}

.fx-grid,
.fx-glow {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
}

.fx-grid {
  background-image:
    linear-gradient(color-mix(in srgb, var(--text) 5%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--text) 5%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 75%);
  opacity: 0.45;
}

.fx-glow {
  background: radial-gradient(520px 240px at 80% 8%, color-mix(in srgb, var(--gold) 16%, transparent), transparent 70%);
}

.site-nav,
.profile,
.feed,
.closer,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-nav {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.brand-name {
  letter-spacing: -0.03em;
}

.avatar-ring {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition);
}

.profile-avatar-wrap:hover .avatar-ring,
.profile-avatar-wrap:focus-within .avatar-ring {
  filter: drop-shadow(0 16px 28px var(--glow));
}

.profile-avatar-wrap:hover .avatar,
.profile-avatar-wrap:focus-within .avatar {
  transform: scale(1.03);
}

.avatar {
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease);
}

.stats button {
  padding: 10px 12px 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.stats button:hover:not(.is-static),
.stats button:focus-visible {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
  transform: translateY(-2px);
}

.stat-value {
  font-variant-numeric: tabular-nums;
}

.btn-follow .follow-check {
  display: inline-block;
  max-width: 0;
  opacity: 0;
  overflow: hidden;
  margin-left: 0;
  transition: max-width var(--transition), opacity var(--transition), margin var(--transition);
}

.btn-follow:hover .follow-check,
.btn-follow:focus-visible .follow-check {
  max-width: 1.2em;
  opacity: 1;
  margin-left: 0.35rem;
}

.highlights button {
  transition: transform var(--transition);
}

.highlights button:hover {
  transform: translateY(-4px);
}

.highlights button:hover .hl-ring,
.highlights button:focus-visible .hl-ring {
  filter: drop-shadow(0 8px 16px var(--glow));
}

.project-grid {
  perspective: 900px;
}

.project-card {
  transform-style: preserve-3d;
  border-radius: 4px;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), opacity 0.28s var(--ease);
}

.project-card.is-dim {
  opacity: 0.35;
}

.project-card img,
.project-art {
  transition: transform 0.55s var(--ease);
}

.project-card:hover,
.project-card:focus-visible {
  z-index: 2;
  box-shadow: var(--shadow-lift);
}

.project-card:hover img,
.project-card:focus-visible img {
  transform: scale(1.08);
}

.project-overlay {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
  gap: 10px;
  padding: 14px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.28) 0%, transparent 32%, rgba(0, 0, 0, 0.78) 100%);
  opacity: 0;
  transition: opacity 0.28s var(--ease);
}

.project-overlay-copy {
  display: grid;
  gap: 4px;
  text-align: left;
}

.overlay-title {
  font-weight: 750;
  font-size: 0.95rem;
  letter-spacing: -0.03em;
}

.overlay-tech {
  font-size: 0.72rem;
  opacity: 0.85;
}

.overlay-view {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.overlay-stats {
  display: flex;
  gap: 16px;
  align-self: flex-end;
}

.overlay-stat {
  font-size: 0.82rem;
}

.job {
  border-radius: var(--radius);
  padding: 16px 16px 18px;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.job:hover,
.job:focus-within {
  background: var(--bg-muted);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.job:hover .company,
.job:focus-within .company {
  color: var(--gold);
}

.skill-card {
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  transform: translateY(-2px);
}

#skill-groups .tag {
  cursor: pointer;
  transition: color var(--transition), background var(--transition), transform var(--transition), border-color var(--transition);
}

#skill-groups .tag:hover,
#skill-groups .tag.is-hot {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateX(3px);
}

.about-kicker {
  margin: 0 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.95;
}

.about-pills {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.closer {
  width: min(var(--page), 100%);
  max-width: var(--page);
  margin: 28px auto 0;
  padding: 56px max(var(--gutter), env(safe-area-inset-right)) 36px max(var(--gutter), env(safe-area-inset-left));
  border-top: 1px solid var(--border);
  background:
    radial-gradient(520px 180px at 12% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
}

.closer .section-kicker {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.closer h2 {
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 5rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.closer-copy {
  max-width: 28rem;
  color: var(--text-soft);
  font-size: 1.08rem;
}

.closer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.message-dialog {
  border-radius: var(--radius-lg);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-lift);
}

.message-option {
  position: relative;
  padding-right: 36px;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.message-option::after {
  content: "→";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.4;
  font-size: 0.95rem;
}

.message-option:hover {
  transform: translateX(4px);
}

.message-option:hover::after {
  opacity: 1;
}

.message-options > * {
  animation: option-in 0.42s var(--ease) both;
}

.message-options > *:nth-child(2) { animation-delay: 0.06s; }
.message-options > *:nth-child(3) { animation-delay: 0.12s; }

@keyframes option-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.modal {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.ig-gallery {
  transition: transform 0.42s var(--ease);
}

.ig-gallery img {
  transition: transform 0.35s var(--ease);
  will-change: transform;
}

.ig-post-media {
  perspective: 800px;
}

.ig-menu {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.ig-menu-item {
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.toast {
  border-radius: 999px;
  box-shadow: var(--shadow-lift);
}

.reveal-up {
  animation: panel-in 0.7s var(--ease) both;
}

@media (hover: none), (pointer: coarse) {
  .project-card,
  .avatar-ring {
    transform: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fx-grid,
  .fx-glow {
    display: none !important;
  }
  .project-card,
  .job,
  .avatar-ring,
  .message-options > * {
    transform: none !important;
    animation: none !important;
  }
}