/* UI polish layer: same components and copy, refined look. Brand palette: TED red, black, white. */
:root {
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --glass: #ffffff08;
  --glass-line: #ffffff1f;
  --red-glow: #e62b1e40;
}
::selection {
  background: var(--red);
  color: #fff;
}
html {
  scrollbar-color: #3a3a3d var(--ink);
  scrollbar-width: thin;
}
body {
  background:
    radial-gradient(1200px 600px at 85% -10%, #e62b1e14, transparent 60%),
    radial-gradient(900px 500px at -10% 40%, #ffffff08, transparent 60%),
    var(--ink);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
:focus-visible {
  outline: 2px solid var(--red-text);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Header */
.site-header {
  background: #08090bcc;
  backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--glass-line);
  box-shadow: 0 10px 40px #00000066;
}
.site-nav a:not(.nav-cta) {
  position: relative;
  transition: color 0.25s;
}
.site-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.site-nav a:not(.nav-cta):hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}
.nav-cta {
  border-radius: 999px;
  box-shadow: 0 6px 24px var(--red-glow);
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px #e62b1e73;
}

/* Buttons */
.button {
  border-radius: 999px;
  padding-inline: 28px;
  box-shadow: 0 8px 28px var(--red-glow);
}
.button:hover {
  box-shadow: 0 14px 38px #e62b1e66;
}
.button-outline {
  box-shadow: none;
  background: var(--glass);
}
.button-outline:hover {
  background: #ffffff14;
  border-color: #ffffff80;
  box-shadow: none;
}
.round-button {
  transition:
    transform 0.3s var(--ease),
    background 0.3s,
    border-color 0.3s;
}
.round-button:hover {
  transform: rotate(45deg) scale(1.08);
}
.text-link {
  background-image: linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-size: 0 1px;
  background-position: 0 100%;
  transition: background-size 0.4s var(--ease);
}
.text-link:hover {
  background-size: 100% 1px;
}

/* Typography */
h1,
h2 {
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.eyebrow {
  letter-spacing: 0.22em;
}
.lead {
  text-wrap: pretty;
}

/* Section rhythm */
.section {
  position: relative;
}
.section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(100% - var(--gutter) * 2, 1400px);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--glass-line), transparent);
  pointer-events: none;
}
.signal-strip {
  background: linear-gradient(90deg, #e62b1e14, transparent 40%, #e62b1e14);
}

/* Cards */
.spotlight-card,
.mind-card,
.registration-panel,
.partner-banner,
.contact-people article,
.event-details-card,
.climax-hud-card {
  border-radius: 20px;
  border-color: var(--glass-line);
  box-shadow:
    0 1px 0 #ffffff14 inset,
    0 24px 60px -24px #000000cc;
}
.event-details-card {
  background:
    radial-gradient(600px 240px at 90% 0%, #e62b1e26, transparent 70%),
    linear-gradient(135deg, #1a0e0c, #0e0f11 65%);
}
.contact-people article {
  padding: 26px 28px;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  transition:
    transform 0.35s var(--ease),
    border-color 0.35s;
}
.contact-people article:hover {
  transform: translateY(-4px);
  border-color: #e62b1e80;
}
.info-pill {
  background: linear-gradient(180deg, #ffffff12, #ffffff05);
  border-color: var(--glass-line);
  backdrop-filter: blur(6px);
  transition:
    transform 0.3s var(--ease),
    border-color 0.3s;
}
.info-pill:hover {
  transform: translateY(-3px);
  border-color: #e62b1e80;
}
.climax-hud-card {
  background: linear-gradient(180deg, #ffffff10, #ffffff04);
  backdrop-filter: blur(14px);
}
.climax-hud-val {
  text-shadow: 0 0 30px #e62b1e66;
}

/* Imagery */
.voice-card,
.team-card > img,
.talk-card img,
.community-photo,
.about-photo,
.sponsor-grid figure,
.archive-person img,
.legacy-archive .speaker_img img {
  border-radius: 16px;
}
.voice-card {
  box-shadow: 0 24px 60px -28px #000;
  transition:
    transform 0.5s var(--ease),
    border-color 0.4s,
    box-shadow 0.5s;
}
.voice-card:hover {
  transform: translateY(-6px);
  border-color: #e62b1e99;
  box-shadow: 0 34px 70px -26px #e62b1e55;
}
.team-card > img,
.archive-person img,
.legacy-archive .speaker_img img,
.talk-card img {
  transition:
    opacity 0.4s,
    transform 0.6s var(--ease),
    box-shadow 0.5s;
}
.team-card:hover > img,
.archive-person:hover img,
.talk-card:hover img {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px -22px #e62b1e55;
}
.team-card h2 {
  transition: color 0.3s;
}
.team-card:hover h2 {
  color: var(--red-text);
}
.about-photo {
  box-shadow: 0 30px 70px -30px #000;
}
.sponsor-grid figure {
  transition: transform 0.35s var(--ease);
}
.sponsor-grid figure:hover {
  transform: translateY(-4px);
}

/* Editions rail, FAQ, forms, dialogs */
.edition-card {
  border-radius: 16px;
  transition:
    transform 0.4s var(--ease),
    border-color 0.3s,
    background 0.3s;
}
.edition-card:hover {
  transform: translateY(-5px);
  border-color: #e62b1e99;
  background: #e62b1e12;
}
.faq details {
  border-radius: 14px;
  transition: background 0.3s;
}
.faq details[open],
.faq details:hover {
  background: var(--glass);
}
input,
select,
textarea {
  border-radius: 12px;
  transition:
    border-color 0.25s,
    box-shadow 0.25s;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px #e62b1e33;
  outline: none;
}
dialog {
  border-radius: 20px;
  box-shadow: 0 40px 100px #000;
}
dialog::backdrop {
  background: #000000b3;
  backdrop-filter: blur(6px);
}

/* Hero and closing */
.hero-art img {
  filter: saturate(1.08) contrast(1.04);
}
.final-signal h2 {
  text-shadow: 0 0 80px #e62b1e40;
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, transparent, #0c0d0f 30%);
  border-top: 1px solid var(--glass-line);
}
.site-footer a {
  transition:
    color 0.25s,
    transform 0.25s;
}
.site-footer nav a:hover {
  color: var(--red-text);
  transform: translateX(4px);
}

/* Mind story visuals */
.mind-visual {
  border-radius: 24px;
  box-shadow: 0 40px 90px -40px #e62b1e66;
  border: 1px solid var(--glass-line);
}

/* Past speakers carousel */
.voices-carousel {
  position: relative;
}
.home-speakers .voices-grid {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
  padding: 14px 4px 22px;
  margin: -14px -4px 0;
}
.home-speakers .voices-grid::-webkit-scrollbar {
  display: none;
}
.home-speakers .voice-card {
  flex: 0 0 calc((100% - 40px) / 3);
  scroll-snap-align: start;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  z-index: 5;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--glass-line);
  background: #08090bd9;
  backdrop-filter: blur(10px);
  color: var(--paper);
  font-size: 20px;
  cursor: pointer;
  transform: translateY(-50%);
  transition:
    background 0.25s,
    border-color 0.25s,
    transform 0.25s var(--ease);
}
.carousel-arrow:hover {
  background: var(--red);
  border-color: var(--red);
  transform: translateY(-50%) scale(1.08);
}
.carousel-prev {
  left: -14px;
}
.carousel-next {
  right: -14px;
}
@media (max-width: 900px) {
  .home-speakers .voice-card {
    flex-basis: min(43vw, 310px);
  }
  .carousel-prev {
    left: 4px;
  }
  .carousel-next {
    right: 4px;
  }
}
@media (max-width: 600px) {
  .home-speakers .voice-card {
    flex-basis: min(78vw, 310px);
  }
  .carousel-arrow {
    width: 44px;
    height: 44px;
  }
}

/* Myth of Busyness and Lighthouse: let the artwork fill the card instead of floating in black */
.mind-visual-myth .mind-video,
.mind-visual-paradox .mind-video {
  object-fit: cover;
  object-position: 50% 50%;
  transform: scale(1.1);
  transform-origin: 50% 50%;
}

/* Inner-page headings: smaller than the home hero */
body:not(:has(.hero)) h1 {
  font-size: clamp(38px, 4.4vw, 68px);
}
.mind-visual-paradox .mind-video {
  object-position: 12% 50%;
  transform-origin: 22% 50%;
  transform: scale(1.25);
}

/* Home ambient dots: sit behind all content */
.ambient-dots {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Salon logo: transparent artwork sits cleanly on the dark page */
.salon-logo {
  width: 100%;
  height: auto;
}

/* What is TEDx: the joined hands breathe, with ripples spreading from the connection */
.tedx-intro-art {
  position: relative;
  isolation: isolate;
}
.tedx-intro-art::before,
.tedx-intro-art::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(80%, 270px);
  aspect-ratio: 1;
  border: 1px solid #ff655866;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.7);
  opacity: 0;
  z-index: -1;
  animation: hands-ripple 5s ease-out infinite;
}
.tedx-intro-art::after {
  animation-delay: 2.5s;
}
.tedx-intro-art img {
  animation:
    hands-float 6s ease-in-out infinite,
    hands-glow 3s ease-in-out infinite;
  transition: transform 0.5s var(--ease);
}
.tedx-intro-art:hover img {
  animation-play-state: paused;
  transform: scale(1.06) rotate(-2deg);
}
@keyframes hands-float {
  0%,
  100% {
    translate: 0 0;
    rotate: -1.5deg;
  }
  50% {
    translate: 0 -12px;
    rotate: 1.5deg;
  }
}
@keyframes hands-glow {
  0%,
  100% {
    filter: drop-shadow(0 0 6px #e62b1e33);
  }
  50% {
    filter: drop-shadow(0 0 26px #e62b1e99);
  }
}
@keyframes hands-ripple {
  0% {
    transform: translate(-50%, -50%) scale(0.7);
    opacity: 0.7;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.7);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .tedx-intro-art::before,
  .tedx-intro-art::after,
  .tedx-intro-art img {
    animation: none;
  }
}

/* Small screens: never let long words or decorative layers cause sideways scroll */
html,
body {
  overflow-x: clip;
}
h1,
h2,
h3 {
  overflow-wrap: break-word;
}
.event-details-copy h2 {
  font-size: clamp(26px, 8vw, 52px);
}
@media (max-width: 480px) {
  body:not(:has(.hero)) h1 {
    font-size: clamp(30px, 9vw, 38px);
  }
  .info-pill dd {
    font-size: 17px;
  }
}