/* Teal poster reference theme */
:root {
  --ku-green: #0a7f7a;
  --ku-green-deep: #075957;
  --ku-green-soft: #d7efed;
  --pulinet-purple: #7b3d92;
  --header-background: #065653;
  --header-title: #fbf8f0;
  --header-accent-purple: #7b3d92;
  --mint-soft: #bfe1df;
  --mint-light: #e9f6f5;
  --lavender-soft: #d9eeec;
  --leaf: #13a39b;
  --gold: #d5dc2b;
  --ink: #153f3d;
  --muted: #4d716e;
  --paper: #f5fbfa;
  --white: #ffffff;
  --line: rgba(7, 89, 87, 0.16);
  --shadow: 0 20px 54px rgba(7, 89, 87, 0.14);
  --radius: 10px;
  --font-thai: "Prompt", sans-serif;
  --font-display: "Prompt", sans-serif;
}

html {
  overflow-x: clip;
  background: var(--paper);
}

body {
  color: var(--ink);
  background:
    linear-gradient(180deg, var(--paper), #ffffff 48%, #edf8f7 100%);
}

body::before {
  opacity: 0.62;
  background:
    radial-gradient(circle at 96% 12%, rgba(19, 163, 155, 0.13), transparent 26rem),
    radial-gradient(circle at 0 67%, rgba(10, 127, 122, 0.08), transparent 30rem);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link:focus {
  color: var(--ink);
  background: var(--gold);
}

.site-header,
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: rgba(7, 89, 87, 0.14);
}

.site-header.is-scrolled {
  box-shadow: 0 14px 38px rgba(5, 63, 61, 0.12);
}

.site-header .pulinet-mark img {
  filter: none;
}

.site-header .ku-logo-frame {
  background: var(--white);
  border: 1px solid rgba(7, 89, 87, 0.14);
  box-shadow: 0 8px 20px rgba(5, 63, 61, 0.1);
}

.site-header .ku-logo-frame img {
  filter: none;
}

.site-header .brand-divider {
  background: rgba(7, 89, 87, 0.28);
}

.brand .brand-copy strong {
  color: var(--ku-green-deep);
  text-shadow: none;
}

.brand .brand-copy .brand-year {
  color: var(--pulinet-purple);
}

.site-header .brand small {
  color: var(--muted);
  opacity: 1;
}

.header-event-pill {
  color: var(--ink);
  background: rgba(213, 220, 43, 0.95);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 24px rgba(5, 63, 61, 0.16);
}

.header-event-pill span {
  background: var(--ku-green-deep);
  box-shadow: none;
}

.header-action {
  color: var(--ku-green-deep);
  border-color: rgba(7, 89, 87, 0.22);
  background: var(--white);
}

.header-action:hover {
  background: var(--ku-green-soft);
}

.header-action.primary {
  color: var(--white);
  background: var(--pulinet-purple);
  border-color: transparent;
}

.nav-row {
  border-top-color: rgba(7, 89, 87, 0.1);
}

.primary-nav > a,
.nav-group > button {
  color: var(--ink);
}

.primary-nav > a:hover,
.nav-group > button:hover,
.nav-group > button[aria-expanded="true"] {
  color: var(--pulinet-purple);
  background: rgba(123, 61, 146, 0.08);
}

.submenu {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(7, 89, 87, 0.14);
  box-shadow: var(--shadow);
}

.submenu a {
  color: var(--ink);
}

.submenu a:hover,
.submenu a:focus {
  color: var(--ku-green-deep);
  background: var(--ku-green-soft);
}

.hero.ai-hero {
  color: var(--white);
  background: linear-gradient(180deg, #086f6c 0%, #3b9c98 36%, #acd8d5 71%, #eef9f8 100%);
}

.ai-hero .hero-grid {
  opacity: 0.24;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.15) 1px, transparent 1px);
  mask-image: linear-gradient(180deg, #000 8%, rgba(0, 0, 0, 0.36) 58%, transparent 88%);
}

.floating-dots {
  opacity: 0.34;
}

.floating-dots span {
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.48);
}

.aurora-one {
  background: rgba(213, 220, 43, 0.16);
}

.aurora-two {
  background: rgba(255, 255, 255, 0.2);
}

.hero-kicker,
.hero-copy h1.conference-title,
.conference-title span:last-child {
  color: var(--white);
}

.hero-kicker {
  text-shadow: 0 2px 18px rgba(5, 63, 61, 0.25);
}

.hero-kicker span {
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(213, 220, 43, 0.2);
}

.hero-copy h1.conference-title {
  max-width: 760px;
  font-size: clamp(2.5rem, 4.15vw, 4.75rem);
  line-height: 1.12;
  letter-spacing: 0;
  text-shadow: 0 4px 24px rgba(5, 63, 61, 0.2);
}

.hero-theme {
  margin-top: 30px;
  color: var(--ink);
}

.hero-theme span {
  width: fit-content;
  max-width: 100%;
  display: inline-block;
  padding: 7px 14px 8px;
  color: var(--ink);
  background: linear-gradient(90deg, rgba(213, 220, 43, 0.97), var(--gold) 72%, rgba(213, 220, 43, 0.58));
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  white-space: normal;
}

.hero-detail {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

.hero-ai-visual::before {
  border-color: rgba(255, 255, 255, 0.34);
  box-shadow:
    0 0 0 48px rgba(255, 255, 255, 0.065),
    0 0 0 96px rgba(255, 255, 255, 0.04);
}

.ai-orb {
  background: radial-gradient(circle at 34% 28%, #ffffff, #d9f3f1 55%, #67bdb8 100%);
  box-shadow:
    inset -24px -28px 50px rgba(7, 89, 87, 0.17),
    0 22px 64px rgba(5, 63, 61, 0.25);
}

.orb-core,
.orb-core.is-pulinet {
  color: var(--ku-green-deep);
}

.orb-ring {
  border-color: rgba(7, 89, 87, 0.38);
}

.orb-node {
  box-shadow: 0 3px 10px rgba(5, 63, 61, 0.24);
}

.node-one {
  color: #fff;
  background: #0a615b;
}

.node-two {
  color: #0a615b;
  background: #cfd547;
}

.node-three {
  color: #2b1640;
  background: #c6a0de;
}

.node-four {
  color: #fff;
  background: #7b3d92;
  border-color: #fff;
}

.visual-label,
.signal-card {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(7, 89, 87, 0.2);
  box-shadow: 0 14px 30px rgba(5, 63, 61, 0.12);
}

.signal-card span,
.visual-label strong {
  color: var(--ku-green);
}

.hero-countdown-wrap .countdown-panel {
  border: 1px solid rgba(7, 89, 87, 0.13);
  border-top: 5px solid var(--gold);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 22px 56px rgba(5, 63, 61, 0.18);
}

.countdown-panel > p,
.countdown-grid strong {
  color: var(--ku-green-deep);
}

.countdown-panel > p span {
  background: var(--gold);
  box-shadow: none;
}

.countdown-grid,
.countdown-grid div {
  border-color: rgba(7, 89, 87, 0.13);
}

.countdown-grid span {
  color: var(--muted);
}

.overview-actions .button.primary,
.button.primary,
.button.light {
  color: var(--ink);
  background: var(--gold);
}

.overview-actions .button.secondary,
.button.ghost {
  color: var(--ku-green-deep);
  border-color: rgba(7, 89, 87, 0.25);
  background: var(--mint-light);
}

.section h2 {
  color: var(--ink);
  font-size: clamp(1.75rem, 3vw, 3.25rem);
}

.eyebrow,
.eyebrow.dark {
  color: var(--ku-green);
}

.intro-band {
  position: relative;
}

.intro-band::before {
  content: "KU";
  position: absolute;
  z-index: -1;
  top: 1.2rem;
  right: max(-2rem, calc((100vw - 1180px) / 2));
  color: rgba(10, 127, 122, 0.055);
  font-family: var(--font-display);
  font-size: clamp(10rem, 26vw, 24rem);
  font-weight: 800;
  line-height: 0.75;
  letter-spacing: -0.1em;
  pointer-events: none;
}

.feature-card,
.topic-card,
.date-panel,
.gallery-item {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 32px rgba(7, 89, 87, 0.07);
}

.feature-card:hover,
.topic-card:hover,
.gallery-item:hover {
  border-color: rgba(10, 127, 122, 0.38);
  box-shadow: 0 18px 42px rgba(7, 89, 87, 0.12);
}

.card-number,
.topic-card strong,
.timeline time {
  color: var(--ku-green);
}

.feature-card h3,
.topic-card span,
.visual-panel h3 {
  color: var(--ink);
}

.feature-card p,
.topic-card small,
.visual-panel p,
.gallery-item figcaption {
  color: var(--muted);
}

.timeline li {
  border-color: var(--line);
}

.visual-panel {
  color: var(--ink);
  background: linear-gradient(150deg, #e9f6f5, #bfe1df 58%, #8bc9c5);
  border-color: rgba(7, 89, 87, 0.18);
}

.visual-orbit,
.visual-orbit::before,
.visual-orbit::after {
  border-color: rgba(7, 89, 87, 0.24);
}

.visual-orbit span {
  color: var(--ink);
  background: var(--gold);
}

.visual-orbit span:nth-child(2) {
  color: var(--ku-green-deep);
  background: var(--white);
}

.visual-orbit span:nth-child(3) {
  color: var(--white);
  background: var(--ku-green);
}

.image-frame-1 {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.24), rgba(19, 163, 155, 0.17)),
    repeating-linear-gradient(90deg, rgba(7, 89, 87, 0.14) 0 1px, transparent 1px 22px),
    linear-gradient(135deg, #e7f5f4, #a7d7d4);
}

.image-frame-2 {
  background:
    linear-gradient(140deg, rgba(7, 89, 87, 0.58), rgba(225, 246, 244, 0.42)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.36) 0 1px, transparent 1px 18px),
    #58aaa6;
}

.image-frame-3 {
  background:
    linear-gradient(160deg, rgba(213, 220, 43, 0.3), rgba(255, 255, 255, 0.48)),
    repeating-linear-gradient(45deg, rgba(7, 89, 87, 0.13) 0 1px, transparent 1px 18px),
    #c8e6e4;
}

.sponsor-row span {
  color: var(--muted);
  background: var(--white);
  border-color: rgba(7, 89, 87, 0.28);
}

.registration-band {
  background: linear-gradient(118deg, var(--ku-green-deep), var(--ku-green) 60%, var(--leaf));
  border-top: 6px solid var(--gold);
}

.registration-copy h2,
.registration-copy p {
  color: var(--white);
}

.button.outline-light {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.site-footer {
  color: rgba(255, 255, 255, 0.76);
  background: var(--header-background);
}

.footer-brand,
.site-footer h2 {
  color: var(--white);
}

.site-footer a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-color: rgba(255, 255, 255, 0.16);
}

@media (max-width: 1120px) {
  .nav-toggle {
    background: var(--gold);
    border-color: rgba(255, 255, 255, 0.36);
  }

  .nav-toggle span:not(.sr-only) {
    background: var(--ink);
  }

  .primary-nav {
    background: linear-gradient(180deg, #ffffff, var(--mint-light));
  }

  .primary-nav > a,
  .nav-group > button {
    color: var(--ink);
  }

  .primary-nav > a:hover,
  .nav-group > button:hover,
  .nav-group > button[aria-expanded="true"] {
    color: var(--ku-green-deep);
    background: var(--ku-green-soft);
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-copy h1.conference-title {
    max-width: 100%;
  }
}

@media (max-width: 760px) {
  .hero.ai-hero {
    background: linear-gradient(180deg, #086f6c 0%, #4ba5a1 48%, #d7eeec 100%);
  }

  .hero-copy {
    text-align: center;
  }

  .hero-kicker {
    justify-content: center;
  }

  .hero-copy h1.conference-title {
    font-size: clamp(1.82rem, 8.8vw, 2.65rem);
    line-height: 1.17;
  }

  .conference-title span:last-child {
    white-space: normal;
  }

  .hero-theme span {
    margin-inline: auto;
  }

  .hero-detail {
    font-size: 0.88rem;
  }

  .hero-ai-visual {
    min-height: 304px;
  }

  .intro-band::before {
    top: 2rem;
    right: -1.5rem;
    font-size: 13rem;
  }

  .hero-countdown-wrap .countdown-panel {
    border-top-width: 4px;
  }
}