/* =====================================================================
   FOOTPRINT — COMPONENT STYLES
   Every colour here reads from a token. If you find yourself typing a
   hex value in this file, it belongs in footprint-tokens.css instead.
   ===================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: var(--t-body);
  line-height: var(--lh-text);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}

:where(a, button, select, [tabindex]):focus-visible {
  outline: 2px solid var(--accent-ink);
  outline-offset: 3px;
  border-radius: 3px;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.display {
  font-family: var(--font-display);
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --- Skip link ---------------------------------------------------- */
.skip {
  position: absolute;
  left: var(--sp-4);
  top: -100px;
  z-index: 200;
  background: var(--pop);
  color: var(--pop-ink);
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--r-pill);
  font-weight: var(--w-bold);
  transition: top var(--dur-base) var(--ease);
}
.skip:focus {
  top: var(--sp-4);
}

/* --- Header ------------------------------------------------------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding-block: var(--sp-5);
  position: relative;
  z-index: 5;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-weight: var(--w-bold);
  font-size: 0.8125rem;
}
.brand__mark {
  inline-size: 26px;
  block-size: 26px;
  border-radius: var(--r-sm);
  flex: none;
  background: linear-gradient(140deg, var(--accent), var(--pop));
  display: grid;
  place-items: center;
}
.brand__mark span {
  inline-size: 9px;
  block-size: 9px;
  border-radius: var(--r-xs);
  background: var(--ground);
  display: block;
}
.brand em {
  font-style: normal;
  color: var(--accent-ink);
}

.site-nav ul {
  display: flex;
  gap: var(--sp-5);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  color: var(--mute);
  font-weight: var(--w-medium);
  font-size: 0.84375rem;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent-ink);
}
@media (max-width: 900px) {
  .site-nav {
    display: none;
  }
}

.btn {
  display: inline-block;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  background: var(--pop);
  color: var(--pop-ink);
  padding: var(--sp-4) var(--sp-6);
  border-radius: var(--r-pill);
  font-weight: var(--w-bold);
  font-size: 0.9375rem;
  transition: filter var(--dur-fast) var(--ease);
}
.btn:hover {
  filter: brightness(1.08);
}
.btn--sm {
  padding: 0.625rem 1.1875rem;
  font-size: 0.8125rem;
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

/* --- Hero --------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.25rem, 5vw, 3.875rem) clamp(2.75rem, 6vw, 4.875rem);
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--hero-wash) center / cover no-repeat;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  display: block;
  opacity: 0.62;
  z-index: 1;
}
[data-stream="light"] .hero__canvas {
  opacity: 0.78;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(
    122% 94% at 78% 34%,
    transparent 30%,
    var(--ground) 88%
  );
}
.hero > .container {
  position: relative;
  z-index: 3;
}
.hero__inner {
  max-width: 48rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  border: 1px solid var(--line);
  background: var(--surf);
  color: var(--accent-ink);
  padding: 0.4375rem var(--sp-4);
  border-radius: var(--r-pill);
  font-size: 0.71875rem;
  font-weight: var(--w-bold);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  margin-block-end: var(--sp-5);
}
.eyebrow b {
  inline-size: 6px;
  block-size: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: block;
  animation: pulse 2.6s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.25;
  }
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: var(--w-black);
  font-size: var(--t-hero);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  margin: 0 0 var(--sp-5);
  text-wrap: balance;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, var(--accent-ink), var(--pop));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: var(--t-lead);
  line-height: 1.5;
  color: var(--mute);
  max-width: 40ch;
  margin: 0 0 var(--sp-6);
}

.facts {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-block-end: var(--sp-6);
  list-style: none;
  padding: 0;
}
.fact {
  background: var(--surf);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: 0.1875rem;
}
.fact dt {
  font-size: var(--t-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--mute);
}
.fact dd {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: var(--w-bold);
  letter-spacing: -0.01em;
}

.hero__actions {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  align-items: center;
}
.countdown {
  display: flex;
  gap: var(--sp-4);
  margin-inline-start: var(--sp-2);
  font-variant-numeric: tabular-nums;
  list-style: none;
  padding: 0;
}
.countdown div {
  text-align: center;
}
.countdown b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--w-bold);
  letter-spacing: -0.03em;
  color: var(--accent-ink);
}
.countdown span {
  display: block;
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-block-start: 2px;
}
@media (max-width: 640px) {
  .countdown {
    margin-inline-start: 0;
    inline-size: 100%;
    margin-block-start: var(--sp-3);
  }
}

/* --- Sections ----------------------------------------------------- */
.section {
  padding-block: var(--sec-y);
}
.section--band {
  background: var(--surf);
}
.section__eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 var(--sp-4);
  font-weight: var(--w-bold);
}
.section h2 {
  font-family: var(--font-display);
  font-weight: var(--w-bold);
  font-size: var(--t-h2);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  margin: 0 0 var(--sp-4);
  max-width: 20ch;
  text-wrap: balance;
}
.section__intro {
  font-size: var(--t-body-lg);
  line-height: 1.62;
  color: var(--mute);
  max-width: var(--measure);
  margin: 0 0 var(--sp-7);
}

/* --- Horizontal rail (focus areas, gallery) ----------------------- */
.rail {
  display: flex;
  gap: var(--sp-4);
  overflow-x: auto;
  padding-block-end: var(--sp-3);
  scroll-snap-type: x mandatory;
}
.rail > * {
  scroll-snap-align: start;
  flex: none;
}

.card-focus {
  inline-size: 300px;
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: var(--sp-6) var(--sp-5) 1.75rem;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.card-focus__tag {
  font-size: 0.65625rem;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--accent-ink);
  font-weight: var(--w-bold);
}
.card-focus p {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.4;
  font-weight: var(--w-medium);
}
.card-focus__bar {
  block-size: 3px;
  border-radius: 2px;
  margin-block-start: auto;
  background: linear-gradient(90deg, var(--accent), transparent);
}

/* --- Programme ---------------------------------------------------- */
.daytabs {
  display: flex;
  gap: var(--sp-2);
  margin-block-end: var(--sp-6);
  flex-wrap: wrap;
}
.daytab {
  background: var(--surf);
  border: 1px solid var(--line);
  color: var(--mute);
  padding: 0.625rem var(--sp-5);
  border-radius: var(--r-pill);
  font-size: 0.84375rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition:
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}
.daytab[aria-selected="true"] {
  background: var(--accent);
  color: var(--ground);
  border-color: var(--accent);
}

.sessions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}
@media (max-width: 900px) {
  .sessions {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .sessions {
    grid-template-columns: 1fr;
  }
}
.session {
  background: var(--surf);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 1.375rem var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: 0.5625rem;
}
.session__meta {
  font-size: 0.6875rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--pop);
  font-weight: var(--w-bold);
  font-variant-numeric: tabular-nums;
}
.session h3 {
  font-size: 1rem;
  font-weight: var(--w-bold);
  line-height: 1.32;
  letter-spacing: -0.01em;
  margin: 0;
}
.session p {
  margin: 0;
  font-size: var(--t-small);
  line-height: 1.5;
  color: var(--mute);
}
.note {
  margin: var(--sp-5) 0 0;
  font-size: var(--t-small);
  color: var(--mute);
}

/* --- Speakers holding panel --------------------------------------- */
.holding {
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: var(--r-2xl);
  padding: clamp(1.75rem, 5vw, 3.25rem);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.125rem;
  align-items: center;
}
@media (max-width: 820px) {
  .holding {
    grid-template-columns: 1fr;
  }
}
.holding h2 {
  font-size: var(--t-h3);
  margin-block-end: 0.6875rem;
}
.holding p {
  margin: 0 0 var(--sp-5);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--mute);
  max-width: 46ch;
}
.holding__slots {
  display: flex;
}
.holding__slot {
  inline-size: 60px;
  block-size: 60px;
  border-radius: 50%;
  border: 2px solid var(--surf);
  background: var(--surf);
  margin-inline-start: -14px;
  display: grid;
  place-items: center;
  color: var(--mute);
  font-size: 1.1875rem;
  font-weight: var(--w-bold);
}
.holding__slot:first-child {
  margin-inline-start: 0;
}

/* --- Venue -------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.625rem, 4vw, 3.375rem);
  align-items: center;
}
@media (max-width: 840px) {
  .split {
    grid-template-columns: 1fr;
  }
}
.vfacts {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-block-start: var(--sp-6);
  list-style: none;
  padding: 0;
}
.vfacts li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: var(--sp-4);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.vfacts span[aria-hidden] {
  color: var(--accent-ink);
  font-weight: var(--w-bold);
}

/* --- Partners ----------------------------------------------------- */
.tiers {
  display: grid;
  gap: var(--sp-5);
  margin-block-start: 1.875rem;
}
.tier {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: var(--sp-5);
  align-items: center;
}
@media (max-width: 640px) {
  .tier {
    grid-template-columns: 1fr;
    gap: 0.6875rem;
  }
}
.tier__label {
  font-size: 0.65625rem;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--mute);
  font-weight: var(--w-bold);
}
.logos {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.logo {
  background: var(--ground);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  font-weight: var(--w-bold);
  letter-spacing: -0.01em;
}
.logo--lead {
  block-size: 70px;
  min-inline-size: 168px;
  font-size: 1rem;
  padding-inline: 1.375rem;
}
.logo--sub {
  block-size: 56px;
  min-inline-size: 126px;
  font-size: 0.84375rem;
  padding-inline: 1.125rem;
  color: var(--mute);
}

/* --- Register ----------------------------------------------------- */
.register {
  border: 1px solid var(--line);
  border-radius: var(--r-2xl);
  background: var(--surf);
  padding: clamp(2.125rem, 5.5vw, 4rem);
}
.register h2 {
  font-family: var(--font-display);
  font-weight: var(--w-black);
  font-size: clamp(1.6875rem, 4.2vw, 2.875rem);
  line-height: 1;
  letter-spacing: -0.035em;
  margin: 0 0 var(--sp-4);
  max-width: 17ch;
}
.register p {
  margin: 0 0 1.75rem;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--mute);
  max-width: 46ch;
}

/* --- Footer ------------------------------------------------------- */
.site-footer {
  padding-block: 2.25rem;
  border-block-start: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: var(--sp-5);
  flex-wrap: wrap;
  font-size: var(--t-small);
  color: var(--mute);
}
.site-footer ul {
  display: flex;
  gap: var(--sp-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

/* --- Image slots --------------------------------------------------
   Replace .slot with a <picture>/<img> at the stated aspect ratio.
   Keep the ratio; the layout depends on it.                          */
.slot {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  text-align: center;
  background: var(--surf);
  color: var(--mute);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
}
.slot::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.1;
  background: repeating-linear-gradient(
    135deg,
    transparent 0 10px,
    currentColor 10px 11px
  );
}
.slot__label {
  position: relative;
  padding: var(--sp-4);
  max-width: 90%;
}
.slot__label span {
  display: block;
  font-size: 0.59375rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.6;
}
.slot__label b {
  display: block;
  font-size: var(--t-small);
  font-weight: 600;
  line-height: 1.42;
  margin-block-start: 7px;
  opacity: 0.92;
}
.rail .slot {
  inline-size: 340px;
}

/* --- Reduced motion ----------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}