/* ==========================================================================
   Qiskit Fall Fest 2026 — University of Windsor
   Design tokens → base → layout → components → responsive
   ========================================================================== */

:root {
  /* Palette */
  --ink: #07081a; /* page background */
  --light-blue: #dae5fc;
  --ink-2: #0d0f27; /* alternate section background */
  --panel: #141737; /* cards, panels */
  --panel-2: #1a1e45; /* raised card / hover */
  --line: #262b5c; /* hairlines and borders */
  --text: #31135e; /* primary text */
  --muted: #a2a7ce; /* secondary text */
  --muted-light: #d7d9ed; /* secondary text */
  --violet: #7b4dff; /* primary brand */
  --violet-soft: #b57bff;
  --cyan: #33e1e1; /* accent / active */
  --pink: #ff7eb6; /* accent 2 */

  /* isa picks */
  --flamingo: #ffafd2;
  --bright-pink: #ff7eb6;

  --purple: #be95ff;
  --soft-purple: #d4bbff;

  --indigo: #31135e;
  --dark-indigo: #31135e;

  --soft-blue: #dae5fc;
  --medium-blue: #9daede;
  --blue-bird: #4589ff;

  --grey: #878a98;
  --soft-grey: #bac0c6;

  /* Type */
  --font-display:
    "IBM Plex Sans Condensed", "IBM Plex Sans", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Metrics */
  --shell: 1180px;
  --gutter: 24px;
  --radius: 14px;
  --header-h: 0px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0px);
}

body {
  margin: 0;
  /* min-width: 320px; */
  overflow-x: hidden;
  background: var(--light-blue);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--cyan);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  line-height: 1.15;
  font-weight: 600;
}
p {
  margin: 0 0 1em;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--cyan);
  color: var(--ink);
  padding: 10px 18px;
  font-weight: 600;
  border-radius: 0 0 8px 0;
}
.skip-link:focus {
  left: 0;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: 600 15px/1 var(--font-body);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    transform 0.18s var(--ease),
    background 0.18s var(--ease),
    border-color 0.18s var(--ease),
    color 0.18s var(--ease);
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(100deg, var(--purple), #9a5cff);
  color: #fff;
  box-shadow: 0 8px 24px -12px rgba(123, 77, 255, 0.9);
}
.btn-primary:hover {
  background: linear-gradient(100deg, #8a5cff, #ab74ff);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 16px;
}

/* ---------- Shared section furniture ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(51, 225, 225, 0.16);
}

.section {
  padding: 64px 0 0 0;
  /* border-top: 1px solid var(--line); */
}
.section-alt {
  background: var(--ink-2);
}

.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.35em;
}
.section-sub {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

.sub-head {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 8, 26, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s var(--ease);
  transition: transform 0.3s ease;
  box-shadow: 0 8px 24px -12px rgba(0, 0, 0, 0.35);
}
.site-header.is-stuck {
  box-shadow: 0 12px 32px -22px #000;
}
.site-header.header-hidden {
  transform: translateY(-100%);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}
.brand:hover {
  text-decoration: none;
}
.brand img {
  border-radius: 9px;
  height: 110px;
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-line-1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.1;
}
.brand-line-2 {
  font: 400 11px/1.4 var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.06em;
}

.site-nav {
  margin-left: auto;
}
.site-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  display: block;
  padding: 8px 11px;
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 500;
  border-radius: 8px;
  transition:
    color 0.18s var(--ease),
    background 0.18s var(--ease);
}
.site-nav a:hover {
  color: var(--muted-light);
  background: var(--panel);
  text-decoration: none;
}
.site-nav a.is-active {
  color: var(--cyan);
  background: rgba(51, 225, 225, 0.09);
}

/* Menu dropdowns */
/* ---- About dropdown (desktop) ---- */
.has-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}
.dropdown-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 8px 6px;
  border-radius: 8px;
}
.dropdown-toggle svg {
  transition: transform 0.18s var(--ease);
}
.dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 208px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px;
  display: grid;
  gap: 2px;
  box-shadow: 0 16px 32px -16px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.16s var(--ease),
    transform 0.16s var(--ease),
    visibility 0.16s var(--ease);
  z-index: 40;
}
.dropdown a {
  font-size: 13.5px;
  white-space: nowrap;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.has-dropdown:focus-within .dropdown-toggle svg,
.has-dropdown:hover .dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-register {
  display: none;
} /* only shown inside the mobile drawer */
.header-register {
  flex: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform 0.25s var(--ease),
    opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0;
}

/* soft violet bloom behind the artwork */
/* .hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -45% 35%;
  height: 620px;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(123, 77, 255, 0.3),
    transparent 62%
  );
  pointer-events: none;
} */

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.3em;
}
.hero h1 .year {
  /* background: linear-gradient(92deg, var(--cyan), var(--violet-soft)); */
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--violet-soft);
}
.hero-lede {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.8em;
}
.hero-text {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 52ch;
}

.hero-details {
  font-size: 1.3em;
  font-weight: 600;
  display: flex;
  flex-direction: column;
}

.hero-detail {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 40px;
}

.hero-actions a {
  max-width: 200px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero-stats dt {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-stats dd {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.hero-media {
  margin: 0;
}
.hero-media img {
  /* width: 100%; */
  height: 300px;
  /* border: 1px solid var(--line); */
  /* border-radius: var(--radius); */
  /* background: var(--panel); */
  /* smoothing hero image */
  /* -webkit-mask-image:
    linear-gradient(to right, transparent, black 10%, black 90%, transparent),
    linear-gradient(to bottom, transparent, black 10%, black 90%, transparent);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent, black 10%, black 90%, transparent),
    linear-gradient(to bottom, transparent, black 10%, black 90%, transparent);
  mask-composite: intersect; */
}
/* .hero-media figcaption {
  margin-top: 12px;
  text-align: right;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
} */

.hero-media figcaption {
  margin-top: 12px;
  text-align: right;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.7;
}

/* HERO ANIMATION */
/* ---------- Flying flock behind the cloud ---------- */
.hero-media {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.hero-cloud {
  width: 95%;
  margin-left: 2.5%;
  position: relative;
  z-index: 1;
  animation: cloud-pulse 6s ease-in-out infinite;
}

@keyframes cloud-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-cloud {
    animation: none;
  }
}

.sky-flock {
  position: absolute;
  inset: 0;
  /* z-index: 1; */
  pointer-events: none;
}

.flyer {
  z-index: 5;
  position: absolute;
  top: var(--top, 20%);
  left: -155%;
  will-change: left;
  animation: flyRight var(--fly-duration, 18s) linear infinite;
  animation-delay: var(--fly-delay, 0s);
}

.flyer.fly-left {
  animation-name: flyLeft;
  right: -115%;
}

.flyer img,
.flyer svg {
  width: var(--size, 60px);
  height: auto;
  animation: bob var(--bob-duration, 3s) ease-in-out infinite;
  animation-delay: var(--bob-delay, 0s);
}

@keyframes flyRight {
  from {
    left: -15%;
  }
  to {
    left: 115%;
  }
}

@keyframes flyLeft {
  from {
    left: 95%;
  }
  to {
    left: -15%;
  }
}

@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-18px);
  }
}
/*
.flyer {
  position: absolute;
  height: var(--size);
  animation: flyRight var(--fly-duration, 18s) linear infinite;
  animation-delay: var(--fly-delay, 0s);
}

.flyer.fly-left {
  animation-name: flyLeft;
  left: 115%;
}

@keyframes flyRight {
  from {
    left: -15%;
  }
  to {
    left: 115%;
  }
}

@keyframes flyLeft {
  from {
    left: 115%;
  }
  to {
    left: -15%;
  }
}

@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
} */

/* Wing flap — two stacked frames, alternating visibility */
/* .wing-flap {
  position: relative;
  width: var(--size, 60px);
  animation: bob var(--bob-duration, 3s) ease-in-out infinite;
  animation-delay: var(--bob-delay, 0s);
} */

/* .wing-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  animation: flap-cycle var(--flap-duration, 0.45s) steps(1) infinite;
}

.wing-frame img {
  height: 100px;
}

.wing-down {
  animation-delay: 0s;
}
.wing-up {
  position: relative;
  top: 100px;
  animation-delay: calc(var(--flap-duration, 0.45s) / 2);
}

@keyframes flap-cycle {
  0%,
  49.9% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
} */

@media (prefers-reduced-motion: reduce) {
  .flyer,
  .flyer img,
  .flyer svg {
    animation: none;
  }
}

/* PEEKER */
.peeker {
  position: absolute;
  bottom: var(--peek-bottom, 50%);
  right: var(--peek-left, 20%);
  width: var(--peek-size, 100px);
  animation: peek-cycle var(--peek-duration, 11s) ease-in-out infinite;
  animation-delay: var(--peek-delay, 0s);
}

/* @media (max-width: 430px) {
  .peeker {
    --peek-bottom: 100px !important;
  }
} */

@media (max-width: 600px) {
  .peeker {
    bottom: 48% !important;
    width: 50px !important;
  }
}

.peeker img {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes peek-cycle {
  0%,
  72% {
    transform: translateY(0);
  }
  80% {
    transform: translateY(-34%);
  }
  85% {
    transform: translateY(-38%);
  }
  90% {
    transform: translateY(-34%);
  }
  96%,
  100% {
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .peeker {
    animation: none;
  }
}

/* ARCHER */

.arcer {
  position: absolute;
  left: var(--arc-start-left, 45%);
  bottom: var(--arc-bottom, 45%);
  width: var(--arc-size, 70px);
  z-index: 0; /* behind the cloud, which sits at z-index: 1 */
  animation:
    arc-left var(--arc-duration, 10s) ease-in-out infinite,
    arc-lift var(--arc-duration, 10s) ease-in-out infinite;
  animation-delay: var(--arc-delay, 0s);
}

.arcer img {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes arc-left {
  0%,
  100% {
    left: var(--arc-start-left, 15%);
  }
  50% {
    left: var(--arc-end-left, 60%);
  }
}

@keyframes arc-lift {
  0%,
  100% {
    transform: translateY(0) scale(0.88);
  }
  50% {
    transform: translateY(-170px) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .arcer {
    animation: none;
  }
}

/* ==========================================================================
   About
   ========================================================================== */
.about-rows {
  display: grid;
  gap: 22px;
  margin-bottom: 56px;
}

.about-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition:
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.about-row:hover {
  border-color: var(--violet);
  transform: translateY(-3px);
}
.about-art img {
  width: 100%;
  border-radius: 10px;
}
.about-body h4 {
  font-family: var(--font-display);
  font-size: 1.35rem;
}
.about-body p {
  color: var(--muted);
  margin: 0;
}

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px 26px;
  transition:
    border-color 0.2s var(--ease),
    background 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.card:hover {
  border-color: var(--cyan);
  background: var(--panel-2);
  transform: translateY(-3px);
}
.card-tag {
  display: block;
  margin-bottom: 14px;
  font: 600 12px/1 var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.card h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
}
.card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.97rem;
}

/* ==========================================================================
   Schedule
   ========================================================================== */
.days {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.day {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
}
.day-head {
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.day-head h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.25em;
}
.day-time {
  margin: 0;
  font: 500 13px/1 var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.block-label {
  margin: 28px 0 16px;
  font: 500 11px/1.5 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.block-label:first-of-type {
  margin-top: 0;
}

/* Timeline rail — the vertical line is the circuit wire, each item a gate */
.rail {
  position: relative;
  padding-left: 26px;
}
.rail::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--violet), var(--cyan));
  opacity: 0.55;
}
.rail li {
  position: relative;
  padding: 0 0 22px;
}
.rail li:last-child {
  padding-bottom: 0;
}
.rail li::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--ink-2);
  border: 2px solid var(--cyan);
}
.rail-time {
  display: block;
  margin-bottom: 5px;
  font: 500 12.5px/1 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--cyan);
}
.rail-body h4 {
  font-size: 1.02rem;
  font-weight: 600;
  margin-bottom: 0.2em;
}
.rail-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

/* ==========================================================================
   Hackathon
   ========================================================================== */
.hack {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 40px;
  align-items: start;
}

.hack-lede {
  font-size: 1.12rem;
  color: var(--text);
  max-width: 62ch;
}

.hack-list {
  display: grid;
  gap: 18px;
  margin: 32px 0;
}
.hack-list li {
  padding-left: 20px;
  border-left: 2px solid var(--violet);
}
.hack-list h4 {
  font-size: 1.05rem;
  margin-bottom: 0.25em;
}
.hack-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.97rem;
}

.hack-close {
  color: var(--muted);
  margin-bottom: 28px;
}

.hack-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.hack-panel h4 {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}
.hack-panel dl {
  margin: 0;
  display: grid;
  gap: 16px;
}
.hack-panel dt {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.hack-panel dd {
  margin: 3px 0 0;
  font-weight: 600;
  font-size: 0.98rem;
}

/* ==========================================================================
   Speakers
   ========================================================================== */
.speakers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.speaker {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition:
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.speaker:hover {
  border-color: var(--violet);
  transform: translateY(-3px);
}
.speaker-photo img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
}
.speaker-body h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.3em;
}
.speaker-body p {
  margin: 0 0 0.5em;
  color: var(--muted);
  font-size: 0.95rem;
}
.speaker-body .role {
  color: var(--cyan);
  font-weight: 500;
}
.speaker-body .org {
  color: var(--text);
  font-weight: 500;
}
.org-logo {
  width: 118px;
  margin-top: 10px;
  border-radius: 6px;
}

/* ==========================================================================
   People grids (faculty + team)
   ========================================================================== */
.people {
  display: grid;
  gap: 24px;
}
.people-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}
.people-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.people-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.person {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 16px;
  transition:
    border-color 0.2s var(--ease),
    background 0.2s var(--ease),
    transform 0.2s var(--ease);
}
.person:hover {
  border-color: var(--cyan);
  background: var(--panel-2);
  transform: translateY(-4px);
}
.person img {
  width: 116px;
  height: 116px;
  margin: 0 auto 16px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--line);
}
.person h3 {
  font-size: 1.06rem;
  margin-bottom: 0.3em;
}
.person .role {
  margin: 0;
  font-size: 0.87rem;
  color: var(--cyan);
}
.person .org {
  margin: 0.3em 0 0;
  font-size: 0.84rem;
  color: var(--muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list {
  display: grid;
  gap: 14px;
  max-width: 860px;
}

.faq-list details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}
.faq-list details[open] {
  border-color: var(--violet);
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary::after {
  content: "+";
  font: 400 24px/1 var(--font-mono);
  color: var(--cyan);
  transition: transform 0.22s var(--ease);
}
.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-body {
  padding: 0 24px 22px;
  color: var(--muted);
}
.faq-body p {
  margin: 0;
}

/* ==========================================================================
   Location
   ========================================================================== */
.location {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 38px;
  align-items: start;
}

.location-info h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
}
.loc-block {
  padding-top: 22px;
  margin-top: 22px;
  border-top: 1px solid var(--line);
}
.loc-block:first-of-type {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}
.loc-block h4 {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}
.loc-block address {
  font-style: normal;
  color: var(--muted);
  line-height: 1.8;
}
.loc-block p {
  color: var(--muted);
  font-size: 0.97rem;
}
.loc-block strong {
  color: var(--text);
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.pills li {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: 500 12.5px/1.4 var(--font-body);
  color: var(--muted);
}

.location-map {
  margin: 0;
}
.location-map img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}
.location-map a:hover img {
  border-color: var(--cyan);
}
.location-map figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: 0.87rem;
  color: var(--muted);
}

/* ==========================================================================
   Register band
   ========================================================================== */
.register {
  padding: 68px 0;
  background:
    radial-gradient(
      ellipse at 15% 0%,
      rgba(123, 77, 255, 0.34),
      transparent 58%
    ),
    radial-gradient(
      ellipse at 88% 100%,
      rgba(51, 225, 225, 0.18),
      transparent 58%
    ),
    var(--ink-2);
  border-top: 1px solid var(--line);
}
.register-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: center;
  justify-content: space-between;
}
.register h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
}
.register p {
  margin: 0;
  color: var(--muted);
  max-width: 56ch;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding-top: 62px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand img {
  border-radius: 10px;
  margin-bottom: 16px;
}
.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.2em;
}
.footer-brand .org {
  color: var(--cyan);
  font-size: 0.93rem;
  margin-bottom: 1em;
}
.footer-brand p {
  color: var(--muted);
  font-size: 0.93rem;
}

.footer-col h4 {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 18px;
}
.footer-col ul {
  display: grid;
  gap: 11px;
}
.footer-col li,
.footer-col a {
  color: var(--muted);
  font-size: 0.93rem;
}
.footer-col a:hover {
  color: var(--cyan);
}

.partner-logos {
  gap: 14px;
}
.partner-logos img {
  width: 132px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.footer-base {
  padding: 22px 24px;
  border-top: 1px solid var(--line);
}
.footer-base p {
  margin: 0;
  font-size: 0.87rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- Scroll to top ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition:
    opacity 0.25s var(--ease),
    transform 0.25s var(--ease),
    visibility 0.25s var(--ease),
    border-color 0.2s var(--ease);
}
.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.6s var(--ease),
    transform 0.6s var(--ease);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1100px) {
  .people-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .people-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .speakers {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
  }
}

@media (max-width: 980px) {
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    display: grid;
    gap: 8px;
    padding: 18px var(--gutter) 26px;
    background: var(--ink-2);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.22s var(--ease),
      transform 0.22s var(--ease),
      visibility 0.22s var(--ease);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
  }
  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }
  .site-nav > ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .site-nav a {
    padding: 13px 14px;
    font-size: 1rem;
  }
  .nav-register {
    display: inline-flex;
    margin-top: 10px;
  }
  .header-register {
    display: none;
  }
  .nav-toggle {
    display: block;
    margin-left: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    /* gap: 44px; */
  }
  .hero-media {
    order: 1;
  }
  .days {
    grid-template-columns: 1fr;
  }
  .hack {
    grid-template-columns: 1fr;
  }
  .hack-panel {
    position: static;
  }
  .location {
    grid-template-columns: 1fr;
  }

  /* ---- About dropdown (mobile): always expanded ---- */
  .has-dropdown {
    flex-direction: column;
    align-items: stretch;
  }
  .dropdown-toggle {
    display: none; /* no toggle needed, submenu is always visible */
  }
  .dropdown {
    position: static;
    min-width: 0;
    background: none;
    border: none;
    padding: 2px 0 2px 14px;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
    display: grid;
    gap: 2px;
  }
  .dropdown a {
    font-size: 0.92rem;
    color: var(--muted);
    padding: 10px 14px;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 24px 0;
  }
  .section-head {
    margin-bottom: 38px;
  }
  .cards-3 {
    grid-template-columns: 1fr;
  }
  .about-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .people-5,
  .people-4,
  .people-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 18px;
  }
  .speaker {
    grid-template-columns: 1fr;
  }
  .speaker-photo img {
    width: 150px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .register-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 430px) {
  :root {
    --gutter: 18px;
  }
  .brand-line-2 {
    display: none;
  }
  .people-5,
  .people-4,
  .people-3 {
    grid-template-columns: 1fr;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Print ---------- */
@media print {
  .site-header,
  .to-top,
  .hero-grid,
  .hero-media,
  .register {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
  .section,
  .section-alt {
    background: #fff;
    padding: 20px 0;
  }
}

/* TEAM CARDS */
.team-member {
  width: 100%;
  /* background-color: red; */
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
  align-items: center;
  border: 1px black solid;
  border-radius: 10%;
}

.team-member-photo {
  margin-top: 24px;
  width: 150px;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 50%;
  background-color: rgb(156, 186, 186);
}

.team-member-photo img {
  max-width: 70%;
  max-height: 70%;
  object-fit: contain;
  display: block;
  object-position: center;
}

.team-member-text {
  text-align: center;
  width: 90%;
  margin-left: 5%;
  display: flex;
  flex-direction: column;
  padding: 18px;
}

.team-member-name {
  font-size: 18px;
  color: var(--violet);
}

.team-member-position {
  text-transform: uppercase;
  font-size: 12px;
  color: rgb(56, 56, 150);
  font-weight: 600;
}
.team-member-bio {
}

.highlight {
  font-weight: bold;
  color: var(--blue-bird);
}

.about-img {
  /* margin: 24px 0; */
}
.about-img img {
  width: 80%;
  margin-left: 10%;
  height: auto;
  border-radius: var(--radius);
  /* border: 1px solid var(--line); */
  display: block;
}
.about-img figcaption {
  margin-top: 16px;
  font-size: 0.87rem;
  color: var(--muted);
  text-align: center;
}
.sub-head-text {
  margin-bottom: 32px;
}