@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
  --paper: #f7f1e5;
  --paper-dark: #ebe1cf;
  --ink: #0b0b0c;
  --carbon: #262626;
  --sun: #edb01e;
  --vermillion: #d33a1a;
  --cobalt: #0f3d85;
  --sky: #008fb8;
  --forest: #0f7b6c;
  --hero-overlay-width: 50%;
  --hero-overlay-height: 30%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Poppins', system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0.01em;
  min-height: 100vh;
  background-image: url('assets/elementos_coloridos.png'), linear-gradient(120deg, rgba(247, 198, 0, 0.08), rgba(12, 61, 133, 0.04)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23a)' opacity='.16'/%3E%3C/svg%3E");
  background-attachment: fixed;
  background-size: calc(100vw - 6px), auto, auto;
  background-position: center, auto, auto;
  background-repeat: no-repeat, auto, auto;
}

body > main {
  flex: 1;
}

img {
  max-width: 100%;
  height: auto;

  object-fit: cover;
  object-position: center;  

  display: block;
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 120px 30px 6px;
  display: flex;
  flex-direction: column;
  gap: 56px;
  opacity: 90%;
}

.site-header {
  width: 100%;
  background: #efe6da;
  color: var(--ink);
  padding: 18px 24px;
  position: fixed;
  top: 0;
  z-index: 10;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 160px;
  height: auto;
}

.brand-mark span {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.site-nav {
  display: flex;
  flex: 1;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 11px;
  letter-spacing: 0.45em;
  text-decoration: none;
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: border 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover {
  border-color: rgba(18, 18, 18, 0.2);
  transform: translateY(-2px);
}

.header-cta a {
  text-decoration: none;
  display: inline-block;
  background: var(--sun);
  color: var(--ink);
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  transition: border 0.2s ease, transform 0.2s ease;
}

.header-cta a:hover {
  transform: translateY(-2px);
}

.section-shell {
  background: rgba(15, 15, 15, 0.88);
  border-radius: 24px;
  padding: 44px 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  color: #fff2f0ab;
  opacity: 98%;
}

.section-shell[data-accent="sun"],
.section-shell[data-accent="vermillion"],
.section-shell[data-accent="forest"],
.section-shell[data-accent="cobalt"] {
  background: rgba(15, 15, 15, 0.9);
}

.section-heading p.eyebrow,
.section-heading h2,
.section-heading p {
  color: #111111;
}

.section-heading {
  text-align: left;
  margin-bottom: 24px;
}

.section-heading .eyebrow {
  font-size: 12px;
  letter-spacing: 0.34em;
  font-weight: 700;
}

.section-heading h2 {
  font-size: clamp(24px, 4vw, 36px);
  margin: 8px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.section-heading p {
  max-width: 750px;
  font-size: 16px;
  line-height: 1.7;
  color: #d6d6d6;
}

.card,
.workshop-card,
.pillar-card,
.book-card {
  background: rgba(20, 20, 20, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.card:hover,
.workshop-card:hover,
.pillar-card:hover,
.book-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.7);
  border-color: rgba(255, 255, 255, 0.35);
}

.card p,
.card h3,
.workshop-card h3,
.pillar-card p,
.book-copy p {
  color: rgba(8, 8, 8, 0.94);
}

.card h3,
.workshop-card h3,
.pillar-card h3,
.book-copy h3,
.artist-card h3 {
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-top: 0;
  color: #0c0b0b;
}

.artist-card .eyebrow,
.card .eyebrow,
.workshop-card .eyebrow,
.pillar-card .eyebrow,
.book-card .eyebrow {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 600;
}

.card span,
.card strong,
.workshop-card strong,
.pillar-card strong,
.book-card strong {
  color: #070707;
  font-weight: 700;
}

.artist-card h3 {
  margin-top: 4px;
}

.artist-photo {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.artist-photo img {
  opacity: 0.95;
}

.hero-buttons .button-primary {
  border-color: #f0f1f7;
  background-color: #edb01e;
  color: #0b0b0b;
  opacity: 70%;
}

.hero-buttons .button-secondary {
  border-color: #f0f1f7;
  background: #4f59ed;
  color:#e0dede;
  opacity: 70%;
}

.cta {
  background: rgba(11,11,11,0.95);
  border: 1px solid rgba(255,255,255,0.12);
}

footer {
  border-top: 1px solid rgba(255,255,255,0.14);
  background: transparent;
}

footer a,
.footer-nav a,
footer p,
footer h3 {
  color: #030303;
}

@media (max-width: 900px) {
  .section-shell { padding: 32px 20px; }
}


.section-shell[data-accent="sun"] {
  background: #efe6da;
}

.section-shell[data-accent="vermillion"] {
  background: #efe6da;
}

.section-shell[data-accent="forest"] {
  background: #efe6da;
}

.section-shell[data-accent="cobalt"] {
  background: #efe6da;
}

h1,
h2,
h3,
.button,
.nav-link,
.eyebrow {
  font-family: 'Poppins', sans-serif;
  text-transform: uppercase;
}

.eyebrow {
  letter-spacing: 0.32em;
  font-size: 10px;
  color: var(--carbon);
}

header.section-shell {
  border-radius: 999px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero {
  height: auto;
  min-height: 80vh;
  margin: 0 auto 24px;
  position: relative;
  background: #000;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  opacity: 1;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  max-width: 1280px;
  width: 100%;
  padding: 90px 24px;
}

.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
}

@media (max-width: 1300px) {
  .hero {
    width: 100%;
    padding: 42px 20px;
  }
}

.hero::before {
  display: none;
}

.hero-content {
  z-index: 2;
  width: 100%;
  max-width: 900px;
}

/* Vídeo dentro das letras BAC 2026 — SVG clipPath */
.hero-title-svg-container {
  width: 100%;
  max-width: 860px;
}

.hero-title-svg {
  width: 100%;
  height: auto;
  display: block;
}

.hero-title-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-background {
  display: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.38);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  width: 84%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
}

.hero-eyebrow {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(11px, 1.1vw, 13px);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(245, 243, 243, 0.68);
  margin: 0;
}

.hero h1 {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  font-size: clamp(80px, 11vw, 110px);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.03;
  color: #fff;
  text-shadow: 0 0 15px rgba(0, 0, 0, 0.36);
  animation: none;
}

.hero-subtitle {
  font-family: 'Poppins', sans-serif;
  font-weight: 300;
  font-size: clamp(18px, 2.2vw, 30px);
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.82);
  margin: 0;
  text-transform: uppercase;
  opacity: 0.9;
}

@keyframes heroTitleGlow {
  0%, 100% { text-shadow: 0 0 12px rgba(255, 255, 255, 0.2); }
  50% { text-shadow: 0 0 16px rgba(255, 255, 255, 0.28); }
}

.hero-metadata {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(11px, 1.6vw, 18px);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.hero-metadata strong {
  font-weight: 800;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 8px;
}

.hero-buttons .button {
  border-radius: 999px;
  padding: 14px 24px;
  font-size: 13px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  min-width: 170px;
}

.button-primary {
  background: #fff;
  color: #0b0b0b;
  border: 1px solid transparent;
}

.button-secondary {
  background: transparent;
  color: #fff;
  border: 1px solid #fff;
}

.button-primary:hover,
.button-secondary:hover {
  opacity: 0.9;
}

.hero-wrapper,
.hero-left,
.hero-right,
.hero-panel,
.hero-meta,
.hero-description,
.agenda-card,
.agenda-dates,
.agenda-month,
.agenda-site,
.agenda-line,
.agenda-card,
.hero-logo {
  display: none;
}

.agenda-line + .agenda-line { margin-top: 1px; }

.agenda-line strong { font-weight: 900; }

.hero-panel small {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--carbon);
}

.hero p {
  font-size: 17px;
  line-height: 1.6;
  color:#fcfcff;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.cta .hero-buttons {
  justify-content: center;
}

.button {
  border-radius: 999px;
  padding: 14px 32px;
  font-size: 11px;
  letter-spacing: 0.25em;
  border: 2px solid transparent;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.3s ease, color 0.3s ease;
}

.button-primary {
  background: #edb01e;
  color: var(--paper);
}

.button-secondary {
  border-color: var(--ink);
  color: var(--ink);
}

.button:hover {
  transform: translateY(-3px);
}

.hero-visual {
  display: none;
}

.hero-stats {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.stat {
  background: transparent;
  border-radius: 0;
  padding: 12px 0;
  border: none;
}

.stat-label {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--carbon);
}

.stat-value {
  font-size: 22px;
  font-weight: 600;
}

.section-heading h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  margin: 8px 0;
}

.section-heading p {
  color: var(--carbon);
  max-width: 640px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.programacao-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.schedule-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.schedule-list li {
  position: relative;
  padding-left: 32px;
  font-size: 14px;
  line-height: 1.6;
}

.schedule-list .time {
  display: block;
  font-weight: 600;
  letter-spacing: 0.2em;
  font-size: 12px;
  text-transform: uppercase;
}

.schedule-list .detail {
  display: block;
}

.schedule-list li::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cobalt);
  box-shadow: 0 0 0 4px rgba(15, 61, 133, 0.15);
}

.schedule-list li::after {
  content: '';
  position: absolute;
  left: 14px;
  top: 18px;
  bottom: -14px;
  width: 2px;
  background: rgba(15, 61, 133, 0.2);
}

.schedule-list li:last-child::after {
  content: none;
}

.meta {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--carbon);
}

.card {
  border-radius: 0;
  border: none;
  padding: 24px;
  background: rgba(255, 255, 255, 0.6);
  box-shadow: none;
}

.workshops-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.workshop-card {
  border-radius: 28px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 28px;
  background: linear-gradient(145deg, #d7d2cd, #d7d2cdee);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  min-height: 200px;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: hidden;
  color: var(--ink);
}

.workshop-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

.workshop-more {
  align-self: flex-start;
  background: var(--sun);
  color: var(--ink);
  border: none;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-top: auto;
}

.workshop-more:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}
.artist-card {
  color: var(--ink);
}

.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 32px;
}

.store-copy p {
  margin-bottom: 20px;
  color: var(--carbon);
}

.store-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.store-placeholder {
  min-height: 220px;
  border: 1px dashed rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--carbon);
}

.book-card {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 28px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 32px;
}

.book-card.highlight.column {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.book-card.column .book-cover {
  max-width: 360px;
}

.book-cover {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.book-cover img {
  width: 100%;
  height: auto;
  display: block;
}

.book-copy h3 {
  margin: 6px 0 4px;
  font-size: 26px;
}

.book-perk {
  font-size: 14px;
  font-weight: 600;
  color: var(--vermillion);
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.ibb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 32px;
}

.ibb-copy p {
  margin-bottom: 16px;
  color: var(--carbon);
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.pillar-card {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 24px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pillar-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 100;
}

.modal-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.modal-body {
  background: var(--paper);
  padding: 32px;
  border-radius: 32px;
  max-width: 560px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  color: var(--ink);
}

.modal-description {
  color: var(--carbon);
  line-height: 1.6;
}

.modal-speaker h4 {
  margin: 6px 0;
  font-size: 20px;
}

.modal-cta {
  align-self: flex-start;
}

body.modal-open {
  overflow: hidden;
}

.artists .card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
  padding: 28px 20px 32px;
}

.artists .card .eyebrow {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  letter-spacing: 0.24em;
  font-size: 10px;
  color: var(--carbon);
  margin: 0;
  text-transform: uppercase;
}

.artist-title {
  font-family: 'Poppins', sans-serif;
  font-size: 30px;
  margin: 10px 0;
  line-height: 1.1;
  text-transform: none;
}

.artist-title .artist-first {
  font-weight: 500;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: none;
}

.artist-title .artist-last {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: none;
}

.artists .cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.artist-photo {
  width: 220px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  border: none;
  background: rgba(0, 0, 0, 0.05);
  margin: 0 auto 8px;
}

.artist-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.artists .card .button {
  align-self: center;
  text-align: center;
  min-width: 220px;
  margin-top: auto;
}

.hero-magnani {
  background: linear-gradient(145deg, rgba(247, 198, 0, 0.2), rgba(12, 61, 133, 0.1));
}

.hero-baruk {
  background: linear-gradient(145deg, rgba(211, 58, 26, 0.15), rgba(15, 123, 108, 0.12));
}

.hero-sabado {
  background: linear-gradient(145deg, rgba(0, 143, 184, 0.12), rgba(247, 198, 0, 0.2));
}

.hero-domingo {
  background: linear-gradient(145deg, rgba(15, 61, 133, 0.12), rgba(211, 58, 26, 0.15));
}

.keynote-card {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.keynote-photo {
  border-radius: 28px;
  overflow: hidden;
  border: none;
  background: #ddd;
}

.keynote-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reason-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-left: none;
  background: linear-gradient(90deg, #d7d2cd, #d7d2cdee);
  border-radius: 0;
}

.reason-item span {
  width: 12px;
  height: 12px;
  background: var(--cobalt);
  border-radius: 50%;
  flex-shrink: 0;
}

.reason-item p {
  color: #0b0b0b;
}

.cta {
  background: var(--ink);
  color: var(--paper);
  border-radius: 40px;
  padding: 48px 32px;
  border: 2px solid var(--ink);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta > p:not(.eyebrow) {
  margin-left: auto;
  margin-right: auto;
}

.ibb-grid {
  margin-bottom: 0;
}

.cta::before {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(247, 198, 0, 0.2);
  left: -60px;
  top: -40px;
}

.cta::after {
  display: none;
}

.cta h2 {
  font-size: clamp(32px, 4vw, 50px);
  margin: 12px 0;
}

.cta .button-primary {
  background: #edb01e;
  color: var(--ink);
}

.cta .button-secondary {
  border-color: var(--paper);
  color: var(--paper);
}

footer {
  background: transparent;
  border-radius: 0;
  padding: 32px;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-nav a,
footer a {
  text-decoration: none;
  color: inherit;
  letter-spacing: 0.25em;
  font-size: 12px;
}

@media (max-width: 900px) {
  .hero {
    padding: 32px;
  }

  .section-shell,
  .hero {
    padding: 24px;
  }

  .hero-wrapper {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-left {
    align-items: center;
  }

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

  body::before,
  body::after {
    display: none;
  }
}

/* ================================================
   HAMBURGER BUTTON
   ================================================ */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
  flex-shrink: 0;
  z-index: 20;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ================================================
   ≤ 900px — TABLET / BACKGROUND FIX
   ================================================ */
@media (max-width: 900px) {
  body {
    background-attachment: scroll;
  }
}

/* ================================================
   ≤ 768px — MOBILE NAVIGATION + LAYOUT
   ================================================ */
@media (max-width: 768px) {
  /* Header */
  .site-header {
    z-index: 20;
    padding: 14px 20px;
  }

  .brand-logo {
    width: 120px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    display: none;
    position: fixed;
    inset: 0;
    background: #fff;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    z-index: 15;
    padding: 32px;
    flex: unset;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    font-size: 16px;
    padding: 18px 24px;
    letter-spacing: 0.18em;
    border-radius: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    width: 100%;
    text-align: center;
  }

  /* Main layout */
  main {
    padding: 86px 16px 40px;
    gap: 28px;
  }

  /* Hero */
  .hero {
    min-height: 72vh;
    padding: 48px 16px 40px;
    border-radius: 16px;
  }

  .hero-content {
    gap: 10px;
    padding: 0;
    width: 100%;
  }

  .hero-eyebrow {
    font-size: 9px;
    letter-spacing: 0.22em;
  }

  .hero-metadata {
    white-space: normal;
    text-align: center;
    line-height: 1.8;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    width: 100%;
    gap: 10px;
    margin-top: 4px;
  }

  .hero-buttons .button {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  /* Sections */
  .section-shell {
    padding: 28px 18px;
    border-radius: 16px;
  }

  .section-shell::before,
  .section-shell::after {
    display: none;
  }

  .section-heading h2 {
    font-size: clamp(20px, 5.5vw, 32px);
  }

  /* Keynote card: stack to single column */
  .keynote-card {
    grid-template-columns: 1fr;
  }

  .keynote-photo {
    max-height: 280px;
  }

  /* Artist photo */
  .artist-photo {
    width: 150px;
  }

  /* Cards */
  .card {
    padding: 18px 16px;
  }

  /* CTA */
  .cta {
    padding: 36px 20px;
    border-radius: 24px;
  }

  .cta h2 {
    font-size: clamp(22px, 5.5vw, 36px);
  }

  /* Book */
  .book-card {
    padding: 20px 16px;
    border-radius: 20px;
  }

  .book-card.column .book-cover {
    max-width: 200px;
  }

  /* Store */
  .store-gallery {
    grid-template-columns: 1fr;
  }

  /* IBB pillars */
  .pillars {
    grid-template-columns: 1fr;
  }

  /* Reason items */
  .reason-item {
    padding: 12px 14px;
  }

  /* Workshop card */
  .workshop-card {
    padding: 22px 18px;
  }

  /* Footer */
  footer {
    padding: 24px 16px;
    text-align: center;
    align-items: center;
  }

  footer h3 {
    font-size: 18px !important;
  }

  .footer-nav {
    justify-content: center;
  }

  /* Modal with scroll */
  .modal-body {
    padding: 24px 20px;
    border-radius: 20px;
    max-height: 88vh;
    overflow-y: auto;
  }

  /* Background */
  body {
    background-image: linear-gradient(120deg, rgba(247, 198, 0, 0.08), rgba(12, 61, 133, 0.04)),
      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23a)' opacity='.16'/%3E%3C/svg%3E");
  }
}

/* ================================================
   ≤ 480px — SMALL MOBILE (iPhone 13 / S23 Ultra)
   ================================================ */
@media (max-width: 480px) {
  .hero {
    min-height: 65vh;
    padding: 36px 12px 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .section-shell {
    padding: 22px 14px;
  }

  .artist-photo {
    width: 130px;
  }

  .cta {
    padding: 28px 16px;
  }

  .hero-buttons .button {
    max-width: 100%;
  }
}