/* Ringier Future Summit 2026 — Workshop Microsite
   Brand: Ringier AG global brand guidelines
   Fonts: Bodoni Moda Bold (Google Fonts), Lato (Google Fonts)
   Mobile-first, minimal, editorial */

@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:opsz,wght@6..96,700&family=Lato:wght@300;400;700&display=swap');

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

body {
  margin: 0;
  padding: 0;
  font-family: 'Lato', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 300;
  font-size: 18px;
  line-height: 1.7;
  color: #000;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Bodoni optical size override ────────────────── */
/* Force lower opsz to thicken hairline strokes at display sizes */
.hero h1,
.section h2,
.takeaway-heading,
.takeaway-item h3,
.resource-card h3,
.article-header h1,
.article-body h2,
.article-body h3,
.podcast-title,
.skill-item h3,
.concept-item h3,
.usecase-item h3 {
  font-optical-sizing: none;
  font-variation-settings: 'opsz' 26;
}

/* ─── Layout ──────────────────────────────────────── */

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Header ──────────────────────────────────────── */

header {
  padding: 18px 0;
  border-bottom: 1px solid #ebebeb;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo svg {
  display: block;
  width: 110px;
  height: auto;
}

.header-back {
  font-size: 14px;
  color: #666;
  text-decoration: none;
  font-weight: 400;
  letter-spacing: 0;
}

.header-back:hover {
  color: #e6007e;
}

/* Almost hidden — intentionally quiet */
.header-extras {
  font-size: 11px;
  color: #ccc;
  text-decoration: none;
  font-weight: 300;
  letter-spacing: 0.02em;
}

.header-extras:hover {
  color: #999;
}

/* ─── Landing hero ────────────────────────────────── */

.hero {
  padding: 36px 0 0;
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #e6007e;
  margin: 0 0 10px;
}

.hero h1 {
  font-family: 'Bodoni Moda', 'Libre Bodoni Std 1', Georgia, serif;
  font-weight: 700;
  font-size: clamp(30px, 7vw, 46px);
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin: 0 0 12px;
}

.hero .sub {
  font-size: 16px;
  color: #777;
  margin: 0 0 20px;
}

.hero-intro {
  font-size: 17px;
  color: #444;
  line-height: 1.7;
  margin: 0 0 14px;
  max-width: 640px;
}

.hero-intro a {
  color: #e6007e;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.hero-intro a:hover {
  color: #c40070;
}

/* ─── Sections (landing page) ─────────────────────── */

.section {
  padding: 32px 0;
  border-top: 1px solid #ebebeb;
  margin-top: 32px;
}

.section-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #e6007e;
  margin-bottom: 8px;
}

.section h2 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 20px;
  line-height: 1.2;
  margin: 0 0 8px;
}

.section p {
  font-size: 17px;
  color: #444;
  margin: 0 0 14px;
}

/* Share callout — tighter than a full section */
.section.section-share {
  margin-top: 16px;
  padding-top: 20px;
}

/* ─── Primary button ──────────────────────────────── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #e6007e;
  color: #fff;
  text-decoration: none;
  padding: 14px 22px;
  font-size: 16px;
  font-weight: 700;
  font-family: 'Lato', sans-serif;
  border-radius: 6px;
  min-height: 48px;
  transition: background 0.15s ease;
}

.btn-primary:hover {
  background: #c40070;
}

.btn-primary .arrow {
  font-size: 18px;
  line-height: 1;
}

/* ─── Prompt reveal (details/summary) ─────────────── */

.prompt-reveal {
  margin-top: 14px;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}

.prompt-reveal summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 18px;
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
  list-style: none;
  background: #f6f6f6;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.1s;
}

.prompt-reveal summary:hover {
  background: #efefef;
}

.prompt-reveal summary::-webkit-details-marker {
  display: none;
}

.toggle-icon {
  font-size: 22px;
  font-weight: 300;
  color: #e6007e;
  line-height: 1;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.prompt-reveal[open] .toggle-icon {
  transform: rotate(45deg);
}

.prompt-body {
  padding: 18px 18px 20px;
  background: #f6f6f6;
  border-top: 1px solid #e0e0e0;
}

.prompt-note {
  font-size: 13px;
  color: #777;
  margin: 0 0 12px;
  font-style: italic;
}

.prompt-text {
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  line-height: 1.65;
  color: #111;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0 0 16px;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 5px;
  padding: 14px 16px;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1.5px solid #000;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  font-family: 'Lato', sans-serif;
  cursor: pointer;
  border-radius: 5px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  min-height: 44px;
}

.btn-copy:hover {
  background: #000;
  color: #fff;
}

.btn-copy.copied {
  border-color: #009fe3;
  color: #009fe3;
}

/* ─── Prompt formatted display ────────────────────── */

.prompt-display {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 5px;
  padding: 16px 18px;
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.65;
}

.prompt-display p {
  margin: 0 0 10px;
  color: #222;
}

.prompt-display p:last-child {
  margin-bottom: 0;
}

.prompt-section-head {
  font-weight: 700 !important;
  font-size: 11px !important;
  text-transform: uppercase !important;
  letter-spacing: 0.1em !important;
  color: #e6007e !important;
  margin-top: 16px !important;
  margin-bottom: 6px !important;
}

.prompt-display ul,
.prompt-display ol {
  padding-left: 20px;
  margin: 0 0 10px;
}

.prompt-display li {
  margin-bottom: 6px;
  line-height: 1.55;
  color: #222;
  font-size: 16px;
}

.prompt-display strong {
  font-weight: 700;
  color: #000;
}

.prompt-display code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 12px;
  background: #ebebeb;
  padding: 1px 5px;
  border-radius: 3px;
}

/* ─── Article cards (extra-credits page) ─────────── */

.article-cards {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.article-card {
  display: block;
  text-decoration: none;
  color: #000;
  padding: 28px 0;
  border-top: 1px solid #ebebeb;
  transition: none;
}

.article-card:last-child {
  border-bottom: 1px solid #ebebeb;
}

.article-card-meta {
  margin-bottom: 8px;
}

.article-card-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #e6007e;
}

.article-card h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: clamp(18px, 3vw, 22px);
  margin: 0 0 10px;
  line-height: 1.2;
}

.article-card p {
  font-size: 16px;
  color: #555;
  margin: 0 0 14px;
  line-height: 1.65;
  max-width: 600px;
}

.article-card .card-arrow {
  font-size: 14px;
  font-weight: 700;
  color: #e6007e;
  transition: transform 0.15s;
  display: inline-block;
}

.article-card:hover h3 {
  color: #e6007e;
}

/* ─── Resource cards ──────────────────────────────── */

.resource-cards {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.resource-card {
  display: block;
  text-decoration: none;
  color: #000;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  padding: 18px 20px;
  transition: border-color 0.15s;
}

.resource-card:hover {
  border-color: #e6007e;
}

.resource-card h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 17px;
  margin: 0 0 4px;
  line-height: 1.2;
}

.resource-card p {
  font-size: 15px;
  color: #666;
  margin: 0 0 10px;
  line-height: 1.5;
}

.resource-card .card-arrow {
  font-size: 13px;
  font-weight: 700;
  color: #e6007e;
}

/* ─── Article layout (primer + checklist) ─────────── */

/* Constrain reading column to comfortable width, centered within wider container */
.article-header,
.article-body {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.article-header {
  padding: 36px 0 28px;
  border-bottom: 1px solid #ebebeb;
}

.article-header h1 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: clamp(24px, 5.5vw, 38px);
  line-height: 1.12;
  margin: 0 0 12px;
}

.article-header .lead {
  font-size: 18px;
  color: #444;
  line-height: 1.65;
  margin: 0;
}

.article-body {
  padding: 36px 0 80px;
}

.article-body h2 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 22px;
  line-height: 1.2;
  margin: 48px 0 12px;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 17px;
  line-height: 1.3;
  margin: 28px 0 8px;
}

.article-body p {
  margin: 0 0 18px;
  color: #222;
  line-height: 1.75;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
  margin: 0 0 18px;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.65;
  color: #222;
}

.article-body strong {
  font-weight: 700;
  color: #000;
}

.article-body em {
  font-style: italic;
}

.article-body code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  background: #f0f0f0;
  padding: 2px 6px;
  border-radius: 3px;
}

.article-body blockquote {
  border-left: 3px solid #e6007e;
  margin: 24px 0;
  padding: 0 0 0 20px;
}

.article-body blockquote p {
  color: #333;
  font-style: italic;
}

.article-body a {
  color: #e6007e;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.article-body a:hover {
  color: #c40070;
}

.article-body hr {
  border: none;
  border-top: 1px solid #ebebeb;
  margin: 40px 0;
}

/* Question blocks (checklist page) */
.question-number {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #e6007e;
  margin-bottom: 4px;
}

/* Callout boxes */
.callout {
  background: #f6f6f6;
  border-radius: 6px;
  padding: 16px 18px;
  margin: 18px 0;
}

.callout p {
  margin: 0;
  font-size: 17px;
}

/* ─── Podcast card ───────────────────────────────── */

.podcast-card {
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  padding: 22px 22px 18px;
  margin: 18px 0;
}

.podcast-meta {
  margin-bottom: 16px;
}

.podcast-show {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #999;
  margin: 0 0 4px;
}

.podcast-title {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 19px;
  line-height: 1.2;
  margin: 0 0 6px;
}

.podcast-detail {
  font-size: 13px;
  color: #999;
  margin: 0;
}

.podcast-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.podcast-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  color: #444;
  padding: 8px 14px;
  border: 1.5px solid #e0e0e0;
  border-radius: 5px;
  transition: border-color 0.15s, color 0.15s;
}

.podcast-link:hover {
  border-color: #e6007e;
  color: #e6007e;
}

.podcast-link svg {
  flex-shrink: 0;
}

/* ─── Skills grid ────────────────────────────────── */

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin: 18px 0;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}

.skill-item {
  padding: 18px 20px;
  background: #fff;
  border-bottom: 1px solid #ebebeb;
}

.skill-item:last-child {
  border-bottom: none;
}

.skill-item h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 16px;
  margin: 0 0 4px;
  line-height: 1.3;
}

.skill-item p {
  font-size: 16px;
  color: #666;
  margin: 0;
  line-height: 1.55;
}

/* ─── Concept list (extras page) ─────────────────── */

.concept-list {
  margin: 18px 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.concept-item {
  padding: 20px 0;
  border-bottom: 1px solid #ebebeb;
}

.concept-item:first-child {
  padding-top: 0;
}

.concept-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.concept-item h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 17px;
  margin: 0 0 4px;
  line-height: 1.3;
}

.concept-item p {
  font-size: 16px;
  color: #555;
  margin: 0 0 10px;
  line-height: 1.65;
}

.concept-item .prompt-reveal {
  margin-top: 8px;
}

.concept-item .prompt-body p {
  font-size: 16px;
  color: #444;
  margin: 0 0 12px;
  line-height: 1.65;
}

/* ─── Use case list ──────────────────────────────── */

.usecase-list {
  margin: 18px 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.usecase-item {
  padding: 20px 0;
  border-bottom: 1px solid #ebebeb;
}

.usecase-item:first-child {
  padding-top: 0;
}

.usecase-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.usecase-item h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 17px;
  margin: 0 0 4px;
  line-height: 1.3;
}

.usecase-item p {
  font-size: 16px;
  color: #555;
  margin: 0;
  line-height: 1.65;
}

/* ─── Takeaway list (main page) ──────────────────── */

.section-takeaways {
  padding-top: 48px;
  padding-bottom: 16px;
}

.takeaway-heading {
  font-size: 28px !important;
  margin-bottom: 28px !important;
}

.takeaway-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.takeaway-item {
  padding: 28px 0;
  border-top: 1px solid #ebebeb;
}

.takeaway-item:last-child {
  padding-bottom: 0;
}

.takeaway-number {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #e6007e;
  margin: 0 0 8px;
}

.takeaway-item h3 {
  font-family: 'Bodoni Moda', Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: clamp(22px, 4vw, 28px);
  margin: 0 0 10px;
  line-height: 1.2;
  color: #000;
}

.takeaway-item p {
  font-size: 17px;
  color: #444;
  margin: 0;
  line-height: 1.7;
  max-width: 640px;
}

/* ─── Typography accents ──────────────────────────── */

.period         { color: #e6007e; }
.period-yellow  { color: #ffde14; }
.period-cyan    { color: #009fe3; }

/* ─── Footer ──────────────────────────────────────── */

footer {
  margin-top: 0;
}

.footer-gradient {
  height: 2px;
  background: linear-gradient(to right, #e6007e, #ffde14, #009fe3);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 18px 24px;
  font-size: 13px;
  color: #aaa;
}

/* ─── Responsive ──────────────────────────────────── */

/* Desktop — 640px and up */
@media (min-width: 640px) {
  .container {
    padding: 0 40px;
  }

  .header-inner {
    padding: 0 40px;
  }

  .footer-inner {
    padding: 20px 40px;
  }

  .hero {
    padding: 56px 0 0;
  }

  .hero h1 {
    font-size: 56px;
  }

  .section {
    padding: 44px 0;
    margin-top: 44px;
  }

  .section-takeaways {
    padding-top: 56px;
  }

  .takeaway-heading {
    font-size: 36px !important;
    margin-bottom: 36px !important;
  }

  .takeaway-item {
    padding: 36px 0;
  }

  .takeaway-item h3 {
    font-size: 28px;
  }

  /* Resource cards go 2-column on desktop */
  .resource-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .skills-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .skill-item {
    border-bottom: 1px solid #ebebeb;
    border-right: 1px solid #ebebeb;
  }

  .skill-item:nth-child(even) {
    border-right: none;
  }

  .skill-item:nth-last-child(-n+2) {
    border-bottom: none;
  }

  .article-header {
    padding: 56px 0 36px;
  }

  .article-header h1 {
    font-size: 40px;
  }

  .article-body {
    padding: 44px 0 100px;
  }
}

/* Large desktop — 900px and up */
@media (min-width: 900px) {
  .container {
    padding: 0 48px;
  }

  .header-inner {
    padding: 0 48px;
  }

  .footer-inner {
    padding: 20px 48px;
  }
}

/* Small mobile */
@media (max-width: 400px) {
  .hero h1 {
    font-size: 28px;
  }
  .article-header h1 {
    font-size: 24px;
  }
  .prompt-text {
    font-size: 12px;
  }
}