/* SF Media Summit — 2026
   Self-hosted Fraunces + Instrument Sans (SIL Open Font License)
*/

@font-face {
  font-family: "Fraunces";
  src: url("/fonts/Fraunces-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Fraunces";
  src: url("/fonts/Fraunces-Italic-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Sans";
  src: url("/fonts/InstrumentSans-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-stretch: 75% 100%;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Serif";
  src: url("/fonts/InstrumentSerif-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Serif";
  src: url("/fonts/InstrumentSerif-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #0b0a09;
  --bg-2: #13110f;
  --bg-3: #1b1814;
  --ink: #f4eee6;
  --ink-dim: #c9c0b4;
  --muted: #91887c;
  --gold: #c9a56a;
  --gold-2: #e8d0a0;
  --line: rgba(244, 238, 230, 0.12);
  --line-strong: rgba(201, 165, 106, 0.5);
  --serif: "Fraunces", "Instrument Serif", "Palatino Linotype", Palatino, serif;
  --serif-body: "Instrument Serif", "Fraunces", Georgia, serif;
  --sans: "Instrument Sans", "Helvetica Neue", ui-sans-serif, system-ui, sans-serif;
  --max: 72rem;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --header-h: 4.25rem;
  --radius: 2px;
  --shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 80;
  opacity: 0.07;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.85'/%3E%3C/svg%3E");
}

:focus-visible {
  outline: 2px solid var(--gold-2);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: 0.75rem;
  transform: translateY(-200%);
  background: var(--gold);
  color: #1a140c;
  padding: 0.5rem 0.8rem;
  font-weight: 600;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  transform: none;
}

img,
svg {
  max-width: 100%;
  display: block;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-variation-settings: "SOFT" 40, "WONK" 1, "opsz" 72;
  margin: 0;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--gold-2);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

.eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

/* Header
   -------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
  flex-shrink: 0;
}

.wordmark-mark {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--gold);
  letter-spacing: -0.03em;
}

.wordmark-text {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav ul {
  display: flex;
  gap: 1.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 450;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 1.1rem;
  height: 1.5px;
  background: currentColor;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.nav-open .nav-toggle-bars { background: transparent; }
.nav-open .nav-toggle-bars::before { top: 0; transform: rotate(45deg); }
.nav-open .nav-toggle-bars::after { top: 0; transform: rotate(-45deg); }

/* Buttons
   -------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gold);
  color: #1a140c;
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--gold);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover,
.btn:focus-visible {
  background: var(--gold-2);
  border-color: var(--gold-2);
  color: #1a140c;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: transparent;
  color: var(--gold-2);
  border-color: var(--gold);
}

.btn-small {
  padding: 0.55rem 0.9rem;
  font-size: 0.8rem;
}

/* Hero
   -------------------------------------------------- */

.hero {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 6.5rem) var(--gutter) clamp(3.5rem, 8vw, 7rem);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  min-height: calc(100vh - var(--header-h));
  align-items: end;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 40%;
  pointer-events: none;
  background: radial-gradient(ellipse at 20% 0%, rgba(201, 165, 106, 0.08), transparent 55%);
}

.hero-kicker {
  display: block;
  font-family: var(--serif-body);
  font-style: italic;
  font-weight: 400;
  font-size: 0.28em;
  letter-spacing: 0.02em;
  color: var(--gold);
  margin-bottom: 0.15em;
}

.hero h1 {
  font-size: clamp(3.4rem, 11vw, 8.4rem);
  font-weight: 450;
  line-height: 0.9;
  letter-spacing: -0.04em;
  max-width: 12ch;
  font-variation-settings: "SOFT" 60, "WONK" 1, "opsz" 144;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--gold-2);
  display: block;
}

.hero-lead {
  margin: 1.75rem 0 1.75rem;
  max-width: 32rem;
  font-family: var(--serif-body);
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  line-height: 1.45;
  color: var(--ink-dim);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem 1.5rem;
  margin: 0;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  max-width: 40rem;
}

.hero-meta dt {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.hero-meta dd {
  margin: 0;
  font-family: var(--serif-body);
  font-size: 1.15rem;
  color: var(--ink);
}

.hero-rail {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: flex;
  gap: 2.5rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding-bottom: 0.5rem;
  border-left: 1px solid var(--line);
  padding-left: 1.25rem;
}

.hero-rail span + span::before {
  content: "–";
  display: inline-block;
  margin: 0 0 1.1rem;
  color: var(--gold);
}

/* Sections
   -------------------------------------------------- */

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6.5rem) var(--gutter);
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
  max-width: 42rem;
}

.section h2 {
  font-size: clamp(2rem, 4.6vw, 3.35rem);
  font-weight: 450;
}

.section-intro {
  margin-top: 1rem;
  color: var(--ink-dim);
  font-size: 1.05rem;
  max-width: 40rem;
}

.lede {
  font-family: var(--serif-body);
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
  line-height: 1.45;
  color: var(--ink);
}

/* About
   -------------------------------------------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: start;
}

.about-copy {
  color: var(--ink-dim);
  font-size: 1.05rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

/* Schedule
   -------------------------------------------------- */

.agenda {
  display: grid;
  gap: 1.25rem;
}

.day {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.day-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  padding: 1.25rem 1.4rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(201, 165, 106, 0.06), transparent 50%);
}

.day-head h3 {
  font-size: 1.55rem;
  font-weight: 500;
}

.day-head p {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}

.slots {
  list-style: none;
  margin: 0;
  padding: 0.25rem 0;
}

.slots li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding: 1.05rem 1.4rem;
  border-top: 1px solid transparent;
}

.slots li + li {
  border-top-color: var(--line);
}

.slots time {
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  font-size: 0.92rem;
  font-weight: 550;
  padding-top: 0.2rem;
}

.slots h4 {
  font-family: var(--sans);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0;
  margin-bottom: 0.2rem;
}

.slots p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Speakers
   -------------------------------------------------- */

.speaker-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.speaker-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 0.7rem 0.7rem 1.15rem;
}

.portrait {
  aspect-ratio: 6 / 7;
  margin-bottom: 0.9rem;
  background: var(--bg-3);
  overflow: hidden;
}

.portrait svg {
  width: 100%;
  height: 100%;
}

.p-bg {
  fill: #1f1b16;
}

.p-mark {
  color: var(--gold);
  opacity: 0.7;
}

.p-frame {
  color: var(--gold);
}

.p-tba {
  fill: var(--gold-2);
  font-family: "Fraunces", "Instrument Serif", serif;
  font-style: italic;
  font-size: 9px;
  letter-spacing: 0.18em;
}

.speaker-card:nth-child(2) .p-bg { fill: #231a16; }
.speaker-card:nth-child(3) .p-bg { fill: #17181c; }
.speaker-card:nth-child(4) .p-bg { fill: #1c1a14; }
.speaker-card:nth-child(5) .p-bg { fill: #1a1618; }
.speaker-card:nth-child(6) .p-bg { fill: #161916; }

.speaker-card h3 {
  font-family: var(--serif-body);
  font-style: italic;
  font-size: 1.2rem;
  padding: 0 0.35rem;
  font-weight: 400;
}

.speaker-card p {
  margin: 0.15rem 0 0;
  padding: 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Venue
   -------------------------------------------------- */

.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 5vw, 3.5rem);
  align-items: start;
}

.venue-copy address {
  font-style: normal;
  margin: 1.4rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--serif-body);
  font-size: 1.3rem;
  line-height: 1.45;
}

.venue-copy address strong {
  font-family: var(--serif);
  font-weight: 500;
  font-style: italic;
  color: var(--gold-2);
}

.venue-copy p {
  color: var(--ink-dim);
}

.venue-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 0.7rem;
}

.map-bg { fill: #15130f; }
.map-grid { stroke: rgba(244, 238, 230, 0.06); stroke-width: 1; fill: none; }
.map-street { stroke: rgba(201, 165, 106, 0.35); stroke-width: 3; fill: none; }
.map-pin { fill: none; stroke: var(--gold); stroke-width: 2; }
.map-pin-core { fill: var(--gold); }
.map-label {
  fill: var(--ink);
  font-family: "Instrument Serif", serif;
  font-size: 13px;
  font-style: italic;
}
.map-sub, .map-corner {
  fill: #9a9186;
  font-family: "Instrument Sans", sans-serif;
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.venue-card-caption {
  margin: 0.7rem 0.3rem 0.3rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Tickets
   -------------------------------------------------- */

.ticket-panel {
  display: grid;
  grid-template-columns: minmax(16rem, 0.85fr) 1.15fr;
  gap: 0;
  border: 1px solid var(--line-strong);
  background: var(--bg-2);
  box-shadow: var(--shadow);
}

.ticket-price {
  padding: clamp(1.75rem, 4vw, 2.75rem);
  background:
    linear-gradient(160deg, rgba(201, 165, 106, 0.14), transparent 55%),
    var(--bg-3);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.price-label,
.price-note {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.price {
  margin: 0.35rem 0 0.4rem;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 7vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-variation-settings: "SOFT" 30, "WONK" 0, "opsz" 96;
}

.price .currency {
  font-size: 0.45em;
  margin-right: 0.08em;
  color: var(--gold);
  vertical-align: super;
}

.ticket-details {
  padding: clamp(1.75rem, 4vw, 2.75rem);
}

.ticket-details h3 {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.9rem;
  color: var(--gold);
}

.ticket-details ul {
  margin: 0 0 1.25rem;
  padding: 0 0 0 1.1rem;
  color: var(--ink-dim);
}

.ticket-details li + li {
  margin-top: 0.45rem;
}

.ticket-details .btn {
  margin-top: 0.5rem;
}

/* FAQ
   -------------------------------------------------- */

.faq-list {
  max-width: 46rem;
  display: grid;
  gap: 0.5rem;
}

.faq-list details {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 0 1.15rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-weight: 560;
  padding: 1.05rem 1.6rem 1.05rem 0;
  position: relative;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-list details[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
}

.faq-list details p {
  margin: 0 0 1.15rem;
  color: var(--ink-dim);
  max-width: 40rem;
}

/* Footer
   -------------------------------------------------- */

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) var(--gutter) 3.25rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 2rem 1.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
}

.site-footer h2 {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 0.85rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li + li,
.footer-brand p {
  margin-top: 0.35rem;
}

.site-footer a {
  color: var(--ink-dim);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--gold-2);
  text-decoration: underline;
}

.footer-wordmark {
  margin-bottom: 0.85rem;
}

.footer-brand p {
  color: var(--ink-dim);
}

.footer-fine {
  margin: 1.6rem 0 0;
  padding-bottom: 0.25rem;
  color: var(--ink-dim);
  font-size: 0.85rem;
}

.footer-fine a {
  color: inherit;
}

/* Responsive
   -------------------------------------------------- */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-rail {
    writing-mode: horizontal-tb;
    transform: none;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.85rem 1.25rem;
    border-left: 0;
    padding-left: 0;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }

  .hero-rail span + span::before {
    display: none;
  }

  .about-grid,
  .venue-grid,
  .ticket-panel,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .ticket-price {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .speaker-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    z-index: 60;
  }

  .site-nav {
    display: none;
    position: fixed;
    inset: 0;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(18px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 5rem var(--gutter);
  }

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

  .site-nav ul {
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
  }

  .site-nav a {
    font-size: 1.25rem;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .slots li {
    grid-template-columns: 4.2rem 1fr;
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

@media (max-width: 560px) {
  .speaker-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero h1 {
    font-size: clamp(3rem, 18vw, 4.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}