/* -----------------------------------------------------------------------------
   Fpcharts — light / dark tokens bound to artwork palettes
   ----------------------------------------------------------------------------- */

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

:root {
  --font-display: "Syne", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  --cream: #f3efe6;
  --cream-warm: #ebe4d6;
  --ink: #0b1528;
  --ink-soft: #1c2f4a;
  --blue-deep: #0c2d5c;
  --blue-mid: #3b6cab;
  --blue-soft: #8eb4e0;

  --bg: var(--cream);
  --bg-alt: var(--cream-warm);
  --surface: rgba(255, 255, 255, 0.45);
  --text: var(--ink);
  --text-muted: color-mix(in srgb, var(--ink) 58%, transparent);
  --accent: var(--blue-deep);
  --border: color-mix(in srgb, var(--ink) 12%, transparent);
  --grid: color-mix(in srgb, var(--blue-mid) 14%, transparent);
  --shadow: rgba(15, 30, 60, 0.08);

  color-scheme: light;
}

html[data-theme="dark"] {
  --cream: #0e0f12;
  --cream-warm: #12141a;
  --ink: #e8eef8;
  --ink-soft: #b8c4da;
  --blue-deep: #5ba3ff;
  --blue-mid: #7ecbff;
  --blue-soft: #aee4ff;

  --bg: #0a0b0f;
  --bg-alt: #10131c;
  --surface: rgba(20, 28, 45, 0.55);
  --text: #e9eef9;
  --text-muted: color-mix(in srgb, var(--text) 65%, transparent);
  --accent: var(--blue-mid);
  --border: color-mix(in srgb, white 14%, transparent);
  --grid: color-mix(in srgb, var(--blue-deep) 18%, transparent);
  --shadow: rgba(0, 0, 0, 0.45);

  color-scheme: dark;
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.94rem + 0.35vw, 1.125rem);
  line-height: 1.62;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.45;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% -10%, black, transparent);
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.07;
  mix-blend-mode: multiply;
}

html[data-theme="dark"] .grain {
  mix-blend-mode: screen;
  opacity: 0.12;
}

.grain::after {
  content: "";
  position: absolute;
  inset: -50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.35rem;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
  color: inherit;
  text-decoration: none;
}

.logo:focus-visible,
.nav a:focus-visible,
.theme-toggle:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.top__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
}

.nav {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
}

.nav a {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.25s var(--ease-out);
}

.nav a:hover {
  color: var(--accent);
}

.theme-toggle {
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border-radius: 0.55rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    border-color 0.25s,
    background 0.25s,
    color 0.25s;
}

.theme-toggle:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  color: var(--accent);
}

.theme-toggle__icon {
  grid-area: 1 / 1;
  width: 1.3rem;
  height: 1.3rem;
  pointer-events: none;
  transition:
    opacity 0.22s var(--ease-out),
    transform 0.32s var(--ease-out);
}

.theme-toggle__icon--moon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.theme-toggle__icon--sun {
  opacity: 0;
  transform: scale(0.82) rotate(-18deg);
}

html[data-theme="dark"] .theme-toggle__icon--moon {
  opacity: 0;
  transform: scale(0.82) rotate(12deg);
}

html[data-theme="dark"] .theme-toggle__icon--sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

main {
  position: relative;
  z-index: 1;
}

/* Hero */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: clip;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__art {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.6s var(--ease-out);
}

.hero__art--light {
  opacity: 1;
}

.hero__art--dark {
  opacity: 0;
}

html[data-theme="dark"] .hero__art--light {
  opacity: 0;
}

html[data-theme="dark"] .hero__art--dark {
  opacity: 1;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bg) 55%, transparent) 0%,
    transparent 35%,
    transparent 62%,
    color-mix(in srgb, var(--bg) 88%, transparent) 100%
  );
  pointer-events: none;
}

html[data-theme="dark"] .hero__veil {
  background: linear-gradient(
    180deg,
    rgba(10, 11, 15, 0.55) 0%,
    transparent 40%,
    transparent 60%,
    rgba(10, 11, 15, 0.92) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 42rem;
  padding: 6rem 1.75rem 4rem;
  text-align: center;
}

.hero__eyebrow {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__title {
  margin: 0 0 0.85rem;
  font-weight: 800;
  letter-spacing: -0.055em;
  font-size: clamp(3rem, 8vw + 1rem, 6.75rem);
  line-height: 0.94;
}

.hero__lede {
  margin: 0 auto;
  max-width: 30em;
  font-size: clamp(1rem, 0.92rem + 0.55vw, 1.28rem);
  color: var(--text-muted);
  font-weight: 500;
}

.hero__scroll {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__scroll svg {
  opacity: 0.75;
}

@media (prefers-reduced-motion: no-preference) {
  .hero__dot {
    animation: scroll-dot 2.4s ease-in-out infinite;
  }
}

@keyframes scroll-dot {
  0%,
  100% {
    transform: translateY(0);
    opacity: 1;
  }
  55% {
    transform: translateY(10px);
    opacity: 0.35;
  }
}

/* Wavy divider */

.wave-line {
  width: 100%;
  height: 28px;
  color: var(--accent);
  opacity: 0.42;
}

.wave-line svg {
  display: block;
  width: 100%;
  height: 100%;
}

.wave-line__path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

@media (prefers-reduced-motion: no-preference) {
  .wave-line--top .wave-line__path {
    animation: wave-drift-a 28s linear infinite alternate;
  }
  .wave-line--bottom .wave-line__path {
    animation: wave-drift-b 32s linear infinite alternate;
  }
}

@keyframes wave-drift-a {
  from {
    transform: translateX(-12px);
  }
  to {
    transform: translateX(12px);
  }
}

@keyframes wave-drift-b {
  from {
    transform: translateX(10px);
  }
  to {
    transform: translateX(-14px);
  }
}

.wave-line svg {
  overflow: visible;
}

/* Sections */

.section {
  position: relative;
  padding: clamp(3rem, 6vw, 5rem) clamp(1.25rem, 4vw, 3rem);
}

.section--narrow {
  max-width: 38rem;
  margin-inline: auto;
}

.section__title {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 1.2rem + 2vw, 2.75rem);
  letter-spacing: -0.035em;
  font-weight: 800;
}

.lead {
  font-size: 1.12em;
  color: var(--text-muted);
  font-weight: 600;
}

.section p {
  margin: 0 0 1.1em;
}

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  font-weight: 500;
  color: var(--accent);
}

.section--split {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  max-width: 72rem;
  margin-inline: auto;
  align-items: start;
}

@media (min-width: 900px) {
  .section--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .section__sticky {
    position: sticky;
    top: 6rem;
  }
}

.section__dek {
  margin: -0.25rem 0 1.35rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pullquote {
  margin: 0 0 1.35rem;
  padding: 1.15rem 0 1.15rem 1rem;
  border-left: 3px solid var(--accent);
  font-style: italic;
  font-size: 1.05em;
  color: color-mix(in srgb, var(--text) 88%, transparent);
}

.panel {
  margin: 0;
  padding: clamp(0.75rem, 2vw, 1.25rem);
  border-radius: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 18px 50px var(--shadow);
}

.panel img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
}

.panel figcaption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.panel--tight {
  padding: clamp(0.5rem, 1.25vw, 0.85rem);
}

.section--band {
  background: linear-gradient(
    175deg,
    var(--bg-alt),
    color-mix(in srgb, var(--bg) 94%, var(--accent))
  );
  border-block: 1px solid var(--border);
}

html[data-theme="dark"] .section--band {
  background: linear-gradient(175deg, #0d1018 0%, #111722 52%, #0a0d14 100%);
}

.section--band__inner {
  max-width: 72rem;
  margin-inline: auto;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

@media (min-width: 840px) {
  .section--band__inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.1fr);
    gap: 2.75rem;
  }
}

.section--accent {
  text-align: center;
  padding-bottom: clamp(4rem, 9vw, 6rem);
}

.section--accent .lead {
  max-width: 36rem;
  margin-inline: auto;
}

.section--accent p:last-of-type:not(.lead) {
  max-width: 34rem;
  margin-inline: auto;
  color: var(--text-muted);
}

/* Footer */

.footer {
  position: relative;
  z-index: 1;
  padding: 2rem 1.5rem 2.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.65rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer__mark {
  font-weight: 600;
}

.footer__note {
  color: var(--text-muted);
}

@media (max-width: 560px) {
  .top {
    flex-wrap: wrap;
    align-items: center;
    row-gap: 0;
    padding-left: max(1rem, env(safe-area-inset-left, 0px));
    padding-right: max(1rem, env(safe-area-inset-right, 0px));
    padding-top: max(0.75rem, calc(0.55rem + env(safe-area-inset-top, 0px)));
    padding-bottom: 0.75rem;
  }

  .logo {
    order: 1;
  }

  .top__actions {
    order: 2;
    margin-left: auto;
  }

  .nav {
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    flex-basis: 100%;
    margin: 0;
    margin-top: 0;
    padding-top: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    border-top: 1px solid transparent;
    transition:
      max-height 0.38s var(--ease-out),
      opacity 0.22s var(--ease-out),
      visibility 0s linear 0.35s,
      padding-top 0.38s var(--ease-out),
      border-color 0.25s ease;
  }

  .top--nav-open .nav {
    max-height: 16rem;
    opacity: 1;
    visibility: visible;
    margin-top: 0.5rem;
    padding-top: 0.625rem;
    border-top-color: var(--border);
    transition:
      max-height 0.42s var(--ease-out),
      opacity 0.28s var(--ease-out),
      visibility 0s linear 0s,
      padding-top 0.42s var(--ease-out),
      border-color 0.25s ease;
  }

  .nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.5rem 0.85rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    border-radius: 0.55rem;
    color: var(--text);
    -webkit-tap-highlight-color: transparent;
  }

  .nav a:active {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    flex-shrink: 0;
    border: 1px solid var(--border);
    border-radius: 0.55rem;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: border-color 0.25s, background 0.25s;
  }

  .nav-toggle:hover {
    border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  }

  .nav-toggle__bar {
    display: block;
    width: 1rem;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition:
      transform 0.35s var(--ease-out),
      opacity 0.25s ease;
  }

  .top--nav-open .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .top--nav-open .nav-toggle__bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .top--nav-open .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  section[id] {
    scroll-margin-top: calc(
      4rem + env(safe-area-inset-top, 0px)
    );
  }

  .hero__content {
    padding-top: calc(5rem + env(safe-area-inset-top, 0px));
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.25rem, env(safe-area-inset-right, 0px));
    padding-bottom: calc(4rem + env(safe-area-inset-bottom, 0px));
  }

  .hero__scroll {
    bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  }

  .section {
    padding-left: max(1.15rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.15rem, env(safe-area-inset-right, 0px));
  }

  .footer {
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.25rem, env(safe-area-inset-right, 0px));
    padding-bottom: calc(2rem + env(safe-area-inset-bottom, 0px));
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body::before {
    opacity: 0.25;
  }
}