/* Pianzo Lab. Page autonome. Thème sombre par défaut.
   Le bouton de thème lit la même clé que le site (pianzo-theme). */

:root {
  color-scheme: dark;
  --bg: #0c0b09;
  --bg-raise: #141310;
  --ink: #f4f0e8;
  --muted: #c9c2b6;
  --faint: #a39b8e;
  --line: rgba(244, 240, 232, 0.14);
  --card: rgba(20, 19, 16, 0.72);
  --accent: #e4c98a;
  --accent-ink: #e4c98a;
  --green: #8fd0ae;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --serif: "Fraunces", "Iowan Old Style", Palatino, Georgia, serif;
  --sans: "Space Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --max: 1120px;
  --gutter: clamp(1.15rem, 4vw, 2rem);
}

html.light {
  color-scheme: light;
  --bg: #f6f3ec;
  --bg-raise: #fffdf8;
  --ink: #1c1915;
  --muted: #44403a;
  --faint: #5c564c;
  --line: rgba(28, 25, 21, 0.14);
  --card: rgba(255, 253, 248, 0.86);
  --accent: #8a5a16;
  --accent-ink: #6e4710;
  --green: #0f6b48;
  --shadow: 0 18px 40px rgba(28, 25, 21, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

:focus { outline: none; }

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

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 30;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--bg);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
}

.skip:focus { top: 1rem; }

.glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 42% at 88% -8%, rgba(228, 201, 138, 0.16), transparent 62%),
    radial-gradient(ellipse 42% 36% at -6% 88%, rgba(143, 208, 174, 0.08), transparent 60%);
}

header,
main,
footer { position: relative; z-index: 1; }

.wrap {
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.kicker {
  margin: 0 0 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

h1, h2, .serif {
  font-family: var(--serif);
  font-weight: 560;
  letter-spacing: -0.03em;
  line-height: 1.02;
  text-wrap: balance;
}

h1 {
  margin: 0;
  font-size: clamp(2.15rem, 4.6vw, 3.9rem);
  line-height: 1.08;
}

.hero h2 { margin-top: 0.85rem; }

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
}

.lede, .section-intro {
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.55;
  max-width: 40rem;
}

.lede { margin: 1.4rem 0 0; }

.section-intro { margin: 1rem 0 0; }

header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  min-height: 4.25rem;
  padding-block: 0.7rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
  color: inherit;
}

.lockup-plate { display: inline-flex; line-height: 0; }

.lockup, .hero-lockup { display: block; width: auto; height: auto; }

.brand .lockup { height: 48px; }

.hero-plate { margin: 0 0 1.6rem; }

.hero-lockup { height: clamp(88px, 14vw, 128px); }

html.light .lockup-plate {
  background: #10151f;
  border-radius: 16px;
  padding: 8px 12px;
}

.brand small {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 560;
  color: var(--accent-ink);
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.25rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--ink); }

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-raise);
  color: var(--ink);
  display: grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
}

.theme-toggle svg { width: 18px; height: 18px; }

html:not(.light) .icon-sun,
html.light .icon-moon { display: none; }

.lang-toggle {
  display: flex;
  align-items: center;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.lang-toggle button {
  background: transparent;
  color: var(--muted);
  border: 0;
  min-height: 38px;
  padding: 0 0.75rem;
  border-radius: 999px;
  font: 600 12px/1 var(--sans);
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--ink);
  color: var(--bg);
}

.control {
  margin: 1rem 0 0;
  font-weight: 600;
  color: var(--ink);
}

.out-k {
  margin: 0.15rem 0 0.3rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

.path .out,
.tier .out {
  margin: 0.15rem 0 1rem;
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.55rem, 2.5vw, 2.05rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--ink);
}

.ex {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.vol {
  margin: 0.85rem 0 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent-ink);
}

.routes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.4rem, 3vw, 2.6rem);
  margin-top: clamp(2rem, 4vw, 3.2rem);
}

.route {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.15rem 0 0.2rem;
  border-top: 1px solid var(--line);
  text-decoration: none;
}

.route:hover .to { color: var(--ink); }

.route p { margin: 0; }

.route .letter {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1;
  color: var(--accent-ink);
  margin-bottom: 0.85rem;
}

.route .ask {
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.55rem, 2.3vw, 2rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--ink);
}

.route .to {
  margin-top: auto;
  padding-top: 1.5rem;
  font-weight: 600;
  color: var(--accent-ink);
}

.scenes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.scene {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.55rem 1.35rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: var(--card);
}

.scene h3 {
  margin: 0 0 1.25rem;
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.85rem, 2.4vw, 2.35rem);
  letter-spacing: -0.03em;
  line-height: 1;
}

.ba {
  display: grid;
  gap: 0.28rem;
  margin: 0;
}

.ba + .ba { margin-top: 1.05rem; }

.ba-k {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.ba-v {
  color: var(--muted);
  line-height: 1.4;
}

.ba.after {
  padding: 0.85rem 0.9rem 0.95rem;
  border-radius: 0.95rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.ba.after .ba-k { color: var(--accent-ink); }

.ba.after .ba-v {
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
}

.stamp {
  margin: auto 0 0;
  padding-top: 1.15rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.28rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.bricks {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.4rem, 3vw, 2.4rem);
  margin: clamp(2.2rem, 4vw, 3.2rem) 0 0;
  padding: 0;
}

.bricks li {
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.brick-n {
  margin: 0 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
}

.bricks h3 {
  margin: 0 0 0.55rem;
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.85rem, 2.6vw, 2.45rem);
  letter-spacing: -0.03em;
  line-height: 1;
}

.bricks p { margin: 0; color: var(--muted); }

.faq {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.6rem, 4vw, 3rem) clamp(1.5rem, 4vw, 3.5rem);
  margin: clamp(2rem, 4vw, 3rem) 0 0;
}

.faq div {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.faq dt {
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.faq dd {
  margin: 0.7rem 0 0;
  max-width: 36rem;
  color: var(--muted);
}

.price-month .commit {
  display: inline-block;
  margin-left: 0.35rem;
  font-family: var(--sans);
  font-size: 0.62em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--green);
}

.hero {
  padding: clamp(4.5rem, 10vw, 8rem) 0 clamp(3.5rem, 8vw, 6rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.7fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
}

.hero-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.hero-index a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  text-decoration: none;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
  min-height: 44px;
}

.hero-index .n {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent-ink);
}

.hero-index strong {
  display: block;
  font-weight: 600;
  color: var(--ink);
  font-size: 1rem;
}

.hero-index a > span:last-child > span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  padding: clamp(4rem, 9vw, 7.5rem) 0;
}

.paths, .tiers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.path, .tier {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.6rem 1.4rem 1.45rem;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: var(--card);
  text-decoration: none;
}

.path:hover, .tier:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }

.path .num, .tier .kind {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--accent-ink);
  margin: 0 0 1.1rem;
}

.path h3, .tier h3 {
  margin: 0 0 0.7rem;
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.7rem, 2vw, 2.05rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.path p, .tier p { margin: 0; color: var(--muted); }

.path .go {
  margin-top: auto;
  padding-top: 1.4rem;
  font-size: 0.92rem;
  color: var(--ink);
}

.band {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.band-inner {
  padding: clamp(1.8rem, 4vw, 3rem);
  border-radius: 1.6rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent 46%),
    var(--bg-raise);
}

.band p { margin: 1rem 0 0; max-width: 38rem; color: var(--muted); }

.fomo {
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-bottom: clamp(4.5rem, 9vw, 7rem);
}

.fomo h2 { max-width: 14ch; }

.fomo p { max-width: 28rem; }

.community {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(16rem, 0.8fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: end;
}

.tg-mark {
  width: 28px;
  height: 28px;
  display: block;
  margin-bottom: 1rem;
}

.tg-cta {
  margin: 1.15rem 0 0;
  font-weight: 600;
  color: var(--ink);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

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

.price {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 560;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}

.price-month {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 1.85rem);
  font-weight: 560;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
}

.price-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--faint);
}

.tier ul {
  list-style: none;
  margin: 1.15rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.tier li {
  position: relative;
  padding-left: 0.95rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.tier li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--accent);
}

.tier.featured {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent 42%),
    var(--card);
}

.price-note {
  margin: 1.25rem 0 0;
  color: var(--faint);
  font-size: 0.95rem;
  max-width: 44rem;
}

.talk {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  align-items: center;
}

.talk a {
  color: var(--ink);
  font-weight: 600;
  text-underline-offset: 0.18em;
}

footer {
  border-top: 1px solid var(--line);
  padding: 2.4rem 0 2.8rem;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.25rem 2rem;
}

.foot p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.95rem; }

.legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
}

.legal a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.45rem 0.8rem;
  border-radius: 0.8rem;
  border: 1px solid var(--line);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

.legal a:hover { border-color: var(--accent); color: var(--accent-ink); }

@media (max-width: 980px) {
  .bricks { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .hero-grid,
  .paths,
  .tiers,
  .routes,
  .scenes,
  .faq,
  .community { grid-template-columns: 1fr; }
  .hero-index { margin-top: 0.5rem; }
}

@media (max-width: 640px) {
  .bricks { grid-template-columns: 1fr; }
}

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