/* DiaLuna. One stylesheet, system fonts, no framework: the site has to be as fast as we promise. */

:root {
  --bg: #fbfaff;
  --bg-alt: #f3f0fb;
  --surface: #ffffff;
  --text: #1c1530;
  --muted: #5d5670;
  --border: #e4def3;
  --accent: #5b21b6;
  --accent-strong: #4c1d95;
  --accent-soft: #ede7fb;
  --on-accent: #ffffff;
  --ok: #166534;
  --danger: #b42318;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(28 21 48 / 6%), 0 8px 24px rgb(28 21 48 / 6%);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #110d1c;
    --bg-alt: #171226;
    --surface: #1d1730;
    --text: #f1edfa;
    --muted: #b3aac8;
    --border: #2f2648;
    --accent: #a78bfa;
    --accent-strong: #c4b5fd;
    --accent-soft: #2a2146;
    --on-accent: #160f29;
    --ok: #86efac;
    --danger: #fca5a5;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 var(--font);
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}
h1 {
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  letter-spacing: -0.025em;
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}
h3 {
  font-size: 1.15rem;
}
p {
  margin: 0 0 1em;
}
a {
  color: var(--accent);
  text-underline-offset: 3px;
}
a:hover {
  color: var(--accent-strong);
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.wrap {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}
.wrap.narrow {
  width: min(760px, 100% - 32px);
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--surface);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 10;
}
.skip:focus {
  left: 8px;
}

/* ---- Buttons ---------------------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border: 2px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font: 600 1rem/1 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.15s,
    transform 0.15s;
}
.button:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--on-accent);
}
.button:active {
  transform: translateY(1px);
}
.button.ghost {
  background: transparent;
  color: var(--accent);
}
.button.ghost:hover {
  background: var(--accent-soft);
  color: var(--accent-strong);
}
.button.small {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.95rem;
}
.button[disabled] {
  opacity: 0.6;
  cursor: progress;
}

/* ---- Header and footer ------------------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 1.1rem;
}
.mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 800;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.site-header nav > a:not(.button) {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}
.site-header nav > a:not(.button):hover {
  color: var(--text);
}
@media (max-width: 720px) {
  .site-header nav > a:not(.button) {
    display: none;
  }
}

/* FR | EN: both languages in a pill, the current one filled. Always visible, phones included. */
.langs {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.langs a {
  min-width: 40px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-align: center;
  text-decoration: none;
}
.langs a:hover {
  color: var(--text);
}
.langs a[aria-current='page'] {
  background: var(--accent);
  color: var(--on-accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
  padding: 12px 0;
}
.site-footer p {
  margin: 0;
}
.site-footer nav {
  display: flex;
  gap: 18px;
}
@media (max-width: 560px) {
  .site-footer .bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }
}

/* ---- Hero ------------------------------------------------------------------------------------- */
.hero {
  padding: clamp(40px, 8vw, 96px) 0 clamp(40px, 6vw, 72px);
  background: radial-gradient(60% 70% at 85% 10%, var(--accent-soft), transparent 70%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-art {
    max-width: 420px;
  }
}
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}
.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38em;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.facts strong {
  color: var(--text);
}
.hero-art {
  margin: 0;
}
.hero-art svg {
  width: 100%;
  height: auto;
  display: block;
}
.art-frame {
  fill: var(--surface);
  stroke: var(--border);
  stroke-width: 2;
  filter: drop-shadow(0 10px 24px rgb(28 21 48 / 12%));
}
.art-top {
  fill: var(--bg-alt);
}
.art-dot {
  fill: var(--border);
}
.art-ink {
  fill: var(--text);
  opacity: 0.85;
}
.art-soft {
  fill: var(--border);
}
.art-tint {
  fill: var(--accent-soft);
}
.art-accent {
  fill: var(--accent);
}

/* ---- Sections and cards ----------------------------------------------------------------------- */
.section {
  padding: clamp(48px, 8vw, 88px) 0;
}
/* Links to #offres, #contact… stop below the sticky header, not under it. */
section[id] {
  scroll-margin-top: 64px;
}
.section.alt {
  background: var(--bg-alt);
}
.section-lead {
  color: var(--muted);
  max-width: 44em;
  margin-bottom: 32px;
}
.cards {
  display: grid;
  gap: 20px;
}
.cards.three {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.card .button {
  margin-top: auto;
}
.card.featured {
  border: 2px solid var(--accent);
}
.cards.plain > div h3 {
  margin-top: 0;
}
.cards.plain p {
  color: var(--muted);
}
.price {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.price span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
}
.ticks {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.ticks li {
  position: relative;
  padding-left: 28px;
  margin: 8px 0;
}
.ticks li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 0.45em;
  width: 14px;
  height: 8px;
  border-left: 3px solid var(--accent);
  border-bottom: 3px solid var(--accent);
  transform: rotate(-45deg);
}
.tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 999px;
  padding: 2px 12px;
  font-size: 0.85rem;
  font-weight: 600;
}
.card p:not(.tag, .price) {
  color: var(--muted);
}
.more {
  margin-top: 28px;
  color: var(--muted);
}

.steps {
  list-style: none;
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  padding: 0;
  margin: 32px 0 0;
}
.steps li {
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 800;
  margin-bottom: 14px;
}
.steps p {
  color: var(--muted);
}

details {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
}
details p {
  color: var(--muted);
  margin: 10px 0 0;
}

/* ---- Contact form ----------------------------------------------------------------------------- */
.contact {
  display: grid;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(20px, 4vw, 32px);
  box-shadow: var(--shadow);
}
.contact .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 560px) {
  .contact .row {
    grid-template-columns: 1fr;
  }
}
.contact label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}
.contact input,
.contact select,
.contact textarea {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.4 var(--font);
}
.contact textarea {
  resize: vertical;
}
.contact input:focus,
.contact select:focus,
.contact textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.contact .button {
  justify-self: start;
}
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-status {
  margin: 0;
  min-height: 1.6em;
}
.form-status.ok {
  color: var(--ok);
  font-weight: 600;
}
.form-status.error {
  color: var(--danger);
  font-weight: 600;
}
.fine {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

/* ---- Simple pages (merci, mentions légales, 404) ----------------------------------------------- */
.page {
  padding: clamp(40px, 8vw, 88px) 0;
}
.page h2 {
  font-size: 1.3rem;
  margin-top: 1.6em;
}
.page p,
.page li {
  color: var(--muted);
}
main.wrap.narrow {
  padding: 64px 0;
}
.spaced {
  margin-top: 32px;
}