/* =================================================================
   YAAP — Landing pré-lancement
   Stack : HTML + CSS vanilla. Pas de framework.
   Voir DESIGN.md pour la charte complète.
   ================================================================= */

/* ----------------------------------------------------------------
   1. TOKENS
   ---------------------------------------------------------------- */
:root {
  /* Palette stricte — 4 couleurs uniquement */
  --c-noir: #0F1114;
  --c-gold: #D4AF37;
  --c-bone: #F2F2EF;
  --c-anthracite: #2A2D31;

  /* Opacités dérivées (pas de 5e teinte) */
  --c-bone-70: rgba(242, 242, 239, 0.70);
  --c-bone-60: rgba(242, 242, 239, 0.60);
  --c-bone-40: rgba(242, 242, 239, 0.40);
  --c-bone-20: rgba(242, 242, 239, 0.20);
  --c-bone-08: rgba(242, 242, 239, 0.08);
  --c-bone-04: rgba(242, 242, 239, 0.04);
  --c-gold-90: rgba(212, 175, 55, 0.90);
  --c-gold-80: rgba(212, 175, 55, 0.80);

  /* Typo */
  --font-sans: 'Urbanist', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  /* Rythme */
  --container-max: 1280px;
  --container-px: clamp(1.5rem, 5vw, 3rem);
  --section-py: clamp(5rem, 12vh, 9rem);
  --section-py-tight: clamp(4rem, 9vh, 6.5rem);

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----------------------------------------------------------------
   2. RESET MINIMAL
   ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.55;
  background-color: var(--c-noir);
  color: var(--c-bone);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

a { color: inherit; text-decoration: none; transition: color 150ms var(--ease-out); }
a:hover { color: var(--c-gold); }

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

input {
  font-family: inherit;
  color: inherit;
}

/* ----------------------------------------------------------------
   3. UTILITIES
   ---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold-80);
  margin: 0 0 1.25rem 0;
}

.section {
  padding-block: var(--section-py);
}

.section__head { margin-bottom: clamp(3rem, 6vh, 4.5rem); }

.section__title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--c-bone);
  max-width: 18ch;
}

/* ----------------------------------------------------------------
   4. REVEAL (scroll fade-in)
   ---------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ----------------------------------------------------------------
   5. BUTTONS
   ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.75rem;
  border-radius: 0.5rem;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  transition: filter 120ms var(--ease-out), transform 120ms var(--ease-out);
  min-height: 52px;
}

.btn--primary {
  background-color: var(--c-gold);
  color: var(--c-noir);
}
.btn--primary:hover { filter: brightness(0.92); color: var(--c-noir); }
.btn--primary:active { transform: translateY(1px); }
.btn--primary:focus-visible {
  outline: 2px solid var(--c-bone);
  outline-offset: 3px;
}

/* ----------------------------------------------------------------
   6. FORM
   ---------------------------------------------------------------- */
.form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: clamp(2.5rem, 6vh, 4rem);
  max-width: 540px;
  width: 100%;
}

.form__input {
  background: transparent;
  border: 1px solid var(--c-bone-20);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  color: var(--c-bone);
  font-size: 1rem;
  font-weight: 500;
  min-height: 52px;
  transition: border-color 150ms var(--ease-out);
}
.form__input::placeholder { color: var(--c-bone-40); }
.form__input:focus { outline: none; border-color: var(--c-gold); }
.form__input.is-error { border-color: #E0A0A0; }

.form__feedback {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.8125rem;
  color: var(--c-bone-60);
  min-height: 1.25em;
}
.form__feedback.is-error { color: #E0A0A0; }
.form__feedback.is-success { color: var(--c-gold); font-weight: 700; }

/* Hero & CTA centered alignment */
.hero__inner .form,
.cta__inner .form {
  margin-inline: auto;
}

/* ----------------------------------------------------------------
   7. HERO
   ---------------------------------------------------------------- */
.section--hero {
  min-height: 88dvh;
  display: flex;
  align-items: center;
  padding-block: clamp(4rem, 10vh, 7rem);
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__logo {
  width: clamp(140px, 22vw, 200px);
  height: auto;
  margin-bottom: clamp(2.5rem, 6vh, 4rem);
}

.hero__title {
  font-size: clamp(2.75rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--c-bone);
  max-width: 16ch;
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.625rem);
  font-weight: 500;
  color: var(--c-gold-90);
  margin: 1.5rem 0 0 0;
  letter-spacing: -0.01em;
}

.hero__meta {
  margin-top: 2rem;
  margin-bottom: 0;
}

/* ----------------------------------------------------------------
   8. MANIFESTE
   ---------------------------------------------------------------- */
.manifeste__inner {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}

.manifeste__title {
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 2.5rem 0;
  color: var(--c-gold);
}

.manifeste__body {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-bone);
  margin: 0;
}

/* ----------------------------------------------------------------
   9. CREW
   ---------------------------------------------------------------- */
.crew__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.crew__card {
  background-color: var(--c-anthracite);
  border-radius: 1.25rem;
  padding: clamp(1.5rem, 3vw, 2rem);
  transition: transform 200ms var(--ease-out);
}
.crew__card:hover { transform: translateY(-2px); }

.crew__photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 0.75rem;
  background-color: var(--c-bone-04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-bone-20);
  margin-bottom: 1.5rem;
}
.crew__photo svg { width: 40%; height: 40%; }

.crew__name {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-gold);
  margin: 0;
}

.crew__role {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--c-bone);
  margin: 0.25rem 0 0 0;
}

.crew__quote {
  font-size: 0.9375rem;
  font-weight: 500;
  font-style: italic;
  color: var(--c-bone-70);
  margin: 0.75rem 0 0 0;
}

/* ----------------------------------------------------------------
   10. POURQUOI YAAP
   ---------------------------------------------------------------- */
.why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 3.5rem);
}

.why__col {
  display: flex;
  flex-direction: column;
}

.why__icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--c-gold);
  margin-bottom: 1.5rem;
}

.why__title {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--c-bone);
  margin: 0 0 0.75rem 0;
}

.why__body {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-bone-70);
  margin: 0;
  max-width: 38ch;
}

/* ----------------------------------------------------------------
   11. CTA FINAL
   ---------------------------------------------------------------- */
.section--cta {
  position: relative;
  padding-block: clamp(6rem, 14vh, 10rem);
}

.cta__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta__title {
  font-size: clamp(2.75rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--c-gold);
  margin: 0 0 2.5rem 0;
  max-width: 16ch;
}

.cta__body {
  max-width: 540px;
  margin: 0;
  text-align: left;
}

.cta__lead {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-bone);
  margin: 0 0 1rem 0;
}

.cta__body > p {
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-bone);
  margin: 0;
}

.cta__list {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.5rem;
}
.cta__list li {
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-bone-70);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}
.cta__arrow {
  color: var(--c-gold);
  font-weight: 700;
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   12. FOOTER
   ---------------------------------------------------------------- */
.footer {
  background-color: var(--c-anthracite);
  padding-block: clamp(3rem, 7vh, 4.5rem);
}

.footer__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__tagline {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--c-bone);
  letter-spacing: 0.02em;
  margin: 0;
}

.footer__contact {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-bone-70);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.5rem 0.75rem;
}
.footer__contact a {
  transition: color 150ms var(--ease-out);
}

.footer__legal {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--c-bone-60);
  margin: 0.75rem 0 0 0;
}

/* ----------------------------------------------------------------
   13. RESPONSIVE
   ---------------------------------------------------------------- */

/* Tablet : 768px+ */
@media (min-width: 768px) {
  .crew__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

  .form {
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
  }
  .form__submit {
    width: auto;
  }

  .cta__body {
    text-align: center;
  }
  .cta__list li {
    justify-content: flex-start;
  }
}

/* Desktop : 1024px+ */
@media (min-width: 1024px) {
  .why__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
  }
}

/* Touch / hover refinement */
@media (hover: none) {
  .btn--primary:hover { filter: none; }
  .crew__card:hover { transform: none; }
}