/* =====================================================
   PRESENTATION.CSS — Styles spécifiques à la page Présentation
   Jubilé des 30 Ans — Madame Chantal BIYA
   Version 1.0
   ===================================================== */

/* -------- 1. HERO PRÉSENTATION -------- */
.presentation-hero {
  position: relative;
  height: 80vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-black);
}
.presentation-hero__media {
  position: absolute;
  inset: 0;
}
.presentation-hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: heroZoom 18s var(--ease-soft) forwards;
}
.presentation-hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}
.presentation-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
  max-width: 900px;
}
.presentation-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.presentation-hero__subtitle {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1rem, 1.6vw, 1.5rem);
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.05em;
  line-height: 1.6;
  margin-bottom: 40px;
}
.presentation-hero__scroll {
  display: flex;
  justify-content: center;
}

/* -------- 2. LETTRE DE LA PREMIÈRE DAME -------- */
.lettre {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}
.lettre__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.lettre__header {
  text-align: center;
  margin-bottom: 60px;
}
.lettre__subtitle {
  font-size: 1.05rem;
  color: var(--color-grey-mid);
  margin-top: 8px;
}
.lettre__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.lettre__document {
  position: relative;
}
.lettre__document-wrapper {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border-bottom: 4px solid var(--color-gold);
}
.lettre__document-wrapper img {
  width: 100%;
  display: block;
}
.lettre__badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(17,17,17,0.85);
  backdrop-filter: blur(8px);
  padding: 10px 16px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  border: 1px solid var(--color-gold);
}
.lettre__badge-icon { font-size: 1.2rem; }
.lettre__badge-text {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lettre__actions {
  display: flex;
  gap: 20px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.lettre__btn {
  min-width: 180px;
}
.lettre__info {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.lettre__info-card {
  padding: 24px 28px;
  background: var(--color-grey-light);
  border-radius: 4px;
  border-left: 4px solid var(--color-gold);
  transition: transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast) var(--ease-soft);
}
.lettre__info-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-soft);
}
.lettre__info-number {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-purple);
  margin-bottom: 6px;
}
.lettre__info-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  text-transform: uppercase;
}
.lettre__info-text {
  font-size: 0.92rem;
  color: var(--color-grey-mid);
  line-height: 1.7;
}

/* -------- 3. NOTE CONCEPTUELLE -------- */
.concept {
  padding: var(--section-padding) 0;
  background: var(--color-grey-light);
}
.concept__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.concept__header {
  text-align: center;
  margin-bottom: 60px;
}
.concept__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 60px;
}
.concept__block {
  background: var(--color-white);
  padding: 34px 28px;
  border-radius: 4px;
  box-shadow: var(--shadow-soft);
  border-bottom: 4px solid var(--color-gold);
  transition: transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast) var(--ease-soft);
}
.concept__block:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-bottom-color: var(--color-purple);
}
.concept__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
}
.concept__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.concept__text {
  font-size: 0.92rem;
  color: var(--color-grey-mid);
  line-height: 1.7;
}
.concept__text strong {
  color: var(--color-ink);
}
.concept__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  background: var(--color-black);
  padding: 50px 40px;
  border-radius: 4px;
  text-align: center;
}
.concept__stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.concept__stat-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.7);
  margin-top: 6px;
}

/* -------- 4. MESSAGE À LA JEUNESSE -------- */
.message-jeunesse {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}
.message-jeunesse__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.message-jeunesse__header {
  text-align: center;
  margin-bottom: 60px;
}
.message-jeunesse__content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.message-jeunesse__document {
  position: relative;
}
.message-jeunesse__document-wrapper {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border-bottom: 4px solid var(--color-gold);
}
.message-jeunesse__document-wrapper img {
  width: 100%;
  display: block;
}
.message-jeunesse__zoom-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: rgba(17,17,17,0.85);
  backdrop-filter: blur(8px);
  padding: 12px 18px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  border: 1px solid var(--color-gold);
}
.message-jeunesse__zoom-icon { font-size: 1.2rem; }
.message-jeunesse__zoom-text {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.message-jeunesse__quote {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.8;
  color: var(--color-ink);
  padding: 20px 0 0 28px;
  border-left: 4px solid var(--color-gold);
  margin-bottom: 24px;
}
.message-jeunesse__quote-highlight {
  color: var(--color-purple);
  font-weight: 700;
}
.message-jeunesse__footer {
  margin-top: 16px;
  font-style: normal;
  font-family: var(--font-text);
  font-size: 0.95rem;
  color: var(--color-grey-mid);
}
.message-jeunesse__footer strong {
  color: var(--color-ink);
}
.message-jeunesse__footer span {
  display: block;
  font-size: 0.8rem;
  color: var(--color-purple);
  margin-top: 4px;
}
.message-jeunesse__actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.message-jeunesse__keywords {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.message-jeunesse__keyword {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-purple);
  background: var(--color-purple-soft);
  padding: 4px 14px;
  border-radius: 20px;
}

/* -------- 5. RÉGIONS APERÇU -------- */
.regions-preview {
  padding: var(--section-padding) 0;
  background: var(--color-grey-light);
}
.regions-preview__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  text-align: center;
}
.regions-preview__header {
  margin-bottom: 50px;
}
.regions-preview__subtitle {
  font-size: 1.05rem;
  color: var(--color-grey-mid);
  margin-top: 10px;
}
.regions-preview__map {
  max-width: 700px;
  margin: 0 auto;
}
.regions-preview__svg {
  width: 100%;
  height: auto;
  display: block;
}
.region-preview {
  fill: var(--color-gold);
  stroke: var(--color-white);
  stroke-width: 2;
  transition: fill 0.3s ease;
  cursor: default;
}
.region-preview:hover {
  fill: var(--color-purple) !important;
}
.region-preview__label {
  font-family: var(--font-display);
  font-size: 0.5rem;
  font-weight: 700;
  fill: var(--color-white);
  text-anchor: middle;
  pointer-events: none;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.regions-preview__legend {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 20px;
}
.regions-preview__legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-grey-mid);
}
.regions-preview__legend-color {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--color-gold);
  border: 1px solid rgba(17,17,17,0.1);
}
.regions-preview__cta {
  margin-top: 50px;
}

/* -------- 6. CTA FINAL -------- */
.cta-presentation {
  padding: var(--section-padding) 0;
  background: var(--color-black);
  position: relative;
  overflow: hidden;
}
.cta-presentation::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(178,66,144,0.12), transparent 70%);
  border-radius: 50%;
}
.cta-presentation::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(208,37,42,0.08), transparent 70%);
  border-radius: 50%;
}
.cta-presentation__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}
.cta-presentation__content {
  text-align: center;
  color: var(--color-white);
  max-width: 780px;
  margin: 0 auto;
}
.cta-presentation__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.2;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.cta-presentation__title .highlight-gold {
  color: var(--color-gold);
}
.cta-presentation__text {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
  line-height: 1.8;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* -------- RESPONSIVE PRÉSENTATION -------- */
@media (max-width: 1024px) {
  .lettre__content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .concept__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .message-jeunesse__content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .concept__stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .presentation-hero {
    min-height: 80vh;
  }
  .presentation-hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  .presentation-hero__subtitle {
    font-size: 1rem;
  }

  .concept__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 40px;
  }
  .concept__stats {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 30px 20px;
  }
  .concept__stat-number {
    font-size: 2rem;
  }

  .lettre__info-card {
    padding: 18px 20px;
  }
  .lettre__info-card:hover {
    transform: translateX(4px);
  }

  .message-jeunesse__quote {
    font-size: 1.1rem;
    padding: 16px 0 0 16px;
  }
  .message-jeunesse__zoom-badge {
    bottom: 16px;
    right: 16px;
    padding: 8px 14px;
  }
  .message-jeunesse__zoom-text {
    font-size: 0.65rem;
  }

  .region-preview__label {
    font-size: 0.4rem;
  }

  .cta-presentation__title {
    font-size: clamp(1.6rem, 6vw, 2.2rem);
  }
}

@media (max-width: 480px) {
  .concept__stats {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    padding: 20px 16px;
  }
  .concept__stat-number {
    font-size: 1.6rem;
  }
  .concept__stat-label {
    font-size: 0.65rem;
  }

  .lettre__actions {
    flex-direction: column;
    align-items: center;
  }
  .lettre__btn {
    min-width: 100%;
  }

  .message-jeunesse__actions {
    flex-direction: column;
    align-items: center;
  }

  .region-preview__label {
    font-size: 0.35rem;
  }
}