/* ==========================================================================
    Presentation Section Start
  ========================================================================== */
.presentation__section {
  background-color: var(--clr-white);
}

/* ==========================================================================
    Intro Section Start
  ========================================================================== */
.intro__section {
  position: relative;
  overflow: hidden;
  margin-bottom: 4rem;
}

.intro__texts {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 3.75rem;
  max-width: 1300px;
  margin: 0 auto;
}

.intro__text {
  opacity: 0;
  transform: translateY(40px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  padding: 2.5rem;
  background: linear-gradient(#fff2, transparent);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 25px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    transform var(--transition-smooth),
    box-shadow var(--transition-smooth),
    background var(--transition-fast);
}

.intro__text:hover {
  transform: translateY(-4px) !important;
  /* box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3); */
  /* background: rgba(255, 255, 255, 0.08); */
}

.intro__text:nth-child(1) {
  animation-delay: 0.1s;
}
.intro__text:nth-child(2) {
  animation-delay: 0.25s;
}
.intro__text:nth-child(3) {
  animation-delay: 0.4s;
}

.intro__text .title {
  color: var(--clr-blue-bell);
  font-size: var(--fs-32);
  text-align: left;
  margin-bottom: 1.5rem;
  position: relative;
  padding-left: 20px;
}

.intro__text .title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    var(--clr-blue-bell),
    var(--clr-alice-blue)
  );
  border-radius: 2px;
}

.intro__text p {
  color: var(--clr-alice-blue);
  font-size: var(--fs-20);
  line-height: 1.8;
  opacity: 0.9;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Intro Section End */

/* ==========================================================================
    Packs Section Start
  ========================================================================== */
.packs__section {
  height: auto;
}

.packs {
  display: flex;
  align-items: flex-start;
  margin: 5rem 0rem 3rem 1.5rem;
  /* align-items: stretch; */
  /* height: fit-content; */
}

/* --- Thèmes par pack (comme ourpacks__shape) --- */
.pack__item {
  height: auto;
  display: flex;
  /* align-items: flex-start; */
  --pack-accent: var(--clr-blue-bell);
  --pack-accent-light: color-mix(in srgb, var(--pack-accent) 55%, white);
  --pack-accent-soft: color-mix(in srgb, var(--pack-accent) 16%, transparent);
  --pack-accent-strong: color-mix(in srgb, var(--pack-accent) 32%, transparent);
}

.pack__item--excellence {
  --pack-accent: var(--clr-automn-leaf);
}

.pack__item--prestige {
  --pack-accent: color-mix(
    in srgb,
    var(--clr-slate-indigo) 72%,
    var(--clr-alice-blue)
  );
}

/* --- Header --- */
.pack__header {
  height: 50rem;
  position: relative;
  background:
    linear-gradient(135deg, var(--pack-accent-strong), transparent 55%),
    rgba(255, 255, 255, 0.04);
  border-top-left-radius: 50px;
  border-top-right-radius: 50px;
  border-bottom-left-radius: 100px;
  border-bottom-right-radius: 10px;
  padding: 2rem 1.25rem;
  cursor: pointer;
  letter-spacing: 0.08em;
  color: var(--clr-alice-blue);
  font-size: var(--fs-16);
  overflow: hidden;

  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  align-items: center;
  justify-content: start;
  gap: 2rem;

  z-index: 1;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.pack__header::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--pack-accent) 25%, transparent),
    color-mix(in srgb, var(--pack-accent) 8%, transparent)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.pack__header:hover::before {
  opacity: 1;
  transform: scale(1.2);
}
.pack__header:hover {
  transform: translateY(-10px);
}

.pack__item.active .pack__header {
  background:
    linear-gradient(
      135deg,
      var(--pack-accent-strong),
      color-mix(in srgb, var(--pack-accent) 22%, transparent)
    ),
    rgba(255, 255, 255, 0.06);
  border: 1px solid color-mix(in srgb, var(--pack-accent) 45%, transparent);
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 color-mix(in srgb, var(--pack-accent) 30%, transparent);
}

.pack__item.active .pack__header::before {
  opacity: 1;
}

/* --- Pastille numéro --- */
.pack__badge {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--pack-accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--pack-accent) 55%, transparent);
  box-shadow: 0 10px 16px 0px rgba(0, 0, 0, 0.35);
  color: var(--pack-accent);
  font-family: var(--ff-title);
  font-size: 1rem;
  font-weight: var(--fw-bold);
  border-radius: 50%;
  z-index: 2;
}

.pack__item.active .pack__badge {
  background: var(--pack-accent);
  box-shadow: 0 10px 16px 0px rgba(0, 0, 0, 0.35);
  color: var(--clr-deep-indigo);
}

/* --- Nom vertical --- */
.pack__name {
  writing-mode: vertical-rl;
  font-family: var(--ff-style);
  font-size: var(--fs-40);
  font-weight: var(--fw-bold);
  letter-spacing: 0.15em;
  color: var(--pack-accent);
  transition: all 0.3s ease;
  transform: translateY(60px);
}

.pack__item.active .pack__content {
  width: 90%;
  max-height: 2000px;
  padding: 1.25rem;
  overflow: hidden;
}

/* Textes */
.pack__item.active .pack__content .pack__text {
  opacity: 1;
  transform: translateX(0);
}

/* Animation stagger */
.pack__item.active .pack__content .pack__text:nth-child(1) {
  transition-delay: 0.1s;
}
.pack__item.active .pack__content .pack__text:nth-child(2) {
  transition-delay: 0.2s;
}
.pack__item.active .pack__content .pack__text:nth-child(3) {
  transition-delay: 0.3s;
}
.pack__item.active .pack__content .pack__text:nth-child(4) {
  transition-delay: 0.4s;
}
.pack__item.active .pack__content .pack__text:nth-child(5) {
  transition-delay: 0.5s;
}
.pack__item.active .pack__content .pack__text:nth-child(6) {
  transition-delay: 0.6s;
}
.pack__item.active .pack__content .pack__text:nth-child(7) {
  transition-delay: 0.7s;
}

/* --- Contenu --- */
.pack__content {
  width: 0;
  height: auto;
  max-height: 0;
  overflow: hidden;
  flex-shrink: 0;
  transition:
    width 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0;
  background:
    linear-gradient(135deg, transparent 55%, var(--pack-accent-strong)),
    rgba(255, 255, 255, 0.04);
  /* border: 1px solid var(--border-light); */
  border-left: none;
  /* border-radius: 30px 50px 50px 0; */
  border-radius: 50px;
  box-shadow: 0 25px 25px rgba(0, 0, 0, 0.25);
}

.pack__content .pack__text {
  padding: 1.25rem 1.5rem;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.6s ease;
  transition-delay: 0s;
}

/* Titre */
.pack__content h1 {
  font-family: var(--ff-title);
  font-size: var(--fs-32);
  color: var(--clr-alice-blue);
  padding-left: 33%;
}
.pack__content h1 span {
  display: block;
  font-family: var(--ff-style);
  font-size: var(--fs-56);
  color: var(--pack-accent);
  margin-left: 2.5rem;
  transform: translateY(-40px);
  background: linear-gradient(135deg, transparent 25%, var(--pack-accent-soft));
  z-index: -10;
  padding: 2rem;
  width: fit-content;
  border-radius: 50%;
}

/* Sous-titre */
.pack__content .pack__text h2 {
  font-size: var(--fs-20);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pack-accent);
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1rem;
}

/* Puce sous-titre */
.pack__content .pack__text h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--pack-accent);
  border-radius: 50%;
}

.pack__content .pack__text p {
  line-height: 1.6;
  color: var(--clr-alice-blue);
  font-weight: 400;
  text-align: justify;
  font-size: var(--fs-20);
}

/* Packs Section End */

/* ========================================================================
  ====== MEDIA BREAKPOINT =================================================
  ========================================================================= */
/* --------------------------------------------- */
/* ---- BREAKPOINT 1024 ------------------------- */
/* --------------------------------------------- */
@media screen and (max-width: 1024px) {
  /* SECTIOn INTRO */

  /* SECTION PACKS Horizontal */
  .packs {
    flex-direction: column;
    height: auto;
    margin: 2rem 0;
    gap: 0.75rem;
  }
  .pack__item {
    flex-direction: column;
  }
  .pack__header {
    height: auto;
    padding-left: 3rem;
    writing-mode: horizontal-tb;
    flex-direction: row;
    gap: 1rem;
  }
  .pack__header:hover {
    transform: translateY(-4px);
  }
  .pack__badge {
    position: static;
    transform: none;
  }
  .pack__name {
    writing-mode: horizontal-tb;
    transform: none;
    font-size: var(--fs-40);
  }
  .pack__content {
    width: 100%;
    height: 100%;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    border-radius: 20px;
    transition:
      opacity 0.4s ease,
      max-height 0.4s ease;
  }

  .pack__item.active .pack__content {
    width: 100%;
    opacity: 1;
    max-height: 2000px;
    padding: 1.25rem;
  }
  .pack__content .pack__text {
    transform: none;
  }
  .pack__content .pack__text:nth-child(n) {
    transition-delay: 0s;
  }
  .pack__item.active .pack__content .pack__text:nth-child(n) {
    transition-delay: 0s;
  }
}

/* --------------------------------------------- */
/* ---- BREAKPOINT 768 ------------------------- */
/* --------------------------------------------- */
@media screen and (max-width: 768px) {
  .pack__item.active .pack__content {
    max-height: 2600px;
  }
}

/* --------------------------------------------- */
/* ---- BREAKPOINT 540 ------------------------- */
/* --------------------------------------------- */
@media screen and (max-width: 540px) {
  /* SECTION INTRO */
  .intro__section {
    padding: 2.5rem 0.5rem;
  }

  .intro__texts {
    gap: 2rem;
  }
  .intro__text {
    padding: 2rem 1.5rem;
  }
  .intro__text .title {
    font-size: var(--fs-28);
  }
  .intro__text p {
    font-size: var(--fs-16);
    opacity: 1;
    text-align: justify;
  }

  /* SECTION PACK */
  .packs__section {
    padding: 4rem 0.5rem;
  }
  .pack__content {
    gap: 0.5rem;
  }
  .pack__content h1 {
    font-size: var(--fs-28);
    padding: 1rem 2rem 0;
    height: auto;
  }
  .pack__content h1 span {
    font-size: var(--fs-40);
  }
  .pack__content .pack__text {
    padding: 0.5rem 0.5rem;
  }
  .pack__name {
    font-size: var(--fs-32);
  }
  .pack__content .pack__text h2 {
    font-size: var(--fs-16);
  }
  .pack__content .pack__text p {
    font-size: var(--fs-16);
  }
}

/* --------------------------------------------- */
/* ---- BREAKPOINT 360 ------------------------- */
/* --------------------------------------------- */
@media screen and (max-width: 360px) {
  .intro__text .title {
    font-size: var(--fs-20);
  }
  .intro__text p {
    font-size: var(--fs-14);
  }

  /* HEADER */
  .pack__header {
    height: 3rem;
  }
  .pack__content {
    padding: 0;
  }
  .pack__content h1 {
    padding: 0 1rem 0;
  }
  .pack__content .pack__text {
    padding: 0.5rem 0;
  }
}