/* ==========================================================================
   IBVB — Composants page d'accueil
   ========================================================================== */

/* ---------- HERO ---------- */
.hero {
  position: relative;
  background: var(--color-ivory);
  padding-top: clamp(3rem, 6vw, 5.5rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2rem;
  }
}
.hero__content { position: relative; z-index: 2; }
.hero h1 {
  font-size: var(--fs-hero);
  letter-spacing: -0.02em;
}
.hero h1 em {
  font-style: normal;
  color: var(--color-indigo);
  position: relative;
}
.hero__lead {
  margin-top: 1.5rem;
  font-size: var(--fs-lead);
  color: var(--color-ink-soft);
  max-width: 46ch;
}
.hero__ctas {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Signature element : ligne de "page ouverte" — motif récurrent du site */
.page-curve {
  position: absolute;
  pointer-events: none;
}
.hero .page-curve--1 {
  width: 520px;
  height: 520px;
  right: -180px;
  top: -120px;
  z-index: 0;
}
.hero .page-curve--2 {
  width: 340px;
  height: 340px;
  right: -60px;
  bottom: -140px;
  z-index: 0;
  opacity: 0.6;
}

.hero__media {
  position: relative;
  z-index: 1;
}
.hero__media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  box-shadow: var(--shadow-card-hover);
  background: linear-gradient(145deg, var(--color-night) 0%, var(--color-indigo) 130%);
}
.hero__media-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero__media-caption {
  position: absolute;
  left: 1.25rem;
  bottom: 1.25rem;
  right: 1.25rem;
  background: rgba(11,17,48,0.55);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-micro);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hero__media-caption .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-cyan);
  flex-shrink: 0;
}

/* placeholder image state (tant qu'aucune photo n'est fournie) */
.media-placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  color: rgba(255,255,255,0.8);
  text-align: center;
  padding: 2rem;
}
.media-placeholder svg { width: 40px; height: 40px; opacity: 0.8; }
.media-placeholder span {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.02em;
  max-width: 22ch;
}

/* ---------- INTRO ---------- */
.intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 900px) {
  .intro { grid-template-columns: 0.85fr 1.15fr; gap: 4rem; }
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 900px) {
  .contact-layout { grid-template-columns: 0.9fr 1.1fr; gap: 4rem; }
}
.intro__figure {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 5/4;
  box-shadow: var(--shadow-card);
  background: var(--color-night-2);
}
.intro__figure img { width: 100%; height: 100%; object-fit: cover; }
.intro__body p { color: var(--color-ink-soft); font-size: 1.05rem; }
.intro__body .lead { color: var(--color-night); font-size: var(--fs-lead); margin-bottom: 1.25rem; }

/* ---------- STATS ---------- */
.stats {
  background: var(--color-night);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3.25rem);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 1.5rem;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
@media (min-width: 768px) {
  .stats { grid-template-columns: repeat(4, 1fr); }
}
.stat {
  position: relative;
  z-index: 1;
}
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 3vw, 2.75rem);
  font-weight: 600;
  color: var(--color-white);
  display: block;
  line-height: 1;
}
.stat__value .unit {
  font-size: 0.5em;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-cyan);
  margin-left: 0.2rem;
}
.stat__label {
  margin-top: 0.6rem;
  font-size: var(--fs-small);
  color: rgba(250,249,246,0.68);
  line-height: 1.4;
}
.stat__note {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-cyan);
  letter-spacing: 0.02em;
}

/* ---------- SECTION HEADING ---------- */
.section-heading {
  max-width: 680px;
  margin-bottom: var(--space-lg);
}
.section-heading--center {
  margin-inline: auto;
  text-align: center;
}
.section-heading h2 { margin-bottom: 1rem; }

.section-heading-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: var(--space-lg);
}
.section-heading-row .section-heading { margin-bottom: 0; }

/* ---------- COURSE CARDS ---------- */
.course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}
@media (min-width: 640px) {
  .course-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .course-grid { grid-template-columns: repeat(3, 1fr); }
}

.course-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  height: 100%;
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}
.course-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.course-card__number {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--color-cyan);
  line-height: 1;
}
.course-card__category {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-indigo);
  background: var(--color-cyan-soft);
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
}
.teacher-card__fonction {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-indigo);
  background: var(--color-cyan-soft);
  padding: 0.35rem 0.75rem;
  border-radius: 14px;
  white-space: normal;
  line-height: 1.4;
  max-width: 100%;
}
.course-card h3 {
  font-size: 1.2rem;
  line-height: 1.3;
}
.course-card p {
  color: var(--color-ink-soft);
  font-size: var(--fs-small);
  flex-grow: 1;
}
.course-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-indigo);
  margin-top: 0.25rem;
}
.course-card__link .arrow { transition: transform 0.25s var(--ease); }
.course-card:hover .course-card__link .arrow { transform: translateX(4px); }

.program-footer {
  margin-top: var(--space-lg);
  display: flex;
  justify-content: center;
}

/* ---------- STEPS (comment ça fonctionne) ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
}
@media (min-width: 800px) {
  .steps-grid { grid-template-columns: repeat(4, 1fr); }
}
.step {
  background: var(--color-white);
  padding: 2rem 1.6rem;
  position: relative;
}
.step__icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--color-cyan-soft);
  color: var(--color-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.step__icon svg { width: 22px; height: 22px; }
.step__index {
  position: absolute;
  top: 1.6rem; right: 1.6rem;
  font-family: var(--font-display);
  color: var(--color-line);
  font-size: 1.6rem;
  font-weight: 600;
}
.step h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.step p { color: var(--color-ink-soft); font-size: var(--fs-small); }

/* ---------- MISSION ---------- */
.mission {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--color-night) 0%, #1B1F52 100%);
  padding: clamp(2.5rem, 6vw, 5rem);
  color: var(--color-white);
  overflow: hidden;
}
.mission__quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.45;
  max-width: 780px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.mission__ref {
  margin-top: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--fs-small);
  color: rgba(250,249,246,0.7);
}
.mission__ref .rule { width: 28px; height: 1px; background: var(--color-cyan); }

/* ---------- TEACHERS PREVIEW ---------- */
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 700px) {
  .teacher-grid { grid-template-columns: repeat(4, 1fr); }
}
.teacher-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.1rem;
  text-align: center;
}
.teacher-card__photo {
  width: 68px; height: 68px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  background: var(--color-ivory-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-soft);
  border: 1px dashed var(--color-line);
  overflow: hidden;
}
.teacher-card__photo.has-photo {
  border: 1px solid var(--color-line);
}
.teacher-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.teacher-card__photo svg { width: 26px; height: 26px; opacity: 0.5; }
.teacher-card h3 { font-size: 0.98rem; margin-bottom: 0.2rem; }
.teacher-card p {
  font-size: var(--fs-micro);
  color: var(--color-ink-soft);
}

/* ---------- CTA FINAL ---------- */
.cta-final {
  text-align: center;
  padding: clamp(3rem, 6vw, 5rem) var(--container-pad);
  position: relative;
}
.cta-final h2 {
  max-width: 20ch;
  margin-inline: auto;
}
.cta-final .lead {
  margin-inline: auto;
  margin-top: 1rem;
}
.cta-final__ctas {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}