/* ===== Reset léger & layout global ===== */

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #111827 0, #020617 45%, #000 100%);
  color: #e5e7eb;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Bandeau global POPARNASSUS ===== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  background: rgba(2, 6, 23, 0.98);
  border-bottom: 1px solid rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 72px;
}

.site-title {
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-size: 0.8rem;
  font-weight: 700;
  color: #7dd3fc;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.6);
  background: radial-gradient(circle at 30% 0, #0ea5e9, #1e293b 60%);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.7);
  text-align: center;
}

.site-title:hover {
  color: #f9fafb;
  border-color: rgba(125, 211, 252, 0.9);
}

/* ===== Page container ===== */

.page {
  flex: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.2rem 1.4rem 3.2rem;
}

/* ===== Hero ===== */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
  gap: 2.3rem;
  align-items: center;
  margin-bottom: 3rem;
}

.hero-text {
  min-width: 0;
}

.hero-kicker {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 0.4rem;
}

.hero-title {
  font-size: clamp(2.1rem, 2.7vw + 1.5rem, 3.1rem);
  line-height: 1.05;
  margin: 0 0 0.8rem;
}

.hero-title span {
  display: block;
  color: #c7d2fe;
  text-shadow: 0 0 24px rgba(129, 140, 248, 0.85);
}

.hero-sub {
  font-size: 0.98rem;
  color: #cbd5f5;
  max-width: 36rem;
  margin-bottom: 1.5rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.6rem;
}

.chip {
  font-size: 0.75rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: rgba(15, 23, 42, 0.9);
  white-space: nowrap;
}

.chip-accent {
  border-color: rgba(129, 140, 248, 0.8);
  background: rgba(79, 70, 229, 0.25);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.18s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #0ea5e9);
  color: #f9fafb;
  box-shadow: 0 18px 30px rgba(37, 99, 235, 0.6);
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 24px 40px rgba(37, 99, 235, 0.8);
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  border-color: rgba(148, 163, 184, 0.7);
}

.btn-ghost:hover {
  border-color: #6366f1;
}

/* ===== Hero card ===== */

.hero-card {
  border-radius: 1.3rem;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.15), transparent 60%),
    radial-gradient(circle at bottom right, rgba(129, 140, 248, 0.22), transparent 60%),
    #020617;
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.7);
  padding: 1.2rem 1.3rem 1.1rem;
  min-width: 0;
}

.card-title {
  font-size: 1.05rem;
  margin: 0 0 0.4rem;
}

.card-sub {
  font-size: 0.86rem;
  color: #cbd5f5;
  margin: 0 0 0.9rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.metric {
  padding: 0.6rem 0.7rem;
  border-radius: 0.9rem;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(31, 41, 55, 0.95);
  font-size: 0.78rem;
}

.metric-label {
  color: #9ca3af;
  margin: 0 0 0.12rem;
}

.metric-value {
  font-weight: 500;
  color: #e5e7eb;
  margin: 0;
}

/* ===== Sections génériques ===== */

.section {
  margin-bottom: 2.8rem;
}

.section-header {
  max-width: 52rem;
  margin-bottom: 1.4rem;
}

.section-kicker {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 0.35rem;
}

.section-title {
  font-size: 1.35rem;
  margin: 0 0 0.45rem;
}

.section-subtitle {
  font-size: 0.92rem;
  color: #cbd5f5;
  margin: 0;
}

/* ===== Cartes & grilles ===== */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: rgba(2, 8, 23, 0.98);
  border-radius: 1.2rem;
  border: 1px solid #111827;
  padding: 1rem 1rem 0.9rem;
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.65);
  font-size: 0.88rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.card ul {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
}

.card ul li {
  margin-bottom: 0.25rem;
  color: #e5e7eb;
}

.card ul li::before {
  content: "•";
  color: #6366f1;
  margin-right: 0.35rem;
}

/* ===== Ressources ===== */

.resources-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.resource {
  background: rgba(15, 23, 42, 0.96);
  border-radius: 1rem;
  border: 1px dashed rgba(55, 65, 81, 0.95);
  padding: 0.95rem;
  font-size: 0.86rem;
}

.resource h3 {
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
}

.resource p {
  margin: 0 0 0.5rem;
  color: #d1d5db;
}

.resource a {
  color: #a5b4fc;
  font-size: 0.8rem;
  text-decoration: none;
}

.resource a:hover {
  text-decoration: underline;
}

/* ===== README ===== */

.section-readme {
  margin-top: 3rem;
}

.readme-container {
  padding: 1.1rem 1.2rem;
  border-radius: 1.1rem;
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(30, 64, 175, 0.85);
  font-size: 0.9rem;
  line-height: 1.55;
  max-width: 100%;
  overflow-x: auto;
}

.readme-container h1,
.readme-container h2,
.readme-container h3,
.readme-container h4 {
  margin-top: 1.1rem;
  margin-bottom: 0.4rem;
}

.readme-container p {
  margin: 0.4rem 0;
}

.readme-container code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 0.85em;
  background: rgba(15, 23, 42, 0.9);
  padding: 0.15rem 0.3rem;
  border-radius: 0.3rem;
}

.readme-container pre {
  padding: 0.6rem 0.7rem;
  border-radius: 0.6rem;
  background: #020617;
  overflow-x: auto;
}

/* ===== Footer ===== */

.site-footer {
  border-top: 1px solid rgba(15, 23, 42, 0.95);
  padding: 1rem 1.4rem 1.4rem;
  font-size: 0.78rem;
  color: #9ca3af;
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ===== Responsif ===== */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-card {
    order: -1;
  }

  .cards-grid,
  .resources-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page {
    padding-top: 1.8rem;
  }
}

@media (max-width: 520px) {
  .site-header {
    height: 68px;
  }

  .site-title {
    letter-spacing: 0.24em;
    font-size: 0.78rem;
    padding-inline: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}