/* ==========================================================================
   OTSPI Custom Styling — Modern, Trustworthy & Accessible
   ========================================================================== */

:root {
  --otspi-primary: #1e40af;
  --otspi-primary-light: #3b82f6;
  --otspi-accent: #0ea5e9;
  --otspi-success: #10b981;
  --otspi-warning: #f59e0b;
  --otspi-card-bg: #ffffff;
  --otspi-card-border: rgba(226, 232, 240, 0.8);
  --otspi-card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
  --otspi-card-hover-shadow: 0 12px 28px -4px rgba(30, 64, 175, 0.12);
}

[data-md-color-scheme="slate"] {
  --otspi-card-bg: #1e293b;
  --otspi-card-border: rgba(51, 65, 85, 0.7);
  --otspi-card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.25);
  --otspi-card-hover-shadow: 0 12px 28px -4px rgba(14, 165, 233, 0.15);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.otspi-hero {
  text-align: center;
  padding: clamp(2rem, 5vw, 3.5rem) 1rem clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 1.5rem;
  position: relative;
}

.otspi-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  font-size: clamp(0.72rem, 2vw, 0.82rem);
  font-weight: 600;
  letter-spacing: 0.025em;
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--otspi-primary-light);
  border: 1px solid rgba(59, 130, 246, 0.25);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  max-width: 100%;
}

.otspi-hero h1 {
  font-size: clamp(1.65rem, 5vw + 0.3rem, 2.5rem) !important;
  font-weight: 800 !important;
  line-height: 1.25 !important;
  margin-bottom: 1rem !important;
  letter-spacing: -0.02em;
}

.otspi-hero .subtitle {
  font-size: clamp(0.95rem, 2vw + 0.2rem, 1.15rem);
  line-height: 1.6;
  max-width: 48rem;
  margin: 0 auto 1.5rem;
  color: var(--md-default-fg-color--light);
}

.otspi-hero-actions {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

@media screen and (max-width: 600px) {
  .otspi-hero-actions {
    flex-direction: column;
    align-items: stretch;
    max-width: 300px;
    margin: 1.25rem auto 0;
  }
  .otspi-hero-actions .md-button {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}

/* --------------------------------------------------------------------------
   Key Stats / Value Pillars
   -------------------------------------------------------------------------- */
.otspi-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0 3.5rem;
}

.otspi-stat-card {
  background: var(--otspi-card-bg);
  border: 1px solid var(--otspi-card-border);
  border-radius: 12px;
  padding: 1.5rem 1.25rem;
  text-align: center;
  box-shadow: var(--otspi-card-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.otspi-stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--otspi-primary-light);
  box-shadow: var(--otspi-card-hover-shadow);
}

.otspi-stat-icon {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.otspi-stat-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--md-default-fg-color);
}

.otspi-stat-desc {
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--md-default-fg-color--light);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Material for MkDocs Cards Customization
   -------------------------------------------------------------------------- */
.md-typeset .grid.cards > ul > li {
  background: var(--otspi-card-bg);
  border: 1px solid var(--otspi-card-border);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--otspi-card-shadow);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.25s ease;
  position: relative;
}

.md-typeset .grid.cards > ul > li:hover {
  transform: translateY(-4px);
  box-shadow: var(--otspi-card-hover-shadow);
  border-color: var(--otspi-primary-light);
}

.md-typeset .grid.cards > ul > li > hr {
  margin: 1rem 0;
  opacity: 0.2;
}

/* --------------------------------------------------------------------------
   Custom Buttons
   -------------------------------------------------------------------------- */
.md-button {
  border-radius: 8px !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em;
  padding: 0.65em 1.5em !important;
  transition: all 0.2s ease !important;
}

.md-button--primary {
  background-color: var(--otspi-primary) !important;
  border-color: var(--otspi-primary) !important;
  box-shadow: 0 4px 14px rgba(30, 64, 175, 0.25) !important;
}

.md-button--primary:hover {
  background-color: var(--otspi-primary-light) !important;
  border-color: var(--otspi-primary-light) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(30, 64, 175, 0.35) !important;
}

/* --------------------------------------------------------------------------
   Mermaid Diagrams & Admonitions
   -------------------------------------------------------------------------- */
.mermaid {
  background: var(--otspi-card-bg);
  border: 1px solid var(--otspi-card-border);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  box-shadow: var(--otspi-card-shadow);
  margin: 1.5rem 0 !important;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.md-typeset .admonition {
  border-radius: 10px;
  box-shadow: var(--otspi-card-shadow);
}

/* --------------------------------------------------------------------------
   Navigation & Header Refinements
   -------------------------------------------------------------------------- */
.md-header {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
}

.md-tabs {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* --------------------------------------------------------------------------
   Corner Ribbon ("En cours de création")
   -------------------------------------------------------------------------- */
.corner-ribbon-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 130px;
  height: 130px;
  overflow: hidden;
  z-index: 10000;
  pointer-events: none;
}

.corner-ribbon {
  position: absolute;
  top: 26px;
  left: -38px;
  width: 165px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  text-align: center;
  font-family: var(--md-text-font, sans-serif);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 24px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
  transform: rotate(-45deg);
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  pointer-events: none;
  user-select: none;
}

/* Header spacing for tablets and intermediate viewports */
@media screen and (max-width: 1220px) {
  .md-header__inner {
    padding-left: 3.5rem;
  }
}

/* Mobile viewports: compact corner ribbon & clear hamburger menu offset */
@media screen and (max-width: 768px) {
  .corner-ribbon-wrapper {
    width: 90px;
    height: 90px;
  }
  .corner-ribbon {
    top: 16px;
    left: -32px;
    width: 125px;
    font-size: 0.50rem;
    line-height: 20px;
    letter-spacing: 0.04em;
  }
  .md-header__inner {
    padding-left: 3.5rem;
  }
}