/* 
   DEPLETION LOOPS — shared design tokens
   Change --dl-radius to adjust button shape everywhere at once:
     999px = fully circular / pill
     14px  = soft rounded rectangle
     0px   = square
    */

:root {
  --dl-radius: 999px;
  --dl-ink: #1c1c1c;
  --dl-bg: #f0f0f0;
  --dl-btn-bg: #e6e3df;
  --dl-btn-ink: #1c1c1c;

  /* soft, muted multi-tone palette — echoes the stagnation interaction */
  --dl-accent-1: #c98f8f; /* dusty rose */
  --dl-accent-1-light: #f0dcdc;
  --dl-accent-2: #9bab8b; /* sage */
  --dl-accent-2-light: #e2e9da;
  --dl-accent-3: #8ba7bf; /* dusty blue */
  --dl-accent-3-light: #dde8ef;
  --dl-accent-4: #a99bc9; /* muted lavender */
  --dl-accent-4-light: #e8e1f1;
  --dl-accent-5: #d9c08f; /* warm sand */
  --dl-accent-5-light: #f5ecd9;

  --dl-glass-bg: rgba(255, 255, 255, 0.55);
  --dl-glass-border: rgba(255, 255, 255, 0.4);
}

/* ---------- Header weight ---------- */
h1, h2 {
  font-weight: 300;
  letter-spacing: 0.01em;
}

/* ---------- Buttons (all pages) ---------- */
button,
.button,
a.button,
.dl-btn {
  border: none;
  border-radius: var(--dl-radius);
  background: var(--dl-btn-bg);
  color: var(--dl-btn-ink);
  padding: 0.85rem 1.75rem;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: background 0.35s ease, color 0.35s ease,
    transform 0.2s ease, box-shadow 0.3s ease;
}

button:hover,
.button:hover,
a.button:hover,
.dl-btn:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
}

/* Each button gets ONE hue from the palette (light tint → full color),
   cycling by position among its siblings. Repeats past the 5th button.
   Change the --dl-accent-* values above and every hue updates together. */
button:nth-of-type(5n+1):hover,
.button:nth-of-type(5n+1):hover,
a.button:nth-of-type(5n+1):hover,
.dl-btn:nth-of-type(5n+1):hover {
  background: linear-gradient(135deg, var(--dl-accent-1-light), var(--dl-accent-1));
}
button:nth-of-type(5n+2):hover,
.button:nth-of-type(5n+2):hover,
a.button:nth-of-type(5n+2):hover,
.dl-btn:nth-of-type(5n+2):hover {
  background: linear-gradient(135deg, var(--dl-accent-2-light), var(--dl-accent-2));
}
button:nth-of-type(5n+3):hover,
.button:nth-of-type(5n+3):hover,
a.button:nth-of-type(5n+3):hover,
.dl-btn:nth-of-type(5n+3):hover {
  background: linear-gradient(135deg, var(--dl-accent-3-light), var(--dl-accent-3));
}
button:nth-of-type(5n+4):hover,
.button:nth-of-type(5n+4):hover,
a.button:nth-of-type(5n+4):hover,
.dl-btn:nth-of-type(5n+4):hover {
  background: linear-gradient(135deg, var(--dl-accent-4-light), var(--dl-accent-4));
}
button:nth-of-type(5n):hover,
.button:nth-of-type(5n):hover,
a.button:nth-of-type(5n):hover,
.dl-btn:nth-of-type(5n):hover {
  background: linear-gradient(135deg, var(--dl-accent-5-light), var(--dl-accent-5));
}

button:focus-visible,
.button:focus-visible,
a.button:focus-visible,
.dl-btn:focus-visible {
  outline: 2px solid var(--dl-accent-2);
  outline-offset: 2px;
}

/* Icon-only circular buttons (home, fullscreen) — fixed square so
   border-radius:50% always reads as a true circle regardless of --dl-radius */
.dl-icon-btn {
  width: 3rem;
  height: 3rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.1rem;
  line-height: 1;
}

/* ---------- Persistent nav: Home (left) / Depletion Loops? (right) ---------- */
.dl-nav {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
  pointer-events: none;
}

.dl-nav a {
  pointer-events: auto;
  text-decoration: none;
  color: var(--dl-ink);
  font-size: 1rem;
  font-weight: 300;
  padding: 0.55rem 1.2rem;
  border-radius: var(--dl-radius);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.dl-nav a:hover {
  background: var(--dl-ink);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------- Depth: glass panel for foreground content ---------- */
.dl-glass {
  background: var(--dl-glass-bg);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--dl-glass-border);
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.14);
}

/* ---------- Depth: subtle grain so flat backgrounds don't feel dead ---------- */
.dl-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.045;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---------- Carousel (About page showcase / booklet images) ---------- */
.dl-carousel {
  position: relative;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
}

.dl-carousel.para {
  padding: 0;
}

.dl-carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.dl-carousel-track img {
  flex: 0 0 100%;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.dl-carousel-prev,
.dl-carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.dl-carousel-prev { left: 0.75rem; }
.dl-carousel-next { right: 0.75rem; }

.dl-carousel-dots {
  position: absolute;
  bottom: 0.85rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}

.dl-carousel-dot {
  width: 0.5rem;
  height: 0.5rem;
  padding: 0;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.6);
  box-shadow: none;
  cursor: pointer;
}

.dl-carousel-dot.active {
  background: var(--dl-accent-1);
}

.dl-carousel-dot:hover {
  transform: none;
  box-shadow: none;
}

.dl-carousel .dl-carousel-prev:hover,
.dl-carousel .dl-carousel-next:hover {
  background: rgba(255, 255, 255, 0.85);
  color: var(--dl-ink);
  transform: translateY(-50%);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.dl-carousel .dl-carousel-dot:hover {
  background: rgba(255, 255, 255, 0.9);
}

/* ---------- Responsive ---------- */
@media only screen and (max-width: 767px) {
  .dl-nav {
    top: 1rem;
    left: 1rem;
    right: 1rem;
  }
  .dl-nav a {
    font-size: 0.85rem;
    padding: 0.45rem 0.9rem;
  }
  button, .button, a.button, .dl-btn {
    padding: 0.7rem 1.3rem;
    font-size: 0.9rem;
  }
  .dl-icon-btn {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

@media only screen and (min-width: 768px) and (max-width: 1023px) {
  .dl-nav a {
    font-size: 0.95rem;
  }
}