/* Reusable components: buttons, cards, nav, chips, pattern band */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-body);
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.btn:hover { opacity: 1; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-black);
  color: var(--color-cream);
}
.btn--primary:hover { background: var(--color-green-dark); color: var(--color-white); }

.btn--ghost {
  background: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}
.btn--ghost:hover { background: var(--color-black); color: var(--color-cream); }

.btn--on-accent { background: var(--color-black); color: var(--color-cream); }
.btn--on-accent:hover { background: var(--color-cream); color: var(--color-black); }

/* ---------- Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-black);
}
.brand img { height: 38px; width: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}
.nav a {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-text);
}
.nav a:hover { color: var(--color-green-dark); opacity: 1; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--color-border);
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center; justify-content: center;
  color: var(--color-black);
  -webkit-appearance: none;
          appearance: none;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  font: inherit;
  padding: 0;
}
.nav-toggle svg { stroke: currentColor; }
.nav-toggle svg { width: 20px; height: 20px; }

@media (max-width: 760px) {
  .nav {
    position: absolute;
    inset: 68px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--container-pad);
    gap: var(--space-3);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
  }
  .nav a { padding-block: var(--space-2); }
  .site-header[data-open="true"] .nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle { display: inline-flex; }
}

/* ---------- Card ---------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }

.card__num {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-green-dark);
  letter-spacing: var(--tracking-display);
}

.card--warm { background: var(--color-cream); border-color: transparent; }
.card--outline { background: transparent; }

/* ---------- Chip ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  font-size: var(--fs-small);
  font-weight: 500;
}
.chip .mark { color: var(--color-green-dark); width: 14px; height: 14px; }

/* ---------- Pattern band ---------- */
.pattern-band {
  background: var(--color-green);
  height: clamp(64px, 10vw, 140px);
  background-image:
    url("../img/pattern-motif.svg"),
    url("../img/pattern-motif.svg");
  background-repeat: repeat;
  background-size: 56px 56px;
  background-position: 0 0, 28px 28px;
  opacity: 0.95;
}
/* The pattern motif SVG uses currentColor — we set a wrapper color via mask effect.
   Fallback: colored via filter to lighten on green. */
.pattern-band {
  background-blend-mode: multiply;
}

/* ---------- Logo mark ---------- */
.logo-mark { color: var(--color-black); width: 1em; height: 1.4em; }