/* ============================================================
   Tweaks panel — bottom-right floating control
   ============================================================ */

.c-tweaks {
  position: fixed;
  right: var(--s-5);
  bottom: var(--s-5);
  z-index: var(--z-tweaks);
  width: 320px;
  max-width: calc(100vw - var(--s-8));
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  transform: translateY(8px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--t-base) var(--ease-out),
              opacity var(--t-base) var(--ease-out);
}

.c-tweaks.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.c-tweaks__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-soft);
}

.c-tweaks__title {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text-strong);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.c-tweaks__close {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.c-tweaks__close:hover { background: var(--gray-100); color: var(--color-text-strong); }

.c-tweaks__body {
  padding: var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  max-height: 60vh;
  overflow-y: auto;
}

.c-tweaks__group {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}

.c-tweaks__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.c-tweaks__label span:last-child {
  color: var(--color-text-strong);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
}

.c-tweaks__swatches {
  display: flex;
  gap: var(--s-2);
}

.c-tweaks__swatch {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform var(--t-fast) var(--ease-out);
}
.c-tweaks__swatch:hover { transform: scale(1.08); }
.c-tweaks__swatch[aria-pressed="true"] {
  border-color: var(--color-text-strong);
  box-shadow: 0 0 0 2px var(--color-bg-elevated);
}

.c-tweaks__seg {
  display: inline-flex;
  background: var(--gray-50);
  border-radius: var(--radius-pill);
  padding: 3px;
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .c-tweaks__seg { background: rgba(255,255,255,0.06); }

.c-tweaks__seg button {
  flex: 1;
  height: 30px;
  padding-inline: var(--s-3);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  transition: background var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out);
}

.c-tweaks__seg button[aria-pressed="true"] {
  background: var(--color-bg-elevated);
  color: var(--color-text-strong);
  box-shadow: var(--shadow-xs);
}

.c-tweaks__slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--gray-100);
  outline: none;
}
[data-theme="dark"] .c-tweaks__slider { background: rgba(255,255,255,0.12); }

.c-tweaks__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--brand-red);
  cursor: pointer;
  border: 2px solid var(--color-bg-elevated);
  box-shadow: var(--shadow-sm);
}

.c-tweaks__slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--brand-red);
  cursor: pointer;
  border: 2px solid var(--color-bg-elevated);
}

/* Toolbar pill (always shown if tweaks mode dismissed) */
.c-tweaks-toggle {
  position: fixed;
  right: var(--s-5);
  bottom: var(--s-5);
  z-index: var(--z-tweaks);
  display: none;
  align-items: center;
  gap: var(--s-2);
  height: 40px;
  padding: 0 var(--s-4);
  border-radius: var(--radius-pill);
  background: var(--brand-black);
  color: var(--white);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  box-shadow: var(--shadow-lg);
}