/* components.css — botones, hexagrama, líneas, texto split. Compartido entre tools. */

/* ---------- Botones ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-style: italic;
  letter-spacing: 0.04em;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  transition: color var(--t-fast) var(--ease-out-soft),
              transform var(--t-fast) var(--ease-out-soft);
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--ink);
  pointer-events: none;
  transition: transform var(--t-medium) var(--ease-out-soft);
  z-index: -1;
}

.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { color: var(--ink); }
.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform-origin: bottom center;
  transform: scaleY(0);
  transition: transform var(--t-medium) var(--ease-out-soft);
  z-index: -1;
}
.btn--primary:hover         { color: var(--paper); }
.btn--primary:hover::after  { transform: scaleY(1); }

.btn--ghost {
  border: 1px dashed var(--ink-faded);
  color: var(--ink-soft);
}
.btn--ghost::before { display: none; }
.btn--ghost:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.btn[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.btn__shimmer {
  position: absolute;
  top: 0; left: -100%;
  width: 50%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--accent) 30%, transparent) 50%,
    transparent 100%
  );
  pointer-events: none;
  animation: shimmer 3s var(--ease-breath) infinite;
}

@keyframes shimmer {
  0%        { left: -100%; }
  60%, 100% { left:  200%; }
}

/* ---------- Hexagrama y líneas ---------- */
.hexagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: stretch;
}

.hexagram__line {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  position: relative;
}

.hexagram__line--empty::before {
  content: "";
  display: block;
  width: 220px;
  height: 1px;
  border-top: 1px dashed rgba(26, 26, 26, 0.15);
}

.iching-line {
  width: 220px;
  height: 28px;
  overflow: visible;
}

.iching-line .line-segment {
  stroke: var(--ink);
  stroke-width: 10;
  stroke-linecap: butt;
  fill: none;
}

.iching-line .line-mutable-mark {
  fill: var(--accent);
  stroke: var(--accent-soft);
  stroke-width: 0.5;
}

/* ---------- Texto partido por letra ---------- */
[data-split] {
  display: inline;
}
.split-word {
  display: inline-block;
  white-space: nowrap;
}
.split-letter {
  display: inline-block;
}

/* ---------- Form fields (input, textarea) ---------- */
.field {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faded);
}

.field__input {
  width: 100%;
  padding: 0.6rem 0.4rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-style: italic;
  border-bottom: 1px solid var(--ink-faded);
  caret-color: var(--accent);
  transition: border-color var(--t-fast) var(--ease-out-soft);
}

.field__input::placeholder {
  color: var(--ink-faded);
  font-style: italic;
}

.field:focus-within .field__input {
  border-color: var(--accent);
}

/* ---------- Tabs ---------- */
.tabs {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--ink-faded);
}

.tabs__btn {
  padding: 0.5rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faded);
  border-right: 1px solid var(--ink-faded);
  transition: color var(--t-fast), background var(--t-fast);
}
.tabs__btn:last-child { border-right: 0; }
.tabs__btn[aria-selected="true"] {
  color: var(--paper);
  background: var(--ink);
}
.tabs__btn:not([aria-selected="true"]):hover {
  color: var(--ink);
}