/* ============================================================
   UIVERSE — Colección de componentes UI (estilo uiverse.io)
   Botones, tarjetas, inputs, toggle, loaders, chips, social
   ============================================================ */

/* ---------- Botón primario con brillo deslizante ---------- */
.u-btn {
  --u-bg: var(--accent, #ff4d1c);
  --u-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border: none;
  border-radius: 999px;
  background: var(--u-bg);
  color: var(--u-fg);
  font-family: var(--font-body, inherit);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  box-shadow: 0 8px 20px -8px rgba(255, 77, 28, 0.55);
}

.u-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.u-btn:hover::before {
  left: 120%;
}

.u-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(255, 77, 28, 0.7);
}

.u-btn:active {
  transform: translateY(0);
}

.u-btn .u-btn-arrow {
  transition: transform 0.3s ease;
}

.u-btn:hover .u-btn-arrow {
  transform: translateX(4px);
}

/* ---------- Botón fantasma (outline que se rellena) ---------- */
.u-btn--ghost {
  --u-fg: var(--ink);
  background: transparent;
  box-shadow: inset 0 0 0 2px var(--ink);
  color: var(--u-fg);
}

.u-btn--ghost:hover {
  background: var(--ink);
  color: #f6f0e6;
  box-shadow: inset 0 0 0 2px var(--ink), 0 14px 30px -14px rgba(0, 0, 0, 0.4);
}

.u-btn--light {
  --u-bg: #f6f0e6;
  --u-fg: var(--ink);
  color: var(--ink);
  box-shadow: 0 8px 20px -8px rgba(0, 0, 0, 0.5);
}

/* ---------- Botón de texto con subrayado ---------- */
.u-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 4px;
}

.u-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.u-link:hover::after {
  transform: scaleX(1);
}

.u-link .u-btn-arrow {
  transition: transform 0.3s ease;
}

.u-link:hover .u-btn-arrow {
  transform: translateX(4px);
}

/* ---------- Botones sociales ---------- */
.u-social {
  --social: var(--ink);
  --social-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--social);
  text-decoration: none;
  overflow: hidden;
  transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.u-social svg {
  width: 19px;
  height: 19px;
  z-index: 2;
  transition: transform 0.35s ease;
}

.u-social::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--social);
  transform: scale(0);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.u-social:hover {
  color: var(--social-fg);
  border-color: var(--social);
  transform: translateY(-3px);
}

.u-social:hover::before {
  transform: scale(1);
}

.u-social:hover svg {
  transform: rotateY(360deg);
}

.u-social--instagram { --social: #e1306c; }
.u-social--behance { --social: #1769ff; }
.u-social--dribbble { --social: #ea4c89; }
.u-social--linkedin { --social: #0a66c2; }
.u-social--whatsapp { --social: #25d366; }
.u-social--mail { --social: var(--accent); }

/* ---------- Tarjeta de proyecto ---------- */
.u-card {
  --radius: var(--radius, 20px);
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.u-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px -25px rgba(24, 21, 18, 0.35);
}

.u-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.u-card__media img,
.u-card__media .u-card__placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.u-card:hover .u-card__media img,
.u-card:hover .u-card__media .u-card__placeholder {
  transform: scale(1.06);
}

.u-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(24, 21, 18, 0.35), transparent 45%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.u-card:hover .u-card__media::after {
  opacity: 1;
}

.u-card__view {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.8rem;
  transform: translateY(12px);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.u-card:hover .u-card__view {
  transform: translateY(0);
  opacity: 1;
}

.u-card__body {
  padding: 18px 20px 20px;
}

.u-card__tag {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.u-card__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.u-card__meta {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Placeholder de imagen (gradiente) */
.u-card__placeholder {
  display: flex;
  align-items: flex-end;
  padding: 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.92);
}

/* ---------- Chips / etiquetas ---------- */
.u-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink-soft);
  transition: all 0.25s ease;
  cursor: pointer;
  text-decoration: none;
}

.u-chip:hover,
.u-chip.is-active {
  background: var(--ink);
  color: #f6f0e6;
  border-color: var(--ink);
  transform: translateY(-2px);
}

.u-chip--accent.is-active,
.u-chip--accent:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- Inputs ---------- */
.u-field {
  position: relative;
  display: block;
}

.u-field input,
.u-field textarea {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.u-field textarea {
  resize: vertical;
  min-height: 130px;
}

.u-field input::placeholder,
.u-field textarea::placeholder {
  color: #b3aa9d;
}

.u-field input:focus,
.u-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 77, 28, 0.12);
}

.u-field__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- Toggle switch ---------- */
.u-toggle {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.u-toggle input {
  display: none;
}

.u-toggle .u-toggle__track {
  position: relative;
  width: 52px;
  height: 28px;
  border-radius: 999px;
  background: #d8d0c2;
  transition: background 0.3s ease;
}

.u-toggle .u-toggle__thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.u-toggle input:checked + .u-toggle__track {
  background: var(--accent);
}

.u-toggle input:checked + .u-toggle__track .u-toggle__thumb {
  transform: translateX(24px);
}

/* ---------- Loader / spinner ---------- */
.u-loader {
  --size: 40px;
  --thick: 4px;
  width: var(--size);
  height: var(--size);
  border: var(--thick) solid rgba(24, 21, 18, 0.12);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: u-spin 0.8s linear infinite;
}

@keyframes u-spin {
  to { transform: rotate(360deg); }
}

/* ---------- Preloader de página ---------- */
.u-preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.u-preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.u-preloader .u-loader {
  border-color: rgba(246, 240, 230, 0.18);
  border-top-color: var(--accent);
  --size: 52px;
  --thick: 5px;
}

/* ---------- Barra de progreso de habilidad ---------- */
.u-skill {
  display: block;
}

.u-skill__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.u-skill__name {
  font-weight: 700;
  font-size: 0.95rem;
}

.u-skill__pct {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--accent);
}

.u-skill__bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(24, 21, 18, 0.08);
  overflow: hidden;
}

.u-skill__fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #ff8a5c);
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}