/* ==========================================================================
   VortexNeural — Componentes
   Botones, tarjetas, icono-nodo (elemento firma), formulario, breadcrumbs.
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* Botones                                                                 */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 44px;
  padding-inline: var(--space-5);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(155deg, var(--silver-100), var(--silver-300) 55%, var(--silver-500));
  color: var(--text-on-silver);
  box-shadow: var(--shadow-ring);
}

.btn-primary:hover {
  box-shadow: var(--shadow-cta-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--silver-500);
}

.btn-lg {
  height: 48px;
  padding-inline: var(--space-6);
  font-size: 1rem;
}

.link-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--accent-blue-strong);
}

.link-cta svg {
  width: 16px;
  height: 16px;
  transition: transform var(--dur-base) var(--ease-out);
}

.link-cta:hover svg {
  transform: translateX(3px);
}

/* ---------------------------------------------------------------------- */
/* Tarjetas                                                                */
/* ---------------------------------------------------------------------- */

.card {
  position: relative;
  overflow: hidden;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

/* Foco que sigue al cursor — sutil, ligado a la posición real del puntero
   (--spot-x/--spot-y los fija cursor-fx.js). Se omite en táctil y con
   prefers-reduced-motion (ver cursor-fx.js). */
.card::before,
.service-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(260px circle at var(--spot-x, 50%) var(--spot-y, 50%), var(--accent-blue-wash), transparent 70%);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-out);
  pointer-events: none;
}

.card:hover::before,
.service-block:hover::before {
  opacity: 1;
}

.card h3 {
  font-size: var(--fs-h4);
  margin-top: var(--space-4);
}

.card p {
  margin-top: var(--space-2);
  font-size: 0.9375rem;
  color: var(--text-tertiary);
}

/* Icono-nodo: elemento de firma visual, inspirado en los nodos del logo.
   Sustituye a un set de iconos genérico como marcador de lista/tarjeta. */
.node-icon {
  display: inline-block;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1.5px solid var(--accent-blue);
  border-radius: 50%;
  position: relative;
  margin-bottom: var(--space-2);
}

.node-icon::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
}

/* Tarjeta de paso numerado (método de trabajo) */
.step {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.step__num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--silver-300);
}

.step__body h3 {
  font-size: var(--fs-h4);
}

.step__body p {
  margin-top: var(--space-2);
  color: var(--text-tertiary);
}

/* Tarjeta de caso de uso: problema / solución / resultado */
.case-card dt {
  font-size: var(--fs-caption);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-blue-strong);
  margin-top: var(--space-4);
}

.case-card dt:first-of-type {
  margin-top: var(--space-5);
}

.case-card dd {
  margin-top: var(--space-1);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* Lista de principios (Sobre VortexNeural / Método de trabajo) */
.principle-list {
  display: grid;
  gap: var(--space-3);
}

.principle-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.principle-list strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: var(--space-1);
}

.principle-list p {
  color: var(--text-tertiary);
  font-size: 0.9375rem;
}

/* Contenedor de bloques apilados (servicios, casos de uso, método) */
.stacked-blocks {
  padding-block: var(--space-6) var(--space-8);
}

/* Bloque de servicio numerado (servicios.html) */
.service-block {
  position: relative;
  padding-block: var(--space-7);
  border-top: 1px solid var(--border);
}

.service-block:first-of-type {
  border-top: none;
  padding-top: 0;
}

.service-block__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.service-block__head h2 {
  font-size: var(--fs-h3);
}

.service-block p {
  margin-top: var(--space-4);
  max-width: 680px;
  color: var(--text-secondary);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.tag {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-caption);
  color: var(--text-secondary);
}

/* ---------------------------------------------------------------------- */
/* Formulario de contacto                                                  */
/* ---------------------------------------------------------------------- */

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
}

.form-row-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .form-row-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.field .hint {
  font-size: var(--fs-caption);
  color: var(--text-muted);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-width: 0;
  background: var(--control-bg);
  border: 1px solid var(--control-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  min-height: 44px;
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}

.field textarea {
  min-height: 128px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--control-placeholder);
}

.field input:hover,
.field textarea:hover,
.field select:hover {
  background: var(--control-bg-hover);
}

.field input:focus-visible,
.field textarea:focus-visible,
.field select:focus-visible {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-focus);
  outline: none;
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: var(--error);
}

.field-error {
  display: none;
  font-size: 0.8125rem;
  color: var(--error);
}

.field-error.is-visible {
  display: block;
}

.field input[type="file"] {
  padding: var(--space-2) var(--space-3);
  background: var(--control-bg);
}

.checkbox-field {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.checkbox-field input[type="checkbox"] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--accent-blue);
}

.checkbox-field label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.checkbox-field a {
  color: var(--accent-blue-strong);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Honeypot: oculto visualmente y para lectores de pantalla, sin display:none */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  background: var(--surface-2);
  border: 1px solid var(--success);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  color: var(--text-primary);
}

.form-status.form-status--error {
  border-color: var(--error);
}

.form-status[hidden] {
  display: none;
}

/* ---------------------------------------------------------------------- */
/* Páginas legales                                                         */
/* ---------------------------------------------------------------------- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-caption);
  color: var(--text-tertiary);
  margin-bottom: var(--space-5);
}

.breadcrumb a:hover {
  color: var(--text-primary);
}

.legal-content h2 {
  font-size: var(--fs-h3);
  margin-top: var(--space-7);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p,
.legal-content li {
  color: var(--text-secondary);
  margin-top: var(--space-3);
}

.legal-content li {
  padding-left: var(--space-4);
  position: relative;
}

.legal-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.legal-content mark {
  background: var(--warning);
  color: #241a05;
  padding: 0 5px;
  border-radius: 4px;
  font-style: normal;
  font-weight: 600;
}

/* ---------------------------------------------------------------------- */
/* Cursor personalizado (nodo que sigue al ratón — ver js/cursor-fx.js)    */
/* Se omite en táctil. El giro continuo respeta prefers-reduced-motion;    */
/* el seguimiento en sí se mantiene (es 1:1 con el propio gesto del        */
/* usuario, no una animación autónoma).                                   */
/* ---------------------------------------------------------------------- */

.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transform: translate3d(-999px, -999px, 0);
  transition: opacity var(--dur-base) var(--ease-out);
}

.custom-cursor.is-visible {
  opacity: 1;
}

.custom-cursor__ring {
  position: absolute;
  top: -13px;
  left: -13px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-blue);
  transition: width var(--dur-slow) var(--ease-out), height var(--dur-slow) var(--ease-out),
              top var(--dur-slow) var(--ease-out), left var(--dur-slow) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.custom-cursor__dot {
  position: absolute;
  top: -2.5px;
  left: -2.5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-blue);
  transition: background var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.custom-cursor.is-active .custom-cursor__ring {
  width: 46px;
  height: 46px;
  top: -23px;
  left: -23px;
  border-color: var(--silver-100);
}

.custom-cursor.is-active .custom-cursor__dot {
  background: var(--silver-100);
  transform: scale(0.4);
}

@media (prefers-reduced-motion: no-preference) {
  .custom-cursor__ring {
    animation: cursor-spin 6s linear infinite;
  }
}

@keyframes cursor-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (hover: none) {
  .custom-cursor {
    display: none;
  }
}