/* ==========================================================================
   Athena AI — components.css
   Botones, tarjetas, badges, formularios y controles reutilizables.
   ========================================================================== */

/* --- Botones ---------------------------------------------------------------*/
.btn {
  --btn-padding-y: 12px;
  --btn-padding-x: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

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

.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  color: var(--color-text);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  --btn-padding-y: 15px;
  --btn-padding-x: 28px;
  font-size: 1.02rem;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --- Icon button (theme toggle, nav toggle) --------------------------------*/
.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.icon-btn:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

/* --- Tarjetas de caracteristicas --------------------------------------------*/
.feature-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  gap: 14px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-border));
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1.08rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
}

/* --- Tarjetas de motor (preentrenado / entrenable) --------------------------*/
.engine-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  gap: 18px;
}

.engine-card .badge {
  justify-self: start;
}

.engine-card ul {
  display: grid;
  gap: 10px;
}

.engine-card li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--color-text-muted);
  font-size: 0.94rem;
}

.engine-card li svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--color-success);
}

/* --- Badges ------------------------------------------------------------------*/
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-primary {
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
}

.badge-accent {
  background: color-mix(in srgb, var(--color-accent) 16%, transparent);
  color: var(--color-accent);
}

/* --- Pasos (como funciona) -----------------------------------------------------*/
.step-card {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  display: grid;
  gap: 12px;
}

.step-card::before {
  counter-increment: step;
  content: counter(step);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.step-card p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
}

/* --- Bloques de codigo / API ---------------------------------------------------*/
.code-block {
  background: #0d0e16;
  color: #e6e7f0;
  border-radius: var(--radius-md);
  padding: 20px 22px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  overflow-x: auto;
  border: 1px solid var(--color-border);
}

.code-block .k {
  color: #8686ff;
}

.code-block .s {
  color: #2dd4bf;
}

.code-block .c {
  color: #767b93;
}

.endpoint-list {
  display: grid;
  gap: 12px;
}

.endpoint-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
}

.method {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
  color: #fff;
  flex-shrink: 0;
}

.method-get {
  background: #1a9c6a;
}

.method-post {
  background: var(--color-primary);
}

.endpoint-row code {
  font-size: 0.85rem;
  color: var(--color-text);
}

.endpoint-row span {
  color: var(--color-text-subtle);
  font-size: 0.82rem;
  margin-left: auto;
  text-align: right;
}

/* --- Acceso: selector iniciar sesion / crear cuenta ----------------------------*/
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}

.auth-tab {
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.auth-tab:hover {
  color: var(--color-text);
}

.auth-tab.is-active {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-sm);
}

/* Boton con apariencia de enlace (cambiar de modo desde el pie de la tarjeta) */
.link-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
}

.link-btn:hover {
  text-decoration: underline;
}

/* --- Formularios (login / registro) --------------------------------------------*/
.auth-form[hidden] {
  display: none;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.field input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);
  outline: none;
}

.field-hint {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-subtle);
  font-size: 0.82rem;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* --- Toast de aviso (formularios sin backend aun) ------------------------------*/
.notice {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, var(--color-border));
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.notice svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 1px;
}

.notice[hidden] {
  display: none;
}