/* ==========================================================================
   EBSS - Components
   Componentes reutilizables del sistema de diseño
   ========================================================================== */

/* ========================================
   BOTONES
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 2rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  text-decoration: none;
  text-align: center;
  border: var(--border-width-thick) solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: 
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Botón Primario */
.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  text-decoration: none;
}

/* Botón Secundario (Outline) */
.btn--secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  text-decoration: none;
}

/* Botón Ghost (Solo texto) */
.btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary);
  padding-inline: var(--space-md);
}

.btn--ghost:hover {
  background-color: rgba(var(--color-primary-rgb), 0.1);
  text-decoration: none;
}

/* Tamaños */
.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-sm);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--text-lg);
}

/* Estado de carga */
.btn.is-loading {
  position: relative;
  color: transparent;
}

.btn.is-loading::after {
  content: '';
  position: absolute;
  width: 1.25em;
  height: 1.25em;
  border: 2px solid var(--color-text-inverse);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn--secondary.is-loading::after {
  border-color: var(--color-primary);
  border-top-color: transparent;
}

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

/* ========================================
   FORMULARIOS
   ======================================== */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: var(--font-semibold);
  color: var(--color-heading);
}

.form-group label .required {
  color: var(--color-error);
}

/* Input base */
.input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: var(--border-width-thick) solid var(--color-primary);
  border-radius: var(--radius-md);
  transition: 
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.input::placeholder {
  color: var(--color-text-muted);
}

.input:focus {
  outline: none;
  box-shadow: var(--shadow-primary);
}

.input:disabled {
  background-color: var(--color-bg-alt);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Input con error */
.input.is-error {
  border-color: var(--color-error);
}

.input.is-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* Input con éxito */
.input.is-success {
  border-color: var(--color-success);
}

/* Textarea */
textarea.input {
  min-height: 120px;
  resize: vertical;
}

/* Select */
select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23656b6f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

/* Mensajes de error/ayuda */
.form-message {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--text-sm);
}

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

.form-message--help {
  color: var(--color-text-muted);
}

/* Checkbox y Radio personalizados */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.125rem;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-check label {
  margin-bottom: 0;
  font-weight: var(--font-regular);
  cursor: pointer;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: 
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card--clickable:hover {
  transform: translateY(-4px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card__body {
  padding: var(--space-lg);
}

.card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.card__footer {
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

/* ========================================
   ALERTAS / NOTIFICACIONES
   ======================================== */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.alert__icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-xs);
}

.alert--success {
  background-color: #dcfce7;
  color: #166534;
  border: 1px solid #86efac;
}

.alert--error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.alert--warning {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

.alert--info {
  background-color: #dbeafe;
  color: #1e40af;
  border: 1px solid #93c5fd;
}

/* ========================================
   BADGE / ETIQUETAS
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge--primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.badge--secondary {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

.badge--success {
  background-color: #dcfce7;
  color: #166534;
}

.badge--error {
  background-color: #fee2e2;
  color: #991b1b;
}

/* ========================================
   SECCIONES
   ======================================== */

.section {
  padding-block: var(--space-2xl);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text-inverse);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-3xl);
  }
}

/* ========================================
   NAVEGACIÓN
   ======================================== */

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav__link {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-text);
  font-weight: var(--font-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-primary);
  text-decoration: none;
}

.nav__link.is-active {
  position: relative;
}

.nav__link.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

/* ========================================
   HEADER
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-md);
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo img {
  height: 40px;
  width: auto;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding-block: var(--space-2xl);
}

.footer a {
  color: var(--color-text-inverse);
  opacity: 0.8;
}

.footer a:hover {
  opacity: 1;
  color: var(--color-primary-light);
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-xl);
  text-align: center;
  font-size: var(--text-sm);
  opacity: 0.7;
}