/* ==========================================================================
   BANCA VIRTUAL BICICLETAS - MAIN CORE STYLES & COMPONENTS
   ========================================================================== */

/* --- 1. RESET Y BASE --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--line-height-normal);
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img, svg, picture, video {
  max-width: 100%;
  display: block;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

/* --- 2. ACCESIBILIDAD Y FOCO --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-gold);
  color: var(--color-primary-dark);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-bold);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- 3. LAYOUT Y CONTENEDORES --- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-narrow {
  max-width: 900px;
}

.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  position: relative;
}

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

.section-tint {
  background-color: var(--color-primary-tint-subtle);
}

.section-gold-tint {
  background-color: var(--color-gold-tint);
}

/* Encabezados de Sección */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-12) auto;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  background-color: rgba(212, 175, 55, 0.12);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
  border: 1px solid var(--color-border-gold);
}

.section-dark .eyebrow {
  background-color: rgba(212, 175, 55, 0.18);
  color: var(--color-gold-light);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

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

.section-title .text-gold {
  color: var(--color-gold);
}

.section-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

.section-dark .section-subtitle {
  color: var(--color-text-inverse-muted);
}

/* --- 4. HEADER Y NAVEGACIÓN --- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: var(--z-header);
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

/* Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-weight-extrabold);
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  text-decoration: none;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-gold);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(19, 56, 38, 0.25);
  border: 1px solid var(--color-border-gold);
}

.brand-logo-icon svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.brand-text-wrapper {
  display: flex;
  flex-direction: column;
}

.brand-name {
  line-height: 1.1;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--color-primary-dark);
}

.brand-name span {
  color: var(--color-gold-dark);
}

.brand-tagline {
  font-size: 0.68rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Menú Principal */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-main);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background-color: var(--color-gold);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-primary-surface);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Botón Hamburguesa Móvil */
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.mobile-toggle:hover {
  background-color: var(--color-primary-tint);
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

/* --- 5. COMPONENTES: BOTONES --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.8rem 1.6rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 12px rgba(19, 56, 38, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-gold-light);
  box-shadow: 0 6px 20px rgba(10, 30, 20, 0.35);
  transform: translateY(-2px);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #0F1C14;
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(212, 175, 55, 0.4);
}

.btn-outline-forest {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
}

.btn-outline-forest:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn-outline-gold {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background-color: transparent;
}

.btn-outline-gold:hover {
  background-color: var(--color-gold);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 1rem 2.2rem;
  font-size: var(--font-size-base);
}

.btn-block {
  width: 100%;
}

/* --- 6. COMPONENTES: TARJETAS & BADGES --- */
.card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card-interactive:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-border-gold);
}

.card-dark {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--color-text-inverse);
}

.card-dark:hover {
  border-color: var(--color-gold);
  background-color: rgba(255, 255, 255, 0.08);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.3rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
}

.badge-forest {
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.badge-gold {
  background-color: var(--color-gold-tint);
  color: var(--color-gold-dark);
  border: 1px solid var(--color-border-gold);
}

.badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

/* Icon Box */
.icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  transition: transform var(--transition-fast);
}

.icon-box-forest {
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
}

.icon-box-gold {
  background-color: var(--color-gold-tint);
  color: var(--color-gold-dark);
  border: 1px solid var(--color-border-gold);
}

.icon-box-dark {
  background: rgba(212, 175, 55, 0.15);
  color: var(--color-gold-light);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.icon-box svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.card-interactive:hover .icon-box {
  transform: scale(1.08);
}

/* --- 7. GRID SYSTEMS --- */
.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-hero {
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: var(--space-12);
}

/* --- 8. ANIMACIONES INTERSECTION OBSERVER --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.fade-in {
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  will-change: opacity;
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-35px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(35px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.is-visible {
  opacity: 1 !important;
  transform: translate(0, 0) !important;
}

/* Respeto por preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .fade-in-up, .fade-in, .slide-in-left, .slide-in-right {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* --- 9. FOOTER --- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  padding-top: var(--space-20);
  padding-bottom: var(--space-8);
  border-top: 3px solid var(--color-gold);
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer-brand .brand-logo-icon {
  background: var(--color-primary);
  border-color: var(--color-gold);
}

.footer-brand .brand-name {
  color: var(--color-text-inverse);
}

.footer-brand-desc {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-inverse-muted);
  line-height: var(--line-height-relaxed);
  max-width: 320px;
}

.footer-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-gold);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-inverse-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-link:hover {
  color: var(--color-gold);
  transform: translateX(4px);
}

.footer-notice {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-10);
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse-muted);
  line-height: 1.6;
}

.footer-notice strong {
  color: var(--color-gold);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse-muted);
}

.footer-security-badges {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.security-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.75rem;
}

.security-badge svg {
  width: 14px;
  height: 14px;
  fill: var(--color-gold);
}