/* ============================================================
   SinoLink Analyst — Custom Styles
   Diseño: Profesional, Analítico, Minimalista
   ============================================================ */

/* --- Google Fonts (cargado en HTML) --- */
/* Inter: https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap */

/* --- Variables CSS --- */
:root {
  --color-primary: #102743;
  --color-primary-light: #1A3754;
  --color-accent: #761416;
  --color-bg-light: #FAFAFA;
  --color-card: #FFFFFF;
  --color-text-heading: #1E293B;
  --color-text-body: #475569;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reseteo base --- */
html {
  scroll-behavior: smooth;
}

/* --- Navbar Glassmorphism --- */
.nav-glass {
  background: rgba(16, 39, 67, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition-base);
}

/* --- Mobile nav --- */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, opacity 0.25s ease-out, padding 0.3s ease-out;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

#mobile-menu.open {
  max-height: 400px;
  opacity: 1;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

/* --- Hamburger animation --- */
.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  transition: var(--transition-base);
  transform-origin: center;
}

.hamburger-open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Nav link hover effect --- */
.nav-link {
  position: relative;
  color: rgba(255, 255, 255, 0.75);
  transition: var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition-base);
  transform: translateX(-50%);
  border-radius: 1px;
}

.nav-link:hover {
  color: white;
}

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

.nav-link.active {
  color: white;
}

.nav-link.active::after {
  width: 100%;
  background: var(--color-accent);
}

/* --- Hero gradient overlay --- */
.hero-gradient {
  background: linear-gradient(135deg, #102743 0%, #1A3754 50%, #102743 100%);
  position: relative;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 20%, rgba(118, 20, 22, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(118, 20, 22, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Card hover effects --- */
.card-hover {
  transition: var(--transition-base);
  border: 1px solid var(--color-border);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  border-color: var(--color-accent);
}

/* --- Product card specific --- */
.product-card {
  transition: var(--transition-base);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease-out;
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

/* --- CTA glow pulse --- */
.cta-glow {
  position: relative;
  overflow: hidden;
}

.cta-glow::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: var(--color-accent);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s ease;
  filter: blur(8px);
}

.cta-glow:hover::after {
  opacity: 0.5;
  animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

/* --- Metric number animation --- */
.metric-number {
  font-variant-numeric: tabular-nums;
}

/* --- Lead magnet ribbon --- */
.lead-magnet-badge {
  background: linear-gradient(135deg, var(--color-accent), #8B1A1C);
  color: white;
  font-weight: 700;
  padding: 0.25rem 1rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-block;
}

/* --- Testimonial card --- */
.testimonial-card {
  border-left: 3px solid var(--color-accent);
  background: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

/* --- Footer --- */
.footer-gradient {
  background: linear-gradient(180deg, #102743 0%, #0D1F35 100%);
}

/* --- Beehiiv placeholder --- */
.beehiiv-placeholder {
  background: repeating-linear-gradient(
    45deg,
    #FEF9C3,
    #FEF9C3 10px,
    #FEF08A 10px,
    #FEF08A 20px
  );
  border: 2px dashed #761416;
  border-radius: 0.75rem;
  padding: 3rem 2rem;
  text-align: center;
}

/* --- Price badge --- */
.price-badge {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 1.25rem;
}

/* --- Timeline (about page) --- */
.timeline-item {
  position: relative;
  padding-left: 2rem;
  padding-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-light);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 1.5rem;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item:last-child::after {
  display: none;
}

/* --- Avatar placeholder --- */
.avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #9B5A5B);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2.5rem;
  font-weight: 700;
}

/* --- Badge / Pill --- */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-body);
  transition: var(--transition-base);
}

.badge-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: white;
}

/* --- Section dividers --- */
.section-divider {
  width: 4rem;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 0 auto 1rem;
}

/* --- Responsive tweaks --- */
@media (max-width: 640px) {
  .hero-gradient {
    background: linear-gradient(160deg, #102743 0%, #1A3754 70%, #102743 100%);
  }

  .reveal {
    transform: translateY(20px);
    transition-duration: 0.5s;
  }
}

/* --- Selection --- */
::selection {
  background: var(--color-accent);
  color: white;
}

/* --- Scrollbar (subtle) --- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-light);
}
::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-body);
}