/* =====================================================================
   StellarMinds · Landing pública
   Presentación del sistema de gestión de equipamiento astronómico.
   Hoja de estilos independiente del sistema interno (site.css).
   ===================================================================== */

:root {
  --bg: #06080f;
  --bg-alt: #0a0e1a;
  --surface: #10152680;
  --surface-solid: #10152a;
  --surface-2: #161d38;
  --border: #232c4d;
  --text-primary: #eef1f9;
  --text-secondary: #a3aecb;
  --text-muted: #6f7996;

  --primary: #5b7cfa;
  --primary-hover: #4665e6;
  --primary-soft: rgba(91, 124, 250, 0.14);
  --accent: #9b7bff;
  --accent-soft: rgba(155, 123, 255, 0.14);
  --cyan: #45d4e6;

  --success: #2fbf8f;
  --warning: #f0a93e;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 25px 60px -20px rgba(0, 0, 0, 0.65);
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.landing {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  overflow-x: hidden;
}

.landing a {
  text-decoration: none;
  color: inherit;
}

.landing img {
  max-width: 100%;
}

.landing .container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.landing h1, .landing h2, .landing h3, .landing h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.landing .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.1rem;
}

.landing .section {
  padding: 6.5rem 0;
  position: relative;
}

.landing .section-head {
  max-width: 640px;
  margin-bottom: 3rem;
}

.landing .section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.landing .section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 0.9rem;
}

.landing .section-head p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ---------------------------------------------------------------------
   Navbar
   --------------------------------------------------------------------- */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: transparent;
  transition: background-color 220ms ease, border-color 220ms ease, padding 220ms ease;
  border-bottom: 1px solid transparent;
}

.landing-nav.scrolled {
  background: rgba(6, 8, 15, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 0;
}

.landing-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.landing-brand .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #d7e2ff, var(--primary) 60%, var(--accent));
  box-shadow: 0 0 12px 3px var(--primary-soft);
  flex-shrink: 0;
}

.landing-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.landing-links a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 160ms ease, background-color 160ms ease;
}

.landing-links a:hover,
.landing-links a.active {
  color: var(--text-primary);
  background: var(--surface-2);
}

.landing-nav .btn-login {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-sm);
  transition: background-color 160ms ease, transform 160ms ease;
}

.landing-nav .btn-login:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 2.4rem;
  height: 2.4rem;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 1.2rem;
}

@media (max-width: 900px) {
  .landing-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .landing-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(8, 11, 20, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem 1.25rem;
    gap: 0.2rem;
  }
}

/* ---------------------------------------------------------------------
   Hero
   --------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  overflow: hidden;
}

#starfield {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
}

.hero-glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 800px 500px at 15% 15%, rgba(91, 124, 250, 0.22), transparent 60%),
    radial-gradient(ellipse 700px 500px at 90% 10%, rgba(155, 123, 255, 0.16), transparent 55%),
    radial-gradient(ellipse 900px 600px at 50% 110%, rgba(69, 212, 230, 0.10), transparent 60%);
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.35;
  z-index: 0;
  pointer-events: none;
}

.hero-blob.b1 {
  width: 420px; height: 420px;
  background: var(--primary);
  top: -120px; right: -80px;
  animation: floatBlob 16s ease-in-out infinite;
}

.hero-blob.b2 {
  width: 320px; height: 320px;
  background: var(--accent);
  bottom: -100px; left: -60px;
  animation: floatBlob 20s ease-in-out infinite reverse;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.08); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  line-height: 1.08;
  margin-bottom: 1.4rem;
  opacity: 0;
  transform: translateY(16px);
  animation: heroIn 700ms ease forwards 150ms;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--primary), var(--accent) 55%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(16px);
  animation: heroIn 700ms ease forwards 300ms;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  opacity: 0;
  transform: translateY(16px);
  animation: heroIn 700ms ease forwards 450ms;
}

@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 30px -6px rgba(91, 124, 250, 0.55);
  transition: transform 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.btn-hero-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 34px -6px rgba(91, 124, 250, 0.65);
  color: #fff;
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-weight: 600;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.btn-hero-secondary:hover {
  border-color: var(--primary);
  background: var(--surface-2);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 2.5rem;
  margin-top: 4rem;
  opacity: 0;
  transform: translateY(16px);
  animation: heroIn 700ms ease forwards 600ms;
}

.hero-stats .stat-num {
  font-size: 2.1rem;
  font-weight: 700;
  background: linear-gradient(100deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-stats .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  animation: bounce 2.2s ease-in-out infinite;
}

.scroll-cue i { font-size: 1.1rem; }

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ---------------------------------------------------------------------
   Reveal on scroll
   --------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

.reveal-stagger.is-visible > * {
  animation: none;
}

/* ---------------------------------------------------------------------
   Feature cards / carousel
   --------------------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.4rem;
}

.feature-card {
  background: linear-gradient(160deg, var(--surface-2), var(--surface-solid));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.9rem 1.7rem;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

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

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.2rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
}

/* Bootstrap carousel restyle */
#featuresCarousel .carousel-inner {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface-2), var(--surface-solid));
}

.carousel-slide {
  padding: 3rem 3.5rem;
  min-height: 300px;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.carousel-slide .cs-icon {
  flex-shrink: 0;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.carousel-slide h3 {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.carousel-slide p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

#featuresCarousel .carousel-indicators {
  position: static;
  margin-top: 1.4rem;
}

#featuresCarousel .carousel-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--border);
  opacity: 1;
  border: none;
}

#featuresCarousel .carousel-indicators .active {
  background-color: var(--primary);
  width: 22px;
  border-radius: 999px;
}

#featuresCarousel .carousel-control-prev,
#featuresCarousel .carousel-control-next {
    margin: 1rem;
  position: static;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  opacity: 1;
}

#featuresCarousel .carousel-control-prev:hover,
#featuresCarousel .carousel-control-next:hover {
  border-color: var(--primary);
}

#featuresCarousel .carousel-control-prev-icon,
#featuresCarousel .carousel-control-next-icon {
  width: 1rem;
  height: 1rem;
}

.carousel-nav-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
}

@media (max-width: 700px) {
  .carousel-slide {
    flex-direction: column;
    text-align: center;
    padding: 2.2rem 1.5rem;
  }
}

/* ---------------------------------------------------------------------
   Experiencia IA
   --------------------------------------------------------------------- */
.ai-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
}

@media (max-width: 900px) {
  .ai-section { grid-template-columns: 1fr; }
}

.ai-list {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.ai-list li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.55;
}

.ai-list i {
  color: var(--success);
  font-size: 1.1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.ai-visual {
  position: relative;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-ring {
  position: absolute;
  border: 1px solid var(--border);
  border-radius: 50%;
  animation: spin linear infinite;
}

.orbit-ring.r1 { width: 340px; height: 340px; animation-duration: 40s; border-color: rgba(91,124,250,0.25); }
.orbit-ring.r2 { width: 250px; height: 250px; animation-duration: 28s; animation-direction: reverse; border-color: rgba(155,123,255,0.28); }
.orbit-ring.r3 { width: 165px; height: 165px; animation-duration: 18s; border-color: rgba(69,212,230,0.3); }

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

.orbit-ring::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px 3px var(--primary-soft);
}

.ai-core {
  position: relative;
  z-index: 2;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff, var(--primary) 45%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.1rem;
  color: #fff;
  box-shadow: 0 0 50px 8px var(--primary-soft);
  animation: pulseCore 3.2s ease-in-out infinite;
}

@keyframes pulseCore {
  0%, 100% { box-shadow: 0 0 40px 6px var(--primary-soft); }
  50% { box-shadow: 0 0 60px 14px var(--accent-soft); }
}

/* ---------------------------------------------------------------------
   Roles - tabs
   --------------------------------------------------------------------- */
.role-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.2rem;
}

.role-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.3rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-solid);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 180ms ease;
}

.role-tab-btn i { font-size: 1rem; }

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

.role-tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.role-panel {
  display: none;
  background: linear-gradient(160deg, var(--surface-2), var(--surface-solid));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.4rem;
}

.role-panel.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  animation: heroIn 450ms ease forwards;
}

@media (max-width: 800px) {
  .role-panel.active { grid-template-columns: 1fr; }
}

.role-panel h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.role-panel .role-desc {
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.3rem;
}

.role-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.role-panel ul li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.role-panel ul li i {
  color: var(--primary);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* ---------------------------------------------------------------------
   Tecnología - marquee
   --------------------------------------------------------------------- */
.tech-marquee-wrap {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.tech-marquee {
  display: flex;
  gap: 1rem;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.tech-marquee:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.tech-chip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.7rem 1.3rem;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  white-space: nowrap;
}

.tech-chip i {
  color: var(--primary);
  font-size: 1.1rem;
}

/* ---------------------------------------------------------------------
   Proyecto / about
   --------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  background: var(--surface-solid);
}

.about-card i {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
  display: block;
}

.about-card h4 {
  font-size: 1.02rem;
  margin-bottom: 0.5rem;
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

/* ---------------------------------------------------------------------
   CTA final
   --------------------------------------------------------------------- */
.cta-section {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 4rem 2.5rem;
  text-align: center;
  background: linear-gradient(135deg, rgba(91,124,250,0.16), rgba(155,123,255,0.14));
  border: 1px solid var(--border);
}

.cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 1.8rem;
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.landing-footer {
  border-top: 1px solid var(--border);
  padding: 2.4rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.landing-footer .footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.landing-footer .landing-brand {
  font-size: 1rem;
}

@media (max-width: 576px) {
  .landing .section { padding: 4rem 0; }
  .carousel-slide { padding: 2rem 1.2rem; }
  .about-grid, .hero-stats { gap: 1.2rem; }
}