/* 
    Jaime Figueres Ulate 
    Premium AI Consulting Website
    Styles based on "Anyflow Labs" aesthetics
*/

:root {
  /* Color Palette - Supabase Inspired */
  --bg-dark: #121212;
  --bg-darker: #0c0c0c;
  --bg-panel: #1c1c1c;
  --border-color: #2e2e2e;

  /* Vibrant Accents */
  --accent-lime: #3ecf8e;
  --accent-lime-hover: #24b47e;
  --accent-gradient: linear-gradient(135deg, #3ecf8e 0%, #3ecf8e 100%);

  /* Text Colors */
  --text-main: #ededed;
  --text-muted: #8b9095;

  /* Typography */
  --font-heading: "Inter", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 32px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================
   Reset & Base Styles
========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

html,
body {
  overflow-x: hidden;
  max-width: 100%;
}

body.dark-theme {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-bottom: 8rem;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
  font-weight: 500;
  color: #ffffff;
}

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

ul {
  list-style: none;
}

/* =========================================
   Typography & Utilities
========================================= */
.accent-text {
  color: var(--accent-lime);
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.text-accent {
  color: var(--accent-lime);
}

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

.text-center {
  text-align: center;
}

.section-label,
.eyebrow-text {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #ffffff;
  display: block;
  margin-bottom: 1rem;
}

.small-text {
  font-size: 0.85rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

.mb-5 {
  margin-bottom: 2rem;
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-3 {
  margin-top: 1rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

.mt-5 {
  margin-top: 2rem;
}

.pt-3 {
  padding-top: 1rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.max-w-md {
  max-width: 600px;
}

.max-w-2xl {
  max-width: 768px;
}

.max-w-3xl {
  max-width: 1024px;
}

.w-full {
  width: 100%;
}

.align-start {
  align-items: start;
}

.align-self-end {
  align-self: flex-end;
}

/* =========================================
   Buttons
========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
  font-size: 0.95rem;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}

.btn-primary {
  background-color: var(--accent-lime);
  color: var(--bg-dark);
}

.btn-primary:hover {
  background-color: var(--accent-lime-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(62, 207, 142, 0.2);
}

.btn-outline {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: #2a2a2a;
  border-color: #3a3a3a;
  color: #ffffff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* =========================================
   Layout & Glassmorphism
========================================= */
.content-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 2rem 2rem;
}

.glass-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.bento-box {
  background: var(--bg-darker);
  border-radius: var(--radius-md);
  padding: 3rem;
  border: 1px solid var(--border-color);
}

/* Utilities for aesthetic improvements */
.mini-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  transition: var(--transition-fast);
}

.mini-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.glass-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.glass-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.hover-glow-border {
  transition: var(--transition-fast);
}

.hover-glow-border:hover {
  border-color: var(--accent-lime);
  box-shadow: 0 0 15px rgba(62, 207, 142, 0.15);
}

.divider {
  height: 40px;
  width: 1px;
  background-color: var(--border-color);
  margin: 0 1rem;
}

@media (max-width: 1024px) {
  .divider {
    height: 1px;
    width: 100%;
    margin: 1rem 0;
  }
}

/* Layout Grids */
.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.gap-lg {
  gap: 3rem;
}

section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  margin-bottom: 4rem;
}

.section-title {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* =========================================
   Floating Navigation
========================================= */
.floating-nav {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: #1c1c1cd9;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-lime);
}

/* Tooltip implementation */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-dark);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  border: 1px solid var(--border-color);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* =========================================
   Specific Sections
========================================= */

/* Hero Section */
.hero-section {
  min-height: 90vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem;
  margin-top: 2rem;
}

.hero-title {
  font-size: clamp(2.5rem, 4vw + 1rem, 4rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

/* Hero Visual & Orb */
.hero-visual {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.glowing-orb {
  position: absolute;
  width: 400px;
  max-width: 80vw;
  height: 400px;
  max-height: 80vw;
  background: radial-gradient(circle,
      var(--accent-lime) 0%,
      rgba(62, 207, 142, 0) 70%);
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(50px);
  animation: pulse 8s infinite alternate;
}

.hero-img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  position: relative;
  z-index: 2;
  -webkit-mask-image: linear-gradient(to bottom, black 75%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 75%, transparent 100%);
}

.floating-stats {
  position: absolute;
  bottom: 5%;
  right: 10%;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-radius: var(--radius-md);
  animation: float 6s ease-in-out infinite;
  z-index: 10;
}

@media (max-width: 1024px) {
  .floating-stats {
    position: relative;
    bottom: auto;
    right: auto;
    margin: 2rem auto 0;
    justify-content: center;
    align-items: center !important;
    flex-wrap: wrap;
  }
}

/* Social Proof (Trust Bar) */
.social-proof-section {
  margin-top: -3rem;
  position: relative;
  z-index: 10;
}

.logo-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.logo-item {
  opacity: 0.5;
  filter: grayscale(100%);
  transition: var(--transition-fast);
}

.logo-item:hover {
  opacity: 1;
  filter: grayscale(0%);
  transform: translateY(-2px);
}

.metrics-grid {
  display: flex;
  justify-content: space-around;
  align-items: center;
  text-align: center;
  flex-wrap: wrap;
}

.metric-item {
  flex: 1;
}

.metric-number {
  font-size: 3.5rem;
  color: var(--accent-lime);
  line-height: 1;
}

.metric-label {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Bento Grid (Services) */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 1.5rem;
}

.bento-card {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.span-2 {
  grid-column: span 2;
}

.card-icon {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-lime);
  margin-bottom: 1.5rem;
}

.bento-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.bento-card p {
  color: var(--text-muted);
}

.card-content-flex {
  display: flex;
  justify-content: space-between;
  height: 100%;
}

/* Animations block */
.group-hover {
  transition: var(--transition-fast);
}

.group-hover:hover {
  border-color: #3a3a3a;
  background: #222222;
  transform: translateY(-2px);
}

/* Keynotes/Speaking */
.feature-list {
  margin-top: 2rem;
}

.feature-list li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.1rem;
}

.video-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-darker);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.video-placeholder:hover {
  border-color: var(--accent-lime);
  background: rgba(62, 207, 142, 0.05);
}

/* Academy Courses */
.course-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-hero-pattern {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
  display: flex;
  padding: 2rem;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.card-bg-icon {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%) rotate(-10deg);
  font-size: 14rem;
  color: var(--accent-lime);
  opacity: 0.05;
  z-index: 1;
  transition: var(--transition-smooth);
}

.group-hover:hover .card-bg-icon {
  transform: translateY(-50%) rotate(0deg) scale(1.1);
  opacity: 0.12;
}

.card-hero-pattern .badge {
  position: relative;
  z-index: 2;
}

.course-img-placeholder {
  height: 200px;
  width: 100%;
}

.bg-gradient-1 {
  background: linear-gradient(45deg, #1c1c1c, #262626);
}

.bg-gradient-2 {
  background: linear-gradient(45deg, #1a1a1a, #222222);
}

.course-info {
  padding: 2.5rem;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge {
  position: absolute;
  top: -15px;
  left: 2.5rem;
  background: var(--bg-dark);
  border: 1px solid var(--accent-lime);
  color: var(--accent-lime);
  padding: 0.25rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
}

.course-info h3 {
  font-size: 1.8rem;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.course-info p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex: 1;
}

/* Resources / Form */
.ul-styled {
  list-style: none;
  padding-left: 0;
  margin-top: 0.5rem;
}

.ul-styled li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.ul-styled li::before {
  content: "•";
  color: var(--accent-lime);
  font-weight: bold;
  position: absolute;
  left: 0;
  top: 0;
}

.icon-list {
  list-style: none;
  padding: 0;
}

.icon-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
  font-size: 1.05rem;
}

.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 1024px) {
  .grid-3-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-3-col {
    grid-template-columns: 1fr;
  }
}

.outline-border {
  border: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.outline-border:hover {
  border-color: var(--accent-lime);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(62, 207, 142, 0.1);
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  max-width: 500px;
  margin: 0 auto;
}

.form-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-pill);
  color: white;
  font-family: inherit;
  font-size: 1rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-lime);
}

/* Substack Newsletter Embed */
.newsletter-embed {
  border-radius: 12px;
  overflow: hidden;
  background: white;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.newsletter-embed.dark-embed {
  background: var(--bg-darker);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.newsletter-embed iframe {
  width: 100%;
  max-width: 100%;
}

.resources-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.link-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.link-item:hover {
  color: var(--accent-lime);
}

/* Visibility Helpers for Substack Mobile Override */
.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

/* Contact/Footer */
.contact-section h2 {
  font-size: 3rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-icon {
  width: 45px;
  height: 45px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.social-icon:hover {
  background: var(--accent-lime);
  color: var(--bg-dark);
  border-color: var(--accent-lime);
}

.custom-form .form-group {
  margin-bottom: 1.5rem;
}

.custom-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.custom-form .form-input {
  width: 100%;
  border-radius: var(--radius-md);
}

/* =========================================
   Animations
========================================= */
@keyframes float {
  0% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-20px);
  }

  100% {
    transform: translateY(0px);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.1;
  }

  100% {
    transform: scale(1.1);
    opacity: 0.2;
  }
}

.pulse-anim {
  animation: pulse 2s infinite alternate;
}

/* Scroll Reveal Classes (handled by JS) */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out;
  will-change: opacity, visibility;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
}

/* =========================================
   Media Queries
========================================= */
@media (max-width: 1024px) {
  .section-title {
    font-size: 3rem;
  }

  .hero-title {
    font-size: clamp(2.5rem, 5vw + 1rem, 3.5rem);
  }

  .hero-section {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 3rem 2rem;
  }

  .hero-visual {
    flex-direction: column;
  }

  .hero-subtitle {
    margin: 0 auto 2.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: span 1;
  }

  .grid-2-col {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* Visibility Helpers for Substack Mobile Override */
  .desktop-only {
    display: none !important;
  }

  .mobile-only {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  body.dark-theme {
    padding-bottom: 12rem;
  }

  .section-title {
    font-size: 2.5rem;
  }

  .hero-section {
    padding: 2rem 1rem;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
    word-break: break-word;
  }

  .hero-img {
    max-height: 55vh;
    width: 100%;
    object-fit: contain;
  }

  .floating-nav {
    width: 95%;
    padding: 0.5rem;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    border-radius: var(--radius-lg);
  }

  .nav-links {
    gap: 0.25rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }

  .nav-links a {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    font-size: 0.9rem;
  }

  .nav-cta {
    display: inline-flex;
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
    white-space: nowrap;
    flex-shrink: 0;
    width: 100%;
    justify-content: center;
  }

  /* Hide heavy button on small mobile nav */
  .newsletter-form {
    flex-direction: column;
  }

  section {
    padding: 4rem 0;
  }

  .content-wrapper {
    padding: 0 1rem 2rem 1rem;
  }

  .glass-panel,
  .bento-card,
  .bento-box {
    padding: 1.5rem;
  }

}

/* =========================================
   Media Page Styles (Photo & Video Galleries)
========================================= */

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.video-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.video-card:hover {
  border-color: var(--accent-lime);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transform: translateY(-5px);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-info {
  padding: 1.5rem;
}

.video-info h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.video-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Photo Gallery (Masonry/Grid) */
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  grid-auto-rows: 250px;
  grid-auto-flow: dense;
  gap: 1.5rem;
  margin-top: 2rem;
}

.photo-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.photo-card:hover img {
  transform: scale(1.08);
}

.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.8) 0%,
      rgba(0, 0, 0, 0) 100%);
  padding: 2rem 1.5rem 1.5rem;
  transform: translateY(20px);
  opacity: 0;
  transition: var(--transition-fast);
}

.photo-card:hover .photo-overlay {
  transform: translateY(0);
  opacity: 1;
}

.photo-overlay p {
  color: white;
  font-weight: 500;
  margin: 0;
  font-size: 1rem;
}

/* =========================================
   Particles Background
========================================= */
#particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.8;
}