/* Enigma Trading - Main CSS */

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #0b0b13;
  --color-text: #ffffff;
  --color-accent: #7c72ff;
  --color-accent-hover: #6259d1;
  --color-light-gray: #151523;
  --color-mid-gray: #333342;
  --color-dark-gray: #666677;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;

  --max-width: 1200px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  font-weight: 400;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

h1 {
  font-size: 4rem;
  background: linear-gradient(135deg, #fff 0%, #7c72ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
  color: rgba(255, 255, 255, 0.8);
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--color-accent);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-lg);
}

/* Header */
header {
  padding: var(--spacing-lg) 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(11, 11, 19, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
}

header.scrolled {
  padding: var(--spacing-md) 0;
  background: rgba(11, 11, 19, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  border-bottom: none;
  transition: transform 0.2s ease;
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, #7c72ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.logo-image {
  height: 40px;
  width: auto;
  vertical-align: middle;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  transition: transform 0.2s ease;
}

.brand:hover .logo-image {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  border-bottom: none;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* Hero Section */
.hero {
  padding: calc(var(--spacing-xl) * 2) 0 var(--spacing-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 6rem;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: radial-gradient(
    circle at center,
    rgba(124, 114, 255, 0.1) 0%,
    transparent 70%
  );
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at center,
    rgba(124, 114, 255, 0.15) 0%,
    transparent 70%
  );
  pointer-events: none;
  animation: pulseBackground 8s ease-in-out infinite;
}

.hero-content {
  max-width: 50%;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease-out forwards;
  animation-delay: 0.5s;
}

.geometric-element {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 1s ease-out forwards;
  animation-delay: 0.3s;
}

.sigma-symbol {
  width: 100%;
  max-width: 600px;
  height: auto;
  opacity: 0.7;
  transform-origin: center;
  animation: float 8s ease-in-out infinite;
}

.theme-dots {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.theme-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 0 15px rgba(124, 114, 255, 0.6);
  transition: all 0.3s ease;
  opacity: 0;
  animation: fadeIn 0.5s ease-out forwards;
}

.theme-dot:nth-child(1) {
  animation-delay: 0.8s;
}
.theme-dot:nth-child(2) {
  animation-delay: 1s;
}
.theme-dot:nth-child(3) {
  animation-delay: 1.2s;
}
.theme-dot:nth-child(4) {
  animation-delay: 1.4s;
}

.theme-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  background: transparent;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 2s ease-in-out infinite;
}

.theme-dot:hover {
  transform: translate(-50%, -50%) scale(1.2);
  box-shadow: 0 0 25px rgba(124, 114, 255, 0.8);
}

.dot-label {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-light-gray);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  color: var(--color-accent);
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  transform-origin: bottom center;
}

.theme-dot:hover .dot-label {
  opacity: 1;
  top: -40px;
  transform: translateX(-50%) scale(1.1);
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.2;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
  }
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-10px) rotate(1deg);
  }
  50% {
    transform: translateY(0) rotate(0deg);
  }
  75% {
    transform: translateY(10px) rotate(-1deg);
  }
  100% {
    transform: translateY(0) rotate(0deg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseBackground {
  0% {
    opacity: 0.1;
    transform: scale(1);
  }
  50% {
    opacity: 0.15;
    transform: scale(1.05);
  }
  100% {
    opacity: 0.1;
    transform: scale(1);
  }
}

.hero h1 {
  font-size: 4.5rem;
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.1;
}

.hero p {
  font-size: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-lg);
  color: rgba(255, 255, 255, 0.8);
}

/* Cards */
.card {
  background-color: var(--color-light-gray);
  padding: var(--spacing-lg);
  border-radius: 8px;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.1);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.card p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-lg);
}

/* Buttons */
.button {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-accent-hover)
  );
  color: white;
  border-radius: 4px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.button-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.button-outline:hover {
  border-color: var(--color-accent);
  background: rgba(59, 130, 246, 0.1);
}

/* Research Section */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.research-item {
  background-color: var(--color-light-gray);
  padding: var(--spacing-lg);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.research-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.1);
}

.research-meta {
  color: var(--color-accent);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.keyword {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-accent);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Open Source Section */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.project-item {
  border: 1px solid var(--color-mid-gray);
  padding: var(--spacing-lg);
  border-radius: 4px;
}

.project-item h3 {
  margin-bottom: var(--spacing-sm);
}

.project-links {
  margin-top: var(--spacing-md);
}

.project-links a {
  display: inline-block;
  margin-right: var(--spacing-md);
}

/* Insights Section */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.insight-item {
  margin-bottom: var(--spacing-lg);
}

.insight-item h3 {
  margin-bottom: var(--spacing-sm);
}

.insight-meta {
  color: var(--color-dark-gray);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

/* Footer */
footer {
  background-color: var(--color-light-gray);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-accent);
}

/* Utilities */
.text-center {
  text-align: center;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

/* Responsive Design */
@media (max-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  .hero h1 {
    font-size: 3.5rem;
  }

  .nav-links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* Research Timeline */
.research-timeline {
  position: relative;
  padding-left: 2rem;
}

.research-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.1);
}

.research-item {
  position: relative;
  margin-bottom: 4rem;
  padding-left: 2rem;
}

.research-item::before {
  content: '';
  position: absolute;
  left: -0.5rem;
  top: 0.5rem;
  width: 1rem;
  height: 1rem;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(124, 114, 255, 0.5);
}

.research-date {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.research-content {
  background: var(--color-light-gray);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.research-content:hover {
  transform: translateX(4px);
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(124, 114, 255, 0.1);
}

.research-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(124, 114, 255, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.research-content h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.research-links {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.research-link {
  font-size: 0.875rem;
  color: var(--color-accent);
  text-decoration: none;
  transition: all 0.2s ease;
}

.research-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.research-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .research-timeline {
    padding-left: 1rem;
  }

  .research-item {
    padding-left: 1rem;
  }

  .research-content {
    padding: 1rem;
  }

  .research-content h3 {
    font-size: 1.25rem;
  }
}