/* ================================
   MCINTOSH - Design System
   ================================ */

:root {
  /* Colors */
  --color-bg: #1a1a1a;
  --color-bg-secondary: #242424;
  --color-text: #e8e8e8;
  --color-text-secondary: #a0a0a0;
  --color-accent: #00ff88;
  --color-accent-blue: #00d4ff;
  --color-accent-purple: #b388ff;
  --color-border: #333333;

  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Animation */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ================================
   RESET & BASE STYLES
   ================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-mono);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* ================================
   TYPOGRAPHY
   ================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

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

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-blue), var(--color-accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================
   LAYOUT
   ================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================
   NAVIGATION
   ================================ */

nav {
  position: fixed;
  top: var(--spacing-xs);
  left: var(--spacing-xs);
  right: var(--spacing-xs);
  z-index: 1000;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 8px;
  transition: all var(--transition-base);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

nav::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 8px;
  padding: 0.5px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-blue), var(--color-accent-purple), var(--color-accent));
  background-size: 400% 400%;
  -webkit-mask: 
    linear-gradient(#fff 0 0) content-box, 
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: -1;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
  transition: all var(--transition-fast);
}

.logo:hover {
  color: var(--color-accent);
}

.logo span {
  color: var(--color-accent);
}

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

.nav-links.active {
  display: flex;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  background-color: rgba(0, 255, 136, 0.1);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    width: 40px;
    height: 40px;
    justify-content: center;
    align-items: center;
    border-radius: 4px;
    transition: all var(--transition-base);
    position: relative;
    z-index: 1001;
  }

  .menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.05);
  }

  .menu-toggle::before,
  .menu-toggle::after {
    content: '';
    position: absolute;
    background-color: var(--color-accent);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .menu-toggle::before {
    top: 50%;
    left: 10px;
    right: 10px;
    height: 1px;
    transform: translateY(-50%);
  }

  .menu-toggle::after {
    left: 50%;
    top: 10px;
    bottom: 10px;
    width: 1px;
    transform: translateX(-50%);
  }

  .menu-toggle.active::before {
    transform: translateY(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    height: 1.5px;
  }

  .menu-toggle.active::after {
    transform: translateX(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    width: 1.5px;
  }

  

/* ================================
   HERO SECTION
   ================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  z-index: 10;
  position: relative;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 0.8s ease forwards;
}

.hero .subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

.hero .description {
  font-size: var(--font-size-base);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
}

/* Grid Background Animation */
.grid-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.03;
  background-image:
    linear-gradient(var(--color-accent) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-accent) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 1;
}

/* Animated Grid Vertices */
.grid-vertex {
  position: fixed;
  width: 20px;
  height: 20px;
  z-index: 0;
  pointer-events: none;
  opacity: 0.03;
}

.grid-vertex::before,
.grid-vertex::after {
  content: '';
  position: absolute;
  background-color: var(--color-accent);
}

.grid-vertex::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

.grid-vertex::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

.grid-vertex.animating {
  animation: vertexFadeInOut 2s cubic-bezier(0.4, 0, 0.2, 1);
}

.grid-vertex.animating::before {
  animation: vertexRotateBefore 2s ease-in-out;
}

.grid-vertex.animating::after {
  animation: vertexRotateAfter 2s ease-in-out;
}

@keyframes vertexFadeInOut {
  0% {
    opacity: 0.03;
  }
  5% {
    opacity: 0.03;
  }
  18% {
    opacity: 0.3;
  }
  82% {
    opacity: 0.3;
  }
  95% {
    opacity: 0.03;
  }
  100% {
    opacity: 0.03;
  }
}

@keyframes vertexRotateBefore {
  0% {
    transform: translateY(-50%) rotate(0deg);
    background-color: var(--color-accent);
    height: 1px;
  }
  25% {
    transform: translateY(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    height: 1.5px;
  }
  50% {
    transform: translateY(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    height: 1.5px;
  }
  75% {
    transform: translateY(-50%) rotate(0deg);
    background-color: var(--color-accent);
    height: 1px;
  }
  100% {
    transform: translateY(-50%) rotate(0deg);
    background-color: var(--color-accent);
    height: 1px;
  }
}

@keyframes vertexRotateAfter {
  0% {
    transform: translateX(-50%) rotate(0deg);
    background-color: var(--color-accent);
    width: 1px;
  }
  25% {
    transform: translateX(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    width: 1.5px;
  }
  50% {
    transform: translateX(-50%) rotate(45deg);
    background-color: var(--color-accent-blue);
    width: 1.5px;
  }
  75% {
    transform: translateX(-50%) rotate(0deg);
    background-color: var(--color-accent);
    width: 1px;
  }
  100% {
    transform: translateX(-50%) rotate(0deg);
    background-color: var(--color-accent);
    width: 1px;
  }
}

/* ================================
   BUTTONS & CTA
   ================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-accent);
  background-color: transparent;
  color: var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: var(--color-accent);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn:hover {
  color: var(--color-bg);
}

.btn:hover::before {
  left: 0;
}

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

.btn-primary::before {
  background-color: var(--color-accent-blue);
  left: 0;
}

.btn-primary:hover::before {
  left: 100%;
}

.cta-group {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.6s forwards;
  opacity: 0;
}

/* ================================
   CARDS & GRID
   ================================ */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: calc(var(--spacing-md) + 8px) var(--spacing-md) var(--spacing-md);
  transition: all var(--transition-base), opacity 0.6s ease, transform 0.6s ease;
  position: relative;
  overflow: visible;
  display: flex;
  flex-direction: column;
  /* 45-degree cut corner at top left */
  -webkit-clip-path: polygon(20px 0%, 100% 0%, 100% 100%, 0% 100%, 0% 20px);
  clip-path: polygon(20px 0%, 100% 0%, 100% 100%, 0% 100%, 0% 20px);
}

/* Hide cards initially if JS is enabled */
.js-enabled .card {
  opacity: 0;
  transform: translateY(30px);
}

/* Decorative corner accent */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-blue));
  -webkit-clip-path: polygon(0% 0%, 100% 0%, 0% 100%);
  clip-path: polygon(0% 0%, 100% 0%, 0% 100%);
  z-index: 1;
}

/* Top border accent line */
.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-blue));
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  z-index: 1;
}

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

.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 255, 136, 0.15);
}

.card:hover::after {
  transform: translateX(0);
}

.card h3 {
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  flex-shrink: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  position: relative;
  z-index: 2;
}

.js-enabled .card h3 {
  opacity: 0;
  transform: translateY(10px);
}

.card.visible h3 {
  opacity: 1;
  transform: translateY(0);
}

.card p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
  position: relative;
  z-index: 2;
}

.js-enabled .card p {
  opacity: 0;
  transform: translateY(10px);
}

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

.card-tag {
  display: inline-block;
  padding: 4px 8px;
  background-color: rgba(0, 255, 136, 0.1);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  border: 1px solid var(--color-accent);
  margin-top: var(--spacing-sm);
  margin-right: var(--spacing-xs);
  flex-shrink: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-enabled .card-tag {
  opacity: 0;
  transform: translateY(10px);
}

.card.visible .card-tag {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   SECTIONS
   ================================ */

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

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ================================
   FOOTER
   ================================ */

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

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

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.copyright {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ================================
   UTILITIES
   ================================ */

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

.mt-lg {
  margin-top: var(--spacing-lg);
}

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

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

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

/* ================================
   RESPONSIVE
   ================================ */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.5rem;
  }

  nav {
    top: var(--spacing-xs);
    left: var(--spacing-xs);
    right: var(--spacing-xs);
    border-radius: 8px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 8px 8px;
    transform-origin: top center;
    transform: scaleY(0);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), 
                opacity 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
  }

  .nav-links.active {
    display: flex;
    transform: scaleY(1);
    opacity: 1;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                opacity 0.3s ease 0.1s;
  }

  .menu-toggle {
    display: flex;
  }

  /* Ensure mobile nav links stack properly */
  .nav-links li {
    margin: var(--spacing-sm) 0;
  }

  .nav-links li:first-child {
    margin-top: 0;
  }

  .nav-links li:last-child {
    margin-bottom: 0;
  }

  /* Mobile Navigation Links */
  .nav-links a {
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    text-align: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
  }

  

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

  .cta-group {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  h1 {
    font-size: var(--font-size-3xl);
  }

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