@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700;900&display=swap');

:root {
  /* Core Palette - High Contrast */
  --color-base: #000000;
  --color-surface: #0A0A0B;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-hr: rgba(255, 255, 255, 0.05);

  --color-accent: #7FFF00;
  /* Chartreuse */
  --color-accent-glow: rgba(127, 255, 0, 0.15);

  --text-main: #FFFFFF;
  --text-muted: #A1A1AA;

  --font-main: 'Roboto', sans-serif;

  --section-spacing: 50px;
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-base);
  color: var(--text-main);
  line-height: 1.6;
  text-align: center;
  /* Global Center Alignment */
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Base Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-main);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: #FFFFFF;
}

.mono-label {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* Layout Modules */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-spacing) 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  /* Ensure content is centered */
}

/* Buttons - Sharp and Chartreuse */
.cta-btn {
  padding: 1rem 3rem;
  background: var(--color-accent);
  color: #000000;
  font-family: var(--font-main);
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  display: inline-block;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.cta-secondary {
  padding: 0.9rem 2.5rem;
  background: transparent;
  color: var(--text-main);
  border: 1.5px solid var(--color-border);
  font-family: var(--font-main);
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  display: inline-block;
}

.cta-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Grid Symmetry (No Dangling) */
.symmetric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  width: 100%;
  justify-content: center;
  margin-top: 3rem;
}

/* Special Rule: If 4 items, make them 2x2. If 3, 3x1. */
.grid-4-items {
  grid-template-columns: repeat(2, 1fr);
}

.arch-card {
  border: 1px solid var(--color-border);
  padding: 3rem 2rem;
  background: var(--color-surface);
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.arch-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
}

.arch-card i {
  color: var(--color-accent);
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

/* Grain Effect (Retained for Premium Detail) */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.02;
  z-index: 9999;
}

/* Hero Split Layout */
.hero-grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: start;
  /* Align precisely with the top of the section gap */
  gap: 4rem;
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
  perspective: 1000px;
}

.chatbot-ui {
  transform: rotateY(-10deg) rotateX(2deg);
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), 0 0 1px 1px var(--color-border);
  height: 450px;
  /* Fixed size above-the-fold */
  display: flex;
  flex-direction: column;
}

.chatbot-body {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: center;
}

/* Custom Chatbot Scrollbar */
.chatbot-body::-webkit-scrollbar {
  width: 4px;
}

.chatbot-body::-webkit-scrollbar-track {
  background: transparent;
}

.chatbot-body::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.chatbot-ui:hover {
  transform: rotateY(0deg) rotateX(0deg);
}

@media (max-width: 968px) {
  .hero-grid-2 {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-text {
    text-align: center !important;
  }

  .hero-text span {
    text-align: center !important;
  }

  .hero-text div {
    justify-content: center;
  }

  .hero-visual {
    justify-content: center;
    transform: none;
  }

  .chatbot-ui {
    transform: none !important;
  }
}

@media (max-width: 768px) {

  .symmetric-grid,
  .grid-4-items {
    grid-template-columns: 1fr;
  }
}