/* zentpixelspt - AI Control Room Interface Design System */

:root {
  /* Core Colours */
  --color-black: #090D12;
  --color-white: #F4F6F2;
  --color-blue: #2878C8;
  --color-green: #42A36A;
  --color-amber: #D49A3A;
  --color-panel: #151C24;
  --color-line: #303943;
  --color-text-grey: #AAB3BC;
  
  /* Typography */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Layout */
  --container-width: 1200px;
  --border-radius: 2px;
  --transition: all 0.3s ease;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-black);
  color: var(--color-text-grey);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-white);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: var(--space-sm); }
a { color: var(--color-white); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-blue); }

.system-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  display: block;
  margin-bottom: var(--space-xs);
}

.system-label.green { color: var(--color-green); }
.system-label.amber { color: var(--color-amber); }

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

.section {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-line);
}

/* Grid System */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }

/* Interface Panels */
.panel {
  background-color: var(--color-panel);
  border: 1px solid var(--color-line);
  padding: var(--space-md);
  position: relative;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.panel:hover {
  border-color: var(--color-blue);
}

.panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 10px; height: 10px;
  border-top: 2px solid var(--color-blue);
  border-left: 2px solid var(--color-blue);
  opacity: 0;
  transition: var(--transition);
}

.panel:hover::before { opacity: 1; }

/* Command Header */
.command-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background-color: rgba(9, 13, 18, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
  z-index: 1000;
  padding: var(--space-sm) 0;
}

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

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-white);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  background-color: var(--color-blue);
}

.nav-desktop {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--color-text-grey);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-white);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--color-blue);
  color: var(--color-white);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn:hover {
  background: var(--color-blue);
  color: var(--color-white);
}

.btn-primary {
  background: var(--color-blue);
}
.btn-primary:hover {
  background: transparent;
}

/* Mobile Menu */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  padding: 0.5rem;
}

.nav-mobile-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--color-black);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  transform: translateY(-100%);
  transition: transform 0.4s cubic-bezier(0.77, 0, 0.175, 1);
}

.nav-mobile-overlay.open {
  transform: translateY(0);
}

/* Hero Section (Abstract Data Flow) */
.hero-section {
  padding: 12rem 0 6rem;
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 2;
}

.hero-visual {
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: 1;
  opacity: 0.3;
  background-image: 
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 40px 40px;
}

.node-system {
  position: absolute;
  top: 50%; right: 10%;
  transform: translateY(-50%);
  width: 400px; height: 400px;
}

.node {
  position: absolute;
  width: 12px; height: 12px;
  background: var(--color-blue);
  border-radius: 50%;
}
.node::after {
  content: '';
  position: absolute;
  top: -4px; left: -4px; right: -4px; bottom: -4px;
  border: 1px solid var(--color-blue);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
.node-1 { top: 20%; left: 20%; }
.node-2 { top: 80%; left: 40%; background: var(--color-green);}
.node-3 { top: 40%; left: 80%; background: var(--color-amber);}

.line {
  position: absolute;
  background: var(--color-line);
  height: 1px;
}
.line-1 { top: 20%; left: 20%; width: 60%; transform: rotate(15deg); transform-origin: left; }
.line-2 { top: 80%; left: 40%; width: 50%; transform: rotate(-45deg); transform-origin: left; }

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* Architecture Room Diagram */
.architecture-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.flow-step {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.flow-box {
  flex: 1;
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  padding: var(--space-sm);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-white);
}

.flow-arrow {
  color: var(--color-blue);
  font-size: 1.5rem;
}

/* Operating Model */
.operating-model {
  display: flex;
  border: 1px solid var(--color-line);
}

.op-step {
  flex: 1;
  padding: var(--space-md);
  border-right: 1px solid var(--color-line);
  position: relative;
}
.op-step:last-child { border-right: none; }
.op-step .num {
  font-family: var(--font-mono);
  color: var(--color-line);
  font-size: 2rem;
  position: absolute;
  top: 1rem; right: 1rem;
}

/* Forms */
.form-group { margin-bottom: var(--space-md); }
.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
  color: var(--color-white);
}
.form-control {
  width: 100%;
  padding: 1rem;
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  color: var(--color-white);
  font-family: var(--font-body);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-blue);
}
textarea.form-control { min-height: 150px; resize: vertical; }

.form-message {
  display: none;
  padding: 1rem;
  background: var(--color-green);
  color: var(--color-black);
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* Footer */
.site-footer {
  background: var(--color-black);
  border-top: 1px solid var(--color-line);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-links h4 {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-grey);
  margin-bottom: var(--space-sm);
}

.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: var(--color-white); font-size: 0.875rem; }

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-grey);
}

/* Cookie Consent */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-panel);
  border-top: 1px solid var(--color-blue);
  padding: var(--space-md);
  z-index: 1001;
  display: none; /* Controlled by JS */
}

.cookie-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.cookie-text { flex: 1; font-size: 0.875rem; }
.cookie-actions { display: flex; gap: var(--space-xs); }

/* Utilities */
.text-center { text-align: center; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.reveal { opacity: 0; transform: translateY(20px); transition: all 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Focus States for Accessibility */
:focus-visible {
  outline: 2px dashed var(--color-amber);
  outline-offset: 4px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Media Queries */
@media (max-width: 1200px) {
  .operating-model { flex-wrap: wrap; }
  .op-step { min-width: 33.33%; border-bottom: 1px solid var(--color-line); }
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .mobile-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .architecture-flow { flex-direction: column; }
  .flow-step { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
  .cookie-inner { flex-direction: column; text-align: center; }
  .op-step { min-width: 50%; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  .section { padding: var(--space-md) 0; }
  .hero-section { padding: 8rem 0 4rem; }
  .op-step { min-width: 100%; border-right: none; }
  .cookie-actions { flex-direction: column; width: 100%; }
  .cookie-actions .btn { width: 100%; }
}