/* KirkNetworks Brand System & Design Tokens */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  /* Color Palette */
  --color-ink-900: #0F151B;
  --color-ink-800: #1C2530; /* Kirk Charcoal */
  --color-ink-700: #2E3A47;
  --color-ink-600: #4A5766;
  --color-ink-400: #8A96A3;
  --color-ink-300: #C3CBD3;
  --color-ink-200: #E6EAEE; /* Rule */
  --color-ink-100: #F5F7F9; /* Canvas */
  --color-accent: #3B82F6;  /* Signal Blue */
  --color-accent-tint: #EBF2FE;
  
  /* Semantic Colors */
  --color-success: #12805C;
  --color-warning: #B26A00;
  --color-critical: #C2382B;

  /* Typography */
  --font-primary: 'IBM Plex Sans', sans-serif;
  --font-accent: 'IBM Plex Mono', monospace;

  /* Layout */
  --container-max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --border-radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-ink-100);
  color: var(--color-ink-800);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

/* Typography Classes */
.display-text { font-size: 56px; font-weight: 600; line-height: 1.1; color: var(--color-ink-900); }
.h1-text { font-size: 40px; font-weight: 600; line-height: 1.2; color: var(--color-ink-900); }
.h2-text { font-size: 30px; font-weight: 600; line-height: 1.3; color: var(--color-ink-900); }
.h3-text { font-size: 22px; font-weight: 500; line-height: 1.4; color: var(--color-ink-900); }
.body-text { font-size: 17px; font-weight: 400; color: var(--color-ink-600); }
.small-text { font-size: 14px; font-weight: 400; color: var(--color-ink-600); }
.label-text { 
  font-family: var(--font-accent); 
  font-size: 12px; 
  text-transform: uppercase; 
  letter-spacing: 0.1em; 
  color: var(--color-ink-700); 
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-ink-800);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-ink-900);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-ink-800);
  border: 1px solid var(--color-ink-300);
}

.btn-outline:hover {
  border-color: var(--color-ink-600);
  background-color: var(--color-ink-100);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.btn-accent:hover {
  background-color: #2563EB;
}

/* Badges / Pills */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--color-ink-200);
  color: var(--color-ink-700);
}

.badge-operational {
  background-color: #E6F4EA;
  color: var(--color-success);
}
.badge-operational::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  margin-right: 8px;
}

.badge-blue {
  background-color: var(--color-accent-tint);
  color: var(--color-accent);
}

/* Layout Utilities */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-col { flex-direction: column; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.text-center { text-align: center; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

/* Header & Nav */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(245, 247, 249, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-ink-200);
  padding: var(--spacing-sm) 0;
}

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

.logo-container img {
  height: 32px;
  display: block;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--color-ink-800);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-nav-toggle svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-ink-800);
}

/* Hero Section */
.hero {
  padding-top: calc(var(--spacing-xl) + 80px); /* Account for fixed header */
  padding-bottom: var(--spacing-xl);
  text-align: center;
}

.hero-subtitle {
  max-width: 800px;
  margin: var(--spacing-md) auto;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header .label-text {
  display: inline-block;
  margin-bottom: var(--spacing-xs);
  color: var(--color-accent);
}

/* Service Cards */
.card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: 0 12px 24px rgba(15, 21, 27, 0.05);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-accent-tint);
  color: var(--color-accent);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-title {
  margin-bottom: var(--spacing-xs);
}

.card-desc {
  color: var(--color-ink-600);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.card-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.card-features li {
  display: flex;
  align-items: flex-start;
  font-size: 14px;
  color: var(--color-ink-700);
  margin-bottom: 8px;
}

.card-features li svg {
  width: 16px;
  height: 16px;
  margin-right: 8px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Product Cards */
.product-card {
  display: flex;
  flex-direction: column;
  background-color: #FFFFFF;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.product-image {
  background-color: var(--color-ink-100);
  padding: var(--spacing-lg) var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid var(--color-ink-200);
}

.product-image img {
  max-height: 80px;
  max-width: 100%;
}

.product-content {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--spacing-sm);
}

/* Value Props */
.value-prop {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.value-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background-color: var(--color-ink-200);
  color: var(--color-ink-800);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Contact Cards */
.contact-card {
  text-align: center;
  padding: var(--spacing-md);
  background-color: #FFFFFF;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.contact-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-sm);
  background-color: var(--color-accent-tint);
  color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card-value {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink-900);
  margin-bottom: 8px;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--color-ink-400);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-accent);
  font-size: 12px;
  text-transform: uppercase;
  transition: color 0.2s;
}

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

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: var(--color-ink-800);
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s forwards, fadeOut 0.3s forwards 2.7s;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* Footer */
.site-footer {
  background-color: var(--color-ink-900);
  color: var(--color-ink-300);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-logo {
  filter: brightness(0) invert(1);
  height: 32px;
  margin-bottom: var(--spacing-sm);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--color-ink-400);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid var(--color-ink-800);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 992px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
  .display-text { font-size: 48px; }
}

@media (max-width: 768px) {
  .nav-links, .header-actions { display: none; }
  .mobile-nav-toggle { display: block; }
  
  .grid-cols-2, .grid-cols-3, .grid-cols-4 { grid-template-columns: 1fr; }
  
  .display-text { font-size: 40px; }
  .h1-text { font-size: 32px; }
  
  .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .footer-bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
}

/* Card Graphics */
.card-graphic {
  width: calc(100% + calc(var(--spacing-md) * 2));
  margin: calc(var(--spacing-md) * -1) calc(var(--spacing-md) * -1) 0;
  max-height: 200px;
  object-fit: cover;
  border-top-left-radius: var(--border-radius);
  border-top-right-radius: var(--border-radius);
}

/* Contact Layout & Form */
.contact-layout {
  display: block;
}

@media (max-width: 992px) {
  .contact-layout { display: block; }
}

.contact-info {
  /* Info sidebar styles if any */
}

.contact-form-container {
  padding: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-sm);
}

.form-group .label-text {
  margin-bottom: 8px;
  color: var(--color-ink-900);
}

.form-control {
  padding: 12px 16px;
  border: 1px solid var(--color-ink-300);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 16px;
  color: var(--color-ink-900);
  background-color: #FFFFFF;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-tint);
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-ink-800);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}