/* Layout System - GraymatterLab Website */

/* Container System */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gms-space-4);
}

.container--wide {
  max-width: 1400px;
}

.container--narrow {
  max-width: 800px;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--gms-space-6);
}

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

@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.gap-1 { gap: var(--gms-space-1); }
.gap-2 { gap: var(--gms-space-2); }
.gap-3 { gap: var(--gms-space-3); }
.gap-4 { gap: var(--gms-space-4); }
.gap-6 { gap: var(--gms-space-6); }
.gap-8 { gap: var(--gms-space-8); }

/* Section Spacing */
.section {
  padding: var(--gms-space-16) 0;
}

.section--sm {
  padding: var(--gms-space-12) 0;
}

.section--lg {
  padding: var(--gms-space-24) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--gms-space-12) 0;
  }
  
  .section--sm {
    padding: var(--gms-space-8) 0;
  }
  
  .section--lg {
    padding: var(--gms-space-16) 0;
  }
}

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--gms-bg-secondary);
  border-bottom: 1px solid var(--gms-silver-gray);
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  padding: 0 var(--gms-space-4);
}

.logo {
  font-size: var(--gms-heading-2);
  font-weight: var(--gms-font-bold);
  color: var(--gms-text-primary);
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--gms-space-8);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: var(--gms-space-4);
  margin: 0;
  padding: 0;
}

.nav__link {
  font-weight: var(--gms-font-medium);
  color: var(--gms-text-secondary);
  text-decoration: none;
  padding: var(--gms-space-2) var(--gms-space-3);
  border-radius: var(--gms-radius-md);
  transition: all 0.2s ease;
  min-height: var(--gms-touch-target-min);
  display: flex;
  align-items: center;
}

.nav__link:hover,
.nav__link--active {
  color: var(--gms-bright-blue);
  background: rgba(0, 170, 231, 0.1);
}

.nav__link:focus-visible {
  outline: 2px solid var(--gms-bright-blue);
  outline-offset: 2px;
}

.nav__cta {
  margin-left: var(--gms-space-4);
}

/* Mobile Navigation */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--gms-heading-4);
  color: var(--gms-text-primary);
  cursor: pointer;
  min-height: var(--gms-touch-target-min);
  min-width: var(--gms-touch-target-min);
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--gms-bg-secondary);
    border-top: 1px solid var(--gms-silver-gray);
    flex-direction: column;
    padding: var(--gms-space-4);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__list {
    flex-direction: column;
    width: 100%;
    gap: var(--gms-space-2);
  }
  
  .nav__link {
    justify-content: center;
    padding: var(--gms-space-3);
  }
  
  .nav__cta {
    margin-left: 0;
    margin-top: var(--gms-space-4);
    width: 100%;
  }
  
  .nav__cta .gms-button {
    width: 100%;
  }
}

/* Main Content */
.main {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--gms-bg-primary) 0%, var(--gms-bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23d0d0d0" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: left;
  padding: var(--gms-space-24) 0;
}

.hero__title {
  margin-bottom: var(--gms-space-6);
  color: var(--gms-text-primary);
}

.hero__subtitle {
  margin-bottom: var(--gms-space-8);
  color: var(--gms-text-secondary);
  max-width: 600px;
}

.hero__actions {
  display: flex;
  gap: var(--gms-space-4);
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(360px, 1fr));
  gap: var(--gms-space-4);
  margin-top: var(--gms-space-12);
  max-width: 1300px;
  margin-left: auto;
  margin-right: auto;
}

.feature-card {
  text-align: center;
  padding: var(--gms-space-8);
  background: var(--gms-bg-secondary);
  border-radius: var(--gms-radius-lg);
  box-shadow: var(--gms-shadow-card);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--gms-shadow-card-hover);
}

.feature-card__number {
  font-size: 5rem;
  font-weight: 900;
  color: var(--gms-bright-blue);
  margin: 0 auto var(--gms-space-4);
  display: block;
  text-align: center;
  line-height: 0.9;
  letter-spacing: -0.02em;
  font-family: var(--gms-font-sans);
}

.feature-card__title {
  margin-bottom: var(--gms-space-3);
}

.feature-card__description {
  color: var(--gms-text-secondary);
}

/* Accordion Component */
.accordion-container {
  display: flex;
  flex-direction: column;
  gap: var(--gms-space-4);
}

.accordion-item {
  background: var(--gms-bg-secondary);
  border-radius: var(--gms-radius-lg);
  box-shadow: var(--gms-shadow-card);
  overflow: hidden;
  transition: all 0.3s ease;
}

.accordion-item:hover {
  box-shadow: var(--gms-shadow-card-hover);
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gms-space-6);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
  min-height: var(--gms-touch-target-min);
}

.accordion-header:hover {
  background: rgba(0, 170, 231, 0.05);
}

.accordion-header:focus-visible {
  outline: 2px solid var(--gms-bright-blue);
  outline-offset: 2px;
}

.accordion-header h3 {
  margin: 0;
  color: var(--gms-text-primary);
}

.accordion-chevron {
  font-size: 16px;
  color: var(--gms-bright-blue);
  transition: transform 0.3s ease;
  user-select: none;
}

.accordion-header[aria-expanded="true"] .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-header[aria-expanded="true"] + .accordion-content {
  max-height: 500px;
}

.accordion-panel {
  padding: 0 var(--gms-space-6) var(--gms-space-6);
}

.accordion-panel p {
  margin: 0;
  color: var(--gms-text-secondary);
}

/* Footer */
.footer {
  background: var(--gms-gunmetal-gray);
  color: var(--gms-text-inverse);
  padding: var(--gms-space-16) 0 var(--gms-space-8);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--gms-space-8);
  margin-bottom: var(--gms-space-8);
}

.footer__section h3 {
  margin-bottom: var(--gms-space-4);
  color: var(--gms-text-inverse);
}

.footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__links li {
  margin-bottom: var(--gms-space-2);
}

.footer__links a {
  color: var(--gms-silver-gray);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__links a:hover {
  color: var(--gms-bright-blue);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--gms-space-8);
  border-top: 1px solid var(--gms-silver-gray);
  color: var(--gms-silver-gray);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .hero__content {
    padding: var(--gms-space-16) 0;
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero__actions .gms-button {
    width: 100%;
    max-width: 300px;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    max-width: none;
  }
  
  .product-cards {
    grid-template-columns: 1fr;
  }

  .how-we-help-layout {
    grid-template-columns: 1fr !important;
    gap: var(--gms-space-6) !important;
  }
}