/**
 * Webgentic - Layout System
 * Grid, containers, spacing, and structural elements
 */

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

/* === Root & Body === */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-primary);
  background: #ffffff;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

/* === Container System === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container--content {
  max-width: var(--container-content);
}

.container--text {
  max-width: var(--container-text);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

@media (min-width: 1441px) {
  .container {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }
}

/* === Grid System === */
.grid {
  display: grid;
  gap: var(--grid-gap-mobile);
}

@media (min-width: 768px) {
  .grid {
    gap: var(--grid-gap);
  }
}

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

.grid--cols-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid--cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid--cols-3 {
  grid-template-columns: 1fr;
}

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

@media (min-width: 1025px) {
  .grid--cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid--cols-4 {
  grid-template-columns: 1fr;
}

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

@media (min-width: 1025px) {
  .grid--cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

.flex--row {
  flex-direction: row;
}

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

.flex--wrap {
  flex-wrap: wrap;
}

.flex--center {
  justify-content: center;
  align-items: center;
}

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

.flex--start {
  justify-content: flex-start;
  align-items: center;
}

.flex--end {
  justify-content: flex-end;
  align-items: center;
}

.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }

/* === Section Spacing === */
.section {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--spacing-section);
    padding-bottom: var(--spacing-section);
  }
}

.section--sm {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .section--sm {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
  }
}

.section--hero {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

@media (min-width: 768px) {
  .section--hero {
    min-height: 85vh;
  }
}

/* === Background Variations === */
.bg-dark {
  background-color: var(--bg-dark);
  color: #ffffff;
}

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

.bg-gradient {
  background: var(--gradient-hero);
  color: var(--color-primary);
}

.bg-gradient-cognitive {
  background: var(--gradient-cognitive);
  color: var(--color-primary);
}

.bg-gradient-light {
  background: var(--bg-gradient-light);
  color: var(--color-primary);
}

/* === Content Layout Patterns === */

/* Alternating Text/Image Layout */
.content-split {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .content-split {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-16);
  }
}

.content-split--reverse {
  direction: ltr;
}

@media (min-width: 768px) {
  .content-split--reverse .content-split__text {
    order: 2;
  }

  .content-split--reverse .content-split__visual {
    order: 1;
  }
}

.content-split__text {
  max-width: 100%;
}

.content-split__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Text Content Width Control */
.text-width-60 {
  max-width: 60%;
}

@media (max-width: 767px) {
  .text-width-60 {
    max-width: 100%;
  }
}

.text-width-70 {
  max-width: 70%;
}

@media (max-width: 767px) {
  .text-width-70 {
    max-width: 100%;
  }
}

/* === Spacing Utilities === */
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-24 { margin-top: var(--space-24); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }

.pt-0 { padding-top: 0; }
.pt-4 { padding-top: var(--space-4); }
.pt-8 { padding-top: var(--space-8); }
.pt-12 { padding-top: var(--space-12); }
.pt-16 { padding-top: var(--space-16); }

.pb-0 { padding-bottom: 0; }
.pb-4 { padding-bottom: var(--space-4); }
.pb-8 { padding-bottom: var(--space-8); }
.pb-12 { padding-bottom: var(--space-12); }
.pb-16 { padding-bottom: var(--space-16); }

/* === Visibility Utilities === */
.hidden {
  display: none !important;
}

@media (max-width: 767px) {
  .hidden-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hidden-desktop {
    display: none !important;
  }
}

/* === Aspect Ratios === */
.aspect-16-9 {
  aspect-ratio: 16 / 9;
}

.aspect-4-3 {
  aspect-ratio: 4 / 3;
}

.aspect-square {
  aspect-ratio: 1 / 1;
}

/* === Positioning === */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.sticky {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

/* === Overflow === */
.overflow-hidden {
  overflow: hidden;
}

.overflow-x-hidden {
  overflow-x: hidden;
}

/* === Text Alignment === */
.text-left {
  text-align: left;
}

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

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

@media (max-width: 767px) {
  .text-center-mobile {
    text-align: center;
  }
}

/* === Max Width Utilities === */
.max-w-full {
  max-width: 100%;
}

.max-w-screen {
  max-width: 100vw;
}

/* === Image Handling === */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* === Focus Visible (Accessibility) === */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ================================
   P1 ENHANCEMENTS - NAVIGATION
   ================================ */

/* Navigation Dropdowns */
.site-nav__dropdown {
  position: relative;
}

.site-nav__dropdown--mega {
  position: static;
}

.site-nav__link--dropdown {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  cursor: pointer;
  pointer-events: auto;
}

.dropdown-arrow {
  transition: transform var(--transition-base);
}

.site-nav__dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.site-nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 0;
  padding-top: var(--space-4);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding-left: var(--space-2);
  padding-right: var(--space-2);
  padding-bottom: var(--space-2);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  display: none;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 100;
}

/* Add invisible hover bridge for regular dropdowns */
.site-nav__dropdown-menu::before {
  content: '';
  position: absolute;
  top: calc(-1 * var(--space-4));
  left: 0;
  right: 0;
  height: var(--space-4);
}

.site-nav__dropdown:hover .site-nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
  display: block;
}

.dropdown-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-base);
}

.dropdown-item:hover {
  background: rgba(0, 0, 0, 0.04);
}

.dropdown-item__title {
  font-size: 0.9375rem;
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  margin-bottom: 2px;
}

.dropdown-item__metric {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* Features Mega-Menu */
.site-nav__mega-menu {
  position: absolute;
  top: 40px;
  left: 0;
  right: 0;
  margin-top: 0;
  padding-top: var(--space-4);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  padding-left: var(--space-8);
  padding-right: var(--space-8);
  padding-bottom: var(--space-8);
  opacity: 0;
  visibility: hidden;
  display: none;
  transform: translateY(0);
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 100;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Add invisible hover bridge */
.site-nav__mega-menu::before {
  content: '';
  position: absolute;
  top: calc(-1 * var(--space-4));
  left: 0;
  right: 0;
  height: var(--space-4);
}

.site-nav__dropdown--mega:hover .site-nav__mega-menu {
  opacity: 1;
  visibility: visible;
  display: grid;
}

.mega-menu__section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mega-menu__title {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.mega-menu__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-base);
}

.mega-menu__item:hover {
  background: rgba(0, 0, 0, 0.04);
}

.mega-menu__item-title {
  font-size: 0.9375rem;
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
}

.mega-menu__item-desc {
  font-size: 0.8125rem;
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* Status Dot */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  margin-right: var(--space-2);
  animation: pulse-status 2s ease-in-out infinite;
}

.status-dot--inline {
  width: 6px;
  height: 6px;
  margin-right: var(--space-1);
  vertical-align: middle;
}

@keyframes pulse-status {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/* ================================
   P1 ENHANCEMENTS - PERSISTENT CTA
   ================================ */

/* Desktop Persistent CTA (Right Edge) */
.persistent-cta {
  position: fixed;
  right: var(--space-6);
  top: 50%;
  transform: translateY(-50%);
  z-index: 500;
  display: none;
}

@media (min-width: 1025px) {
  .persistent-cta {
    display: block;
  }
}

.persistent-cta__button {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  transition: all var(--transition-base);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.persistent-cta__button:hover {
  transform: translateX(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: rgba(0, 0, 0, 0.2);
}

.persistent-cta__icon {
  width: 16px;
  height: 16px;
  stroke: var(--color-primary);
  flex-shrink: 0;
}

.persistent-cta__text {
  font-size: 0.8125rem;
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

/* Mobile Sticky CTA (Bottom) */
.mobile-sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding: var(--space-4);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  z-index: 500;
  transform: translateY(0);
  transition: transform var(--transition-base);
  display: none;
}

.mobile-sticky-cta.hidden {
  transform: translateY(100%);
}

@media (max-width: 1024px) {
  .mobile-sticky-cta {
    display: block;
  }
}

.mobile-sticky-cta__button {
  display: block;
  width: 100%;
  padding: var(--space-4);
  background: var(--color-primary);
  color: #ffffff;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  font-size: 0.9375rem;
  transition: all var(--transition-base);
}

.mobile-sticky-cta__button:hover {
  background: var(--color-text-body);
}