/* Layout CSS - Grid, Positioning, and Responsive Design */

/* Container Layouts */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--fluid {
  max-width: none;
  padding: 0;
}

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

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

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

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

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

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--center {
  place-items: center;
}

.grid--stretch {
  align-items: stretch;
}

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

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

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

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

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

.flex--between {
  justify-content: space-between;
}

.flex--around {
  justify-content: space-around;
}

.flex--evenly {
  justify-content: space-evenly;
}

.flex--start {
  justify-content: flex-start;
}

.flex--end {
  justify-content: flex-end;
}

.flex--1 {
  flex: 1;
}

/* Spacing Utilities */
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }
.gap-2xl { gap: var(--spacing-2xl); }

/* Section Layouts */
.section {
  padding: var(--spacing-3xl) 0;
}

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

.section--loose {
  padding: var(--spacing-4xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__title {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  text-shadow: 0 0 20px var(--color-primary);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Header Layout */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--bg-overlay);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-primary);
  transition: all var(--transition-normal);
}

.header--scrolled {
  background: rgba(0, 0, 0, 0.95);
  box-shadow: 0 4px 20px rgba(0, 255, 255, 0.3);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.header__logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  text-shadow: 0 0 15px var(--color-primary);
  transition: all var(--transition-fast);
}

.header__logo:hover {
  color: var(--color-secondary);
  text-shadow: 0 0 15px var(--color-secondary);
}

/* Main Content Layout */
.main {
  flex: 1;
  padding-top: 80px; /* Account for fixed header */
  min-height: 100vh;
}

.main--full {
  padding-top: 0;
}

/* Game Container Layout */
.game-container {
  position: relative;
  width: 100vw;
  height: 100dvh;
  background: radial-gradient(circle at center, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  overflow: hidden;
}

.game-container--menu {
  height: auto;
  min-height: 100vh;
}

/* UI Overlay Layout */
.ui-overlay {
  position: absolute;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 10;
  pointer-events: none;
  gap: var(--spacing-lg);
}

.ui-overlay__item {
  background: var(--bg-overlay);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary);
  font-size: var(--font-size-lg);
  font-weight: bold;
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--color-primary);
  pointer-events: auto;
  transition: all var(--transition-fast);
}

.ui-overlay__item:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px var(--color-primary);
}

/* Screen Layouts */
.screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.95);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.screen--active {
  opacity: 1;
  visibility: visible;
}

.screen__content {
  text-align: center;
  max-width: 600px;
  padding: var(--spacing-2xl);
}

.screen__title {
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 0 30px var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

.screen__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.screen__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

/* Footer Layout */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-primary);
  padding: var(--spacing-2xl) 0;
  margin-top: var(--spacing-3xl);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
}

.footer__section h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--spacing-sm);
}

.footer__links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

/* Sidebar Layout */
.sidebar {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--color-primary);
  z-index: var(--z-modal);
  transition: right var(--transition-normal);
  overflow-y: auto;
}

.sidebar--open {
  right: 0;
}

.sidebar__header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar__content {
  padding: var(--spacing-lg);
}

/* Positioning Utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.inset-0 {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .container {
    padding: 0 var(--spacing-lg);
  }
}

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

  .header__content {
    padding: var(--spacing-sm) 0;
  }

  .main {
    padding-top: 70px;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .section__title {
    font-size: var(--font-size-2xl);
  }

  .screen__title {
    font-size: var(--font-size-3xl);
  }

  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .ui-overlay {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .ui-overlay__item {
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .screen__actions {
    width: 100%;
  }

  .btn {
    width: 100%;
  }
}

/* Animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Animation Utilities */
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-slide-in-right {
  animation: slideInRight 0.3s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.3s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-out;
}
