/* ==========================================================================
   Layout Styles - BEM Methodology
   ========================================================================== */

/* ==========================================================================
   Main Layout
   ========================================================================== */

.layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout__main {
  flex: 1;
  padding-top: var(--nav-height);
}

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

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(13, 19, 33, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-bg-tertiary);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav__brand:hover {
  color: var(--color-accent-primary);
}

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

.nav__link {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

.nav__link--active {
  color: var(--color-accent-primary);
}

/* Mobile nav toggle (hidden by default) */
.nav__toggle {
  display: none;
  padding: var(--spacing-sm);
  background: none;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
}

.nav__toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: relative;
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: currentColor;
}

.nav__toggle-icon::before {
  top: -7px;
}

.nav__toggle-icon::after {
  top: 7px;
}

/* Mobile responsive */
@media (max-width: 640px) {
  .nav__toggle {
    display: block;
  }
  
  .nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-bg-tertiary);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav__menu--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__link {
    width: 100%;
    padding: var(--spacing-md);
    justify-content: center;
  }
  
  .nav__actions {
    width: 100%;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-bg-tertiary);
  }
  
  .nav__actions .btn {
    width: 100%;
  }
}

/* ==========================================================================
   Flash Messages
   ========================================================================== */

.flash {
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  animation: flash-slide-in 0.3s ease-out;
}

@keyframes flash-slide-in {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.flash--notice {
  background-color: rgba(92, 185, 123, 0.15);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

.flash--alert {
  background-color: rgba(224, 92, 107, 0.15);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.flash--warning {
  background-color: rgba(212, 160, 76, 0.15);
  border: 1px solid var(--color-warning);
  color: var(--color-warning);
}

.flash--info {
  background-color: rgba(92, 142, 212, 0.15);
  border: 1px solid var(--color-info);
  color: var(--color-info);
}

.flash__container {
  position: fixed;
  top: calc(var(--nav-height) + var(--spacing-md));
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  width: 100%;
  max-width: 600px;
  padding: 0 var(--spacing-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-bg-tertiary);
}

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

.footer__links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__link {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__copyright {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

@media (min-width: 640px) {
  .footer__container {
    flex-direction: row;
    justify-content: space-between;
  }
}