/* Responsive Breakpoints */
/* Mobile: 0 - 767px */
/* Tablet: 768px - 1023px */
/* Desktop: 1024px+ */

/* Mobile Styles (Default) */
.page-content {
  padding-bottom: calc(var(--navbar-height-mobile) + var(--spacing-xl));
  min-height: 100vh;
}

/* Navigation - Mobile Bottom Floating Dock */
.navbar {
  position: fixed;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  right: var(--spacing-md);
  height: auto;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--glass-border);
  z-index: var(--z-navbar);
  padding: var(--spacing-sm) var(--spacing-xs);
  border-radius: var(--radius-xl);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: auto;
  max-width: 500px;
  margin: 0 auto;
  padding: 0;
}

.navbar-menu {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex: 1;
  gap: var(--spacing-xs);
}

.navbar-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  color: #d4d4d4;
  transition: color var(--animation-fast) var(--animation-curve);
  text-decoration: none;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

@media (prefers-color-scheme: light) {
  .navbar-item {
    color: #6d6d6d;
  }
}

.navbar-item.active {
  color: var(--color-primary);
  background: rgba(0, 122, 255, 0.08);
}

.navbar-label {
  font-size: var(--font-size-subhead);
  font-weight: var(--font-weight-medium);
}

.navbar-actions {
  display: none;
}

.navbar-brand {
  display: none;
}

/* Tablet Styles */
@media (min-width: 768px) {
  .page-content {
    padding-bottom: var(--spacing-xl);
  }
  
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* Desktop Styles */
@media (min-width: 1024px) {
  .page-content {
    padding-top: calc(var(--navbar-height-desktop) + var(--spacing-lg));
    padding-bottom: var(--spacing-xl);
  }
  
  /* Navigation - Desktop Floating Dock */
  .navbar {
    top: var(--spacing-md);
    bottom: auto;
    left: 50%;
    transform: translateX(-50%);
    width: auto;
    height: auto;
    border-top: none;
    border-radius: var(--radius-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) var(--spacing-xs);
  }
  
  .navbar-inner {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-sm);
    max-width: none;
  }
  
  .navbar-brand {
    display: flex !important;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-headline);
    font-weight: var(--font-weight-semibold);
    color: var(--color-label);
    text-decoration: none;
    padding-right: var(--spacing-lg);
    border-right: 1px solid var(--color-separator);
    white-space: nowrap;
    line-height: 1;
    margin-left: var(--spacing-sm);
  }
  
  .navbar-logo-light,
  .navbar-logo-dark {
    height: 24px;
    width: auto;
    vertical-align: middle;
    flex-shrink: 0;
  }
  
  .navbar-logo-dark {
    display: none;
  }
  
  .navbar-brand-text {
    font-size: 20px;
    vertical-align: middle;
    line-height: 1;
  }
  
  .navbar-menu {
    display: flex;
    align-items: center;
    gap: 2px;
  }
  
  .navbar-item {
    padding: var(--spacing-sm) 12px;
    border-radius: var(--radius-md);
    white-space: nowrap;
  }
  
  .navbar-item:hover {
    background: var(--color-surface);
  }
  
  .navbar-item.active {
    color: var(--color-primary);
    background: rgba(0, 122, 255, 0.08);
  }
  
  .navbar-actions {
    display: flex !important;
    align-items: center;
    gap: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-separator);
  }
}

/* Grid Layouts */
.grid-1 {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Hide/Show Utilities */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hide-tablet-up {
    display: none !important;
  }
}

@media (min-width: 1024px) {
  .hide-desktop {
    display: none !important;
  }
}

/* Touch-friendly adjustments */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
  }
  
  .form-input,
  .form-select {
    min-height: 48px;
  }
  
  .option-item {
    min-height: 48px;
  }
}

/* Dark mode logo switch */
@media (prefers-color-scheme: dark) {
  .navbar-logo-light {
    display: none;
  }
  
  .navbar-logo-dark {
    display: block;
  }
}