/* Layout - Grid, Flex, Containers */

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

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

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

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

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

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Flex */
.flex {
  display: flex;
}

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

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

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

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Main Layout */
.layout {
  display: flex;
  flex-direction: column;
  height: 100vh;      /* fallback for old browsers */
  height: 100dvh;     /* dynamic — fixes iOS browser chrome */
}

.layout-main {
  flex: 1;
  display: flex;
  /* min-height: 0 is required so layout-main can shrink below its content
     size — without it, the default min-height: auto makes layout-main grow
     to fit its content, defeating .layout-content's overflow-y: auto and
     breaking inner scrolling on any page taller than the viewport. */
  min-height: 0;
}

.layout-content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* Navbar */
.navbar {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  padding: calc(var(--space-md) + var(--safe-area-top)) var(--space-md) var(--space-md) var(--space-md);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .navbar-inner {
    padding: 0 var(--space-lg);
  }
}

.navbar-brand {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}

.navbar-menu {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
}

@media (max-width: 767px) {
  .navbar-toggle {
    display: block;
  }
}

.navbar-nav {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

@media (max-width: 767px) {
  .navbar-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    padding: var(--space-md);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
  }

  .navbar-nav.active {
    display: flex;
  }
}

.navbar-nav a {
  color: var(--color-text);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* Sidebar */
.sidebar {
  width: 250px;
  background-color: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border-light);
  padding: var(--space-lg);
  overflow-y: auto;
  display: none;
}

@media (min-width: 1024px) {
  .sidebar {
    display: block;
  }
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav li {
  margin-bottom: var(--space-md);
}

.sidebar-nav a {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Footer */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-lg) var(--space-md) calc(var(--space-lg) + var(--safe-area-bottom)) var(--space-md);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: auto;
}

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* Display Utilities */
.hidden { display: none !important; }
.visible { display: block; }

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

/* Bottom Navigation Bar */
.bottom-nav {
  display: none; /* Hidden by default, shown on mobile below */
}

@media (max-width: 767px) {
  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border-light);
    padding-bottom: var(--safe-area-bottom);
    z-index: var(--z-fixed);
    box-shadow: 0 -1px 8px rgba(0, 0, 0, 0.08);
  }

  /* Push content up so it's not hidden behind bottom nav */
  .layout-main {
    padding-bottom: calc(56px + var(--safe-area-bottom));
  }

  /* Hide top navbar hamburger and nav links on mobile */
  .navbar-toggle,
  .navbar-nav {
    display: none;
  }

  /* Hide footer on mobile (replaced by bottom nav) */
  .footer {
    display: none;
  }

  /* Adjust toast container for bottom nav height */
  .toast-container {
    bottom: calc(var(--space-lg) + 56px + var(--safe-area-bottom));
  }
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) 0;
  color: var(--color-text-muted);
  text-decoration: none;
  min-height: 56px;
  transition: color var(--transition-fast);
  gap: 2px;
}

.bottom-nav-item.active {
  color: var(--color-primary);
}

.bottom-nav-icon {
  font-size: 20px;
  line-height: 1;
}

.bottom-nav-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* Center action button elevated style */
.bottom-nav-item--primary .bottom-nav-icon {
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 300;
  margin-top: -14px; /* elevated above bar */
  box-shadow: var(--shadow-md);
}

.bottom-nav-item--primary {
  color: var(--color-primary);
}

.bottom-nav-item--primary.active .bottom-nav-icon {
  background-color: var(--color-primary-dark);
}

/* Hide app chrome (navbar, sidebar, bottom nav, footer) when user is not authenticated */
body:not(.authenticated) .navbar,
body:not(.authenticated) .sidebar,
body:not(.authenticated) .bottom-nav,
body:not(.authenticated) .footer {
  display: none;
}