/*
 * Sticky navigation bar, glass-morphism backdrop, nav drawer, and search overlay.
 *
 * The nav uses a frosted-glass backdrop (backdrop-filter: blur). On mobile,
 * the drawer slides down beneath the nav bar. The search overlay is a
 * full-screen modal triggered from the nav search icon.
 *
 * Collaborators: navigation_controller.js, search_overlay_controller.js,
 *   phone_fab_controller.js, base.css (tokens)
 */

nav {
  margin: 0 calc(-1 * var(--gingham-gap));
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  min-height: 2.75rem;

  position: sticky;
  top: 0;
  z-index: 10;

  border-bottom: 2px solid var(--red);
  box-shadow: var(--shadow-nav);
}

nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: calc(-1 * var(--drawer-height, 0px));
  background-color: rgba(250, 248, 245, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: -1;
}

nav:has(.nav-drawer[aria-hidden="false"]) {
  border-bottom-color: transparent;
  box-shadow: none;
}


nav a {
  font-family: var(--font-body);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.5rem 0.9rem;
  line-height: 1.5;
  color: var(--text);
  border-radius: 0.4rem;
  transition: color var(--duration-normal) ease, background-color var(--duration-slow) ease-out;
}

@media (hover: hover) {
  nav a:hover {
    color: var(--red);
    background-color: var(--hover-bg);
  }
}

nav a[aria-current="page"] {
  color: var(--red);
  background-color: var(--hover-bg);
}

@media (hover: hover) {
  nav a[aria-current="page"]:hover {
    background-color: var(--hover-bg-strong);
  }
}

nav > div:first-child {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  padding-left: 0.35rem;
}

.nav-compact .nav-links a {
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.45rem 0.5rem 0.3rem;
  text-align: center;
}

.nav-compact .nav-links a span {
  font-size: 0.55rem;
  letter-spacing: 0.08em;
}

.nav-compact .nav-links .nav-icon {
  width: 1.35rem;
  height: 1.35rem;
}

nav > div:not(:first-child):not(.nav-drawer) {
  display: flex;
  gap: 0.4rem;
  padding: 0.4rem;
  align-self: center;
}


.nav-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  padding: 0.5rem 0.6rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
  border-radius: 0.4rem;
  transition: color var(--duration-normal) ease, background-color var(--duration-slow) ease-out;
}

@media (hover: hover) {
  .nav-icon-btn:hover {
    color: var(--red);
    background-color: var(--hover-bg);
  }
}

.nav-icon-btn:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
  border-radius: 2px;
}

@media (hover: hover) {
  nav a:hover {
    color: var(--red);
  }
}

nav a:focus {
  color: var(--red);
}

nav a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
  border-radius: 2px;
}

.nav-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
}

/* Hamburger menu — visible only at the compact breakpoint */

.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem 0.9rem;
  color: var(--text);
  border-radius: 0.4rem;
  transition: color var(--duration-normal) ease, background-color var(--duration-slow) ease-out;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
  .hamburger-btn:hover {
    color: var(--red);
    background-color: var(--hover-bg);
  }
}

.hamburger-btn:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
  border-radius: 2px;
}

.hamburger-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.hamburger-icon rect {
  transform-origin: 12px 12px;
  transition: transform 250ms ease, opacity var(--duration-normal) ease;
}

.hamburger-top {
  transform: translateY(-5px) rotate(0deg);
}

.hamburger-mid {
  transform: translateY(0) rotate(0deg);
}

.hamburger-bot {
  transform: translateY(5px) rotate(0deg);
}

.hamburger-btn[aria-expanded="true"] .hamburger-top,
.fab-button[aria-expanded="true"] .hamburger-top {
  transform: translateY(0) rotate(45deg);
}

.hamburger-btn[aria-expanded="true"] .hamburger-mid,
.fab-button[aria-expanded="true"] .hamburger-mid {
  opacity: 0;
}

.hamburger-btn[aria-expanded="true"] .hamburger-bot,
.fab-button[aria-expanded="true"] .hamburger-bot {
  transform: translateY(0) rotate(-45deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.nav-drawer {
  display: none;
}

.nav-hamburger .hamburger-btn {
  display: flex;
}

.nav-hamburger .nav-links {
  display: none;
}

.nav-hamburger .nav-drawer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-slow) ease;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background-color: transparent;
  border-bottom: 2px solid var(--red);
  box-shadow: var(--shadow-nav);
  clip-path: inset(0 -20px -20px -20px);
}

.nav-hamburger .nav-drawer[aria-hidden="false"] {
  grid-template-rows: 1fr;
}

.nav-hamburger .nav-drawer-inner {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.nav-hamburger .nav-drawer a {
  padding: 0.65rem 1rem;
  width: fit-content;
}
@media (prefers-color-scheme: dark) {
  nav::before { background-color: rgba(30, 27, 24, 0.82); }
}
/************************/
/* Search Overlay       */
/************************/

.search-overlay {
  border: none;
  background: transparent;
  padding: 0;
  width: min(90vw, 38rem);
  margin: 0 auto;
  margin-top: 15vh;
  overflow: visible;
  font-family: var(--font-body);
}

.search-overlay[open] {
  display: flex;
  flex-direction: column;
}

.search-overlay::backdrop {
  background: var(--dialog-backdrop);
  animation: fade-in 200ms ease-out;
}

.search-panel {
  background: var(--ground);
  border: none;
  border-radius: 0.75rem;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25), 0 2px 12px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  animation: bloop 250ms cubic-bezier(0.16, 0.75, 0.40, 1);
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.75rem 1rem;
}

.search-pill-area { display: contents; }

.search-icon {
  font-size: 1.35rem;
  flex-shrink: 0;
  color: var(--text-soft);
  line-height: 1;
}


.search-input--hinted {
  text-decoration: underline;
  text-decoration-color: var(--text-light);
  text-underline-offset: 0.2em;
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--text);
  outline: none;
  font-family: inherit;
  letter-spacing: -0.01em;
}

.search-input::placeholder {
  color: var(--text-light);
  font-weight: 300;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0.25rem 0;
  max-height: 24rem;
  overflow-y: auto;
  border-top: 1px solid var(--rule);
}

.search-results:empty {
  display: none;
}

.search-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
  margin: 0.15rem 0.4rem;
  border-radius: 0.4rem;
}

.search-result.selected {
  background: var(--red);
  color: white;
}

@media (hover: hover) {
  .search-result:hover:not(.selected) {
    background: var(--hover-bg);
  }
}

.search-result.selected .search-result-title {
  color: white;
}

.search-result.selected .search-result-category {
  color: rgba(255, 255, 255, 0.7);
}

.search-result-title {
  color: var(--text);
  font-size: 0.95rem;
}

.search-result-category {
  font-size: 0.8rem;
  color: var(--text-soft);
  flex-shrink: 0;
}

.search-no-results {
  padding: 1rem;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.9rem;
}


/************************/
/* Grocery Section      */
/************************/

.grocery-section {
  list-style: none;
  background: color-mix(in srgb, var(--smart-green-text) 6%, var(--ground));
  border: 1px solid color-mix(in srgb, var(--smart-green-text) 20%, var(--rule));
  border-radius: 0.5rem;
  margin: 0.15rem 0.4rem;
  overflow: hidden;
  padding: 0.3rem 0;
}

.grocery-section--above {
  margin-bottom: 0.4rem;
}

.grocery-section--below {
  margin-top: 0.4rem;
}

.grocery-section-header {
  font-size: 0.7rem;
  font-weight: 600;
  color: color-mix(in srgb, var(--smart-green-text) 70%, var(--text-soft));
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.15rem 0.7rem;
}

.grocery-item-row {
  margin: 0.1rem 0.3rem;
  border-radius: 0.35rem;
  padding: 0.4rem 0.4rem 0.4rem 0.7rem;
  font-size: 0.9rem;
}

.grocery-item-row.selected {
  background: color-mix(in srgb, var(--smart-green-text) 18%, var(--ground));
}

.grocery-item-row.selected .search-result-title {
  color: var(--text);
}

.grocery-item-row.selected .search-result-category {
  color: var(--text-soft);
}

@media (hover: hover) {
  .grocery-item-row:hover:not(.selected) {
    background: color-mix(in srgb, var(--smart-green-text) 10%, var(--ground));
  }
}

.grocery-action-flash {
  color: var(--smart-green-text);
  font-weight: 500;
  transition: opacity 300ms ease;
}


/**********************/
/* Phone FAB          */
/**********************/

.phone-fab {
  display: none;
}

@media (pointer: coarse) and (hover: none) and (max-width: 600px) {
  nav[data-controller="nav-menu"] {
    display: none;
  }

  .phone-fab {
    display: block;
  }

  /* FAB button — fixed circle at bottom center */
  .fab-button {
    position: fixed;
    bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    border: 1px solid var(--rule);
    background-color: rgba(250, 248, 245, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.04);
    -webkit-tap-highlight-color: transparent;
    transition: color var(--duration-normal) ease;
  }

  .fab-button:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 2px;
  }

  .fab-button .hamburger-icon {
    width: 1.25rem;
    height: 1.25rem;
  }

  .fab-button[hidden] { display: none; }

  /* Panel — frosted glass menu above FAB. Always in DOM at opacity:0 /
     pointer-events:none to avoid layout flash from hidden→visible. */
  .fab-panel {
    position: fixed;
    bottom: calc(4rem + env(safe-area-inset-bottom, 0px));
    left: 0;
    right: 0;
    margin: 0 auto;
    width: min(85vw, 18rem);
    z-index: 19;
    border-radius: 0.75rem;
    background-color: rgba(250, 248, 245, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: scale(0.95);
    transition: opacity 150ms ease, transform 150ms ease, visibility 0s 150ms;
  }

  .fab-panel.fab-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scale(1);
    transition: opacity 150ms ease, transform 250ms cubic-bezier(0.16, 0.75, 0.40, 1), visibility 0s;
  }

  /* Panel content: nav links stacked vertically */
  .fab-nav-links {
    display: flex;
    flex-direction: column;
  }

  /* Mirrors nav a styles — kept in sync manually (these rarely change) */
  .fab-nav-links a {
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 0.65rem 0.75rem;
    line-height: 1.5;
    color: var(--text);
    border-radius: 0.4rem;
    transition: color var(--duration-normal) ease,
                background-color var(--duration-slow) ease-out;
  }

  .fab-nav-links a:hover {
    color: var(--red);
    background-color: var(--hover-bg);
  }

  .fab-nav-links a[aria-current="page"] {
    color: var(--red);
    background-color: var(--hover-bg);
  }

  .fab-nav-links .nav-icon {
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
  }

  .fab-divider {
    border: none;
    border-top: 1px solid var(--rule);
    margin: 0.3rem 0.5rem;
  }

  /* Icon buttons row at bottom of panel */
  .fab-icon-buttons {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.25rem 0;
  }

  .fab-icon-buttons .nav-icon-btn {
    padding: 0.6rem 0.75rem;
  }

  .fab-nav-links a {
    transition: color var(--duration-normal) ease,
                background-color var(--duration-slow) ease-out;
  }
}

/* Dark mode FAB */
@media (pointer: coarse) and (hover: none) and (max-width: 600px) and (prefers-color-scheme: dark) {
  .fab-button {
    background-color: rgba(30, 27, 24, 0.92);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.06);
  }

  .fab-panel {
    background-color: rgba(30, 27, 24, 0.82);
  }
}