/* =========================================================================
   Project Taste — style.css
   The LAYOUT skeleton. Positions the navbar, sidebar, content area, and
   footer using tokens from theme.css. Structure & responsiveness only —
   component skins (buttons, cards, inputs) live in components.css.

   Layout map (desktop):
     ┌───────────────────────────────────────────────┐
     │  NAVBAR  (fixed, frosted, full width)           │  --navbar-h
     ├────────────┬──────────────────────────────────┤
     │ SIDEBAR    │  CONTENT (scrolls independently)   │
     │ (sticky)   │                                    │
     │ --sidebar-w│                                    │
     ├────────────┴──────────────────────────────────┤
     │  FOOTER                                         │
     └───────────────────────────────────────────────┘
   ========================================================================= */

/* ==========================================================================
   1. NAVBAR — fixed, frosted glass, full width
   ========================================================================== */
.app-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-h);
  z-index: var(--z-navbar);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 0 var(--sp-5);
  background: var(--navbar-bg);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--dur-slow) var(--ease),
              border-color var(--dur-slow) var(--ease);
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

/* Brand / logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  color: var(--text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand:hover { color: var(--text); }
.brand-mark { font-size: 1.35rem; line-height: 1; }
.brand-accent { color: var(--accent); }

/* Global search sits in the center, flexes to fill */
.navbar-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  max-width: 440px;
  margin: 0 auto;
}
.navbar-search .bi-search {
  position: absolute;
  left: var(--sp-3);
  color: var(--text-subtle);
  font-size: var(--fs-md);
  pointer-events: none;
}
.navbar-search input {
  width: 100%;
  height: 38px;
  padding: 0 var(--sp-3) 0 2.25rem;
  font-family: var(--font-ui);
  font-size: var(--fs-base);
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-base) var(--ease),
              background-color var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease);
}
.navbar-search input::placeholder { color: var(--text-subtle); }
.navbar-search input:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.search-kbd {
  position: absolute;
  right: var(--sp-2);
  pointer-events: none;
}
.navbar-search input:focus ~ .search-kbd { opacity: 0; }

/* Right-hand nav actions */
.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex-shrink: 0;
}

/* ==========================================================================
   2. APP SHELL — sidebar + content row, offset below the fixed navbar
   ========================================================================== */
.app-shell {
  display: flex;
  align-items: flex-start;
  padding-top: var(--navbar-h);
  min-height: 100vh;
}

/* ==========================================================================
   3. SIDEBAR — sticky, scrolls internally, collapses to a drawer on mobile
   ========================================================================== */
.sidebar {
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  position: sticky;
  top: var(--navbar-h);
  height: calc(100vh - var(--navbar-h));
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  overflow: hidden;
  transition: transform var(--dur-base) var(--ease),
              background-color var(--dur-slow) var(--ease),
              border-color var(--dur-slow) var(--ease);
}

.sidebar-inner {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--sp-4) var(--sp-3) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

/* Sidebar filter box */
.sidebar-filter {
  position: relative;
  display: flex;
  align-items: center;
}
.sidebar-filter .bi-funnel {
  position: absolute;
  left: var(--sp-3);
  color: var(--text-subtle);
  font-size: var(--fs-sm);
  pointer-events: none;
}
.sidebar-filter input {
  width: 100%;
  height: 34px;
  padding: 0 var(--sp-2) 0 2rem;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur-base) var(--ease);
}
.sidebar-filter input::placeholder { color: var(--text-subtle); }
.sidebar-filter input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

/* Nav groups (categories) */
.tool-nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.nav-group { display: flex; flex-direction: column; gap: var(--sp-1); }
.nav-group-title {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-1);
  padding: 0 var(--sp-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-subtle);
}
.nav-group-title .bi { font-size: var(--fs-sm); }

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ==========================================================================
   4. CONTENT — independent scroll region, centered column
   ========================================================================== */
.content {
  flex: 1 1 auto;
  min-width: 0;                /* allow children to shrink / wrap */
  min-height: calc(100vh - var(--navbar-h));
  padding: var(--sp-6) var(--sp-6) var(--sp-8);
}

.view {
  max-width: var(--content-max);
  margin: 0 auto;
  animation: view-in var(--dur-slow) var(--ease-out);
}

@keyframes view-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Dashboard hero ---- */
.dashboard-hero {
  text-align: center;
  padding: var(--sp-7) var(--sp-4) var(--sp-6);
}
.hero-title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-3);
}
.hero-accent { color: var(--accent); }
.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto var(--sp-5);
}
.hero-actions {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Tool grid (dashboard cards) ---- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--sp-4);
  margin-top: var(--sp-6);
}

/* ==========================================================================
   5. FOOTER — full width, sits below the shell
   ========================================================================== */
.app-footer {
  border-top: 1px solid var(--border);
  background: var(--sidebar-bg);
  padding: var(--sp-5) var(--sp-6);
  text-align: center;
  transition: background-color var(--dur-slow) var(--ease),
              border-color var(--dur-slow) var(--ease);
}
.footer-text {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-base);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-heart { color: var(--danger); animation: heart-beat 1.6s var(--ease) infinite; }
@keyframes heart-beat {
  0%, 100% { transform: scale(1); }
  15%      { transform: scale(1.25); }
  30%      { transform: scale(1); }
}
.footer-sub { margin: 0; font-size: var(--fs-sm); color: var(--text-subtle); }
.footer-sub a { color: var(--text-muted); }
.footer-sub a:hover { color: var(--accent); }

/* ==========================================================================
   6. MOBILE DRAWER — backdrop + off-canvas sidebar
   ========================================================================== */
.sidebar-backdrop {
  position: fixed;
  inset: var(--navbar-h) 0 0 0;
  z-index: var(--z-backdrop);
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  animation: fade-in var(--dur-base) var(--ease) forwards;
}
@keyframes fade-in { to { opacity: 1; } }

/* The sidebar toggle button is hidden on desktop */
.sidebar-toggle { display: none; }

/* ==========================================================================
   7. RESPONSIVE
   ========================================================================== */

/* Tablet: slightly narrower sidebar */
@media (max-width: 1024px) {
  :root { --sidebar-w: 248px; }
  .content { padding: var(--sp-5) var(--sp-5) var(--sp-7); }
}

/* Mobile: sidebar becomes an off-canvas drawer */
@media (max-width: 768px) {
  .sidebar-toggle { display: inline-flex; }

  .app-navbar { padding: 0 var(--sp-3); gap: var(--sp-2); }

  /* Hide text labels on nav buttons to save space */
  .nav-label { display: none; }

  /* Search collapses below the search-max but stays usable */
  .navbar-search { max-width: none; }
  .search-kbd { display: none; }

  .sidebar {
    position: fixed;
    top: var(--navbar-h);
    left: 0;
    z-index: var(--z-sidebar);
    height: calc(100vh - var(--navbar-h));
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
  }
  /* Opened state toggled by sidebar.js */
  .sidebar.is-open { transform: translateX(0); }

  .content { padding: var(--sp-5) var(--sp-4) var(--sp-7); }
  .hero-title { font-size: var(--fs-2xl); }
  .hero-subtitle { font-size: var(--fs-md); }
}

/* Small phones: tighten the brand text */
@media (max-width: 420px) {
  .brand-text { display: none; }         /* keep just the 🍋 mark */
  .tool-grid { grid-template-columns: 1fr; }
}

/* Hide the backdrop entirely on desktop even if left in the DOM */
@media (min-width: 769px) {
  .sidebar-backdrop { display: none !important; }
}