/* ============================================================
   SPURLUNA — App shell layout
   Sidebar + main content grid, mobile hamburger
   ============================================================ */

/* ---- App shell ---- */
.app {
  position: relative;
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev) 0%, transparent 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow-y: auto;
  z-index: 30;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 18px;
  margin-bottom: 8px;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background:
    radial-gradient(circle at 30% 30%, oklch(82% 0.14 190 / 0.9), transparent 60%),
    radial-gradient(circle at 70% 70%, oklch(72% 0.14 30 / 0.9), transparent 60%),
    linear-gradient(135deg, var(--accent-deep), var(--accent));
  box-shadow: var(--glow);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.brand-mark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, oklch(100% 0 0 / 0.2) 50%, transparent 60%);
}
.brand-name {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Nav groups */
.nav-group-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 14px 12px 6px;
  font-weight: 500;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: var(--r-md);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
  border: 1px solid transparent;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.nav-item:hover {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.nav-item.active {
  background: var(--surface-hi);
  color: var(--text);
  border-color: var(--border-accent);
  box-shadow: inset 0 0 0 1px oklch(70% 0.12 220 / 0.1);
}
.nav-item .nav-ico {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  opacity: 0.9;
  flex-shrink: 0;
}
.nav-item .nav-badge {
  margin-left: auto;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--accent);
  color: oklch(15% 0.02 265);
  font-weight: 600;
}

/* Admin section hidden by default; shown via sidebar.js when user is admin */
.nav-admin { display: none; }
.nav-admin.visible { display: contents; }

/* Sidebar footer */
.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--border);
}
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mood-great-deep), var(--accent-deep));
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 600;
  color: white;
  flex-shrink: 0;
  text-transform: uppercase;
}
.user-meta { flex: 1; min-width: 0; }
.user-name {
  font-size: 13px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-role {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Main pane ---- */
.main {
  padding: 32px 40px 80px;
  min-width: 0;
  position: relative;
  z-index: 1;
}

/* ============================================================
   Mobile — hamburger menu
   ============================================================ */
.hamburger-btn {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 50;
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--surface-hi);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text);
  cursor: pointer;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  box-shadow: var(--shadow-card);
}
.hamburger-btn .bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: all var(--dur-fast) var(--ease-out);
}
.hamburger-btn.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-btn.open .bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger-btn.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: oklch(10% 0.02 265 / 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 29;
  animation: overlay-in var(--dur-med) var(--ease-out);
}
@keyframes overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px;
    transform: translateX(-100%);
    transition: transform var(--dur-med) var(--ease-out);
    z-index: 40;
    box-shadow: 4px 0 40px oklch(0% 0 0 / 0.4);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.open {
    display: block;
  }

  .hamburger-btn {
    display: flex;
  }

  .main {
    padding: 72px 16px 60px;
  }
}

@media (min-width: 769px) {
  .hamburger-btn { display: none !important; }
  .sidebar-overlay { display: none !important; }
}