/* =====================================================================
   QU CORE — Shared components CSS
   Navbar, toast, drawer, modal, buttons, cards — all prefixed .qu-*
   ===================================================================== */

/* =====================================================================
   GLOBAL NAVBAR
   Injected by qu-nav.js into <body> of each app.
   ===================================================================== */

.qu-nav {
  position: sticky;
  top: 0;
  z-index: var(--qu-z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--qu-s-4);
  height: var(--qu-nav-h);
  padding-top: var(--qu-safe-top);
  padding-inline: var(--qu-s-4);
  background: rgba(6, 6, 7, .72);
  backdrop-filter: saturate(140%) blur(20px);
  -webkit-backdrop-filter: saturate(140%) blur(20px);
  border-bottom: 1px solid var(--qu-line);
  font-family: var(--qu-font-ui);
  color: var(--qu-text);
  transition: border-color var(--qu-dur) var(--qu-ease), background var(--qu-dur) var(--qu-ease);
}

.qu-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--qu-s-3);
  color: var(--qu-text);
  text-decoration: none;
  font-family: var(--qu-font-display);
  font-size: 18px;
  letter-spacing: .12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.qu-nav__brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--qu-accent), var(--qu-accent-3));
  border-radius: var(--qu-r-xs);
  box-shadow: var(--qu-glow-accent);
  flex: 0 0 auto;
  position: relative;
  overflow: hidden;
}
.qu-nav__brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.qu-nav__brand-mark--fallback::before {
  content: 'Q';
  color: #fff;
  font-family: var(--qu-font-display);
  font-size: 20px;
  font-weight: 900;
}
.qu-nav__brand strong { color: var(--qu-accent); font-weight: 900; }

.qu-nav__links {
  display: flex;
  align-items: center;
  gap: var(--qu-s-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.qu-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--qu-r-pill);
  color: var(--qu-text-2);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  transition: color var(--qu-dur-fast) var(--qu-ease),
              background var(--qu-dur-fast) var(--qu-ease),
              transform var(--qu-dur-fast) var(--qu-ease);
  white-space: nowrap;
}
.qu-nav__link:hover {
  color: var(--qu-text);
  background: rgba(255,255,255,.06);
}
.qu-nav__link--active {
  color: var(--qu-text);
  background: var(--qu-accent-bg);
  box-shadow: inset 0 0 0 1px var(--qu-accent-bg-2);
}
.qu-nav__link--active::before {
  content: '';
  position: absolute;
  left: 12px; right: 12px;
  bottom: 3px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--qu-accent), transparent);
  border-radius: 2px;
}

.qu-nav__right {
  display: flex;
  align-items: center;
  gap: var(--qu-s-2);
}

.qu-nav__burger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--qu-line);
  border-radius: var(--qu-r-sm);
  color: var(--qu-text);
  cursor: pointer;
  transition: border-color var(--qu-dur-fast), background var(--qu-dur-fast);
}
.qu-nav__burger:hover { background: var(--qu-bg-4); border-color: var(--qu-line-2); }

.qu-nav__menu {
  position: fixed;
  inset: var(--qu-nav-h) 0 0 0;
  padding-top: var(--qu-safe-top);
  background: rgba(6, 6, 7, .96);
  backdrop-filter: blur(16px);
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--qu-dur) var(--qu-ease), transform var(--qu-dur) var(--qu-ease);
  z-index: calc(var(--qu-z-nav) - 1);
  overflow-y: auto;
}
.qu-nav__menu[data-open="true"] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.qu-nav__menu .qu-nav__links {
  flex-direction: column;
  align-items: stretch;
  gap: var(--qu-s-1);
  padding: var(--qu-s-4);
}
.qu-nav__menu .qu-nav__link {
  padding: 14px 16px;
  font-size: 15px;
  border-radius: var(--qu-r);
  justify-content: space-between;
}

@media (max-width: 860px) {
  .qu-nav > .qu-nav__links { display: none; }
  .qu-nav__burger { display: inline-flex; }
}

/* =====================================================================
   BUTTONS
   ===================================================================== */

.qu-btn {
  --_bg: var(--qu-bg-3);
  --_fg: var(--qu-text);
  --_bd: var(--qu-line);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--qu-s-2);
  padding: 10px 18px;
  min-height: 40px;
  background: var(--_bg);
  color: var(--_fg);
  border: 1px solid var(--_bd);
  border-radius: var(--qu-r-pill);
  font-family: var(--qu-font-ui);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--qu-dur-fast) var(--qu-ease),
              background var(--qu-dur-fast) var(--qu-ease),
              border-color var(--qu-dur-fast) var(--qu-ease),
              box-shadow var(--qu-dur-fast) var(--qu-ease);
  will-change: transform;
}
.qu-btn:hover { transform: translateY(-1px); border-color: var(--qu-line-2); }
.qu-btn:active { transform: translateY(0) scale(.98); }
.qu-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.qu-btn--primary {
  --_bg: linear-gradient(135deg, var(--qu-accent), var(--qu-accent-3));
  --_fg: #fff;
  --_bd: transparent;
  box-shadow: 0 4px 18px rgba(255,92,0,.28);
}
.qu-btn--primary:hover { box-shadow: 0 6px 26px rgba(255,92,0,.45); }

/* Glint sweep on primary buttons */
.qu-btn--primary::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: -40%;
  width: 30%;
  background: linear-gradient(110deg, transparent 0%, rgba(255,255,255,.35) 50%, transparent 100%);
  transform: skewX(-20deg);
  transition: left 900ms var(--qu-ease);
  pointer-events: none;
}
.qu-btn--primary:hover::after { left: 140%; }

.qu-btn--ghost { --_bg: transparent; }
.qu-btn--sm { min-height: 32px; padding: 6px 12px; font-size: 12px; }
.qu-btn--lg { min-height: 52px; padding: 14px 26px; font-size: 15px; }

/* =====================================================================
   CARDS
   ===================================================================== */

.qu-card {
  position: relative;
  background: var(--qu-bg-2);
  border: 1px solid var(--qu-line);
  border-radius: var(--qu-r-lg);
  padding: var(--qu-s-5);
  transition: border-color var(--qu-dur) var(--qu-ease),
              transform var(--qu-dur) var(--qu-ease),
              box-shadow var(--qu-dur) var(--qu-ease);
}
.qu-card--hover:hover {
  border-color: var(--qu-accent-bg-2);
  transform: translateY(-2px);
  box-shadow: var(--qu-shadow);
}
.qu-card--glow {
  background:
    radial-gradient(600px 200px at 50% -20%, var(--qu-accent-bg), transparent),
    var(--qu-bg-2);
}

/* =====================================================================
   TOAST (notifications)
   ===================================================================== */

.qu-toast-stack {
  position: fixed;
  top: calc(var(--qu-nav-h) + var(--qu-safe-top) + var(--qu-s-4));
  right: var(--qu-s-4);
  display: flex;
  flex-direction: column;
  gap: var(--qu-s-2);
  z-index: var(--qu-z-toast);
  pointer-events: none;
  max-width: min(360px, calc(100vw - var(--qu-s-8)));
}
.qu-toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: var(--qu-s-3);
  padding: 14px 16px;
  background: var(--qu-bg-3);
  border: 1px solid var(--qu-line-2);
  border-left: 3px solid var(--qu-accent);
  border-radius: var(--qu-r);
  box-shadow: var(--qu-shadow);
  color: var(--qu-text);
  font-size: 13px;
  animation: qu-fade-up var(--qu-dur) var(--qu-ease);
}
.qu-toast--success { border-left-color: var(--qu-green); }
.qu-toast--error   { border-left-color: var(--qu-red); }
.qu-toast--warn    { border-left-color: var(--qu-yellow); }
.qu-toast--info    { border-left-color: var(--qu-blue); }
.qu-toast__title { font-weight: 700; margin-bottom: 2px; }
.qu-toast__sub { color: var(--qu-text-3); font-size: 12px; }
.qu-toast__close {
  margin-left: auto;
  background: transparent;
  border: 0;
  color: var(--qu-text-3);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  font-size: 18px;
}
.qu-toast__close:hover { color: var(--qu-text); }
.qu-toast--exit { animation: qu-fade-up var(--qu-dur) var(--qu-ease) reverse forwards; }

/* =====================================================================
   GLOBAL LOADER (progress bar top)
   ===================================================================== */

.qu-loader {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--qu-accent), var(--qu-accent-2));
  z-index: calc(var(--qu-z-toast) + 1);
  transition: width 400ms var(--qu-ease), opacity 200ms linear;
  box-shadow: 0 0 8px rgba(255,92,0,.6);
}

/* =====================================================================
   BADGES
   ===================================================================== */

.qu-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--qu-r-pill);
  border: 1px solid transparent;
  background: rgba(255,255,255,.06);
  color: var(--qu-text-2);
  font-family: var(--qu-font-ui);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.qu-badge--accent { background: var(--qu-accent-bg); color: var(--qu-accent); border-color: var(--qu-accent-bg-2); }
.qu-badge--green  { background: var(--qu-green-bg);  color: #86efac; border-color: rgba(34,197,94,.2); }
.qu-badge--red    { background: var(--qu-red-bg);    color: #fca5a5; border-color: rgba(239,68,68,.2); }
.qu-badge--blue   { background: var(--qu-blue-bg);   color: #bfdbfe; border-color: rgba(59,130,246,.2); }
.qu-badge--yellow { background: var(--qu-yellow-bg); color: #fde68a; border-color: rgba(234,179,8,.2); }

/* =====================================================================
   UNIVERSAL PAGE LIFT (entrance animation)
   ===================================================================== */

[data-qu-anim="fade-up"] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms var(--qu-ease), transform 600ms var(--qu-ease);
}
[data-qu-anim="fade-up"].qu-in {
  opacity: 1;
  transform: none;
}

/* =====================================================================
   AMBIENT SHADER — fixed full-screen canvas behind everything
   Use: <div class="qu-ambient" data-qu-hero="lightning" data-qu-hero-intensity="0.15"></div>
   ===================================================================== */
.qu-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  isolation: isolate;
}
.qu-ambient canvas {
  opacity: .55;
  mix-blend-mode: screen;
}

/* =====================================================================
   APP SWITCHER — floating button + bottom sheet
   ===================================================================== */
.qu-switcher-btn {
  position: fixed;
  right: calc(env(safe-area-inset-right, 0px) + 16px);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
  z-index: 99998;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF6A1A 0%, #FF3C00 100%);
  color: #fff;
  box-shadow: 0 8px 24px -6px rgba(255, 80, 0, .55), 0 2px 8px rgba(0, 0, 0, .35), inset 0 0 0 1px rgba(255, 255, 255, .12);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform .22s cubic-bezier(.2,.8,.2,1), box-shadow .22s ease;
  -webkit-tap-highlight-color: transparent;
}
.qu-switcher-btn:hover { transform: translateY(-2px) scale(1.04); }
.qu-switcher-btn:active { transform: scale(.94); }
.qu-switcher-btn svg { width: 22px; height: 22px; }

.qu-switcher-scrim {
  position: fixed;
  inset: 0;
  z-index: 99997;
  background: rgba(8, 8, 10, .6);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  opacity: 0;
  pointer-events: none;
  transition: opacity .26s ease;
}
.qu-switcher-scrim.open {
  opacity: 1;
  pointer-events: auto;
}

.qu-switcher-sheet {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
  z-index: 99999;
  width: min(440px, calc(100vw - 24px));
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  background: rgba(18, 18, 20, .88);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 22px 60px -10px rgba(0, 0, 0, .6);
  transition: transform .3s cubic-bezier(.2,.8,.2,1), opacity .25s ease;
  color: #F3EFE8;
  font-family: var(--qu-font-ui, -apple-system, system-ui, sans-serif);
}
.qu-switcher-sheet.open {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}
.qu-switcher-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding: 2px 4px;
}
.qu-switcher-title {
  font-family: var(--qu-font-display, "Bebas Neue", sans-serif);
  font-size: 18px;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0;
}
.qu-switcher-close {
  background: rgba(255, 255, 255, .08);
  border: none;
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  display: grid;
  place-items: center;
}
.qu-switcher-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
@media (max-width: 360px) { .qu-switcher-grid { grid-template-columns: repeat(2, 1fr); } }

.qu-switcher-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 18px 10px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .06);
  color: #F3EFE8;
  text-decoration: none;
  text-align: center;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
  cursor: pointer;
  min-height: 92px;
}
.qu-switcher-tile:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 92, 0, .35);
}
.qu-switcher-tile.current {
  background: linear-gradient(135deg, rgba(255, 92, 0, .22), rgba(255, 60, 0, .08));
  border-color: rgba(255, 92, 0, .55);
}
.qu-switcher-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, #FF6A1A, #FF3C00);
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  font-family: var(--qu-font-display, "Bebas Neue", sans-serif);
  letter-spacing: 0;
}
.qu-switcher-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(243, 239, 232, .85);
  line-height: 1.15;
}
.qu-switcher-hint {
  text-align: center;
  color: rgba(243, 239, 232, .45);
  font-size: 11px;
  margin-top: 12px;
  letter-spacing: .05em;
}
