/* ─── Base & Safe Areas ─────────────────────────────────────────── */
*,
*::before,
*::after {
  -webkit-tap-highlight-color: transparent;
}

.safe-top {
  padding-top: env(safe-area-inset-top, 0);
}

.safe-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* ─── Page Transitions ────────────────────────────────────────────── */
.page-enter {
  animation: pageEnter 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Skeleton Shimmer ──────────────────────────────────────────── */
.skeleton {
  position: relative;
  overflow: hidden;
  background: #e2e8f0;
  border-radius: 0.75rem;
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.55) 45%,
    rgba(255, 255, 255, 0.85) 50%,
    rgba(255, 255, 255, 0.55) 55%,
    transparent 100%
  );
  animation: shimmer 1.6s ease-in-out infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.skeleton-card {
  background: white;
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
  border: 1px solid #f1f5f9;
}

/* ─── Toast Notifications ───────────────────────────────────────── */
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border-radius: 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow:
    0 10px 25px -5px rgba(15, 23, 42, 0.12),
    0 4px 10px -4px rgba(15, 23, 42, 0.08);
  max-width: 22rem;
  width: 100%;
  animation: toastIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.toast--exit {
  animation: toastOut 0.3s ease-in forwards;
}

.toast--success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.toast--error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.toast--info {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(-16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
  }
}

/* ─── Navigation Active State ─────────────────────────────────────── */
.nav-btn {
  color: #94a3b8;
}

.nav-btn.active {
  color: #2563eb;
  background: #eff6ff;
}

.nav-btn.active svg {
  stroke-width: 2.25;
}

/* ─── Auth Background ───────────────────────────────────────────── */
.auth-bg {
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59, 130, 246, 0.18), transparent),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(99, 102, 241, 0.1), transparent),
    #f8fafc;
}

/* ─── Upload Zone ───────────────────────────────────────────────── */
.upload-zone {
  transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.upload-zone:hover {
  border-color: #93c5fd;
  background: #f0f9ff;
}

.upload-zone.has-image {
  border-style: solid;
  border-color: #e2e8f0;
  background: white;
}

/* ─── Spinner ───────────────────────────────────────────────────── */
.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner--dark {
  border-color: rgba(37, 99, 235, 0.2);
  border-top-color: #2563eb;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ─── Blood Sugar Badge Pulse ───────────────────────────────────── */
.badge-pulse {
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% {
    box-shadow: 0 0 0 0 currentColor;
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 0 4px transparent;
    opacity: 0.85;
  }
}

/* ─── Button Press Effect ───────────────────────────────────────── */
.btn-press:active:not(:disabled) {
  transform: scale(0.97);
}

/* ─── Image Preview ─────────────────────────────────────────────── */
.preview-image {
  animation: previewIn 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes previewIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ─── Result Card Reveal ──────────────────────────────────────────── */
.result-reveal {
  animation: resultReveal 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes resultReveal {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.result-value-pop {
  animation: valuePop 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.15s both;
}

@keyframes valuePop {
  from {
    opacity: 0;
    transform: scale(0.7);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ─── App Footer ─────────────────────────────────────────────────── */
#app-footer {
  bottom: 0.5rem;
}

#app-footer.footer-above-nav {
  bottom: 4.25rem;
}

/* ─── Meal Context Picker ───────────────────────────────────────── */
.meal-option:has(input:checked) > div {
  border-color: #3b82f6;
  background: #eff6ff;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.meal-option:has(input:checked) .meal-option-dot {
  border-color: #2563eb;
  background: #2563eb;
  box-shadow: inset 0 0 0 2px white;
}

/* ─── Scrollbar (subtle) ────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}