/* Custom Styles & Modern Aesthetic Tokens for CalsFromPhoto */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-light: #ecfdf5;
  --primary-border: #a7f3d0;
  
  --bg-main: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  
  --protein: #3b82f6;
  --fat: #f59e0b;
  --carbs: #8b5cf6;
  --calories: #10b981;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding: 0 16px;
  box-sizing: border-box;
}

.page-container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-container-wide {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
}

.page-container-narrow {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

/* Header with Centered Nav Menu */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.header-container {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  flex: 0 0 200px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.header-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.header-right {
  flex: 0 0 200px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

@media (max-width: 768px) {
  .header-left, .header-right {
    flex: 0 0 auto;
  }
}

.brand-logo {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* Toast Notification Container under header */
#toast-container {
  position: fixed;
  top: 4.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 90%;
  max-width: 440px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-12px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.toast-success {
  background-color: #065f46;
  color: #ffffff;
  border: 1px solid #059669;
}

.toast-error {
  background-color: #991b1b;
  color: #ffffff;
  border: 1px solid #dc2626;
}

.toast-info {
  background-color: #1e293b;
  color: #ffffff;
  border: 1px solid #334155;
}

/* Cards & Containers */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
  box-sizing: border-box;
}

.glass-card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

/* Primary Button */
.btn-primary {
  background-color: var(--primary);
  color: #ffffff !important;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--primary-hover) !important;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--text-main) !important;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 20px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: #e2e8f0 !important;
}

/* Inputs */
.custom-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: #ffffff;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}

.custom-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* Macro badges */
.macro-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
}

.macro-calories { background: #ecfdf5; color: #047857; }
.macro-protein { background: #eff6ff; color: #1d4ed8; }
.macro-fat { background: #fffbeb; color: #b45309; }
.macro-carbs { background: #f5f3ff; color: #6d28d9; }

/* Progress bar container */
.progress-bar-container {
  height: 12px;
  background-color: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Banner positioned at bottom */
.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 580px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  z-index: 999;
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color);
  z-index: 90;
  justify-content: space-around;
  align-items: center;
}

@media (max-width: 600px) {
  .mobile-bottom-nav {
    display: flex;
  }
  body {
    padding-bottom: 65px;
  }
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  gap: 2px;
}

.bottom-nav-item.active {
  color: var(--primary);
}

/* Spinner */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s ease-in-out infinite;
}

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