/* ===== MENUМ8 DESIGN SYSTEM ===== */
:root {
  /* Brand Colors */
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: #818CF8;
  --secondary: #10B981;
  --accent: #F59E0B;

  /* Neutrals */
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --border-light: #F1F5F9;

  /* Status Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 999px;

  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-small {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

/* ===== CARDS ===== */
.card-modern {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.card-modern:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-compact {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

/* ===== BUTTONS ===== */
.btn-modern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-ghost {
  background: var(--border-light);
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--border);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: 50%;
}

.btn-full {
  width: 100%;
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text);
  font-size: 0.9375rem;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--surface);
  color: var(--text);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

/* ===== DROPZONE ===== */
.dropzone {
  border: 3px dashed var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.dropzone:hover {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.02);
}

.dropzone.drag-over {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.05);
  transform: scale(1.01);
}

.dropzone-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--space-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
}

/* ===== NAVIGATION ===== */
.mobile-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.logo-header {
  height: 2.5rem;
  width: auto;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border-light);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-around;
  align-items: center;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
  z-index: 100;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: var(--space-xs);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
  min-width: 4rem;
}

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

.bottom-nav-icon {
  font-size: 1.5rem;
}

/* ===== ITEM CARDS ===== */
.item-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: var(--space-md);
  transition: var(--transition);
}

.item-card:active {
  transform: scale(0.98);
}

.item-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--space-sm);
}

.item-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
  color: var(--text);
}

.item-original {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 0.25rem;
}

.item-price {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.item-description {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: var(--space-sm) 0;
  line-height: 1.5;
}

/* ===== TAGS & BADGES ===== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0.25rem 0.25rem 0 0;
}

.tag-dietary {
  background: rgba(16, 185, 129, 0.1);
  color: var(--secondary);
}

.tag-allergen {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
}

.tag-kcal {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.375rem;
  background: var(--error);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

/* ===== LOADING & ANIMATIONS ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--border-light);
  border-radius: var(--radius-md);
}

.skeleton::after {
  content: "";
  position: absolute;
  top: 0;
  left: -150px;
  height: 100%;
  width: 150px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  100% { left: 100%; }
}

.skeleton-line {
  height: 0.75rem;
  margin: 0.5rem 0;
  border-radius: var(--radius-sm);
}

/* ===== ALERTS ===== */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: start;
  gap: var(--space-sm);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--secondary);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: white;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xl);
  font-weight: 600;
  z-index: 1001;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ===== FLOATING ACTION BUTTON ===== */
.fab {
  position: fixed;
  bottom: 5rem;
  right: var(--space-lg);
  width: 3.5rem;
  height: 3.5rem;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  z-index: 99;
}

.fab:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.fab .badge {
  position: absolute;
  top: -0.25rem;
  right: -0.25rem;
}

/* ===== MODAL ENHANCEMENTS ===== */
.modal-content {
  border-radius: var(--radius-xl);
  border: none;
  box-shadow: var(--shadow-xl);
}

.modal-header {
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-lg);
}

.modal-body {
  padding: var(--space-lg);
}

/* ===== RESPONSIVE UTILITIES ===== */
.container-mobile {
  max-width: 100%;
  padding: var(--space-md);
  padding-bottom: 6rem; /* Space for bottom nav */
}

.spacer-bottom {
  height: 5rem;
}

@media (min-width: 768px) {
  .container-mobile {
    max-width: 42rem;
    margin: 0 auto;
  }

  .bottom-nav {
    display: none;
  }

  .spacer-bottom {
    height: 0;
  }
}

/* ===== UTILITY CLASSES ===== */
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.text-center { text-align: center; }
.text-right { text-align: right; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.w-full { width: 100%; }
.h-full { height: 100%; }