:root {
  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'Roboto', 'Oxygen', 'Ubuntu', 'Helvetica Neue', Arial, sans-serif;

  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 1.875rem;

  /* Font weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-base: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  /* Colors */
  --color-primary: #136f84;
  --color-text-primary: #1f2933;
  --color-text-secondary: #52606d;
  --color-border: #cbd2d9;

  /* Base settings */
  color-scheme: light dark;
  line-height: 1.5;
  background-color: #f5f7fa;
  color: #1f2933;
}

* {
  font-family: var(--font-family-base);
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Heading hierarchy - Phase 2 */
h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.25;
  margin: 0;
}

h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.25;
  margin: 0 0 var(--space-sm) 0;
}

h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: 1.25;
  margin: 0;
}

.hero-bg {
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(12, 110, 125, 0.85) 0%, rgba(12, 110, 125, 0.45) 60%, rgba(255, 255, 255, 0.9) 100%),
    url("./Images/bg-nutrispec-light-desktop-1920x1080.jpg") center/cover no-repeat fixed;
}

.app-header,
.app-footer {
  background: rgba(19, 125, 132, 0.65);
  color: #ffffff;
  padding: 1.5rem 2rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.tagline {
  margin: 0.25rem 0 0;
  max-width: 58ch;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-nav {
  display: inline-flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-link {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  border: none;
  border-radius: 999px;
  padding: 0.75rem 1.75rem;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: background 0.2s ease;
}

.nav-link:hover,
.nav-link:focus {
  background: rgba(255, 255, 255, 0.32);
}

.nav-link.is-active {
  background: #ffffff;
  color: #136f84;
}

.guest-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.1rem;
  font-size: 0.85rem;
  color: #e4e7eb;
}

.guest-status .guest-label {
  font-weight: 600;
  color: #ffffff;
}

.app-main {
  padding: 1.75rem;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.layout-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.layout-grid > * {
  width: 95%;
}

/* Phase 4: Panels & Layout */
.panel {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 1rem;
  padding: var(--space-xl);
  box-shadow: 0 18px 35px rgba(19, 111, 132, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.results-panel--hidden {
  display: none;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-base);
  margin-bottom: var(--space-sm);
}

.panel-actions {
  display: inline-flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Phase 8: Buttons & Final Polish */
button {
  font-family: inherit;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

button[type="button"],
button[type="submit"] {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

button[type="button"]:hover,
button[type="submit"]:hover,
button[type="button"]:focus,
button[type="submit"]:focus {
  background: #0f5666;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(19, 111, 132, 0.25);
}

button:disabled {
  background: #9aa5b1;
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

/* Phase 3: Forms & Fields */
.field {
  display: grid;
  gap: var(--space-sm);
  align-items: start;
}

.field-label {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.6;
}

input[type="text"],
input[type="number"],
input[type="search"],
input[type="password"],
select {
  padding: 0.625rem 0.875rem;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: 1.6;
  background: #ffffff;
  color: var(--color-text-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.settings-form select {
  width: 100%;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(19, 111, 132, 0.1);
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.search-results,
.saved-recipes-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid #dfe3eb;
  border-radius: 0.75rem;
  max-height: 260px;
  overflow-y: auto;
  background: rgba(19, 111, 132, 0.05);
}

.search-results li,
.saved-recipes-list li {
  border-bottom: 1px solid #e5e9f0;
}

.saved-recipes-list li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.search-results button,
.saved-recipes-list button[data-action="open"] {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem;
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
}

.search-results button:hover,
.search-results button:focus,
.saved-recipes-list button[data-action="open"]:hover,
.saved-recipes-list button[data-action="open"]:focus {
  background: rgba(19, 111, 132, 0.16);
}

.saved-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.saved-actions button {
  background: #0f5666;
  color: #ffffff;
  border: none;
  border-radius: 0.6rem;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.saved-actions button:hover,
.saved-actions button:focus {
  background: #0b404c;
}

.saved-recipes-list button[data-action="open"].is-selected {
  background: rgba(19, 111, 132, 0.24);
  font-weight: 600;
}

.home-intro {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.home-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.home-highlights li {
  background: rgba(19, 111, 132, 0.08);
  border-radius: 0.9rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.home-highlights strong {
  font-size: 0.95rem;
  color: #136f84;
}

.home-highlights span {
  font-size: 0.85rem;
  color: #1f2933;
}

.home-note {
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  background: rgba(19, 111, 132, 0.08);
  color: #0f1f2c;
}

.recipe-panel .controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: flex-start;
}

.controls .field {
  min-width: 200px;
}

/* Phase 7: Tables */
.recipe-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.recipe-table th {
  background: rgba(19, 111, 132, 0.08);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  text-align: left;
  padding: var(--space-md) 0.875rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.recipe-table td {
  padding: 0.625rem 0.875rem;
  border: 1px solid #e4e7eb;
  vertical-align: middle;
  color: var(--color-text-primary);
}

.recipe-table input,
.recipe-table select {
  width: 100%;
  box-sizing: border-box;
  font-size: var(--font-size-sm);
  padding: var(--space-sm) 0.625rem;
}

.hint {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: var(--font-size-sm);
  margin: 0;
  line-height: 1.6;
}

.recipe-status {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.badge {
  background: #f59f00;
  color: #1f2933;
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
  font-weight: 600;
}

.results-grid {
  display: grid;
  grid-template-columns: minmax(320px, 1.4fr) minmax(320px, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.macro-chart {
  margin-top: 0;
}

.nutrient-table {
  border-collapse: collapse;
  width: 100%;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.nutrient-table th {
  background: rgba(19, 111, 132, 0.08);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  text-align: left;
  padding: var(--space-md) 0.875rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.nutrient-table td {
  padding: 0.625rem 0.875rem;
  border: 1px solid #e4e7eb;
  color: var(--color-text-primary);
}

.nutrient-table tbody tr:nth-child(odd) {
  background: rgba(19, 111, 132, 0.04);
}

.nutrient-table tbody tr:hover {
  background: rgba(19, 111, 132, 0.08);
}

/* Macro Breakdown & Pie Chart */
.macro-breakdown {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: var(--space-sm);
  width: 100%;
}

.macro-breakdown li {
  display: flex;
  justify-content: center;
  border: 1px solid #e4e7eb;
  border-radius: 999px;
  padding: 0.5rem 1rem;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  line-height: 1.4;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.macro-breakdown li:hover {
  background: rgba(19, 111, 132, 0.04);
  border-color: var(--color-border);
}

.macro-breakdown .label-group {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 400;
}

.macro-bullet {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.chart-card {
  margin: 0;
  padding: var(--space-lg) var(--space-base);
  border: 1px solid #e4e7eb;
  border-radius: 0.75rem;
  /* Option 5: Primary Brand Tint (matches your teal theme) */
  background: linear-gradient(135deg, #e6f4f6 0%, #cce8ec 100%);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-lg);
  box-shadow: 0 4px 12px rgba(19, 111, 132, 0.08);
}

.chart-card__header {
  text-align: center;
  color: var(--color-text-primary);
}

.chart-card__header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.chart-card__subtitle {
  margin: var(--space-sm) 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.chart-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  justify-content: center;
  padding-left: 0;
}

.chart-card__canvas {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  order: 1;
}

.chart-card__canvas canvas {
  width: 240px;
  height: 240px;
  max-width: none;
  max-height: none;
}

.chart-card canvas {
  width: 240px;
  height: 240px;
}

@media (max-width: 1024px) {
  .results-grid {
    grid-template-columns: 1fr;
  }

  .chart-card__body {
    flex-direction: column;
  }

  .macro-chart {
    margin-top: 1.5rem;
  }

  .chart-card__canvas {
    flex: 1 1 auto;
  }
}

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

  .chart-card {
    justify-self: center;
  }
}

.density-warning {
  margin: 0;
  padding: 0.6rem 0.9rem;
  border-left: 4px solid #f59f00;
  background: rgba(245, 159, 0, 0.12);
  border-radius: 0.35rem;
}

.settings-form {
  display: grid;
  gap: 1rem;
  max-width: 420px;
}

/* Phase 5: Pieces Controls */
.nb-quantity-mode-controls {
  display: grid;
  gap: var(--space-sm);
  margin-top: 0.625rem;
  padding: var(--space-md);
  background: rgba(19, 111, 132, 0.04);
  border-radius: 0.5rem;
  border: 1px solid rgba(19, 111, 132, 0.1);
}

.nb-qty-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.nb-qty-toggle input[type="checkbox"] {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  cursor: pointer;
}

.nb-qty-helper {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding-left: 1.625rem;
}

.nb-pieces-actions {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-left: 1.625rem;
}

.nb-pieces-actions[hidden] {
  display: none !important;
}

.nb-pieces-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.nb-pieces-field > span {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text-secondary);
}

.nb-pieces-value-input {
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  background: #ffffff;
  color: var(--color-text-primary);
  line-height: 1.6;
  max-width: 200px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.nb-pieces-value-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(19, 111, 132, 0.1);
}

.nb-pieces-value-input:disabled {
  background: #f5f7fa;
  color: #9aa5b1;
  cursor: not-allowed;
}

.nb-pieces-note {
  margin: 0;
  font-size: var(--font-size-xs);
  color: #c81e1e;
  line-height: 1.6;
  font-weight: var(--font-weight-medium);
}

/* Phase 6: Dataset Status */
.dataset-status {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-base);
  background: rgba(19, 111, 132, 0.04);
  border-radius: 0.5rem;
  border-left: 3px solid var(--color-primary);
}

.dataset-status > span {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.dataset-status output {
  font-weight: var(--font-weight-normal);
  font-size: var(--font-size-base);
  color: var(--color-primary);
  line-height: 1.6;
}

.dataset-note {
  margin: 0;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.auth-forms {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.auth-message {
  min-height: 1.2rem;
  margin: 0;
  font-size: 0.9rem;
}

.auth-message.error,
.saved-message.error {
  color: #c81e1e;
}

.auth-message.success,
.saved-message.success {
  color: #0f7a6c;
}

.auth-hint {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: #52606d;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: #136f84;
  color: #ffffff;
  padding: 0.9rem 1.2rem;
  border-radius: 0.75rem;
  box-shadow: 0 15px 30px rgba(19, 111, 132, 0.28);
  min-width: 200px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.app-footer {
  text-align: right;
  font-size: var(--font-size-sm);
}

#app-version {
  font-style: italic;
}

/* Language Switch Warning Modal */
.language-switch-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: #ffffff;
  border-radius: 0.75rem;
  padding: var(--space-xl);
  max-width: 480px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.modal-content h3 {
  margin: 0 0 var(--space-base) 0;
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
}

.modal-message,
.modal-warning,
.modal-consequence-header {
  margin: 0 0 var(--space-base) 0;
  line-height: 1.6;
  color: var(--color-text-primary);
}

.modal-warning {
  padding: var(--space-sm) var(--space-md);
  background: rgba(200, 30, 30, 0.1);
  border-left: 3px solid #c81e1e;
  border-radius: 0.25rem;
  color: #c81e1e;
  font-weight: var(--font-weight-medium);
}

.modal-consequence-header {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
}

.modal-consequence-list {
  margin: 0 0 var(--space-xl) 0;
  padding-left: var(--space-xl);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.modal-consequence-list li {
  margin-bottom: var(--space-xs);
}

.modal-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

.modal-cancel,
.modal-confirm {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-cancel {
  background: #e4e7eb;
  color: var(--color-text-primary);
  border: none;
}

.modal-cancel:hover {
  background: #cbd2d9;
}

.modal-confirm {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
}

.modal-confirm:hover {
  background: #0f5666;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(19, 111, 132, 0.25);
}