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

:root {
  --bg: #f8f8f8;
  --card: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #666;
  --border: #e0e0e0;
  --primary: #2d6a4f;
  --primary-light: #e8f5e9;
  --accent: #d4a017;
  --danger: #c0392b;
  --danger-light: #fde8e8;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --nav-height: 60px;
  --header-height: 52px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* --- Login / Setup --- */
.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 24px;
  text-align: center;
}

.login-container h1 {
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.login-subtitle {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.login-container form {
  width: 100%;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-container input {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.login-container input:focus {
  border-color: var(--primary);
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* --- Buttons --- */
.btn {
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  text-align: center;
}

.btn:active {
  opacity: 0.7;
}

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

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

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

/* --- Header --- */
#app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  z-index: 100;
}

#header-title {
  font-size: 1.15rem;
  font-weight: 700;
}

#header-back {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  margin-right: 12px;
  padding: 4px;
  color: var(--text);
}

/* --- Bottom Nav --- */
#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--card);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 100;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.7rem;
  gap: 2px;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

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

.nav-icon {
  font-size: 1.3rem;
  line-height: 1;
}

/* --- Main Content --- */
#content {
  padding: calc(var(--header-height) + 12px) 16px calc(var(--nav-height) + 12px);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Tip --- */
.tip-card {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 0.88rem;
  line-height: 1.5;
  border-left: 3px solid var(--primary);
}

.tip-label {
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 4px;
}

/* --- Day Tabs --- */
.day-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.day-tabs::-webkit-scrollbar {
  display: none;
}

.day-tab {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 0.8rem;
  cursor: pointer;
  text-align: center;
  min-width: 44px;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s;
}

.day-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.day-tab.today {
  font-weight: 700;
}

.day-tab-label {
  display: block;
  font-size: 0.7rem;
  opacity: 0.7;
}

/* --- Recipe Cards --- */
.meal-section {
  margin-bottom: 16px;
}

.meal-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.recipe-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: box-shadow 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.recipe-card:active {
  box-shadow: 0 0 0 2px var(--primary);
}

.recipe-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.recipe-card-name {
  font-weight: 600;
  font-size: 0.95rem;
  flex: 1;
}

.recipe-card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}

.recipe-card-meta {
  display: flex;
  gap: 12px;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.icon-btn.active {
  opacity: 1;
}

.swap-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.swap-btn:active {
  background: var(--border);
}

/* --- Learn Page --- */
.learn-disclaimer {
  background: #fff3e0;
  border-left: 3px solid #e65100;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.8rem;
  color: #bf360c;
  margin-bottom: 16px;
  line-height: 1.5;
}

.learn-section {
  margin-bottom: 20px;
}

.learn-section-header {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.2s;
}

.learn-section-header:active {
  background: var(--bg);
}

.learn-section-title {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.learn-section-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.learn-section-arrow {
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: transform 0.2s;
}

.learn-section.open .learn-section-arrow {
  transform: rotate(90deg);
}

.learn-section-body {
  display: none;
  padding-top: 8px;
}

.learn-section.open .learn-section-body {
  display: block;
}

.learn-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.learn-card:active {
  background: var(--bg);
}

.learn-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.learn-card-title {
  font-weight: 600;
  font-size: 0.92rem;
  flex: 1;
}

.learn-card-summary {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.5;
}

.learn-card-details {
  display: none;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-size: 0.84rem;
  line-height: 1.6;
}

.learn-card.open .learn-card-details {
  display: block;
}

.learn-card-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.learn-card-meta .badge {
  font-size: 0.7rem;
}

.learn-detail-row {
  margin-bottom: 6px;
}

.learn-detail-label {
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.learn-detail-value {
  margin-top: 2px;
}

.learn-sources {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.evidence-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.evidence-sehr-stark, .evidence-sehr_stark { background: #c8e6c9; color: #1b5e20; }
.evidence-stark { background: #dcedc8; color: #33691e; }
.evidence-mittel-stark, .evidence-mittel_stark { background: #fff9c4; color: #f57f17; }
.evidence-mittel { background: #fff9c4; color: #f57f17; }
.evidence-schwach-mittel, .evidence-schwach_mittel { background: #ffe0b2; color: #e65100; }
.evidence-schwach { background: #ffccbc; color: #bf360c; }

/* Action plan cards */
.action-list {
  list-style: none;
}

.action-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  line-height: 1.5;
}

.action-item:last-child {
  border-bottom: none;
}

.action-badges {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}

/* --- Generate button --- */
.generate-section {
  margin-top: 20px;
  text-align: center;
}

/* --- Recipe Detail --- */
.recipe-detail {
  padding-bottom: 20px;
}

.recipe-detail h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.recipe-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-time {
  background: #e3f2fd;
  color: #1565c0;
}

.badge-type {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-cuisine {
  background: #fff3e0;
  color: #e65100;
}

.detail-section {
  margin-bottom: 20px;
}

.detail-section h3 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.ingredients-list {
  list-style: none;
}

.ingredients-list li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.ingredients-list li:last-child {
  border-bottom: none;
}

.instructions-list {
  list-style: none;
  counter-reset: steps;
}

.instructions-list li {
  counter-increment: steps;
  padding: 10px 0 10px 36px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  position: relative;
}

.instructions-list li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 10px;
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.instructions-list li:last-child {
  border-bottom: none;
}

.skin-benefits {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.88rem;
  line-height: 1.6;
}

.detail-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.detail-actions .btn {
  flex: 1;
}

.fav-active {
  background: #fff8e1;
  border-color: var(--accent);
  color: var(--accent);
}

.excl-active {
  background: var(--danger-light);
  border-color: var(--danger);
  color: var(--danger);
}

/* --- Recipe List --- */
.filter-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.filter-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 0.82rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s;
}

.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.search-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 12px;
  outline: none;
}

.search-input:focus {
  border-color: var(--primary);
}

.recipe-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: box-shadow 0.2s;
}

.recipe-list-item:active {
  box-shadow: 0 0 0 2px var(--primary);
}

.recipe-list-item.excluded {
  opacity: 0.4;
}

.recipe-list-info {
  flex: 1;
  min-width: 0;
}

.recipe-list-name {
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recipe-list-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.recipe-list-fav {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-left: 8px;
}

/* --- Shopping List --- */
.shopping-category {
  margin-bottom: 20px;
}

.shopping-category-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  padding-bottom: 6px;
  border-bottom: 2px solid var(--primary);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.shopping-item {
  display: flex;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}

.shopping-item:last-child {
  border-bottom: none;
}

.shopping-checkbox {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.shopping-item-text {
  flex: 1;
  font-size: 0.9rem;
}

.shopping-item-amount {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--primary);
  flex-shrink: 0;
}

.shopping-item.checked .shopping-item-text,
.shopping-item.checked .shopping-item-amount {
  text-decoration: line-through;
  opacity: 0.4;
}

/* --- Loading --- */
.loading {
  text-align: center;
  padding: 40px 0;
  color: var(--text-secondary);
}

/* --- Empty state --- */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state p {
  margin-bottom: 16px;
}

/* --- Utility --- */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

#content > * {
  animation: fadeIn 0.2s ease-out;
}