* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #111827;
  color: #f9fafb;
}

.app {
  max-width: 520px;
  margin: 0 auto;
  padding: 16px;
}

.hero {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  padding: 18px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 26px;
}

.hero p {
  margin: 0;
  opacity: 0.95;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.tab {
  border: 0;
  padding: 10px 6px;
  border-radius: 14px;
  background: #1f2937;
  color: #f9fafb;
  font-size: 13px;
}

.tab.active {
  background: #22c55e;
  color: #052e16;
  font-weight: bold;
}

.page {
  display: none;
  background: #1f2937;
  padding: 16px;
  border-radius: 20px;
}

.page.active {
  display: block;
}

h2 {
  margin-top: 0;
}

textarea {
  width: 100%;
  min-height: 110px;
  border: 0;
  border-radius: 14px;
  padding: 12px;
  font-size: 16px;
  resize: vertical;
}

input,
select {
  width: 100%;
  margin: 6px 0 12px;
  padding: 12px;
  border: 0;
  border-radius: 12px;
  font-size: 16px;
}

label {
  display: block;
  font-size: 14px;
  color: #d1d5db;
}

button {
  cursor: pointer;
}

.primary,
.secondary {
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 13px;
  margin: 10px 0;
  font-size: 16px;
  font-weight: bold;
}

.primary {
  background: #22c55e;
  color: #052e16;
}

.secondary {
  background: #374151;
  color: #f9fafb;
}

.card {
  background: #111827;
  border-radius: 16px;
  padding: 14px;
  margin-top: 12px;
  line-height: 1.45;
}

.meal {
  background: #111827;
  padding: 12px;
  border-radius: 14px;
  margin: 10px 0;
}

.hint {
  color: #9ca3af;
  font-size: 14px;
}