:root {
    --comfort: #E87461;
    --healthy: #6BAA75;
    --neutral: #1A1A1A;
    --stats_col: #F2CC8F;
    --muted: #B0B0B0;
    --bg: #F8F1E7;
    --card: #FFFFFF;
    --body_txt_col: #1A1A1A;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "Inter", sans-serif;
    background: var(--bg);
    color: var(--body_txt_col);
    line-height: 1.6;
    overflow-x: hidden;
}
h1, h2, h3 {
    font-family: "Playfair Display", Georgia, serif;
    font-weight: 700;
    letter-spacing: -0.01em;
}

footer {
    text-align: center;
    padding: 3rem 2rem 2rem;
    color: var(--muted);
    font-size: 0.8rem;
}

/* Top bar */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: flex-end;
    padding: 1rem 2rem;
    font-size: 0.85rem;
    color: var(--muted);
    background: var(--neutral);
    backdrop-filter: blur(8px);
}
.topbar a { color: var(--comfort); text-decoration: none; margin-left: 0.3rem; }

/* Hero */
.hero {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem 1.5rem 4rem;
}
.hero h1 {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    line-height: 1.05;
    max-width: 16ch;
    margin-bottom: 1.5rem;
}
.hero h1 em {
    color: var(--comfort);
    font-style: italic;
    font-family: "Playfair Display", serif;
}
.hero p {
    font-size: 1rem;
    max-width: 48ch;
    color: #555;
    margin-bottom: 2rem;
}
.scroll-arrow {
    font-size: 1.5rem;
    color: var(--body_txt_col);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

/* Stats band */
.stats {
    background: var(--neutral);
    color: white;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding: 2rem;
    text-align: center;
    gap: 1rem;
}
.stat-num {
    font-family: "Playfair Display", serif;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    color: var(--stats_col);
    font-weight: 700;
}
.stat-label {
    font-size: 0.85rem;
    color: #ccc;
    margin-top: 0.3rem;
}

/* Chapter pages */
.chapter {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 5rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
    align-items: center;
}
.chapter.flip { direction: rtl; }
.chapter.flip > * { direction: ltr; }

.chapter h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    margin-bottom: 1rem;
    line-height: 1.15;
}
.chapter p {
    font-size: 0.98rem;
    color: #444;
    margin-bottom: 0.8rem;
}
.chapter .caption {
    font-size: 0.8rem;
    color: var(--muted);
    font-style: italic;
    margin-top: 1rem;
}

.viz-card {
    background: var(--card);
    border-radius: 14px;
    padding: 1.2rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
}
.viz-card svg { width: 100%; height: 100%; }

/* Photo band */
.photo-band {
    height: 260px;
    background-size: cover;
    background-position: center;
}
.photo-salad { background-image: url("https://images.unsplash.com/photo-1512621776951-a57141f2eefd?auto=format&fit=crop&w=1600&q=60"); }
.photo-fruit    { background-image: url("https://images.unsplash.com/photo-1610832958506-aa56368176cf?auto=format&fit=crop&w=1600&q=60"); }
.photo-fried    { background-image: url("https://images.unsplash.com/photo-1585238342024-78d387f4a707?auto=format&fit=crop&w=1600&q=60"); }

/* Scatter tooltip */
.tooltip {
    position: absolute;
    pointer-events: none;
    background: var(--neutral);
    color: white;
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 50;
    white-space: nowrap;
}

/* Recipe picker */
#recipe-picker { margin-top: 1.2rem; }
.picker-label {
    font-size: 0.8rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}
.picker-search {
    width: 100%;
    padding: 0.5rem 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    margin-bottom: 0.8rem;
    background: white;
}
.picker-search:focus { outline: none; border-color: var(--comfort); }
.picker-results {
    max-height: 160px;
    overflow-y: auto;
    border-radius: 8px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.picker-option {
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    cursor: pointer;
    border-bottom: 1px solid #f4f4f4;
}
  .picker-option:hover { background: #faf4eb; }
  .picker-option:last-child { border-bottom: none; }
  .picker-selected {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.8rem;
}
.picker-chip {
    padding: 0.35rem 0.7rem;
    border-radius: 16px;
    font-size: 0.8rem;
    color: white;
    cursor: pointer;
    user-select: none;
}

#ingredient-network {
    width: 100%;
    height: 500px; 
    background: #ffffff;
    border-radius: 14px;
    margin-top: 2rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    overflow: hidden;
}

.link {
    stroke: #e0e0e0;
    stroke-opacity: 0.6;
    stroke-width: 1.5px;
}

/* Ingredient bar chart card */
.viz-card--bar {
  aspect-ratio: unset;
  min-height: 420px;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
}

.bar-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.7rem;
  align-items: center;
}

.bar-filter-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 0.2rem;
}

.bar-btn {
  padding: 0.22rem 0.6rem;
  border-radius: 20px;
  border: 1.5px solid #ddd;
  background: white;
  font-size: 0.72rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.bar-btn:hover { background: #faf4eb; }
.bar-btn.active {
  background: var(--neutral);
  color: white;
  border-color: var(--neutral);
}

#bar-svg svg { width: 100%; height: 100%; }

#ingredient-network text {
    font-family: "Inter", sans-serif;
    font-size: 10px;
    fill: #666;
    pointer-events: none; /* Keeps text from blocking drag events */
}