/* ============================================
   PlantPriceTracker — Core Styles
   Clean, mobile-first, fast-loading
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --green-dark: #1B5E20;
    --green-mid: #2E7D32;
    --green-light: #4CAF50;
    --green-pale: #E8F5E9;
    --blue-link: #1565C0;
    --orange-accent: #E65100;
    --gray-900: #212121;
    --gray-700: #616161;
    --gray-500: #9E9E9E;
    --gray-300: #E0E0E0;
    --gray-100: #F5F5F5;
    --white: #FFFFFF;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "SF Mono", "Fira Code", monospace;
    --max-width: 1100px;
    --radius: 6px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--gray-900); background: var(--white); line-height: 1.6; }
a { color: var(--blue-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.3; }
h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.35rem; margin: 1.5rem 0 0.75rem; color: var(--green-dark); }
h3 { font-size: 1.1rem; margin: 1rem 0 0.5rem; }

/* --- Layout --- */
.nav-container, .main-content, .footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* --- Header / Nav --- */
.site-header {
    background: var(--white);
    border-bottom: 2px solid var(--green-mid);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--green-dark);
    text-decoration: none;
}
.logo-icon { font-size: 1.3rem; }
.nav-links {
    display: flex;
    list-style: none;
    gap: 1.25rem;
}
.nav-links a {
    color: var(--gray-700);
    font-size: 0.9rem;
    font-weight: 500;
}
.nav-links a:hover { color: var(--green-dark); text-decoration: none; }

@media (max-width: 768px) {
    .nav-links { display: none; }
}

/* --- Breadcrumb --- */
.breadcrumb {
    font-size: 0.85rem;
    color: var(--gray-500);
    padding: 0.75rem 0;
}
.breadcrumb a { color: var(--gray-700); }

/* --- Hero (Homepage) --- */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--green-pale);
    border-radius: var(--radius);
    margin: 1rem 0;
}
.hero h1 { font-size: 2rem; color: var(--green-dark); }
.hero-sub { color: var(--gray-700); font-size: 1.1rem; margin: 0.5rem 0 1.5rem; }
.hero-proof {
    background: var(--white);
    display: inline-block;
    padding: 1.25rem 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--gray-300);
}
.proof-label { font-weight: 600; margin-bottom: 0.25rem; }
.proof-range { font-size: 1.5rem; margin: 0.5rem 0; }
.proof-low { color: var(--green-mid); font-weight: 700; }
.proof-high { color: var(--gray-500); }
.proof-arrow { color: var(--gray-300); margin: 0 0.5rem; }
.proof-savings { font-size: 0.9rem; color: var(--gray-700); }
.hero-cta {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 1.25rem;
    background: var(--green-mid);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
}
.hero-cta:hover { background: var(--green-dark); text-decoration: none; }

/* --- Category Grid (Homepage + Category Page) --- */
.categories, .guides-preview, .price-drops, .how-it-works, .retailers-section {
    margin: 2rem 0;
}
.category-grid, .guides-grid, .drops-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 0.75rem;
}
.category-card, .guide-card, .drop-card {
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-decoration: none;
    color: var(--gray-900);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.category-card:hover, .guide-card:hover, .drop-card:hover {
    border-color: var(--green-mid);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-decoration: none;
}
.category-card h3 { color: var(--green-dark); margin: 0 0 0.25rem; }
.cat-count { font-size: 0.85rem; color: var(--gray-500); }
.cat-range { font-weight: 600; color: var(--green-mid); margin-top: 0.25rem; }

/* --- Price Drop Cards --- */
.drop-card { display: flex; flex-direction: column; gap: 0.25rem; }
.drop-name { font-weight: 600; }
.drop-retailer { font-size: 0.85rem; color: var(--gray-500); }
.drop-amount { font-size: 0.95rem; }
.drop-old { text-decoration: line-through; color: var(--gray-500); }
.drop-new { color: var(--green-mid); font-weight: 600; }
.drop-pct { color: var(--green-light); font-weight: 700; font-size: 1.1rem; }

/* --- Guide Cards --- */
.guide-card h3 { font-size: 1rem; color: var(--green-dark); margin: 0 0 0.35rem; }
.guide-card p { font-size: 0.85rem; color: var(--gray-700); }
.see-all { display: inline-block; margin-top: 0.75rem; font-weight: 600; }

/* --- How It Works --- */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}
.step { text-align: center; }
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: var(--green-mid);
    color: var(--white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}
.step h3 { font-size: 1rem; }
.step p { font-size: 0.85rem; color: var(--gray-700); }

/* --- Retailer Badges --- */
.retailer-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.retailer-badge {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    color: var(--gray-700);
}

/* --- Product Page --- */
.product-page { margin-bottom: 2rem; }
.product-header { margin-bottom: 1.5rem; }
.product-botanical { color: var(--gray-500); font-style: italic; }
.product-savings { color: var(--green-mid); font-size: 1.05rem; margin-top: 0.25rem; }

.product-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
}
@media (max-width: 768px) {
    .product-layout { grid-template-columns: 1fr; }
}

/* Plant Facts Card */
.plant-facts {
    background: var(--green-pale);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}
.plant-facts h2 { margin-top: 0; font-size: 1.1rem; }
.facts-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.25rem 1rem;
    font-size: 0.9rem;
}
.facts-grid dt { font-weight: 600; color: var(--gray-700); }
.facts-grid dd { color: var(--gray-900); }

/* --- Comparison Table --- */
.price-comparison { margin-bottom: 1.5rem; }
.price-updated { font-size: 0.8rem; color: var(--gray-500); margin-bottom: 0.5rem; }
.table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    border: 2px solid var(--gray-300);
}
.comparison-table th {
    text-align: center;
    padding: 0.7rem 0.75rem;
    background: var(--green-dark);
    color: var(--white);
    border: 1px solid var(--green-dark);
    font-weight: 600;
    font-size: 0.8rem;
    white-space: nowrap;
}
.comparison-table th:first-child { text-align: left; }
.comparison-table td {
    padding: 0.7rem 0.75rem;
    border: 1px solid var(--gray-300);
    vertical-align: middle;
    text-align: center;
}
.comparison-table td:first-child { text-align: left; }
.comparison-table tbody tr:nth-child(even) { background: var(--gray-100); }
.comparison-table tbody tr:nth-child(odd) { background: var(--white); }
.comparison-table tr:hover { background: #F1F8E9; }
/* Don't highlight the whole row — just the winning cell */
.retailer-name { font-weight: 600; white-space: nowrap; }
.no-affiliate { color: var(--gray-500); font-size: 0.75rem; margin-left: 2px; }
.price-cell { text-align: right; white-space: nowrap; }
.best-price {
    color: var(--green-dark);
    font-weight: 700;
    background: var(--green-pale);
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--green-light);
}
.was-price { text-decoration: line-through; color: var(--gray-500); font-size: 0.8rem; margin-left: 0.25rem; }
.no-data { color: var(--gray-300); }
.in-stock { color: var(--green-mid); font-weight: 500; font-size: 0.85rem; }
.ships-season { display: block; font-size: 0.75rem; color: var(--gray-500); font-style: italic; }
.out-of-stock { color: var(--orange-accent); font-size: 0.85rem; }
.stock-unknown { color: var(--gray-500); font-size: 0.85rem; }

/* Grey out prices for sold-out retailers */
tr.sold-out-row .price-cell { color: var(--gray-300); }
tr.sold-out-row .price-cell .best-price { background: none; border: none; color: var(--gray-300); }
tr.sold-out-row .price-cell .was-price { color: var(--gray-300); }
tr.sold-out-row .retailer-name { color: var(--gray-500); }
tr.sold-out-row .buy-btn { background: var(--gray-500); }

/* Shipping column */
.shipping-cell { white-space: nowrap; font-size: 0.8rem; }
.shipping-info { color: var(--gray-700); }
.shipping-info.free-ship { color: var(--green-mid); font-weight: 600; }

.buy-btn {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: var(--green-mid);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}
.buy-btn:hover { background: var(--green-dark); text-decoration: none; }
.affiliate-label { display: block; font-size: 0.65rem; color: var(--gray-500); margin-top: 2px; text-align: center; }
.table-footnote { font-size: 0.8rem; color: var(--gray-500); margin-top: 0.5rem; font-style: italic; }

/* --- Seasonal Guide --- */
.seasonal-guide {
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.seasonal-guide h2 { margin-top: 0; }

/* Price Calendar Bar Chart */
.price-calendar { margin-bottom: 1.25rem; }
.price-calendar h3 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.month-bars {
    display: flex;
    gap: 4px;
    height: 80px;
    align-items: flex-end;
}
.month-bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 100%;
    position: relative;
}
.bar-fill {
    width: 100%;
    border-radius: 3px 3px 0 0;
    min-height: 4px;
    transition: height 0.3s;
}
.month-bar[data-level="1"] .bar-fill { background: var(--green-mid); }
.month-bar[data-level="2"] .bar-fill { background: #81C784; }
.month-bar[data-level="3"] .bar-fill { background: #FFD54F; }
.month-bar[data-level="4"] .bar-fill { background: #FFB74D; }
.month-bar[data-level="5"] .bar-fill { background: #E57373; }
.month-label {
    font-size: 0.65rem;
    color: var(--gray-500);
    margin-top: 4px;
    font-weight: 500;
}
.calendar-legend {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}
.legend-cheap { color: var(--green-mid); }
.legend-mid { color: #FFD54F; }
.legend-expensive { color: #E57373; }

/* Buy Timing */
.buy-timing {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}
.timing-best {
    background: var(--green-pale);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    border-left: 3px solid var(--green-mid);
}
.timing-worst {
    background: #FFF3E0;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    border-left: 3px solid #FFB74D;
}
.seasonal-note {
    font-size: 0.9rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}
.seasonal-tip {
    font-size: 0.9rem;
    color: var(--green-dark);
    background: var(--green-pale);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
}

/* Planting Zone Table */
.planting-zones { margin-top: 1rem; }
.planting-zones h3 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.zone-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.zone-table th {
    text-align: left;
    padding: 0.4rem 0.6rem;
    background: var(--gray-100);
    border-bottom: 2px solid var(--gray-300);
    font-weight: 600;
    color: var(--gray-700);
}
.zone-table td {
    padding: 0.4rem 0.6rem;
    border-bottom: 1px solid var(--gray-300);
}
.zone-num { font-weight: 600; }

/* --- Price History Chart --- */
.price-history { margin-bottom: 1.5rem; }
.price-history canvas { width: 100% !important; height: auto !important; }

/* --- Care Guide --- */
.care-guide { line-height: 1.7; }
.care-guide p { margin-bottom: 0.75rem; }

/* --- Sidebar --- */
.product-sidebar, .guide-sidebar { font-size: 0.9rem; }
.similar-plants, .season-alert, .guide-toc, .guide-related, .guide-more {
    background: var(--gray-100);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1rem;
}
.similar-plants h3, .season-alert h3, .guide-toc h3, .guide-related h3, .guide-more h3 {
    margin-top: 0;
    font-size: 0.95rem;
}
.similar-plants ul, .guide-toc ul, .guide-related ul, .guide-more ul {
    list-style: none;
    padding: 0;
}
.similar-plants li, .guide-toc li, .guide-related li, .guide-more li {
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--gray-300);
}
.similar-plants li:last-child, .guide-toc li:last-child, .guide-related li:last-child, .guide-more li:last-child {
    border-bottom: none;
}
.similar-name { font-weight: 500; }
.similar-price, .related-price { float: right; color: var(--green-mid); font-weight: 600; font-size: 0.85rem; }
.season-alert { background: #FFF3E0; border: 1px solid #FFB74D; }
.season-alert h3 { color: var(--orange-accent); }

/* --- Guide Article --- */
.guide-page { margin-bottom: 2rem; }
.guide-header { margin-bottom: 1.5rem; }
.guide-meta { font-size: 0.85rem; color: var(--gray-500); font-style: italic; }
.guide-layout {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 2rem;
}
@media (max-width: 768px) {
    .guide-layout { grid-template-columns: 1fr; }
}
.guide-content { line-height: 1.75; }
.guide-content h2 { border-bottom: 1px solid var(--gray-300); padding-bottom: 0.25rem; }
.guide-content p { margin-bottom: 0.75rem; }
.guide-content a { font-weight: 500; }

/* --- Category Page --- */
.category-page { margin-bottom: 2rem; }
.category-header { margin-bottom: 1rem; }
.category-header p { color: var(--gray-700); }
.category-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.category-filters label { font-size: 0.9rem; font-weight: 500; }
.category-filters select {
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.9rem;
}

/* Plant Card Grid */
.plant-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}
.plant-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 1rem;
    text-decoration: none;
    color: var(--gray-900);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.plant-card:hover {
    border-color: var(--green-mid);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-decoration: none;
}
.card-name { color: var(--green-dark); font-size: 1rem; margin: 0; }
.card-botanical { font-size: 0.8rem; color: var(--gray-500); font-style: italic; margin-top: 0.15rem; }
.card-price { margin: 0.75rem 0 0.5rem; }
.card-from { font-size: 0.8rem; color: var(--gray-500); }
.card-amount { font-size: 1.25rem; font-weight: 700; color: var(--green-mid); }
.card-savings {
    display: inline-block;
    background: var(--green-pale);
    color: var(--green-dark);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    margin-left: 0.35rem;
}
.card-meta { font-size: 0.8rem; color: var(--gray-500); display: flex; gap: 1rem; }
.card-cta { font-size: 0.85rem; color: var(--green-mid); font-weight: 600; margin-top: 0.5rem; }

/* --- No Prices Placeholder --- */
.no-prices {
    background: var(--gray-100);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    color: var(--gray-500);
}

/* --- Footer --- */
.site-footer {
    background: var(--gray-100);
    border-top: 1px solid var(--gray-300);
    margin-top: 3rem;
    padding: 1.5rem 0;
}
.footer-disclosure {
    font-size: 0.8rem;
    color: var(--gray-700);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}
.footer-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}
.footer-copyright { font-size: 0.75rem; color: var(--gray-500); }