/* Just Grow — glass / nature UI + seasonal CSS variables
   Background: assets/leaf-bg.webp (~230KB WebP). See assets/ATTRIBUTION.txt
*/

:root {
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --radius: 26px;
  --radius-sm: 14px;
  --radius-pill: 999px;
  --shadow: 0 12px 40px rgba(20, 40, 20, 0.14), 0 4px 14px rgba(20, 40, 20, 0.08);
  --shadow-sm: 0 6px 22px rgba(20, 40, 20, 0.1), 0 2px 6px rgba(20, 40, 20, 0.05);
  --shadow-focus: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);
  --max: 960px;
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 3.75rem;

  /* Default = Florida early-fall green track */
  --bg: #f3f6f0;
  --bg-elevated: #ffffff;
  --bg-tint: #eef3ea;
  --text: #1c1810;
  --text-muted: #3d3428;
  --accent: #2a6b3c;
  --accent-soft: #d8ebdc;
  --accent-strong: #1a4a28;
  --border: #c9d6c8;
  --border-subtle: #dde6db;
  --chip: #eaf3eb;
  --hero-gradient: linear-gradient(155deg, #eef6ea 0%, #d8ecc8 42%, #b8d9a4 100%);
  --leaf: #5fad5a;
  --warn: #5c4a2e;
  --warn-bg: rgba(251, 244, 230, 0.72);
  --warn-border: rgba(232, 217, 176, 0.75);
  --error: #8a2a22;
  --error-bg: rgba(253, 240, 238, 0.78);
  --error-border: #f0c0ba;
  --surface-glass: rgba(255, 252, 248, 0.42);
  --surface-glass-strong: rgba(255, 252, 248, 0.52);
  --glass-border: rgba(255, 255, 255, 0.68);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.75), inset 0 0 0 1px rgba(255, 255, 255, 0.22);
  --blur-hero: blur(34px) saturate(1.35);
  --blur-card: blur(28px) saturate(1.3);
  --blur-header: blur(22px) saturate(1.35);
  --bg-overlay: linear-gradient(
    165deg,
    rgba(236, 245, 220, 0.38) 0%,
    rgba(210, 225, 175, 0.22) 45%,
    rgba(170, 200, 140, 0.32) 100%
  );
  --bg-image: url("../assets/leaf-bg.webp");
  --beige: #f3ead8;
  --beige-text: #5c4e36;
  --beige-border: #e0d2b4;
}

/* Season + region theme tracks */
html[data-season="early-fall"][data-region="north-fl"],
html[data-season="early-fall"][data-region="central-fl"] {
  --bg: #f2f5ee;
  --bg-tint: #eaf1e4;
  --accent: #2d6e3a;
  --accent-soft: #d6ead8;
  --accent-strong: #1c4f26;
  --border: #c5d4c0;
  --chip: #e8f2e6;
  --hero-gradient: linear-gradient(155deg, #eef6ea 0%, #d4e8c4 48%, #b4d09a 100%);
  --leaf: #6fb044;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(230, 242, 224, 0.36) 0%,
    rgba(200, 228, 180, 0.2) 48%,
    rgba(170, 205, 150, 0.3) 100%
  );
}

html[data-season="early-fall"][data-region="south-fl"] {
  --bg: #f0f7f3;
  --bg-tint: #e4f2eb;
  --accent: #1c7a4e;
  --accent-soft: #ccefe0;
  --accent-strong: #145538;
  --border: #b8d9c8;
  --chip: #e2f4ec;
  --hero-gradient: linear-gradient(155deg, #e6f7ef 0%, #b8e6d0 52%, #84d0b4 100%);
  --leaf: #2aaf9a;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(220, 245, 235, 0.36) 0%,
    rgba(170, 220, 200, 0.2) 50%,
    rgba(130, 200, 175, 0.3) 100%
  );
}

html[data-season="late-fall"] {
  --bg: #f6f2ea;
  --bg-tint: #f0e8dc;
  --text: #2a2218;
  --text-muted: #5c5346;
  --accent: #8a5528;
  --accent-soft: #f0e0cc;
  --accent-strong: #5e3a16;
  --border: #d4c4a8;
  --border-subtle: #e6dcc8;
  --chip: #f3e8d8;
  --hero-gradient: linear-gradient(155deg, #faf4ea 0%, #ead4b0 48%, #d4b084 100%);
  --leaf: #c87035;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(250, 242, 228, 0.4) 0%,
    rgba(230, 210, 175, 0.24) 50%,
    rgba(210, 180, 140, 0.32) 100%
  );
}

html[data-season="winter"] {
  --bg: #eef3f2;
  --bg-tint: #e4eceb;
  --text: #162826;
  --text-muted: #4a5c5a;
  --accent: #2a5c56;
  --accent-soft: #d2e8e4;
  --accent-strong: #1a3c38;
  --border: #b4cbc6;
  --border-subtle: #d0dedb;
  --chip: #deeeeb;
  --hero-gradient: linear-gradient(155deg, #e8f2f0 0%, #c2dbd6 50%, #94c0b8 100%);
  --leaf: #3daaa0;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(228, 240, 236, 0.4) 0%,
    rgba(190, 220, 210, 0.22) 50%,
    rgba(150, 195, 185, 0.32) 100%
  );
}

html[data-season="spring"] {
  --bg: #f4f9f1;
  --bg-tint: #eaf4e4;
  --accent: #3a8a3e;
  --accent-soft: #dcf0d6;
  --accent-strong: #266028;
  --border: #c2d6b4;
  --border-subtle: #dce8d4;
  --chip: #e6f4de;
  --hero-gradient: linear-gradient(155deg, #f0f8e8 0%, #d2eabc 42%, #b0dc88 100%);
  --leaf: #7cbe42;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(236, 248, 228, 0.36) 0%,
    rgba(200, 230, 170, 0.2) 48%,
    rgba(170, 215, 130, 0.3) 100%
  );
}

html[data-season="summer"] {
  --bg: #f4f9f4;
  --bg-tint: #e6f2e8;
  --accent: #187a3a;
  --accent-soft: #d4f0e0;
  --accent-strong: #125428;
  --border: #b4d4be;
  --border-subtle: #d4e8da;
  --chip: #e0f4e8;
  --hero-gradient: linear-gradient(155deg, #eaf6ee 0%, #b4e0c0 48%, #72c888 100%);
  --leaf: #3aa048;
  --bg-overlay: linear-gradient(
    165deg,
    rgba(228, 246, 232, 0.36) 0%,
    rgba(170, 220, 185, 0.2) 48%,
    rgba(110, 195, 135, 0.3) 100%
  );
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
  line-height: 1.6;
  background-color: var(--bg);
  background-image: var(--bg-overlay), var(--bg-image);
  background-size: cover, cover;
  background-position: center, center;
  background-repeat: no-repeat, no-repeat;
  background-attachment: scroll, scroll;
  transition: background-color var(--transition), color var(--transition);
}

@media (min-width: 900px) {
  body {
    background-attachment: scroll, fixed;
  }
}

h1, h2, h3 {
  line-height: 1.25;
  font-weight: 600;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
}

/* Glass surface helper */
.glass {
  background: var(--surface-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm), var(--glass-highlight);
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
}

/* ——— Header ——— */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
  background: rgba(255, 252, 248, 0.45);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: var(--blur-header);
  -webkit-backdrop-filter: var(--blur-header);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  font-variation-settings: "SOFT" 40, "WONK" 0.4;
  color: var(--accent-strong);
  text-decoration: none;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.logo:hover {
  color: var(--accent);
}

.logo span {
  color: var(--leaf);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem 1rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.nav {
  display: flex;
  gap: 0.15rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 550;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-pill);
  transition: color var(--transition), background var(--transition);
}

.nav a:hover {
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.55);
}

.nav a[aria-current="page"] {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.theme-pill {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-pill);
  background: var(--accent-strong);
  color: #f4faf4;
  border: 1px solid color-mix(in srgb, var(--accent-strong) 80%, #000);
  white-space: nowrap;
  letter-spacing: 0.01em;
  box-shadow: 0 1px 3px rgba(20, 40, 20, 0.18);
}

/* ——— Layout ——— */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3.5rem;
}

.muted {
  color: var(--text-muted);
}

.muted-sm {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ——— Hero (frosted glass) ——— */
.hero {
  background: var(--surface-glass-strong);
  border-radius: var(--radius);
  padding: 2.1rem 1.75rem;
  box-shadow: var(--shadow), var(--glass-highlight);
  border: 1px solid var(--glass-border);
  margin-bottom: 1.35rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--blur-hero);
  -webkit-backdrop-filter: var(--blur-hero);
}

.hero::after {
  content: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 5vw, 2.75rem);
  font-weight: 700;
  margin: 0 0 0.55rem;
  letter-spacing: -0.035em;
  color: #1a1510;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
}

.hero > p,
.hero-lead {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  max-width: 38rem;
  font-size: 1.08rem;
  line-height: 1.55;
}

.hero .meta-row {
  margin-bottom: 1.1rem;
}

.hero .tags {
  margin: 0.35rem 0 0.85rem;
}

.hero-actions {
  margin: 0;
}

/* ——— ZIP form ——— */
.zip-form {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  max-width: 28rem;
}

.zip-control {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  max-width: 100%;
}

.zip-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.zip-form .zip-field-inner {
  display: flex;
  align-items: stretch;
}

.zip-form input[type="text"] {
  font: inherit;
  font-size: 1.15rem;
  font-weight: 550;
  letter-spacing: 0.12em;
  padding: 0.85rem 1rem;
  border: none;
  min-width: 9rem;
  width: 9.5rem;
  background: transparent;
  color: var(--text);
}

.zip-form input[type="text"]::placeholder {
  color: color-mix(in srgb, var(--text-muted) 55%, transparent);
  letter-spacing: 0.08em;
  font-weight: 400;
}

.zip-form input:focus {
  outline: none;
}

.zip-control:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow-focus), var(--shadow-sm);
}

.zip-control .btn {
  border-radius: 0;
  padding: 0.85rem 1.25rem;
  align-self: stretch;
}

/* ——— Buttons ——— */
.btn {
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.3rem;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: background var(--transition), transform 120ms ease, box-shadow var(--transition);
  box-shadow: 0 3px 12px rgba(20, 40, 20, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn:hover {
  background: var(--accent-strong);
  color: #fff;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--accent-strong);
  border: 1.5px solid var(--border);
  box-shadow: none;
}

.btn-ghost:hover {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  color: var(--accent-strong);
}

.btn-secondary {
  background: var(--beige);
  color: var(--beige-text);
  border: 1.5px solid var(--beige-border);
  box-shadow: none;
  font-weight: 550;
}

.btn-secondary:hover {
  background: color-mix(in srgb, var(--beige) 70%, #fff);
  color: var(--text);
}

/* ——— Sample ZIP chips ——— */
.sample-zips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.sample-zip {
  font: inherit;
  font-size: 0.88rem;
  font-weight: 550;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-pill);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 70%, #fff);
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 120ms ease;
}

.sample-zip:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.sample-zip:active {
  transform: scale(0.97);
}

.sample-zip .zip-code {
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
}

.sample-zip .zip-meta {
  color: var(--text-muted);
  font-weight: 450;
}

/* ——— Notices ——— */
.notice {
  margin: 0 0 1.25rem;
  padding: 0.95rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--warn-bg);
  color: var(--warn);
  border: 1px solid var(--warn-border);
  font-size: 0.92rem;
  line-height: 1.5;
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  box-shadow: var(--shadow-sm), var(--glass-highlight);
}

.notice.error {
  background: var(--error-bg);
  color: var(--error);
  border-color: var(--error-border);
}

/* ——— Cards ——— */
.card {
  background: var(--surface-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.45rem 1.4rem;
  box-shadow: var(--shadow-sm), var(--glass-highlight);
  margin-bottom: 1.25rem;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
}

.card h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 0.85rem;
}

.card-intro {
  margin: -0.35rem 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--accent) 58%, #6a9a6e);
  border: 1px solid color-mix(in srgb, var(--accent-strong) 35%, transparent);
  font-size: 0.82rem;
  font-weight: 550;
  color: #f4faf4;
  box-shadow: 0 1px 3px rgba(20, 40, 20, 0.12);
}

/* ——— Filters control box ——— */
.filters-box {
  background: var(--surface-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.25rem;
  box-shadow: var(--shadow-sm), var(--glass-highlight);
  margin-bottom: 1.25rem;
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
}

.filters-box > h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.filters {
  display: grid;
  gap: 1rem;
}

.filters fieldset {
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-radius: var(--radius-sm);
  padding: 0.95rem 1rem 1.05rem;
  margin: 0;
  background: rgba(255, 255, 255, 0.28);
}

.filters legend {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0.01em;
  color: var(--text-muted);
  padding: 0 0.4rem;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Soft green filter pills with ✓ when checked */
.filter-options label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 550;
  cursor: pointer;
  padding: 0.45rem 0.95rem 0.45rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  background: rgba(255, 255, 255, 0.55);
  color: var(--text-muted);
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
  user-select: none;
}

.filter-options label:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  color: var(--text);
}

.filter-options input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1.05rem;
  height: 1.05rem;
  margin: 0;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  background: #fff;
  flex-shrink: 0;
  display: grid;
  place-content: center;
  transition: background var(--transition), border-color var(--transition);
}

.filter-options input[type="checkbox"]::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  transform: scale(0);
  transition: transform 120ms ease;
  box-shadow: inset 1rem 1rem #fff;
  clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0, 43% 62%);
}

.filter-options input[type="checkbox"]:checked {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-strong) 25%, transparent);
}

.filter-options input[type="checkbox"]:checked::before {
  transform: scale(1);
  box-shadow: inset 1rem 1rem var(--accent-strong);
}

.filter-options label:has(input:checked) {
  background: var(--accent);
  border-color: var(--accent-strong);
  color: #f4faf4;
  box-shadow: 0 2px 8px rgba(20, 40, 20, 0.16);
}

.filter-options input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.filters-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.25rem;
}

/* ——— Plant list ——— */
.plant-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.plant-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.85rem;
  align-items: center;
  padding: 1.1rem 1.15rem;
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.42);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition), transform 120ms ease;
}

.plant-row:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.62);
}

.plant-row:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow-focus);
}

.plant-row h3 {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.plant-row h3 a {
  text-decoration: none;
  color: var(--text);
}

.plant-row h3 a:hover {
  color: var(--accent-strong);
}

.plant-row .summary {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.plant-row .btn {
  white-space: nowrap;
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.55rem;
}

.tag {
  font-size: 0.68rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.22rem 0.55rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.tag.stage {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
}

/* ——— Empty state ——— */
.empty-state {
  text-align: center;
  padding: 2.5rem 1.25rem;
  color: var(--text-muted);
}

.empty-state-icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  display: grid;
  place-content: center;
  color: var(--accent);
}

.empty-state-icon svg {
  width: 1.6rem;
  height: 1.6rem;
}

.empty-state p {
  margin: 0.35rem 0;
  max-width: 26rem;
  margin-left: auto;
  margin-right: auto;
}

.empty-state p:first-of-type {
  font-weight: 600;
  color: var(--text);
  font-size: 1.05rem;
}

/* ——— Plant detail ——— */
.plant-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 550;
  text-decoration: none;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.plant-back:hover {
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.85);
}

.plant-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  padding: 3rem 1rem;
  color: var(--text-muted);
  background: var(--surface-glass);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--blur-card);
  -webkit-backdrop-filter: var(--blur-card);
  box-shadow: var(--shadow-sm), var(--glass-highlight);
}

.plant-loading-spinner {
  width: 2rem;
  height: 2rem;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.stage-card h2 {
  font-size: 1.1rem;
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(4.4rem, 1fr));
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.month-cell {
  text-align: center;
  padding: 0.5rem 0.25rem;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  color: var(--text-muted);
  transition: background var(--transition), border-color var(--transition);
}

.month-cell.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
  font-weight: 700;
}

/* ——— How it works ——— */
.steps {
  margin: 0;
  padding-left: 1.35rem;
}

.steps li {
  margin-bottom: 0.55rem;
  padding-left: 0.25rem;
}

.steps li::marker {
  color: var(--accent);
  font-weight: 700;
}

/* ——— About / prose ——— */
.prose h1,
.prose h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.45rem;
}

.source-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 1rem;
}

.source-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border-subtle) 80%, transparent);
}

.source-list li:first-child {
  padding-top: 0.25rem;
}

.source-note {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--border-subtle);
}

/* ——— Footer ——— */
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 2.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer p {
  margin: 0.35rem 0;
  padding: 0.65rem 1rem;
  background: rgba(255, 252, 248, 0.4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  box-shadow: var(--glass-highlight);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Reduced transparency / no backdrop-filter fallbacks */
@media (prefers-reduced-transparency: reduce) {
  body {
    background-image: none;
    background-color: var(--bg);
  }

  .hero,
  .card,
  .filters-box,
  .site-header,
  .notice,
  .plant-loading,
  .site-footer p,
  .plant-back {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: #faf7f0;
    box-shadow: var(--shadow-sm);
  }

  .chip {
    background: var(--accent-soft);
    color: var(--accent-strong);
  }

  .filter-options label:has(input:checked) {
    background: var(--accent-soft);
    color: var(--accent-strong);
    border-color: var(--accent);
  }

  .filter-options input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
  }

  .filter-options input[type="checkbox"]:checked::before {
    box-shadow: inset 1rem 1rem #fff;
  }

  .plant-row,
  .filters fieldset,
  .month-cell {
    background: var(--bg-tint);
  }
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .hero,
  .card,
  .filters-box,
  .site-header,
  .notice,
  .plant-loading {
    background: #faf7f0;
  }
}

/* ——— Mobile ——— */
@media (max-width: 768px) {
  body {
    background-attachment: scroll, scroll;
  }

  .site-header {
    padding: 0.7rem 1rem;
  }

  .header-tools {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .nav {
    flex: 1;
  }

  .hero {
    padding: 1.75rem 1.25rem;
  }

  main {
    padding: 1.35rem 1rem 2.75rem;
  }
}

@media (max-width: 560px) {
  .plant-row {
    grid-template-columns: 1fr;
  }

  .plant-row .btn {
    width: 100%;
  }

  .zip-control {
    width: 100%;
    flex-direction: column;
  }

  .zip-form input[type="text"] {
    width: 100%;
    min-width: 0;
  }

  .zip-control .btn {
    width: 100%;
  }

  .theme-pill {
    font-size: 0.65rem;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .filters-actions {
    justify-content: stretch;
  }

  .filters-actions .btn {
    width: 100%;
  }

  .month-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@supports not (color: color-mix(in srgb, red 50%, blue)) {
  :root {
    --shadow-focus: 0 0 0 3px rgba(42, 107, 60, 0.35);
  }

  .hero {
    border-color: var(--border);
  }

  .plant-row:hover {
    border-color: var(--accent);
  }

  .chip {
    background: var(--accent-soft);
    border-color: var(--border);
  }
}