/* CoSE Token Mappings & Plant Pathway Atlas (PPA) Theme */
:root {
  --ppa-bg:     var(--bg,        #ffffff);
  --ppa-ink:    var(--ink,       #1a2230);
  --ppa-soft:   var(--muted,     #5a6473);
  --ppa-faint:  var(--ink-faint, #8892a3);
  --ppa-rule:   var(--line,      #e5e9f0);
  --ppa-card:   var(--surface,   #f7f9fc);
  --ppa-card2:  var(--surface-2, #eef2f8);
  --ppa-accent: var(--accent,    #3B6EA5);
  --ppa-accent-hover: #2d5682;
  --ppa-accent2:var(--accent2,   #3FB6A8);
  --ppa-warn:   #D55E00;
  --ppa-err:    #DC2626;
  --header-bg:  linear-gradient(180deg, rgba(59,110,165,.30), rgba(59,110,165,.04));
}

html[data-theme="light"] {
  --bg: #ffffff;
  --ink: #1a2230;
  --fg: #1a2230;
  --muted: #5a6473;
  --ink-soft: #5a6473;
  --line: #e5e9f0;
  --border: #e5e9f0;
  --surface: #f7f9fc;
  --card: #f7f9fc;
  --surface-2: #eef2f8;
  --accent: #3B6EA5;
  --accent2: #3FB6A8;
  --header-bg: linear-gradient(180deg, rgba(59,110,165,.30), rgba(59,110,165,.04));
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #0f141b;
  --ink: #e6ebf2;
  --fg: #e6ebf2;
  --muted: #9aa6b6;
  --ink-soft: #9aa6b6;
  --line: #232c39;
  --border: #232c39;
  --surface: #161d27;
  --card: #161d27;
  --surface-2: #1f2937;
  --accent: #6ea3d8;
  --accent2: #54c9ba;
  --header-bg: linear-gradient(180deg, rgba(59,110,165,.12), transparent);
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--ppa-bg);
  color: var(--ppa-ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  transition: background 0.2s ease, color 0.2s ease;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 96px;
}

/* CoSE Topbar (Brand + Theme Button, NO Side Rail) */
.cose-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--ppa-rule);
  margin-bottom: 12px;
}

.cose-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ppa-ink);
  text-decoration: none;
}
.cose-brand:hover { text-decoration: none; }
.cose-brand img { height: 28px; width: 28px; border-radius: 6px; display: block; }

.cose-theme-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--ppa-rule);
  background: var(--ppa-card);
  color: var(--ppa-ink);
  font: 600 0.84rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.cose-theme-btn:hover { filter: brightness(0.97); }
.cose-theme-btn svg { width: 14px; height: 14px; display: block; }

/* CoSE Tab Navigation Bar (Horizontal only, no side panel) */
.cose-tab-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  padding: 10px 0 14px;
  border-bottom: 1px solid var(--ppa-rule);
  margin-bottom: 24px;
}

.tab-label {
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ppa-soft);
  margin: 0 2px 0 6px;
}

/* CoSE Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.86rem;
  border: 1px solid var(--ppa-rule);
  background: var(--ppa-card);
  color: var(--ppa-ink);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover {
  text-decoration: none;
  border-color: var(--ppa-accent);
  background: var(--ppa-card2);
  color: var(--ppa-accent);
}
.btn.primary {
  background: var(--ppa-accent);
  border-color: var(--ppa-accent);
  color: #ffffff;
}
.btn.primary:hover {
  filter: brightness(1.08);
  background: var(--ppa-accent);
  color: #ffffff;
}
.btn.active {
  border-color: var(--ppa-accent);
  background: var(--ppa-card2);
  color: var(--ppa-accent);
  box-shadow: inset 0 0 0 1px var(--ppa-accent);
}

.ppa-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(59, 110, 165, 0.14);
  color: var(--ppa-accent);
}

/* Hero Section */
header.hero {
  padding: 38px 0 26px;
  border-bottom: 1px solid var(--ppa-rule);
  background: var(--header-bg);
  border-radius: 0 0 12px 12px;
  margin-bottom: 28px;
}

h1 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.18;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.eyebrow {
  color: var(--ppa-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin: 0 0 8px;
}

.lede {
  font-size: 1.12rem;
  color: var(--ppa-soft);
  max-width: 65ch;
  margin: 0 0 18px;
}

h2 { font-size: 1.35rem; margin: 38px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; margin: 24px 0 6px; }
p, li { max-width: 74ch; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: var(--ppa-card);
  padding: 2px 6px;
  border-radius: 4px;
}
pre {
  overflow-x: auto;
  max-width: 100%;
  background: var(--ppa-card);
  padding: 14px;
  border-radius: 8px;
  border: 1px solid var(--ppa-rule);
}
pre code { background: none; padding: 0; }

/* Map Cards Grid */
.map-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin: 26px 0;
}

.map-card {
  border: 1px solid var(--ppa-rule);
  border-radius: 12px;
  background: var(--ppa-card);
  overflow: hidden;
  transition: transform 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
}

.map-card:hover {
  transform: translateY(-2px);
  border-color: var(--ppa-accent);
}

.map-card-preview {
  background: #ffffff;
  padding: 14px;
  border-bottom: 1px solid var(--ppa-rule);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
}

.map-card-preview img, .map-card-preview svg, .map-card-preview object {
  max-width: 100%;
  height: auto;
  max-height: 200px;
  display: block;
}

.map-card-body {
  padding: 16px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.map-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--ppa-ink);
}

.map-card-desc {
  font-size: 0.88rem;
  color: var(--ppa-soft);
  line-height: 1.45;
  margin-bottom: 14px;
  flex: 1;
}

/* File Drop Area */
.dropzone {
  border: 2px dashed var(--ppa-rule);
  border-radius: 14px;
  padding: 34px 20px;
  text-align: center;
  background: var(--ppa-card);
  transition: border-color 0.15s ease, background 0.15s ease;
  cursor: pointer;
  margin-bottom: 24px;
}

.dropzone.dragover {
  border-color: var(--ppa-accent);
  background: var(--ppa-card2);
}

/* Controls Toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  background: var(--ppa-card);
  border: 1px solid var(--ppa-rule);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 24px;
}

.toolbar label {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ppa-soft);
  margin-bottom: 4px;
}

.toolbar select, .toolbar input {
  padding: 7px 11px;
  border-radius: 8px;
  border: 1px solid var(--ppa-rule);
  background: var(--ppa-bg);
  color: var(--ppa-ink);
  font: inherit;
  font-size: 0.88rem;
}

/* Interactive Viewport */
.svg-viewport {
  background: #ffffff;
  border: 1px solid var(--ppa-rule);
  border-radius: 12px;
  overflow: auto;
  padding: 20px;
  margin-bottom: 30px;
}

.svg-viewport svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Message Banners */
.msg {
  padding: 13px 17px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  border: 1px solid transparent;
}
.msg.ok {
  background: rgba(63, 182, 168, 0.12);
  border-color: var(--ppa-accent2);
  color: var(--ppa-ink);
}
.msg.warn {
  background: rgba(213, 94, 0, 0.10);
  border-color: var(--ppa-warn);
  color: var(--ppa-ink);
}
.msg.err {
  background: rgba(220, 38, 38, 0.10);
  border-color: var(--ppa-err);
  color: var(--ppa-ink);
}

/* CoSE Footer */
footer {
  border-top: 1px solid var(--ppa-rule);
  margin-top: 56px;
  padding-top: 22px;
  font-size: 0.88rem;
  color: var(--ppa-soft);
}
.cose-foot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  vertical-align: middle;
  margin-right: 9px;
  font-weight: 600;
  color: var(--ppa-ink);
  text-decoration: none;
}
.cose-foot img {
  height: 20px;
  width: 20px;
  display: block;
  border-radius: 5px;
}
.cose-foot:hover { text-decoration: none; filter: brightness(1.05); }