/* GreenMan Payments — shared design system.
   Minimalist, light, Apple-esque: system type, generous whitespace,
   hairline borders, a single forest-green accent, pill buttons. */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;   /* light gray section / inset */
  --panel: #ffffff;     /* cards */
  --panel-2: #f5f5f7;   /* nested panels / inputs */
  --accent: #1b6e3c;    /* forest green */
  --accent-hover: #155a30;
  --accent-2: #1b6e3c;  /* kept for legacy var() refs */
  --text: #1d1d1f;      /* near-black */
  --muted: #6e6e73;     /* secondary text */
  --faint: #86868b;     /* tertiary */
  --ok: #1d9d4f;
  --warn: #b25000;
  --err: #d70015;
  --border: #d2d2d7;    /* hairline */
  --border-soft: #e8e8ed;
  --radius: 18px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Helvetica Neue", "Segoe UI", Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.47;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ─── Top nav ───────────────────────────────────────────── */
nav.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 32px;
  height: 52px;
  border-bottom: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  position: sticky;
  top: 0;
  z-index: 10;
}
nav.top .brand {
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--text);
}
nav.top ul {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav.top ul a { color: var(--text); font-size: 14px; opacity: 0.8; }
nav.top ul a:hover { color: var(--accent); opacity: 1; text-decoration: none; }

/* ─── Layout ────────────────────────────────────────────── */
.container { max-width: 1040px; margin: 0 auto; padding: 0 24px 96px; }

/* ─── Hero ──────────────────────────────────────────────── */
section.hero { padding: 96px 0 56px; text-align: center; }
.hero h1 {
  margin: 0 0 18px;
  font-size: 64px;
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.035em;
  color: var(--text);
}
.hero p.lede {
  max-width: 600px;
  margin: 0 auto 36px;
  color: var(--muted);
  font-size: 21px;
  letter-spacing: -0.02em;
}
.cta-row { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 980px;
  font-weight: 400;
  font-size: 16px;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg);
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.btn:hover { text-decoration: none; background: var(--bg-soft); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-hover); color: #fff; }

button.submit {
  margin-top: 24px;
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 980px;
  font-weight: 500;
  font-size: 17px;
  cursor: pointer;
  transition: background 0.18s;
}
button.submit:hover { background: var(--accent-hover); }
button.submit:disabled { opacity: 0.5; cursor: progress; }

button.ghost {
  padding: 10px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 980px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.18s;
}
button.ghost:hover { background: var(--bg-soft); }

/* ─── Status bar (home) ─────────────────────────────────── */
section.statusbar {
  margin-top: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 22px 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 18px;
  text-align: left;
}
.stat .label {
  font-size: 12px;
  letter-spacing: -0.01em;
  color: var(--faint);
}
.stat .value {
  margin-top: 5px;
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
}

/* ─── Pills ─────────────────────────────────────────────── */
.pill {
  display: inline-block;
  padding: 3px 11px;
  border-radius: 980px;
  font-size: 12px;
  letter-spacing: -0.01em;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--muted);
}
.pill.ok   { color: var(--ok);   border-color: rgba(29,157,79,0.35);  background: rgba(29,157,79,0.08); }
.pill.warn { color: var(--warn); border-color: rgba(178,80,0,0.35);   background: rgba(178,80,0,0.08); }
.pill.err  { color: var(--err);  border-color: rgba(215,0,21,0.35);   background: rgba(215,0,21,0.08); }

/* ─── Section title ─────────────────────────────────────── */
h2.section-title {
  font-size: 28px;
  letter-spacing: -0.03em;
  color: var(--text);
  margin: 80px 0 28px;
  font-weight: 600;
}

/* ─── Navigation cards (home) ───────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card-link {
  display: block;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform 0.18s, box-shadow 0.18s;
}
.card-link:hover {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.1);
}
.card-link .icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--bg-soft);
  margin-bottom: 18px;
  font-size: 22px;
}
.card-link h3 { margin: 0 0 8px; font-size: 21px; font-weight: 600; letter-spacing: -0.02em; }
.card-link p { margin: 0; color: var(--muted); font-size: 15px; }
.card-link .arrow {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  font-size: 15px;
}

/* ─── Flow steps (home) ─────────────────────────────────── */
.flow {
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 32px;
}
.flow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}
.step { position: relative; padding-top: 8px; }
.step .n {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
  font-size: 14px;
  border-radius: 50%;
  margin-bottom: 12px;
}
.step h4 { margin: 0 0 6px; font-size: 16px; font-weight: 600; letter-spacing: -0.02em; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
  text-align: center;
  color: var(--faint);
  font-size: 13px;
}
footer a { color: var(--faint); }

/* ─── Page header (form pages) ──────────────────────────── */
header.page {
  padding: 64px 24px 8px;
  text-align: center;
}
header.page h1 {
  margin: 0;
  font-weight: 600;
  font-size: 40px;
  letter-spacing: -0.03em;
  color: var(--text);
}
header.page p { margin: 12px 0 0; color: var(--muted); font-size: 17px; }

/* ─── Cards / forms ─────────────────────────────────────── */
.card {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 20px; font-size: 21px; font-weight: 600; letter-spacing: -0.02em; }

label {
  display: block;
  margin: 18px 0 7px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.01em;
}
input, select {
  width: 100%;
  padding: 13px 15px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 17px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}
input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(27,110,60,0.18);
}
.row { display: flex; gap: 14px; }
.row > * { flex: 1; }

/* ─── Result / banners ──────────────────────────────────── */
.result { margin-top: 24px; }
.result-card {
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 16px;
  margin-top: 12px;
}
.result-card label { margin: 0 0 8px; }
.copy-row { display: flex; gap: 8px; }
.copy-row input { font-family: ui-monospace, monospace; font-size: 13px; }
.copy-btn {
  padding: 0 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  white-space: nowrap;
  transition: background 0.15s;
}
.copy-btn:hover { background: var(--bg-soft); }
.copy-btn.copied { background: var(--ok); color: #fff; border-color: var(--ok); }

.success {
  margin-top: 16px;
  background: rgba(29,157,79,0.08);
  border: 1px solid rgba(29,157,79,0.35);
  color: var(--ok);
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
}
.error {
  margin-top: 16px;
  background: rgba(215,0,21,0.07);
  border: 1px solid rgba(215,0,21,0.35);
  color: var(--err);
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
}
.banner {
  margin-top: 16px;
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
  border: 1px solid;
}
.banner.ok  { background: rgba(29,157,79,0.08); border-color: rgba(29,157,79,0.35); color: var(--ok); }
.banner.err { background: rgba(215,0,21,0.07); border-color: rgba(215,0,21,0.35); color: var(--err); }
.banner a { color: inherit; text-decoration: underline; }

.footer { margin-top: 32px; text-align: center; color: var(--faint); font-size: 14px; }
.footer a { color: var(--accent); text-decoration: none; }

/* ─── Spinner ───────────────────────────────────────────── */
.spinner {
  display: none;
  margin: 20px auto;
  width: 26px;
  height: 26px;
  border: 3px solid var(--border-soft);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner.inline {
  display: inline-block;
  width: 14px; height: 14px;
  border-width: 2px;
  margin: 0;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Admin: token bar + preview + kv-grid ──────────────── */
.token-bar {
  display: flex; gap: 10px; align-items: center;
  margin-bottom: 20px;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
}
.token-bar input { padding: 9px 12px; font-size: 14px; }
.token-bar .label { font-size: 14px; color: var(--muted); white-space: nowrap; }

.preview {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px dashed var(--border);
  border-radius: 12px;
  font-size: 15px;
  color: var(--muted);
}
.preview strong { color: var(--text); }

.kv-grid { display: grid; grid-template-columns: 160px 1fr; gap: 12px 18px; font-size: 15px; }
.kv-grid .k { color: var(--muted); }
.kv-grid .v { font-family: ui-monospace, monospace; word-break: break-all; }
.kv-grid .v a { color: var(--accent); text-decoration: none; }
.kv-grid .v a:hover { text-decoration: underline; }

/* ─── Dashboard ─────────────────────────────────────────── */
header.dash { padding: 28px 24px; display: flex; justify-content: space-between; align-items: center; }
header.dash h1 { margin: 0; font-size: 28px; font-weight: 600; letter-spacing: -0.03em; }
.nav a { color: var(--accent); text-decoration: none; margin-left: 18px; font-size: 15px; }
.summary { padding: 0 24px 18px; color: var(--muted); font-size: 14px; }

.tx {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.tx-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px; flex-wrap: wrap; gap: 12px;
}
.tx-head h3 { margin: 0; font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.tx-head code { font-size: 12px; color: var(--faint); }
.status {
  padding: 4px 12px;
  border-radius: 980px;
  font-size: 12px;
  letter-spacing: -0.01em;
}
.status.settled { background: rgba(29,157,79,0.1);  color: var(--ok);   border: 1px solid rgba(29,157,79,0.35); }
.status.pending { background: rgba(178,80,0,0.1);   color: var(--warn); border: 1px solid rgba(178,80,0,0.35); }
.status.failed  { background: rgba(215,0,21,0.08);  color: var(--err);  border: 1px solid rgba(215,0,21,0.35); }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 6px; }
@media (max-width: 720px) { .grid { grid-template-columns: 1fr; } }
.panel {
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 18px;
}
.panel h4 {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--faint);
}
.kv { display: flex; justify-content: space-between; padding: 5px 0; font-size: 14px; gap: 12px; }
.kv .k { color: var(--muted); }
.kv .v { font-family: ui-monospace, monospace; font-size: 13px; word-break: break-all; text-align: right; }
.kv .v a { color: var(--accent); text-decoration: none; }

.verdict {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}
.v-likely-yes, .v-yes, .v-high, .v-extreme { background: rgba(215,0,21,0.1);  color: var(--err); }
.v-likely-no, .v-no, .v-low               { background: rgba(29,157,79,0.1);  color: var(--ok); }
.v-ambiguous, .v-medium                    { background: rgba(178,80,0,0.1);   color: var(--warn); }

.academic-notes {
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  border-radius: 8px;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--muted);
}
.empty { text-align: center; padding: 80px 20px; color: var(--muted); }
.analysis-meta { font-size: 12px; color: var(--faint); margin-top: 10px; }

/* ─── Centered single-card pages (checkout) ─────────────── */
body.center { display: grid; place-items: center; padding: 24px; }
.center .card { max-width: 460px; text-align: center; margin: 0; }
.center .tick { font-size: 44px; margin-bottom: 12px; line-height: 1; }
.center h1 { margin: 0 0 12px; font-size: 28px; font-weight: 600; letter-spacing: -0.03em; }
.center h1.ok   { color: var(--ok); }
.center h1.warn { color: var(--warn); }
.center p { color: var(--muted); line-height: 1.5; font-size: 16px; }

/* ─── Merchant portal ───────────────────────────────────── */
.auth-tabs { display: flex; gap: 8px; margin-bottom: 22px; }
.auth-tabs button {
  flex: 1; padding: 10px; border-radius: 980px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font-size: 15px; cursor: pointer; transition: background 0.18s, color 0.18s;
}
.auth-tabs button.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.metric-card {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.metric-card .num { font-size: 32px; font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; }
.metric-card .cap { font-size: 13px; color: var(--faint); margin-top: 6px; }

.link-row {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.link-row .lr-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; flex-wrap: wrap; }
.link-row h3 { margin: 0; font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.link-row .amt { color: var(--muted); font-size: 15px; margin-top: 3px; }
.link-row .lr-metrics { display: flex; gap: 28px; margin-top: 18px; flex-wrap: wrap; }
.lr-metrics .m .n { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.lr-metrics .m .l { font-size: 12px; color: var(--faint); margin-top: 2px; }
.link-row .lr-url { margin-top: 16px; }
.toggle-btn {
  padding: 6px 14px; border-radius: 980px; cursor: pointer; font-size: 13px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  transition: background 0.18s;
}
.toggle-btn:hover { background: var(--bg-soft); }
.muted { color: var(--muted); }
.center form { text-align: left; margin-top: 8px; }
.center .pay-amount { font-size: 44px; font-weight: 600; letter-spacing: -0.03em; margin: 8px 0 4px; }

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero h1 { font-size: 44px; }
  .hero p.lede { font-size: 18px; }
  nav.top { padding: 0 16px; }
  nav.top ul { gap: 18px; }
  header.page h1 { font-size: 32px; }
}