:root {
  --ink: #13221c;
  --ink-soft: #3a4f46;
  --paper: #f3efe6;
  --paper-2: #e7f0ea;
  --accent: #0f7a5f;
  --accent-deep: #0a5241;
  --accent-bright: #1aa37f;
  --line: rgba(19, 34, 28, 0.12);
  --warn: #b45a1b;
  --shadow: 0 24px 60px rgba(19, 34, 28, 0.12);
  --radius: 18px;
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d8efe4 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #f0e2c8 0%, transparent 50%),
    linear-gradient(180deg, #f7f4ee 0%, #eef3ef 45%, #f3efe6 100%);
  line-height: 1.5;
}

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(19, 34, 28, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 34, 28, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  opacity: 0.55;
  z-index: 0;
}

.topbar, main, .site-footer { position: relative; z-index: 1; }

.topbar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.1rem clamp(1.2rem, 4vw, 3rem);
  max-width: 1120px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-style: italic;
  color: var(--accent);
}
.brand-name {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.15rem;
}

.top-nav {
  display: flex;
  gap: 1rem;
  margin-left: 0.5rem;
}
.top-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}
.top-nav a:hover { color: var(--accent-deep); }

.prefs {
  margin-left: auto;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.pref {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--ink-soft);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pref select {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.7);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font: inherit;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(1.2rem, 4vw, 3rem) 4rem;
}
main.narrow { max-width: 720px; }

.hero {
  min-height: calc(100vh - 120px);
  display: grid;
  align-content: center;
  gap: 2.5rem;
  padding: 2rem 0 3rem;
  animation: rise 0.8s ease both;
}

.brand-hero {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--accent-deep);
}

.hero h1 {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 600;
  max-width: 18ch;
  color: var(--ink);
}

.lede {
  margin: 0.9rem 0 0;
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.query-panel {
  max-width: 720px;
  animation: rise 0.9s 0.1s ease both;
}
.query-row {
  display: flex;
  gap: 0.6rem;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
.query-row input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 0.95rem 1.2rem;
  font: inherit;
  font-size: 1.02rem;
  outline: none;
  color: var(--ink);
}
.query-hint {
  min-height: 1.4rem;
  margin: 0.7rem 0 0 1rem;
  color: var(--warn);
  font-size: 0.92rem;
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.9rem 1.35rem;
  font: inherit;
  font-weight: 700;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
  color: #f7fffb;
  box-shadow: 0 10px 24px rgba(15, 122, 95, 0.28);
}
.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn.wide { width: 100%; }
.btn:disabled { opacity: 0.55; cursor: wait; transform: none; }

.result-section {
  margin-top: 1rem;
  padding: 1.5rem 0 2rem;
  animation: rise 0.55s ease both;
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1rem;
}
.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
}
.source-pill {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(15, 122, 95, 0.12);
  color: var(--accent-deep);
}

.patent-card, .order-summary, .pay-panel, .status-panel, .checkout-form {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  backdrop-filter: blur(8px);
}

.patent-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
}
.meta-row {
  display: grid;
  gap: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.fees-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  margin-top: 1.2rem;
}
@media (max-width: 800px) {
  .fees-grid { grid-template-columns: 1fr; }
  .query-row { flex-direction: column; border-radius: 22px; }
  .top-nav { display: none; }
  .brand-hero { font-size: clamp(2.4rem, 12vw, 3.6rem); }
}

.fee-list { display: grid; gap: 0.65rem; }
.fee-list.payable-scroll {
  max-height: 420px;
  overflow-y: auto;
  padding-right: 4px;
}
.fee-item.selected-default {
  border-color: rgba(15, 122, 95, 0.45);
  box-shadow: 0 0 0 2px rgba(15, 122, 95, 0.12);
}
.fee-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.7rem;
  align-items: start;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--line);
}
.fee-item.muted, .fee-list.muted .fee-item { opacity: 0.72; }
.fee-item input { margin-top: 0.25rem; }
.fee-type { font-weight: 600; }
.fee-deadline { color: var(--ink-soft); font-size: 0.86rem; }
.fee-amount { font-weight: 700; white-space: nowrap; }

.totals {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(15,122,95,0.1), rgba(240,226,200,0.45));
  font-weight: 600;
}
.totals strong { color: var(--accent-deep); font-size: 1.15rem; }

.checkout-form { margin-top: 1.2rem; }
.checkout-form h3 { margin-top: 0; font-family: var(--font-display); font-size: 1.6rem; font-weight: 400; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-bottom: 1rem;
}
@media (max-width: 800px) { .form-grid { grid-template-columns: 1fr; } }
.form-grid label { display: grid; gap: 0.35rem; font-size: 0.86rem; font-weight: 600; color: var(--ink-soft); }
.form-grid input {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

.how { margin-top: 3.5rem; padding-top: 1rem; }
.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}
@media (max-width: 800px) { .flow { grid-template-columns: 1fr 1fr; } }
.flow li {
  padding: 1.1rem 1rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.55);
  border: 1px solid var(--line);
  animation: rise 0.7s ease both;
}
.flow li:nth-child(2) { animation-delay: 0.05s; }
.flow li:nth-child(3) { animation-delay: 0.1s; }
.flow li:nth-child(4) { animation-delay: 0.15s; }
.flow span {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
.flow p { margin: 0; font-weight: 600; }
.batch-note {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.pay-panel, .status-panel { margin-top: 2rem; }
.pay-panel h1, .status-panel h1 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 400;
}
.pay-actions { display: grid; gap: 0.6rem; margin-top: 1rem; }
.order-no { color: var(--ink-soft); font-weight: 600; }

.dropin-box {
  margin-top: 1.2rem;
  padding: 1.2rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.78);
}
.dropin-box h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
}
.dropin-loading {
  color: var(--ink-soft);
  font-size: 0.92rem;
  padding: 0.6rem 0 1rem;
}
#dropIn {
  min-height: 120px;
}

.bank-box {
  margin-top: 1.4rem;
  padding: 1.2rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.68);
}
.bank-box h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
}
.bank-sub { margin: 0 0 1rem; color: var(--ink-soft); font-size: 0.92rem; }
.bank-grid {
  margin: 0;
  display: grid;
  gap: 0.75rem;
}
.bank-grid div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.5rem;
  align-items: start;
}
.bank-grid dt {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 600;
}
.bank-grid dd {
  margin: 0;
  font-weight: 600;
  word-break: break-word;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.copy-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-deep);
  cursor: pointer;
}
.bank-ref {
  margin: 0.9rem 0 0.4rem;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  background: rgba(15, 122, 95, 0.08);
  font-size: 0.9rem;
  font-weight: 600;
}
.bank-methods {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}
.bank-methods .methods-title {
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 0.15rem;
}
.bank-currencies {
  margin: 0.8rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--accent-deep);
  font-weight: 600;
}
@media (max-width: 600px) {
  .bank-grid div { grid-template-columns: 1fr; }
}

.timeline {
  list-style: none;
  margin: 1.2rem 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}
.timeline li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 0.8rem;
  align-items: start;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
}
.timeline .dot {
  width: 12px;
  height: 12px;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: #c5d0ca;
}
.timeline li.done .dot { background: var(--accent); box-shadow: 0 0 0 4px rgba(15,122,95,0.15); }
.timeline .meta { color: var(--ink-soft); font-size: 0.85rem; }

.site-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.site-footer .icp {
  margin-top: 0.5rem;
  font-size: 0.82rem;
}
.site-footer .icp a {
  color: var(--ink-soft);
  text-decoration: none;
}
.site-footer .icp a:hover {
  text-decoration: underline;
}

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

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}