/* PayChase — dark theme. Colors stay on the original palette. */
:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --border: #2a2e3a;
  --text: #e8eaed;
  --muted: #8b90a0;
  --accent: #6d5efc;
  --accent-hover: #5b4de0;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--accent);
  color: white;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  z-index: 10;
}
.skip-link:focus { top: 0.75rem; color: white; }

.navbar {
  background: rgba(26, 29, 39, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
.nav-inner, .footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}
.navbar-brand {
  color: var(--text);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.4px;
}
.navbar-brand span { color: var(--accent); }
.navbar-brand:hover { color: var(--text); }
.nav-actions, .footer-links, .button-row, .inline-form {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.center-row { justify-content: center; }
.stack-top { margin-top: 1.25rem; }
.nav-actions a { color: var(--text); font-weight: 500; }
.nav-actions form { margin: 0; }

.btn-primary {
  background: var(--accent);
  border: none;
  border-radius: 10px;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  color: white;
}
.btn-primary:hover, .btn-primary:focus { background: var(--accent-hover); color: white; }
.btn-outline-primary { color: var(--accent); border-color: var(--accent); border-radius: 10px; }
.btn-outline-primary:hover { background: var(--accent); color: white; }
.btn-outline-secondary {
  color: var(--text);
  border-color: var(--border);
  border-radius: 10px;
  background: transparent;
}
.btn-outline-secondary:hover { background: var(--border); color: white; }
.btn-danger {
  background: transparent;
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.45);
  border-radius: 10px;
  font-weight: 600;
  padding: 0.55rem 1rem;
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.15); color: white; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.65; }

.hero {
  background: radial-gradient(ellipse at top, rgba(109, 94, 252, 0.16) 0%, transparent 62%);
  padding: 4.5rem 1rem 3rem;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -1.2px;
  line-height: 1.1;
  margin: 0 0 1rem;
}
.hero p.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 1.75rem;
}
.section { padding: 1rem 0 3.5rem; }
.section h2 { font-weight: 700; letter-spacing: -0.4px; margin-bottom: 0.4rem; }
.muted { color: var(--muted); }
.narrow { max-width: 720px; }

.card, .stat-card, .feature, .price-card, .auth-card, .panel, .invoice-row, .pay-card, .example-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}
.feature-grid, .price-grid, .stat-grid, .settings-grid {
  display: grid;
  gap: 1rem;
}
.feature-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 1.25rem; }
.feature, .price-card, .panel { padding: 1.35rem; }
.feature h3, .price-card h3, .panel h2 { margin-top: 0; font-size: 1.15rem; }
.feature p, .price-card p { color: var(--muted); }
.steps { margin: 0; padding-left: 1.2rem; color: var(--muted); }
.steps li { margin: 0.45rem 0; }
.steps strong { color: var(--text); }

.price-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); margin-top: 1.25rem; }
.amount { font-size: 1.8rem; font-weight: 800; margin: 0.4rem 0; }
.price-card ul { padding-left: 1.1rem; color: var(--muted); margin-bottom: 1rem; }
.todo-price {
  color: var(--warning);
  font-size: 1rem;
  font-weight: 700;
}

.example-card { padding: 1.25rem; margin-top: 1rem; }
.example-label {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warning);
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.example-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
}
.example-row:last-child { border-bottom: 0; }

.stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stat-card { padding: 1.1rem 1rem; }
.stat-card h3 { font-size: clamp(1.35rem, 3vw, 1.8rem); margin: 0; font-weight: 700; }
.stat-card .label { color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }
.stat-card.warning h3 { color: var(--warning); }
.stat-card.success h3 { color: var(--success); }

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 1rem;
}
.page-head h1 { margin: 0; font-size: 1.8rem; font-weight: 800; letter-spacing: -0.4px; }

.invoice-list { display: grid; gap: 0.75rem; }
.invoice-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem 1rem;
  padding: 1rem 1.1rem;
  align-items: center;
}
.invoice-row a.number { color: var(--text); font-weight: 700; font-size: 1.05rem; }
.invoice-row a.number:hover { color: var(--accent); }
.invoice-meta { color: var(--muted); margin: 0; font-size: 0.92rem; }
.money { font-weight: 700; font-variant-numeric: tabular-nums; }

.status-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.28em 0.7em;
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  width: fit-content;
}
.badge-paid { background: rgba(34, 197, 94, 0.15); color: #86efac; }
.badge-overdue { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }
.badge-due { background: rgba(245, 158, 11, 0.16); color: #fcd34d; }
.badge-open { background: rgba(109, 94, 252, 0.16); color: #c4b5fd; }
.badge-void { background: rgba(139, 144, 160, 0.16); color: var(--muted); }

.empty {
  text-align: center;
  padding: 2.5rem 1.25rem;
}
.empty h2 { margin-top: 0; }
.empty p { color: var(--muted); }

.auth-wrap { display: flex; justify-content: center; padding: 2.5rem 1rem 3rem; }
.auth-card { width: min(460px, 100%); padding: 1.5rem; }
.auth-card h1 { margin: 0 0 0.4rem; font-size: 1.6rem; }
.auth-card .lede { color: var(--muted); margin-bottom: 1.2rem; }

label { display: block; font-weight: 600; margin-bottom: 0.35rem; font-size: 0.92rem; }
.field { margin-bottom: 0.95rem; }
.form-control, .form-select, textarea.form-control {
  background: #12141c;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  width: 100%;
}
.form-control:focus {
  background: #12141c;
  color: var(--text);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(109, 94, 252, 0.2);
  outline: none;
}
.field-error { color: #fca5a5; font-size: 0.85rem; margin: 0.3rem 0 0; }
.help { color: var(--muted); font-size: 0.85rem; margin: 0.35rem 0 0; }

.alert { border-radius: 12px; border: none; margin-bottom: 0.7rem; }
.alert-success { background: rgba(34, 197, 94, 0.12); color: #86efac; }
.alert-danger { background: rgba(239, 68, 68, 0.12); color: #fca5a5; }
.alert-warning { background: rgba(245, 158, 11, 0.12); color: #fcd34d; }
.alert-info { background: rgba(109, 94, 252, 0.16); color: #ddd6fe; }
.flash-stack { padding-top: 1rem; }

.banner {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin: 1rem 0;
  background: #141824;
}
.banner strong { display: block; margin-bottom: 0.2rem; }
.banner p { margin: 0; color: var(--muted); }

.draft-banner {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fcd34d;
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin-bottom: 1.25rem;
}
.prose h1 { font-size: 2rem; letter-spacing: -0.5px; }
.prose h2 { font-size: 1.15rem; margin-top: 1.6rem; }
.prose p, .prose li { color: var(--muted); }
.prose strong { color: var(--text); }

.detail-grid, .settings-grid { grid-template-columns: 1fr; }
.kv { display: grid; grid-template-columns: 8.5rem 1fr; gap: 0.35rem 0.8rem; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.notes { white-space: pre-wrap; color: var(--text); }
.pay-link {
  word-break: break-all;
  font-size: 0.92rem;
  background: #12141c;
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
}

.pay-wrap { display: flex; justify-content: center; padding: 2rem 1rem 3rem; }
.pay-card { width: min(520px, 100%); padding: 1.5rem; }
.pay-card .from { color: var(--muted); margin-bottom: 0.2rem; }
.pay-amount { font-size: clamp(2.2rem, 8vw, 3rem); font-weight: 800; letter-spacing: -1px; margin: 0.2rem 0 0.8rem; }
.pay-state { font-weight: 600; margin: 0.8rem 0; }
.pay-state.paid { color: #86efac; }
.pay-state.void { color: var(--muted); }
.pay-state.pending { color: #fcd34d; }

footer {
  background: #0a0c12;
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 1.25rem 0;
  font-size: 0.9rem;
  margin-top: 2rem;
}
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }

.error-page { text-align: center; padding: 4rem 1rem; }
.error-page h1 { font-size: 2rem; }

@media (min-width: 800px) {
  .stat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .invoice-row {
    grid-template-columns: minmax(0, 1.5fr) 7rem 9rem auto;
  }
  .detail-grid, .settings-grid { grid-template-columns: 1.2fr 0.8fr; align-items: start; }
}

@media (max-width: 640px) {
  .nav-inner { min-height: 64px; }
  .footer-inner { flex-direction: column; align-items: flex-start; padding: 0.5rem 0; }
}