:root {
  --accent: #2d5bd7;
  --accent-dark: #1f45a8;
  --text: #14181f;
  --text-muted: #5c6672;
  --border: #e3e7ec;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --danger: #b42318;
  --ok: #197b47;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* --- header / footer --- */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 600; font-size: 17px; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.nav { display: flex; align-items: center; gap: 20px; }
.nav a { color: var(--text-muted); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--text); }
.site-footer { border-top: 1px solid var(--border); margin-top: 72px; padding: 28px 0; color: var(--text-muted); font-size: 14px; }
.site-footer p { margin: 0; }

/* --- intro --- */
.page-intro { padding: 48px 0 24px; max-width: 640px; }
.page-intro h1 { margin: 0 0 10px; font-size: 30px; letter-spacing: -0.02em; }
.page-intro p { margin: 0; color: var(--text-muted); }

h1, h2 { letter-spacing: -0.01em; }

/* --- filters --- */
.filters { display: flex; gap: 10px; align-items: center; margin: 0 0 28px; flex-wrap: wrap; }
.input {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 9px 12px; min-width: 0;
}
.input:focus { outline: 2px solid rgba(45, 91, 215, 0.25); border-color: var(--accent); }
.filters .input[type="search"] { flex: 1 1 260px; }
.select { background: var(--bg); }
.link-reset { color: var(--text-muted); font-size: 14px; }

/* --- buttons --- */
.btn {
  display: inline-block; font: inherit; font-size: 15px; font-weight: 500; text-align: center;
  border-radius: var(--radius); border: 1px solid transparent; padding: 9px 16px;
  text-decoration: none; cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: var(--bg); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-soft); }
.btn-block { display: block; width: 100%; }
.btn-link { background: none; border: none; color: var(--accent); padding: 0; font-size: 14px; cursor: pointer; }
.btn-link.danger { color: var(--danger); }
.btn:disabled { opacity: 0.6; cursor: default; }

/* --- catalog grid --- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
  display: flex; flex-direction: column; gap: 12px; background: var(--bg);
}
.card-title { margin: 0; font-size: 17px; line-height: 1.35; }
.card-title a { color: var(--text); text-decoration: none; }
.card-title a:hover { color: var(--accent); }
.card-desc { margin: 0; color: var(--text-muted); font-size: 14px; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 0; font-size: 13px; }
.meta div { display: flex; flex-direction: column; }
.meta dt { color: var(--text-muted); }
.meta dd { margin: 0; }
.card-footer { margin-top: auto; padding-top: 6px; display: flex; align-items: center; justify-content: space-between; }
.price { font-weight: 600; }
.price-lg { font-size: 26px; }
.empty { color: var(--text-muted); padding: 32px 0; }

/* --- product page --- */
.breadcrumbs { padding: 22px 0 0; font-size: 14px; color: var(--text-muted); }
.breadcrumbs a { color: var(--text-muted); }
.product-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; padding-top: 12px; }
.product-main h1 { font-size: 27px; margin: 8px 0 8px; }
.lead { color: var(--text-muted); margin: 0 0 8px; }
.block { margin-top: 32px; }
.block h2 { font-size: 17px; margin: 0 0 10px; }
.prose { white-space: pre-wrap; }
.preview {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; overflow-x: auto; font-size: 13px; margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.buy-box { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: grid; gap: 12px; }
.hint { color: var(--text-muted); font-size: 13px; margin: 0; }
.spec { margin: 24px 0 0; display: grid; gap: 10px; font-size: 14px; }
.spec div { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.spec dt { color: var(--text-muted); }
.spec dd { margin: 0; text-align: right; }

/* --- checkout --- */
.checkout-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; padding-top: 8px; }
.checkout-form { display: grid; gap: 16px; align-content: start; }
.field { display: grid; gap: 6px; font-size: 14px; }
.field > span, .field-label { color: var(--text-muted); }
.field em { font-style: normal; color: var(--text-muted); font-size: 12px; }
.order-summary { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.order-summary h2 { font-size: 16px; margin: 0; }
.order-summary .spec { margin-top: 12px; }
.badge { display: inline-block; border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; font-size: 13px; }
.provider-row { display: flex; gap: 8px; flex-wrap: wrap; }
.error { color: var(--danger); font-size: 14px; }
.error-list { color: var(--danger); font-size: 14px; padding-left: 20px; }

/* --- status / download pages --- */
.status-page { max-width: 620px; padding: 48px 0 0; }
.status-page h1 { font-size: 25px; margin: 0 0 10px; }
.status-page .spec { margin-bottom: 24px; }

/* --- admin --- */
body.admin { background: var(--bg-soft); }
body.admin main { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); margin: 28px auto; padding: 28px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.admin-head h1 { font-size: 21px; margin: 0; }
.login-card { max-width: 360px; margin: 24px auto; display: grid; gap: 16px; }
.login-card form { display: grid; gap: 14px; }
.inline-form { display: inline; }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { color: var(--text-muted); font-weight: 500; white-space: nowrap; }
.table tbody tr:hover { background: var(--bg-soft); }
.row-actions { display: flex; gap: 12px; white-space: nowrap; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.small { font-size: 12px; color: var(--text-muted); }

.status { display: inline-block; border-radius: 999px; padding: 2px 10px; font-size: 12px; border: 1px solid var(--border); }
.status-published, .status-paid { color: var(--ok); border-color: rgba(25, 123, 71, 0.35); }
.status-draft, .status-pending { color: var(--text-muted); }
.status-failed, .status-expired { color: var(--danger); border-color: rgba(180, 35, 24, 0.35); }

.admin-form { display: grid; gap: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .span-2 { grid-column: span 2; }
.form-actions { display: flex; gap: 10px; }
textarea.input { resize: vertical; }

@media (max-width: 860px) {
  .product-layout, .checkout-layout, .form-grid { grid-template-columns: minmax(0, 1fr); }
  .form-grid .span-2 { grid-column: span 1; }
  .table { display: block; overflow-x: auto; }
}

/* --- coverage strip --- */
.coverage-strip { display: flex; flex-wrap: wrap; gap: 16px; margin: 0 0 28px; }
.coverage-item {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px;
  display: grid; gap: 2px; font-size: 14px; min-width: 260px;
}
.coverage-label { text-transform: uppercase; letter-spacing: 0.04em; font-size: 12px; color: var(--text-muted); }

/* --- access page --- */
.access-page { padding: 32px 0 0; max-width: 860px; }
.access-page h1 { font-size: 25px; margin: 0 0 8px; }
.notice {
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  background: var(--bg-soft); border-radius: var(--radius); padding: 12px 16px; margin: 16px 0;
  font-size: 14px;
}
.notice.warn { border-left-color: var(--danger); }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 5px;
}