/* Shared base, layouts and components. Applies only to pages rendered with a layout (body.ui).
   Legacy class names are listed beside the new ones as temporary aliases (roadmap phase 5 removes them). */

/* ---------- Base ---------- */
.ui, .ui *, .ui *::before, .ui *::after { box-sizing: border-box; }
.ui { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--color-bg); color: var(--color-text); font-family: var(--font-sans); font-size: var(--text-md); line-height: var(--leading); -webkit-text-size-adjust: 100%; }
.ui h1, .ui h2, .ui h3, .ui h4 { line-height: var(--leading-tight); margin: 0 0 var(--space-3); overflow-wrap: anywhere; }
.ui h1 { font-size: var(--text-2xl); letter-spacing: -.01em; }
.ui h2 { font-size: var(--text-lg); }
.ui h3 { font-size: var(--text-md); }
.ui p { margin: 0 0 var(--space-3); }
.ui a { color: var(--color-primary); text-underline-offset: 3px; }
.ui a:hover { color: var(--color-primary-hover); }
.ui code { font-family: var(--font-mono); font-size: .9em; background: var(--color-primary-soft); color: var(--color-primary-ink); border-radius: 4px; padding: 1px 5px; overflow-wrap: anywhere; }
.ui [hidden] { display: none !important; }
.ui :focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.ui details > summary { cursor: pointer; font-weight: 650; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: var(--space-4); top: -60px; z-index: 10; background: var(--color-surface); padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); box-shadow: var(--shadow-md); }
.skip-link:focus { top: var(--space-3); }

/* ---------- Brand ---------- */
.brand-link { display: inline-flex; align-items: center; gap: 10px; color: var(--color-text) !important; text-decoration: none; font-weight: 750; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--color-primary); color: #fff; font-size: .8rem; letter-spacing: -.03em; }
.brand-sub { display: block; font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 500; letter-spacing: .06em; }

/* ---------- Customer layout ---------- */
.ui-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.ui-header-inner { width: min(var(--content), 100%); margin: 0 auto; padding: var(--space-3) var(--space-6); display: flex; align-items: center; gap: var(--space-6); }
.ui-header form { margin: 0 0 0 auto; }
.ui-nav { display: flex; gap: var(--space-1); overflow-x: auto; scrollbar-width: none; }
.ui-nav a { display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 var(--space-3); border-radius: var(--radius-sm); color: var(--color-text-muted); text-decoration: none; font-weight: 600; white-space: nowrap; }
.ui-nav a:hover { background: var(--color-surface-muted); color: var(--color-text); }
.ui-nav a[aria-current="page"] { color: var(--color-primary-ink); background: var(--color-primary-soft); }
.ui-main { flex: 1; width: min(var(--content), 100%); margin: 0 auto; padding: var(--space-7) var(--space-6) var(--space-8); }
.ui-main.is-narrow { width: min(920px, 100%); }
.ui-footer { border-top: 1px solid var(--color-border); color: var(--color-text-subtle); font-size: var(--text-xs); }
.ui-footer-inner { width: min(var(--content), 100%); margin: 0 auto; padding: var(--space-5) var(--space-6); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); }
.ui-footer nav { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.ui-footer a { color: var(--color-text-muted); }
@media (max-width: 760px) {
  .ui-header-inner { flex-wrap: wrap; gap: var(--space-2) var(--space-4); padding: var(--space-3) var(--space-4) 0; }
  .ui-nav { order: 3; flex-basis: 100%; margin: 0 calc(-1 * var(--space-4)); padding: 0 var(--space-3) var(--space-1); }
  .ui-main { padding: var(--space-5) var(--space-4) var(--space-7); }
  .ui-footer-inner { padding: var(--space-4); flex-direction: column; }
}

/* ---------- Public layout (login, register, activation) ---------- */
.ui-public .ui-main { width: min(var(--content-narrow), 100%); }
.ui-public .ui-header-inner { width: min(var(--content-narrow), 100%); }

/* ---------- Admin layout ---------- */
.ui-admin { flex-direction: row; }
.ui-sidebar { position: sticky; top: 0; align-self: flex-start; width: 240px; min-height: 100vh; flex: 0 0 240px; background: #123d39; color: #e8f2ed; padding: var(--space-7) var(--space-5); display: flex; flex-direction: column; gap: var(--space-5); }
.ui-sidebar .brand-link { color: #fff !important; }
.ui-sidebar .brand-sub { color: #a5ccba; }
.ui-sidebar nav { display: grid; gap: 2px; }
.ui-sidebar nav a { color: #d2e4d9; text-decoration: none; padding: 10px 12px; border-radius: var(--radius-sm); }
.ui-sidebar nav a:hover, .ui-sidebar nav a:focus-visible { background: #275750; color: #fff; }
.ui-sidebar form { margin-top: auto; }
.ui-sidebar .btn { width: 100%; color: #e8f2ed; background: transparent; border-color: #6b968a; }
.ui-admin .ui-main { min-width: 0; }
/* In-app pages (shop owner and admin) use the full window width; public pages keep their reading width. */
.ui-customer .ui-main, .ui-customer .ui-main.is-narrow, .ui-admin .ui-main { width: 100%; }
.ui-customer .ui-header-inner, .ui-customer .ui-footer-inner { width: 100%; }
@media (max-width: 760px) {
  .ui-admin { flex-direction: column; }
  .ui-sidebar { position: static; width: 100%; max-width: 100vw; min-height: 0; flex-basis: auto; padding: var(--space-4); gap: var(--space-3); flex-direction: row; flex-wrap: wrap; align-items: center; }
  .ui-sidebar nav { order: 3; flex-basis: 100%; min-width: 0; display: flex; overflow-x: auto; }
  .ui-sidebar > .brand-link { min-width: 0; }
  .ui-sidebar nav a { white-space: nowrap; }
  .ui-sidebar form { margin: 0 0 0 auto; }
  .ui-sidebar .btn { width: auto; }
}

/* ---------- Page header ---------- */
.page-head { margin-bottom: var(--space-6); }
.page-head .lede, .ui .note { color: var(--color-text-muted); }
.eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); margin: 0 0 var(--space-2); font-size: var(--text-xs); font-weight: 750; letter-spacing: .06em; color: var(--color-primary-ink); }
.page-title-row, .product-title { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); }
.page-title-row h1, .product-title h1 { margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-4); font-size: var(--text-sm); text-decoration: none; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: var(--tap); padding: 10px 18px; border: 1px solid transparent; border-radius: var(--radius-sm); font: inherit; font-size: var(--text-sm); font-weight: 650; line-height: 1.4; text-align: center; text-decoration: none; cursor: pointer; transition: background-color .15s, border-color .15s; }
.btn--primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff !important; }
.btn--primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn--secondary { background: var(--color-surface); border-color: var(--color-border-strong); color: var(--color-primary-ink) !important; }
.btn--secondary:hover { background: var(--color-surface-muted); }
.btn--quiet { background: transparent; border-color: var(--color-border); color: var(--color-text-muted) !important; min-height: 38px; padding: 7px 12px; font-size: var(--text-xs); }
.btn--danger { background: var(--color-danger-bg); border-color: var(--color-danger-border); color: var(--color-danger) !important; }
.btn--danger:hover { background: #ffe9e5; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.btn-row form { margin: 0; }
@media (max-width: 600px) { .btn-row--stack > .btn, .btn-row--stack > form, .btn-row--stack > form .btn { width: 100%; } }

/* ---------- Cards ---------- */
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow-md); min-width: 0; margin: 0 0 var(--space-5); }
.card--muted { background: var(--color-surface-muted); box-shadow: none; }
.card > :last-child { margin-bottom: 0; }
@media (max-width: 600px) { .card { padding: var(--space-5) var(--space-4); border-radius: var(--radius-md); } }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: var(--radius-pill); background: var(--color-primary-soft); color: var(--color-primary-ink); font-size: var(--text-xs); font-weight: 700; line-height: 1.6; white-space: nowrap; }
.badge--neutral { background: #eef3f0; color: var(--color-text-muted); }
.badge--warning { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge--danger { background: var(--color-danger-bg); color: var(--color-danger-text); }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; display: none; }
.badge--dot::before { display: inline-block; }

/* ---------- Alerts ---------- */
.alert { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin: 0 0 var(--space-5); font-size: var(--text-sm); }
.alert--success { background: var(--color-success-bg); border-color: var(--color-success-border); color: var(--color-success-text); }
.alert--warning { background: var(--color-warning-bg); border-color: var(--color-warning-border); color: var(--color-warning-text); }
.alert--danger { background: var(--color-danger-bg); border-color: var(--color-danger-border); color: var(--color-danger-text); }
.alert--info { background: var(--color-info-bg); border-color: var(--color-info-border); color: var(--color-info-text); }

/* ---------- Forms ---------- */
.form { display: grid; gap: var(--space-4); }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: var(--text-sm); min-width: 0; }
.ui input:not([type=checkbox]):not([type=radio]):not([type=color]):not([type=hidden]), .ui select, .ui textarea { width: 100%; min-width: 0; min-height: var(--tap); padding: 10px 12px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); font: inherit; }
.ui input[type=color] { width: 100%; height: var(--tap); padding: 4px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-surface); cursor: pointer; }
.ui input[type=checkbox], .ui input[type=radio] { width: 18px; height: 18px; accent-color: var(--color-primary); }
.ui input:focus-visible, .ui select:focus-visible, .ui textarea:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 1px; border-color: var(--color-primary); }
.field-hint, .form small { font-weight: 400; color: var(--color-text-muted); font-size: var(--text-xs); }
.field-error { color: var(--color-danger); font-weight: 600; font-size: var(--text-xs); }

/* ---------- Stepper ---------- */
.stepper { list-style: none; margin: 0 0 var(--space-6); padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: var(--space-2); counter-reset: step; }
.stepper li { display: flex; align-items: center; gap: var(--space-2); padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: #eef3f0; color: var(--color-text-subtle); font-size: var(--text-sm); min-width: 0; }
.step-number { flex: 0 0 24px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: #dce5df; color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 750; }
.stepper .is-complete { background: var(--color-success-bg); border-color: var(--color-success-border); color: var(--color-success-text); }
.stepper .is-complete .step-number { background: #408663; color: #fff; }
.stepper .is-current { background: var(--color-surface); border-color: var(--color-primary); color: var(--color-primary-ink); font-weight: 700; }
.stepper .is-current .step-number { background: var(--color-primary); color: #fff; }
@media (max-width: 600px) { .stepper li { flex-direction: column; gap: 4px; padding: 8px 4px; text-align: center; font-size: var(--text-xs); } }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
.ui table { width: 100%; border-collapse: collapse; }
.ui th, .ui td { text-align: left; padding: 12px 10px; border-bottom: 1px solid #e8efeb; font-size: var(--text-sm); vertical-align: top; }
.ui th { color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 650; }
.ui td small { display: block; color: var(--color-text-subtle); font-size: var(--text-xs); margin-top: 3px; overflow-wrap: anywhere; }

/* ---------- Empty state, code block ---------- */
.empty { text-align: left; color: var(--color-text-muted); }
.code { display: block; width: 100%; min-height: 120px; padding: var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-surface-muted); color: #193e2d; font: var(--text-sm)/1.7 var(--font-mono); resize: vertical; overflow-wrap: anywhere; }

/* ---------- Attention banner ---------- */
.attention { margin: 0 0 var(--space-6); }
.attention-title { font-size: var(--text-sm); margin: 0 0 var(--space-2); }
.attention-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.attention-item { display: flex; align-items: flex-start; gap: var(--space-3); border: 1px solid; border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); }
.attention-item.is-danger { background: var(--color-danger-bg); border-color: var(--color-danger-border); color: var(--color-danger-text); }
.attention-item.is-warning { background: var(--color-warning-bg); border-color: var(--color-warning-border); color: var(--color-warning-text); }
.attention-icon { flex: 0 0 24px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: var(--text-xs); color: #fff; }
.attention-item.is-danger .attention-icon { background: #b3402f; }
.attention-item.is-warning .attention-icon { background: #9a6a12; }
.attention-body { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.attention-body p { margin: 2px 0 0; font-size: var(--text-sm); }
.attention-action { flex: 0 0 auto; align-self: center; display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 14px; border: 1px solid currentColor; border-radius: var(--radius-sm); color: inherit !important; font-weight: 700; text-decoration: none; }
@media (max-width: 600px) { .attention-item { flex-wrap: wrap; } .attention-action { width: 100%; justify-content: center; } }
.badge + h2, .badge + h3 { margin-top: var(--space-3); }
.password-field { position: relative; display: block; }
.password-field input { padding-right: 76px !important; }
.password-toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); min-height: 34px; padding: 0 12px; border: 1px solid var(--color-border); border-radius: 6px; background: var(--color-surface-muted); color: var(--color-text-muted); font: inherit; font-size: var(--text-xs); font-weight: 650; cursor: pointer; }
/* WCAG 2.2 target size (2.5.8): text links used as actions get at least 24px height. */
.card-links a, .ui td a, .back-link, .ui-footer a { display: inline-flex; align-items: center; min-height: 24px; }
.ui td a { min-height: 32px; }
/* Platform Admin viewing a shop: shared so it is styled on customer pages too. */
.admin-viewing { background: #123d39; color: #e8f2ed; text-align: center; padding: 8px var(--space-4); font-size: var(--text-sm); overflow-wrap: anywhere; }
.admin-viewing a { color: #fff !important; font-weight: 700; }
.field-error, .form small.field-error { display: block; color: var(--color-danger); font-size: var(--text-xs); font-weight: 500; min-height: 0; }
.field-error:empty { display: none; }
input[aria-invalid="true"] { border-color: var(--color-danger) !important; }
.form-status:empty { display: none; }
.activation-steps { margin: var(--space-2) 0 var(--space-4); padding-left: 1.25rem; display: grid; gap: 4px; color: var(--color-text-muted); }
.btn.is-loading { cursor: progress; opacity: .75; }
.btn.is-loading::before { content: ''; width: 1em; height: 1em; margin-right: .5em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; display: inline-block; vertical-align: -0.15em; animation: btn-spin .8s linear infinite; }
@keyframes btn-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .btn.is-loading::before { animation: none; } }