/* S Fasteners — Superbia brand kit (docs/assets/branding-register.md + design-system.md) */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@400;500;600&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Brand register palette */
  --s-navy: #1a1f3d;
  --s-navy-mid: #252b52;
  --s-yellow: #f5c800;
  --s-supblue: #29abe2;
  --s-chrome: #b8c4cc;
  --s-white: #ffffff;
  --s-grey: #f2f2f2;
  --s-charcoal: #444444;
  --s-muted: #6e7b87;
  --s-text: var(--s-charcoal);
  --in-stock: #16a34a;
  --low-stock: #d97706;
  --out-stock: #dc2626;
  --sf-radius: 10px;
  --sf-radius-sm: 6px;
  --sf-shadow: 0 4px 24px rgba(26, 31, 61, 0.09);
  --sf-shadow-sm: 0 2px 12px rgba(26, 31, 61, 0.06);
  --sf-header-height: clamp(4rem, 12vw, 5rem);
  --sf-font-display: 'Montserrat', system-ui, sans-serif;
  --sf-font-body: 'Open Sans', system-ui, sans-serif;
  --sf-font-ui: 'Inter', system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body.sf-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sf-font-body);
  font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);
  line-height: 1.55;
  color: var(--s-text);
  background: var(--s-grey);
  -webkit-font-smoothing: antialiased;
}

.sf-skip {
  position: absolute;
  left: -9999px;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--s-yellow);
  color: var(--s-navy);
  font-family: var(--sf-font-ui);
  font-weight: 700;
}

.sf-skip:focus {
  left: 1rem;
  top: 1rem;
}

/* --- Public shell --- */

.sf-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.sf-container {
  width: 100%;
  max-width: min(72rem, 100% - clamp(1rem, 4vw, 2.5rem));
  margin-inline: auto;
  padding-inline: clamp(0.75rem, 3vw, 1.25rem);
}

/* Light storefront header — division logo reads on white (brand kit) */
.sf-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--sf-header-height);
  background: var(--s-white);
  color: var(--s-charcoal);
  border-bottom: 1px solid rgba(26, 31, 61, 0.1);
  box-shadow: var(--sf-shadow-sm);
}

.sf-header::after {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--s-yellow) 0%, rgba(245, 200, 0, 0.65) 50%, var(--s-yellow) 100%);
}

.sf-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--sf-header-height);
  flex-wrap: wrap;
}

.sf-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.sf-logo img {
  height: clamp(2.35rem, 6vw, 3.25rem);
  width: auto;
  max-width: min(320px, 72vw);
  object-fit: contain;
}

.sf-logo__tag {
  font-family: var(--sf-font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--s-muted);
  border-left: 2px solid var(--s-yellow);
  padding-left: 0.65rem;
  margin-left: 0.25rem;
}

.sf-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.sf-nav a {
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--s-navy);
  text-decoration: none;
  padding: 0.45rem 0.75rem;
  border-radius: var(--sf-radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
}

.sf-nav a:hover,
.sf-nav a:focus-visible {
  background: rgba(245, 200, 0, 0.18);
  color: var(--s-navy);
}

.sf-nav a.sf-nav__active {
  background: rgba(245, 200, 0, 0.35);
  color: var(--s-navy);
}

.sf-main {
  flex: 1;
  width: 100%;
  padding-block: clamp(1.25rem, 4vw, 2rem);
}

.sf-footer {
  background: var(--s-navy);
  color: rgba(255, 255, 255, 0.9);
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: auto;
  border-top: 3px solid var(--s-yellow);
}

.sf-footer__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .sf-footer__grid {
    grid-template-columns: 1fr 1fr auto;
    align-items: start;
  }
}

.sf-footer a {
  color: var(--s-supblue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sf-footer a:hover {
  color: var(--s-yellow);
}

.sf-footer__logo img {
  height: clamp(2.25rem, 5vw, 3rem);
  width: auto;
  max-width: min(300px, 85vw);
  object-fit: contain;
}

.sf-muted {
  color: var(--s-chrome);
  font-size: 0.875rem;
}

.sf-footer .sf-muted {
  color: rgba(184, 196, 204, 0.92);
}

.sf-main .sf-product-card a,
.sf-main a.text-reset {
  color: inherit;
}

.sf-main nav[aria-label='Breadcrumb'] a {
  color: var(--s-supblue);
  text-underline-offset: 2px;
}

.sf-main nav[aria-label='Breadcrumb'] a:hover {
  color: var(--s-navy);
}

/* --- Typography --- */

.sf-display {
  font-family: var(--sf-font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--s-navy);
}

h1.sf-display {
  font-size: clamp(1.75rem, 4vw + 0.5rem, 2.75rem);
}

h2.sf-display {
  font-size: clamp(1.35rem, 2.5vw + 0.5rem, 2rem);
}

/* --- Buttons --- */

.btn--primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--sf-font-ui);
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: var(--sf-radius-sm);
  background: var(--s-yellow);
  color: var(--s-navy);
  cursor: pointer;
  text-decoration: none;
  transition: filter 0.15s ease, transform 0.1s ease;
}

.btn--primary:hover {
  filter: brightness(1.05);
}

.btn--primary:focus-visible {
  outline: 2px solid var(--s-navy);
  outline-offset: 3px;
}

.btn--outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.55rem 1rem;
  border: 2px solid var(--s-navy);
  border-radius: var(--sf-radius-sm);
  background: transparent;
  color: var(--s-navy);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn--outline:hover {
  background: var(--s-navy);
  color: var(--s-white);
}

.btn--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0.5rem;
  border: 1px solid rgba(26, 31, 61, 0.22);
  border-radius: var(--sf-radius-sm);
  background: transparent;
  color: var(--s-navy);
  cursor: pointer;
  text-decoration: none;
}

.btn--ghost:hover {
  background: rgba(245, 200, 0, 0.2);
  border-color: rgba(26, 31, 61, 0.35);
}

/* --- Cards & panels --- */

.sf-card {
  background: var(--s-white);
  border-radius: var(--sf-radius);
  box-shadow: var(--sf-shadow);
  padding: clamp(1rem, 3vw, 1.5rem);
}

/* --- Stock badges --- */

.badge--stock-in {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--sf-font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(22, 163, 74, 0.12);
  color: var(--in-stock);
}

.badge--stock-low {
  display: inline-flex;
  align-items: center;
  font-family: var(--sf-font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.15);
  color: var(--low-stock);
}

.badge--stock-out {
  display: inline-flex;
  align-items: center;
  font-family: var(--sf-font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(220, 38, 38, 0.12);
  color: var(--out-stock);
}

/* --- Product cards (catalogue) --- */

.sf-product-card {
  transition: box-shadow 0.15s ease;
}

.sf-product-card:hover {
  box-shadow: var(--sf-shadow);
}

.sf-product-card__media {
  border-radius: var(--sf-radius) var(--sf-radius) 0 0;
  overflow: hidden;
}

.sf-product-card__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.75rem;
}

/* --- Admin shell --- */

.sf-admin {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

@media (min-width: 992px) {
  .sf-admin {
    flex-direction: row;
  }
}

.sf-admin__sidebar {
  flex-shrink: 0;
  background: var(--s-navy-mid);
  color: var(--s-white);
  padding: 1rem clamp(0.75rem, 2vw, 1.25rem);
}

@media (min-width: 992px) {
  .sf-admin__sidebar {
    width: 260px;
    min-height: 100vh;
    position: sticky;
    top: 0;
    align-self: flex-start;
  }
}

.sf-admin__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sf-admin__brand img {
  height: clamp(1.75rem, 4vw, 2.25rem);
  width: auto;
  max-width: 180px;
  object-fit: contain;
}

.sf-admin__brand-tag {
  font-family: var(--sf-font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  align-self: center;
  margin-left: 0.35rem;
}

.sf-admin__nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.sf-admin__nav a {
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  border-radius: var(--sf-radius-sm);
  border-left: 3px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.sf-admin__nav a:hover,
.sf-admin__nav a:focus-visible {
  background: rgba(255, 255, 255, 0.06);
}

.sf-admin__nav a.sf-admin__nav--active {
  background: rgba(245, 200, 0, 0.12);
  border-left-color: var(--s-yellow);
  color: var(--s-yellow);
}

.sf-admin__main {
  flex: 1;
  min-width: 0;
  background: var(--s-grey);
  padding: clamp(1rem, 3vw, 1.75rem);
}

.sf-admin__title {
  font-family: var(--sf-font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2vw + 0.5rem, 1.75rem);
  color: var(--s-navy);
  margin: 0 0 1rem;
}

.sf-table-wrap {
  overflow-x: auto;
  border-radius: var(--sf-radius);
  box-shadow: var(--sf-shadow-sm);
  background: var(--s-white);
}

table.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.admin-table th,
table.admin-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid rgba(26, 31, 61, 0.08);
}

table.admin-table th {
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--s-muted);
  background: rgba(26, 31, 61, 0.04);
}

table.admin-table tbody tr:hover {
  background: rgba(245, 200, 0, 0.06);
}

/* --- Bootstrap coexistence: neutralise default primary where used --- */

.sf-body .btn-primary {
  background: var(--s-yellow);
  border-color: var(--s-yellow);
  color: var(--s-navy);
  font-family: var(--sf-font-ui);
  font-weight: 700;
}

.sf-body .btn-primary:hover {
  background: #e6bc00;
  border-color: #e6bc00;
  color: var(--s-navy);
}

/* --- Category tiles & icons --- */

.sf-cat-tile {
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  border: 1px solid rgba(26, 31, 61, 0.06);
}

.sf-cat-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(26, 31, 61, 0.12);
}

.sf-cat-tile:focus-visible {
  outline: 2px solid var(--s-supblue);
  outline-offset: 3px;
}

.sf-cat-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.75rem;
  height: 3.75rem;
  border-radius: 14px;
  background: linear-gradient(
    145deg,
    rgba(245, 200, 0, 0.35),
    rgba(41, 171, 226, 0.14)
  );
  color: var(--s-navy);
}

.sf-cat-icon-wrap--compact {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 12px;
}

.sf-cat-icon svg {
  width: 2rem;
  height: 2rem;
  display: block;
}

.sf-cat-icon-wrap--compact .sf-cat-icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.sf-cat-tile__title {
  font-size: 1.15rem;
}

.sf-cat-tile__hint {
  opacity: 0.85;
}

.sf-section-hint {
  font-family: var(--sf-font-ui);
}

/* --- Marketing / trust --- */

.sf-crosslinks {
  border-left: 4px solid var(--s-yellow);
  background: linear-gradient(90deg, rgba(245, 200, 0, 0.08), transparent);
}

.sf-trust-card {
  border-left: 4px solid rgba(245, 200, 0, 0.85);
}

.btn--primary.small,
.btn--outline.small {
  font-size: 0.875rem;
  padding: 0.45rem 0.95rem;
}

/* --- Content pages (About, Privacy, Policy, Help) --- */

.sf-content-page {
  max-width: min(52rem, 100%);
  margin-inline: auto;
}

.sf-prose h2 + p,
.sf-prose h2 + ul {
  margin-top: 0.5rem;
}

.sf-prose p,
.sf-prose li {
  max-width: 46rem;
}

.sf-prose ul {
  padding-left: 1.25rem;
}

.sf-page-hero {
  position: relative;
  overflow: hidden;
  min-height: clamp(280px, 48vw, 460px);
}

.sf-page-hero--image .sf-page-hero__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sf-page-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(26, 31, 61, 0.93) 0%,
    rgba(26, 31, 61, 0.55) 55%,
    rgba(26, 31, 61, 0.35) 100%
  );
}

.sf-page-hero__inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(2.25rem, 7vw, 4rem);
  text-align: center;
  color: var(--s-white);
}

.sf-page-hero__eyebrow {
  font-family: var(--sf-font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--s-yellow);
  margin-bottom: 0.35rem;
}

.sf-page-hero__title {
  font-family: var(--sf-font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 4vw + 0.5rem, 2.5rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  color: var(--s-white);
}

.sf-page-hero__lead {
  margin: 0 auto;
  max-width: 38rem;
  font-size: clamp(1rem, 2vw, 1.125rem);
  opacity: 0.95;
}

.sf-about-brand-lockup {
  max-width: min(280px, 82vw);
  height: auto;
  margin-inline: auto;
  display: block;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

/* --- How-to steps --- */

.sf-steps__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.sf-steps__num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  background: var(--s-yellow);
  color: var(--s-navy);
  font-family: var(--sf-font-display);
  font-weight: 800;
  font-size: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* --- FAQ accordion (Bootstrap skin) --- */

.sf-accordion .accordion-item {
  border: 1px solid rgba(26, 31, 61, 0.1);
  border-radius: var(--sf-radius-sm);
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.sf-accordion .accordion-button {
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--s-white);
  color: var(--s-navy);
}

.sf-accordion .accordion-button:not(.collapsed) {
  background: rgba(245, 200, 0, 0.22);
  color: var(--s-navy);
  box-shadow: none;
}

.sf-accordion .accordion-button:focus {
  box-shadow: 0 0 0 2px rgba(41, 171, 226, 0.35);
}

.sf-accordion .accordion-body {
  font-size: 0.9375rem;
  color: var(--s-charcoal);
}

.sf-footer-links a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
}

.sf-footer-links a:hover {
  color: var(--s-yellow);
  text-decoration: underline;
}

/* --- Cart (storefront JS + API cookie on API origin) --- */

.sf-cart-link {
  position: relative;
  font-family: var(--sf-font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--s-navy);
  text-decoration: none;
  padding: 0.45rem 0.75rem;
  border-radius: var(--sf-radius-sm);
}

.sf-cart-link:hover,
.sf-cart-link:focus-visible {
  background: rgba(245, 200, 0, 0.18);
  color: var(--s-navy);
}

.sf-cart-badge:empty {
  display: none;
}

.sf-cart-badge:not(:empty) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  margin-left: 0.25rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--s-navy);
  color: var(--s-yellow);
  vertical-align: middle;
}

.sf-cart-table thead th {
  font-family: var(--sf-font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--s-muted);
}

.sf-quote-form .form-label {
  color: var(--s-navy);
}

button.sf-btn-success-flash,
.btn--primary.sf-btn-success-flash {
  animation: sf-success-pulse 0.6s ease;
}

@keyframes sf-success-pulse {
  0% {
    filter: brightness(1);
  }
  40% {
    filter: brightness(1.15);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.35);
  }
  100% {
    filter: brightness(1);
  }
}