/* Theme Name: ZeroY Starter */

/* ==========================================================================
   Base & Reset
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  margin: 0;
  background-color: var(--page-bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.22;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.15;
}

h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.25;
}

h3 {
  font-size: 23px;
  line-height: 1.35;
  letter-spacing: -0.023em;
}

h4 {
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: -0.015em;
}

p {
  margin: 0 0 1em;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color var(--quick) var(--ease);
}

a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 3px;
}

/* ==========================================================================
   Layout Shell & Grid
   ========================================================================== */
.shell {
  width: calc(100% - var(--gutter) * 2);
  max-width: var(--sheet-width);
  margin-inline: auto;
}

.section {
  padding-block: var(--space-20);
  border-top: 1px solid var(--border-subtle);
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: end;
  margin-bottom: var(--space-12);
}

.section-head h2 {
  max-width: 22ch;
}

.section-head p {
  max-width: 48ch;
  justify-self: end;
}

@media (max-width: 740px) {
  .section {
    padding-block: var(--space-12);
  }
  .section-head {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .section-head p {
    justify-self: start;
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--surface);
  color: var(--brand-primary);
  padding: 8px 16px;
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
  z-index: 999;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  gap: var(--space-8);
}

.identity {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  text-decoration: none;
}

.identity-wordmark {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.identity-divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-subtle);
}

.identity-tagline {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 38ch;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Primary navigation bar */
.site-nav-bar {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav li {
  display: flex;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-2);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--brand-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

/* Dropdown: Books -> audience terms */
.site-nav > li {
  position: relative;
}

.site-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 20;
  display: none;
  flex-direction: column;
  gap: 2px;
  min-width: 168px;
  margin: 0;
  padding: var(--space-2);
  list-style: none;
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.site-nav li:hover > .sub-menu,
.site-nav li:focus-within > .sub-menu {
  display: flex;
}

.site-nav .sub-menu a {
  min-height: 40px;
  padding: 8px 12px;
  font-size: 14px;
  border-radius: var(--radius-control);
}

.site-nav .sub-menu a:hover,
.site-nav .sub-menu a:focus-visible,
.site-nav .sub-menu a[aria-current="page"] {
  background-color: var(--surface-tint);
  color: var(--brand-primary);
  text-decoration: none;
}

.site-nav .menu-item-has-children > a::after {
  content: "";
  width: 6px;
  height: 6px;
  margin-left: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

/* Mega menu: sub-menu styles */
.site-nav .sub-menu.mega-menu {
  left: auto;
  right: 0;
  grid-template-columns: repeat(3, minmax(148px, 1fr));
  gap: var(--space-6) var(--space-8);
  min-width: 540px;
  padding: var(--space-6);
}

.site-nav li:hover > .sub-menu.mega-menu,
.site-nav li:focus-within > .sub-menu.mega-menu {
  display: grid;
}

.site-nav .mega-col {
  display: block;
}

.site-nav .mega-title {
  display: block;
  margin-bottom: var(--space-3);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.095em;
  text-transform: uppercase;
  color: var(--brand-accent);
}

.site-nav .mega-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav .mega-list a {
  min-height: 32px;
  padding: 6px 10px;
  font-size: 14px;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-control);
  border: 1px solid var(--brand-primary);
  background-color: var(--brand-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color var(--quick) var(--ease), border-color var(--quick) var(--ease);
}

.btn-nav:hover {
  background-color: var(--brand-hover);
  border-color: var(--brand-hover);
  color: #FFFFFF;
  text-decoration: none;
}

@media (max-width: 800px) {
  .header-inner {
    min-height: 0;
    padding-block: var(--space-4);
    flex-wrap: wrap;
    row-gap: var(--space-3);
  }
  .identity-divider,
  .identity-tagline {
    display: none;
  }
  .site-nav-bar {
    display: contents;
  }
  .site-nav {
    order: 3;
    flex-basis: 100%;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-4);
  }
  .btn-nav {
    order: 2;
    margin-left: auto;
  }
  .site-nav > li.menu-item-has-children {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-nav .sub-menu {
    position: static;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-3);
    min-width: 0;
    padding: var(--space-1) 0 0;
    background-color: transparent;
    border: 0;
    box-shadow: none;
  }
  .site-nav .sub-menu a {
    min-height: 32px;
    padding: 4px 0;
    font-size: 13px;
  }
  .site-nav .menu-item-has-children > a::after {
    width: 5px;
    height: 5px;
  }
  .site-nav .sub-menu.mega-menu {
    flex-direction: column;
    gap: var(--space-3);
    min-width: 0;
    padding: 0;
    right: auto;
    left: 0;
  }
  .site-nav .mega-title {
    margin-bottom: var(--space-1);
  }
  .site-nav .mega-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-3);
  }
}

@media (max-width: 560px) {
  .site-nav a {
    padding: 0;
    font-size: 14px;
  }
  .btn-nav {
    padding: 9px 14px;
    font-size: 14px;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-6);
  min-height: 78px;
  padding-block: var(--space-5);
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.footer-meta a {
  color: var(--text-secondary);
}

.footer-meta a:hover {
  color: var(--brand-primary);
}

/* ==========================================================================
   Components (DESIGN V2.1)
   ========================================================================== */
.eyebrow {
  display: block;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0.095em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--brand-accent);
  margin-bottom: var(--space-3);
}

.lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 24px;
  border-radius: var(--radius-control);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border: 1px solid var(--brand-primary);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--quick) var(--ease), border-color var(--quick) var(--ease);
}

.btn:hover {
  background-color: var(--brand-hover);
  border-color: var(--brand-hover);
  text-decoration: none;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--brand-primary);
  border-color: var(--border-control);
}

.btn-secondary:hover {
  background-color: var(--surface-tint);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.panel {
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-8);
}

/* Gray block placeholder figure */
.figure-frame {
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.frame-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.figure-block {
  background-color: var(--placeholder);
  border-bottom: 1px solid var(--border-subtle);
  width: 100%;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.figure-block-tall {
  aspect-ratio: 4 / 3;
}

.figure-block-badge {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background-color: rgba(255, 255, 255, 0.7);
  padding: 4px 10px;
  border-radius: var(--radius-badge);
  border: 1px solid var(--placeholder-border);
}

.frame-caption {
  padding: 14px 20px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  background-color: var(--surface-tint);
}

/* Meta Data List (dl) */
.meta-list {
  display: grid;
  grid-template-columns: minmax(130px, auto) 1fr;
  gap: var(--space-3) var(--space-6);
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}

.meta-list dt {
  color: var(--text-secondary);
  font-weight: 500;
}

.meta-list dd {
  margin: 0;
  color: var(--text-primary);
}

/* Bulleted Dash List */
.dash-list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0 0;
  display: grid;
  gap: var(--space-3);
}

.dash-list li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-secondary);
}

.dash-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 1.5px;
  background-color: var(--brand-accent);
}

/* Accent Study Banner */
.accent-study {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border-radius: var(--radius-card);
  padding: var(--space-10);
  margin-block: var(--space-16);
}

.accent-study .eyebrow {
  color: #A3C9C2;
}

.accent-study h3 {
  color: #FFFFFF;
  font-size: 26px;
  line-height: 1.3;
  margin-bottom: var(--space-3);
  max-width: 32ch;
}

.accent-study p {
  color: #D2E3DE;
  font-size: 17px;
  max-width: 56ch;
  margin: 0;
}

/* Final Notes */
.final-notes {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
  padding-block: var(--space-10) var(--space-16);
}

.final-notes h3 {
  font-size: 20px;
  max-width: 18ch;
}

.final-notes p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

@media (max-width: 740px) {
  .final-notes {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ==========================================================================
   About Page Specific Layouts
   ========================================================================== */
.about-hero {
  padding-block: var(--space-16) var(--space-12);
}

.hero-grid {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-copy h1 {
  margin-bottom: var(--space-5);
  max-width: 15ch;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-note::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background-color: var(--border-control);
}

.principle-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

.principle-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.principle-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-accent);
}

.principle-item h4 {
  font-size: 17px;
  line-height: 1.35;
}

.principle-item p {
  font-size: 15px;
  line-height: 1.55;
}

.split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.split-7-5 {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: var(--space-10);
  align-items: start;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.capability-card {
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.capability-card .principle-num {
  margin-bottom: var(--space-1);
}

.capability-card h4 {
  font-size: 18px;
}

.capability-card p {
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}

/* Responsive Overrides */
@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .split-7-5 {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 800px) {
  .card-grid-3 {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .principle-strip {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .split-2 {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* ==========================================================================
   Starter Homepage Compatibility
   ========================================================================== */
.hero {
  max-width: var(--sheet-width);
  margin-inline: auto;
  padding: var(--space-16) var(--gutter) var(--space-12);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 24px;
  border-radius: var(--radius-control);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  background-color: var(--brand-primary);
  color: #FFFFFF;
  text-decoration: none;
  margin-top: var(--space-4);
}

.button:hover {
  background-color: var(--brand-hover);
  color: #FFFFFF;
  text-decoration: none;
}

/* ==========================================================================
   Test Page Specific Layouts (page-test.php)
   ========================================================================== */
.test-page {
  padding-block: var(--space-16) var(--space-20);
  background-image:
    linear-gradient(rgba(220, 227, 222, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220, 227, 222, 0.5) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
}

.test-page-inner {
  display: flex;
  justify-content: center;
}

.test-card {
  position: relative;
  width: 100%;
  max-width: 720px;
  padding: clamp(56px, 9vw, 104px) clamp(24px, 6vw, 72px);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  text-align: center;
  overflow: hidden;
  animation: test-card-rise 480ms var(--ease) both;
}

/* Top accent marker */
.test-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 3px;
  background-color: var(--brand-primary);
  border-radius: 0 0 var(--radius-badge) var(--radius-badge);
}

/* Inset hairline frame */
.test-card::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid var(--border-subtle);
  border-radius: calc(var(--radius-card) - 4px);
  pointer-events: none;
}

.test-eyebrow {
  position: relative;
  z-index: 1;
  margin: 0 0 var(--space-8);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-accent);
}

.test-display {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: clamp(64px, 14vw, 136px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.test-display::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin: var(--space-8) auto 0;
  background-color: var(--brand-accent);
}

.test-content {
  position: relative;
  z-index: 1;
  max-width: 44ch;
  margin: var(--space-8) auto 0;
  padding: var(--space-3) var(--space-5);
  background-color: var(--surface-tint);
  border-radius: var(--radius-control);
}

.test-content p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.test-content > :first-child {
  margin-top: 0;
}

.test-content > :last-child {
  margin-bottom: 0;
}

@keyframes test-card-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .test-card {
    animation: none;
  }
}

@media (max-width: 740px) {
  .test-page {
    padding-block: var(--space-10) var(--space-16);
    background-size: 48px 48px;
  }

  .test-card {
    padding: 48px 20px;
  }

  .test-card::after {
    inset: 10px;
  }

  .test-display {
    font-size: clamp(64px, 20vw, 96px);
  }
}

/* ==========================================================================
   Contact & Thank You Pages (page-contact.php, page-thank-you.php)
   ========================================================================== */
.contact-hero {
  padding-block: var(--space-16) var(--space-12);
}

.contact-hero h1 {
  margin-bottom: var(--space-5);
  max-width: 16ch;
}

.pending {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 14px;
}

.contact-form-card {
  max-width: 860px;
  padding: var(--space-10);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.contact-form-card h2 {
  margin-bottom: var(--space-3);
}

.contact-form-card .lead {
  max-width: 56ch;
}

.inquiry-form {
  margin-top: var(--space-8);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5) var(--space-6);
}

.field-full {
  grid-column: 1 / -1;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.field .req {
  color: var(--state-error);
}

.field input,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--surface);
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
}

.field textarea {
  min-height: 148px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--brand-primary);
  outline: 2px solid var(--brand-accent);
  outline-offset: 1px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.form-note {
  max-width: 52ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-secondary);
}

.thanks-section {
  padding-block: var(--space-20);
}

.thanks-card {
  max-width: 720px;
}

.thanks-card h1 {
  margin-bottom: var(--space-4);
}

.thanks-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

@media (max-width: 1040px) {
  .contact-hero .split-7-5 {
    gap: var(--space-8);
  }
}

@media (max-width: 740px) {
  .contact-hero {
    padding-block: var(--space-12) var(--space-10);
  }

  .contact-form-card {
    padding: var(--space-6);
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  .form-actions {
    align-items: flex-start;
  }

  .thanks-section {
    padding-block: var(--space-12);
  }
}

/* ==========================================================================
   Home Page Layouts (front-page.php)
   ========================================================================== */
.home-hero {
  padding-block: var(--space-16) var(--space-12);
}

.hero-copy h1 {
  margin-bottom: var(--space-5);
  max-width: 20ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}



/* ==========================================================================
   Product Catalog & Detail Layouts (archive-product.php, single-product.php)
   ========================================================================== */
.product-archive-hero {
  padding-block: var(--space-16) var(--space-12);
}

.product-filter-section {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--surface);
}

.category-pill-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
}

.pill-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-right: var(--space-2);
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--canvas);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: all var(--quick) var(--ease);
}

.cat-pill:hover {
  background-color: var(--surface-tint);
  color: var(--brand-primary);
  border-color: var(--border-control);
  text-decoration: none;
}

.cat-pill.active {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border-color: var(--brand-primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.product-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  transition: transform var(--quick) var(--ease), box-shadow var(--quick) var(--ease);
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.product-image-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: calc(var(--radius-card) - 4px);
  overflow: hidden;
  background-color: var(--surface-tint);
  margin-bottom: var(--space-4);
}

.product-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--reveal) var(--ease);
}

.product-card:hover .product-image-frame img {
  transform: scale(1.02);
}

.coop-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: rgba(33, 78, 73, 0.9);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
}

.coop-badge-inline {
  display: inline-block;
  background-color: var(--surface-tint);
  color: var(--brand-accent);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.product-card-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-cat-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: var(--space-1);
}

.product-title {
  font-size: 19px;
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

.product-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.product-title a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.product-short-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-specs-mini {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--text-secondary);
  display: grid;
  gap: 3px;
}

.spec-label {
  font-weight: 500;
  color: var(--text-primary);
}

.product-card-footer {
  margin-top: var(--space-4);
}

.btn-more {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
  text-decoration: none;
}

.btn-more:hover {
  color: var(--brand-hover);
  text-decoration: underline;
}

/* Single Product Details Layout */
.product-single-layout {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: var(--space-12);
  align-items: start;
}

.product-meta-tags {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.product-actions-box {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.back-link {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-3);
}

.back-link:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

@media (max-width: 1040px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-single-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 640px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .category-pill-bar {
    gap: var(--space-2);
  }
}

.home-hero-art,
.home-hero-art svg {
  display: block;
  width: 100%;
}

.home-hero-art svg {
  height: auto;
  aspect-ratio: 8 / 5;
}

.home-capability-art,
.home-capability-art svg {
  display: block;
  width: 100%;
}

.home-capability-art svg {
  height: auto;
  aspect-ratio: 8 / 5;
}

/* ==========================================================================
   OEM Hair Dye Manufacturer Landing Page (page-oem-hair-dye-manufacturer.php)
   ========================================================================== */
.oem-landing-hero {
  padding-block: var(--space-16) var(--space-12);
}

.oem-landing-hero-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: var(--space-12);
  align-items: center;
}

.oem-landing-copy h1 {
  max-width: 17ch;
  margin-bottom: var(--space-5);
}

.oem-landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.oem-landing-proofline {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  font-size: 14px;
  color: var(--text-secondary);
}

.oem-resource-grid,
.oem-capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.oem-resource-card {
  min-height: 190px;
}

.oem-resource-card h3 {
  margin-block: var(--space-2) var(--space-3);
  font-size: 21px;
}

.oem-resource-card p,
.oem-capability-card p {
  font-size: 16px;
  color: var(--text-secondary);
}

.oem-capability-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.oem-capability-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  margin-bottom: var(--space-5);
  border-radius: calc(var(--radius-card) - 4px);
  background-color: var(--surface-tint);
}

.oem-capability-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.oem-capability-card h3 {
  margin-block: var(--space-2) var(--space-3);
  font-size: 21px;
}

.oem-proof-band {
  padding-block: var(--space-12);
  background-color: var(--brand-primary);
  color: #FFFFFF;
}

.oem-proof-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: var(--space-12);
  align-items: center;
}

.oem-proof-band h2 {
  max-width: 18ch;
  color: #FFFFFF;
}

.oem-proof-band .eyebrow {
  color: #A3C9C2;
}

.oem-proof-band .lead {
  color: #D2E3DE;
}

.oem-proof-list {
  display: grid;
  gap: var(--space-4);
}

.oem-proof-list div {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255,255,255,.22);
  color: #D2E3DE;
}

.oem-proof-list strong {
  color: #A3C9C2;
  font-family: var(--font-mono);
  font-size: 14px;
}

.oem-inquiry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.oem-inquiry-grid h2 {
  max-width: 16ch;
}

.oem-inquiry-card {
  padding: var(--space-8);
  background-color: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.oem-landing-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5) var(--space-6);
}

.oem-form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.oem-form-field-full,
.oem-landing-form > button,
.oem-form-note {
  grid-column: 1 / -1;
}

.oem-form-field label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.oem-form-field label span {
  color: var(--state-error);
}

.oem-form-field input,
.oem-form-field textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--surface);
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
}

.oem-form-field textarea {
  min-height: 140px;
  resize: vertical;
}

.oem-form-field input:focus,
.oem-form-field textarea:focus {
  border-color: var(--brand-primary);
  outline: 2px solid var(--brand-accent);
  outline-offset: 1px;
}

.oem-form-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .oem-landing-hero-grid,
  .oem-proof-grid,
  .oem-inquiry-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 640px) {
  .oem-resource-grid,
  .oem-capability-grid,
  .oem-landing-form {
    grid-template-columns: 1fr;
  }

  .oem-form-field-full,
  .oem-landing-form > button,
  .oem-form-note {
    grid-column: auto;
  }

  .oem-inquiry-card {
    padding: var(--space-6);
  }
}