/*
Theme Name: Ambient Air Solutions Theme
Theme URI: https://example.com/
Author: Tom Ashby (Ashby Studios)
Author URI: https://ashbystudios.co.uk/
Description: Custom placeholder-first WordPress theme for ambient air solutions and air curtain products.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ambient-air-solutions
Tags: custom-theme, responsive, b2b, industrial, clean
*/

:root {
  /* Brand */
  --color-brand-dark: #125dc2;
  --color-brand-light: #08c2f6;
  /* Complement: airy ice-blue surfaces so the logo reads clearly */
  --color-header-surface: #eef6fc;
  --color-ink: #0a1628;
  --color-ink-muted: #4a5f75;
  --color-surface: #ffffff;
  --color-canvas: #f5fafe;
  --color-border: #d4e5f0;
  --color-hero-bg: #062a52;
  --color-hero-fg: #f4f9fd;
  --color-accent: #125dc2;
  --color-accent-hover: #0e4a9e;
  --color-highlight: #08c2f6;
  --color-link: #125dc2;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(12, 17, 23, 0.06);
  --shadow-md: 0 12px 40px rgba(12, 17, 23, 0.08);
  --font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --tracking-tight: -0.02em;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover,
a:focus {
  text-decoration: underline;
}

.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
}

.container {
  width: min(1140px, 92%);
  margin: 0 auto;
}

.section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.section--tight {
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.section-title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.section-lead {
  margin: 0 0 1.75rem;
  max-width: 38rem;
  font-size: 1.0625rem;
  color: var(--color-ink-muted);
}

.section-kicker {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin-bottom: 0.65rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

.grid-2 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

/* Placeholders: readable labels without “wireframe” dashed boxes */
.placeholder-image {
  position: relative;
  min-height: 200px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(18, 93, 194, 0.1) 0%, rgba(8, 194, 246, 0.08) 100%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 8px,
      rgba(12, 17, 23, 0.03) 8px,
      rgba(12, 17, 23, 0.03) 9px
    );
  border: 1px solid rgba(12, 17, 23, 0.08);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--color-ink-muted);
}

.placeholder-image::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: calc(var(--radius-lg) - 8px);
  border: 1px dashed rgba(30, 58, 95, 0.2);
  pointer-events: none;
}

.placeholder-text {
  display: block;
  color: var(--color-ink-muted);
  font-weight: 500;
}

.button,
button,
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  border: none;
  padding: 0.7rem 1.5rem;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.button:hover,
.button:focus,
button:hover,
input[type="submit"]:hover {
  background: var(--color-accent-hover);
  text-decoration: none;
}

.button:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-highlight);
  outline-offset: 3px;
}

.button.is-ghost {
  background: transparent;
  color: var(--color-hero-fg);
  border: 1px solid rgba(244, 246, 248, 0.35);
}

.button.is-ghost:hover,
.button.is-ghost:focus {
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.button.is-secondary {
  background: var(--color-surface);
  color: var(--color-link);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.button.is-secondary:hover,
.button.is-secondary:focus {
  background: var(--color-canvas);
  text-decoration: none;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-header-surface);
  background: color-mix(in srgb, var(--color-header-surface) 94%, white);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.site-branding .custom-logo-link {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

/* Logo size is controlled here — PNG scales; previously 48px felt small vs nav text */
.site-branding .custom-logo-link img {
  max-height: clamp(52px, 4.5vw, 76px);
  width: auto;
  height: auto;
  object-fit: contain;
}

.site-branding__text {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  text-decoration: none;
}

.site-branding__text:hover,
.site-branding__text:focus {
  color: var(--color-link);
  text-decoration: none;
}

.menu-toggle {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

.primary-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-navigation a {
  display: inline-block;
  padding: 0.35rem 0;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-ink);
  text-decoration: none;
}

.primary-navigation a:hover,
.primary-navigation a:focus {
  color: var(--color-brand-dark);
  text-decoration: none;
  box-shadow: inset 0 -2px 0 0 var(--color-highlight);
}

.primary-navigation {
  display: none;
}

.primary-navigation.is-open {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  top: 84px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 4%;
  box-shadow: var(--shadow-md);
}

.primary-navigation.is-open ul {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Hero (premium landing) */
.hero {
  background: var(--color-hero-bg);
  color: var(--color-hero-fg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 85% 10%, rgba(8, 194, 246, 0.22), transparent 55%),
    radial-gradient(ellipse 70% 50% at 0% 100%, rgba(18, 93, 194, 0.45), transparent 52%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero .section-title {
  color: var(--color-hero-fg);
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  max-width: 14ch;
}

.hero .section-lead {
  color: rgba(244, 246, 248, 0.82);
  max-width: 36rem;
  font-size: 1.0625rem;
}

.hero .placeholder-image {
  min-height: min(420px, 55vw);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 10px,
      rgba(255, 255, 255, 0.04) 10px,
      rgba(255, 255, 255, 0.04) 11px
    );
  border-color: rgba(255, 255, 255, 0.12);
  color: rgba(244, 246, 248, 0.75);
}

.hero .placeholder-image::after {
  border-color: rgba(255, 255, 255, 0.22);
}

.section--surface {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
}

.trust-strip {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.trust-strip__item {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-canvas);
}

.trust-strip__value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: var(--tracking-tight);
}

.trust-strip__label {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: var(--color-ink-muted);
}

.benefits-grid {
  display: grid;
  gap: 1.25rem;
}

.benefit-card {
  position: relative;
  padding: 1.5rem 1.5rem 1.5rem 1.35rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.benefit-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25rem;
  bottom: 1.25rem;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--color-highlight), var(--color-brand-dark));
}

.benefit-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
}

.benefit-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
}

.cta-band {
  background: linear-gradient(135deg, #062a52 0%, var(--color-brand-dark) 55%, #0a4a8f 100%);
  color: var(--color-hero-fg);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3rem);
  box-shadow: var(--shadow-md);
}

.cta-band .section-title {
  color: inherit;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
}

.cta-band p {
  margin: 0 0 1.5rem;
  max-width: 42rem;
  color: rgba(244, 246, 248, 0.85);
  font-size: 1rem;
}

.cta-band__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
}

.cta-band__links a {
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  padding-bottom: 2px;
}

.cta-band__links a:hover,
.cta-band__links a:focus {
  border-bottom-color: var(--color-highlight);
  color: #fff;
}

.cta-band__sep {
  opacity: 0.45;
  user-select: none;
}

.site-footer {
  background: #080c10;
  color: #c5cdd6;
  padding: 3rem 0 1.75rem;
  margin-top: auto;
}

.site-footer h3 {
  color: #e8ecf0;
  font-size: 0.9375rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-footer p,
.site-footer li {
  font-size: 0.9375rem;
  line-height: 1.55;
}

.site-footer a {
  color: #e8ecf0;
}

.site-footer a:hover,
.site-footer a:focus {
  color: var(--color-highlight);
}

.footer-links-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links-menu a {
  font-weight: 600;
  text-decoration: none;
}

.footer-links-menu a:hover,
.footer-links-menu a:focus {
  text-decoration: underline;
}

.footer-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.footer-bar {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  color: #8b949e;
}

.footer-bar a {
  color: #adb5bd;
}

.entry-content > * {
  margin-block: 0 1rem;
}

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

.form-field {
  margin-bottom: 0.85rem;
}

label {
  font-weight: 600;
  display: block;
  margin-bottom: 0.3rem;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 48px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  background: var(--color-surface);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

/* --- Single product (premium layout) --- */
.product-single__intro {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.product-single__title {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: 1.12;
  color: var(--color-ink);
}

.product-single__hero {
  align-items: start;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.product-single__hero--no-image {
  grid-template-columns: 1fr !important;
}

.product-single__hero--no-image .product-single__visual {
  display: none;
}

.product-single__visual {
  position: relative;
}

.product-single__hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-single__summary-heading {
  margin: 0 0 0.75rem;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  color: var(--color-ink);
}

.product-single__content {
  margin-bottom: 1.5rem;
  color: var(--color-ink-muted);
}

.product-single__content > *:first-child {
  margin-top: 0;
}

.product-single__content > *:last-child {
  margin-bottom: 0;
}

.product-single__cta {
  margin-top: 0.25rem;
}

.product-single__gallery-wrap .section-kicker {
  margin-bottom: 1rem;
}

.product-single__gallery-item {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-single__gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.product-single__gallery-item:focus-visible {
  outline: 2px solid var(--color-highlight);
  outline-offset: 3px;
}

.product-single__gallery-inner {
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.product-single__gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.product-single__gallery-item:hover .product-single__gallery-img {
  transform: scale(1.03);
}

.product-single__gallery-caption {
  display: block;
  padding: 0.65rem 0.85rem;
  font-size: 0.8125rem;
  color: var(--color-ink-muted);
  border-top: 1px solid var(--color-border);
  line-height: 1.4;
}

.product-single__spec-grid {
  align-items: stretch;
}

.product-single__card .product-single__card-title {
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-ink);
}

.product-single__prose {
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
}

.product-single__prose > *:first-child {
  margin-top: 0;
}

.product-single__prose > *:last-child {
  margin-bottom: 0;
}

.product-single__downloads-wrap .section-kicker {
  margin-bottom: 1rem;
}

.product-single__downloads {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.product-single__download {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-align: left;
  max-width: 100%;
  text-decoration: none;
}

.product-single__download:hover,
.product-single__download:focus {
  text-decoration: none;
}

.product-single__download-badge {
  flex-shrink: 0;
  min-width: 2.5rem;
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-brand-dark);
}

.product-single__download-label {
  font-weight: 600;
}

/* Lightbox (product gallery) */
.aas-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 2rem);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.aas-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.aas-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 40, 0.9);
  cursor: pointer;
}

.aas-lightbox__figure {
  position: relative;
  z-index: 1;
  max-width: min(92vw, 1200px);
  max-height: 90vh;
  margin: 0;
}

.aas-lightbox__img {
  display: block;
  max-width: 100%;
  max-height: 85vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.aas-lightbox__close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 2;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.aas-lightbox__close:hover,
.aas-lightbox__close:focus {
  background: var(--color-canvas);
}

.aas-lightbox__caption {
  margin: 0.75rem 0 0;
  text-align: center;
  color: rgba(244, 249, 253, 0.92);
  font-size: 0.9375rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.aas-lightbox__caption:empty {
  display: none;
}

/* --- Products listing (premium layout) --- */
.products-page__hero {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.products-page__hero-inner {
  text-align: center;
  max-width: 68rem;
  margin-left: auto;
  margin-right: auto;
}

.products-page__title {
  margin: 0;
  font-size: clamp(2.4rem, 5.5vw, 3.6rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.products-page__lead {
  margin: 1.15rem auto 0;
  max-width: 62ch;
  color: var(--color-ink-muted);
  font-size: 1.0625rem;
}

.products-page__grid {
  padding-top: clamp(2.5rem, 4vw, 3.5rem);
}

.products-tile {
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.products-tile__link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.products-tile__media {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.products-tile__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.products-tile__placeholder {
  min-height: 0;
  height: 100%;
  border-radius: 0;
}

.products-tile__body {
  padding: 1.85rem 1.75rem 1.6rem;
}

.products-tile__title {
  margin: 0 0 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.products-tile__text {
  margin: 0;
  color: var(--color-ink-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.products-tile__cta {
  display: inline-flex;
  margin-top: 1rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: rgba(18, 93, 194, 0.08);
  color: var(--color-link);
  font-weight: 700;
  font-size: 0.9rem;
}

.products-tile:hover,
.products-tile:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.products-tile:hover .products-tile__img,
.products-tile:focus-within .products-tile__img {
  transform: scale(1.03);
}

@media (min-width: 640px) {
  .trust-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .menu-toggle {
    display: none;
  }

  .primary-navigation,
  .primary-navigation.is-open {
    display: block;
    position: static;
    border: 0;
    padding: 0;
    box-shadow: none;
  }

  .primary-navigation ul {
    display: flex;
    flex-direction: row;
    gap: 1.35rem;
    align-items: center;
  }

  .hero-layout {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
  }

  .footer-columns {
    grid-template-columns: 1.35fr 1fr 1fr;
  }
}

@media (min-width: 980px) {
  .grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}