/**
 * Associated Rubber & Mechanical - Main Stylesheet
 * Modern, professional design for B2B industrial audience
 *
 * Sections: Variables | Reset & Base | Layout | Header & Nav | Buttons | Cards |
 *           Gallery | Page intro | Hero | Trusted By | Customer list | Footer |
 *           Forms | Responsive | Utilities
 */

/* ============================================
   CSS Variables (Design System)
   ============================================ */
:root {
    /* Colors - Gray-focused theme */
    --color-primary: #4a5568; /* Steel gray as primary instead of blue */
    --color-primary-dark: #2d3748; /* Dark gray for headers */
    --color-secondary: #e84b2a; /* Orange for CTAs */
    --color-accent: #2c5282; /* Blue used sparingly as accent */
    --color-neutral-light: #f7fafc;
    --color-neutral-medium: #edf2f7;
    --color-neutral-dark: #e2e8f0;
    --color-neutral-darker: #cbd5e0;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-white: #ffffff;
    --color-border: #cbd5e0;
    --color-bg-main: #f7fafc;
    --color-bg-section: #ffffff;

    /* Typography */
    --font-heading: 'Montserrat', Arial, Helvetica, sans-serif;
    --font-body: 'Open Sans', Arial, Helvetica, sans-serif;
    
    /* Type Scale */
    --font-size-h1: 3rem;
    --font-size-h2: 2.25rem;
    --font-size-h3: 1.75rem;
    --font-size-h4: 1.5rem;
    --font-size-body: 1rem;
    --font-size-small: 0.875rem;
    --font-size-large: 1.125rem;

    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-s: 0.5rem;
    --spacing-m: 1rem;
    --spacing-l: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --container-max-width: 1440px;
    --header-height: 80px;
    --header-height-mobile: 60px;
    --grid-gutter: 2rem;

    /* Shadows */
    --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-m);
    color: var(--color-primary-dark);
}

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

h4 {
    font-size: var(--font-size-h4);
}

p {
    margin-bottom: var(--spacing-l);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

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

/* Lazy loading placeholder */
img[loading="lazy"] {
    background-color: var(--color-neutral-medium);
    min-height: 200px;
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section {
    padding: var(--spacing-2xl) 0;
}

/* Alternate section backgrounds for visual interest */
.section:nth-of-type(even) {
    background-color: var(--color-neutral-medium);
}

/* Override for specific sections that should be white */
.section.background-white {
    background-color: var(--color-white);
}

/* Dark section (e.g. customer logos) - same as hero, overrides alternating section bg */
.section.section-dark {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.section-dark .section-dark-title h2 {
    color: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title h2 {
    margin-bottom: var(--spacing-m);
}

.section-title p {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--grid-gutter);
}

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

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

.grid-4 {
    grid-template-columns: repeat(3, 1fr);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    background-color: var(--color-neutral-medium);
    box-shadow: var(--shadow-subtle);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 2px solid var(--color-neutral-darker);
}

.header .container {
    height: 100%;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    min-height: var(--header-height);
}

.header-content > * {
    align-self: center;
}

/* Logo + company name (logo is link; name is not) */
.logo-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-m);
    min-width: 0;
}

.logo {
    height: 60px;
    max-height: 100%;
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1;
}

.logo:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

.logo img {
    height: 100%;
    width: auto;
    max-width: 200px;
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-h4);
    color: var(--color-primary-dark);
    white-space: nowrap;
    min-width: 0;
}

@media (max-width: 1199px) {
    .logo-text {
        font-size: 1.2rem;
    }
}

@media (max-width: 991px) {
    .logo-text {
        font-size: 1rem;
    }
}

/* Allow company name to wrap only when it needs to fit (no fixed max-width) */
@media (max-width: 900px) {
    .logo-text {
        white-space: normal;
        line-height: 1.25;
    }
}

/* Nav links & dropdown */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin: 0;
    padding: 0;
}

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

.nav-link {
    color: var(--color-text);
    font-weight: 600;
    padding: var(--spacing-s) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-secondary);
    text-decoration: none;
}

.nav-link.active {
    color: var(--color-secondary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-secondary);
}


span.nav-link {
    cursor: default;
}

span.nav-link:hover {
    color: var(--color-text);
}

.back-to-top-wrap {
    margin: 0;
    padding: var(--spacing-l) 0 var(--spacing-xl);
}

.back-to-top {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.back-to-top:hover {
    color: var(--color-secondary);
}

/* Services Dropdown */
.nav-item.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-medium);
    border-radius: 4px;
    min-width: 200px;
    padding: var(--spacing-s) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    list-style: none;
    margin-top: var(--spacing-s);
}

.nav-item.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: var(--spacing-s) var(--spacing-l);
    color: var(--color-text);
    transition: background-color var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--color-neutral-light);
    color: var(--color-secondary);
    text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-s);
    font-size: 1.5rem;
    color: var(--color-text);
    line-height: 1;
    margin: 0;
}

/* ============================================
   Buttons & CTAs
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-m) var(--spacing-xl);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--font-size-body);
    text-align: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #c53030;
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

.btn-secondary:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    text-decoration: none;
}

.btn-large {
    padding: var(--spacing-l) var(--spacing-2xl);
    font-size: var(--font-size-large);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background-color: var(--color-bg-section);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    height: 100%;
    text-align: left;
}

.card-text {
    flex-grow: 1;
    margin-bottom: var(--spacing-l);
    color: var(--color-text-light);
}

.card .btn {
    margin-top: auto;
    align-self: center;
}

.card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: contain;
    object-position: top center;
    background-color: var(--color-neutral-medium);
    border-radius: 4px;
    margin-bottom: var(--spacing-l);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.card a:hover .card-image {
    transform: scale(1.05);
    opacity: 0.9;
}

.card a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-title {
    margin-bottom: var(--spacing-m);
    color: var(--color-primary-dark);
}

/* ============================================
   Gallery (grids, sidebar, project cards)
   ============================================ */
/* Featured project cards: frame controls size, image fills and crops from bottom/sides only */
.featured-project-card__image-link {
    display: block;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    margin-bottom: var(--spacing-m);
    border-radius: 6px;
    background-color: var(--color-neutral-medium);
}

/* Pure visual layer: kill intrinsic sizing (overrides global img) */
.featured-project-card__image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    margin: 0;
    display: block;
    min-height: 0;
    object-fit: cover;
    object-position: top center;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.featured-project-card__image-link:hover .featured-project-card__image {
    transform: scale(1.03);
    opacity: 0.92;
}

/* Compact gallery grid: 1–3 columns by breakpoint; equal card size */
.gallery-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-m);
}

.gallery-grid .card {
    padding: var(--spacing-m);
}

/* Frame: link controls size (aspect-ratio), image fills and crops from bottom/sides only */
.gallery-grid .card a:has(.card-image) {
    display: block;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 6px;
    margin-bottom: var(--spacing-m);
    background-color: var(--color-neutral-medium);
}

/* Pure visual layer: no intrinsic sizing (overrides global img rules) */
.gallery-grid .card a .card-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    margin: 0;
    display: block;
    min-height: 0;
    object-fit: cover;
    object-position: top center;
    border-radius: 6px;
}

.gallery-grid .card-title {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Content with gallery sidebar: main content left, gallery in colored strip on the right */
.content-with-gallery {
    display: grid;
    gap: 0;
    align-items: start;
}

@media (min-width: 992px) {
    .content-with-gallery {
        grid-template-columns: minmax(0, 58ch) 1fr;
        gap: var(--spacing-2xl);
    }
}

/* Wide screens: use more of the viewport and put the extra width in the gap (not outer margins) */
@media (min-width: 1200px) {
    .container:has(.content-with-gallery) {
        max-width: min(1680px, 96vw);
        padding-left: var(--spacing-m);
        padding-right: var(--spacing-m);
    }
    .content-with-gallery {
        gap: clamp(var(--spacing-2xl), 3rem + 5vw, 8rem);
    }
}

.content-with-gallery__main {
    min-width: 0;
}

.gallery-sidebar {
    background: linear-gradient(180deg, rgba(44, 82, 130, 0.06) 0%, rgba(44, 82, 130, 0.12) 100%);
    border-radius: 8px;
    padding: var(--spacing-xl);
    border: 1px solid rgba(44, 82, 130, 0.15);
}


.gallery-sidebar .section-title,
.gallery-sidebar h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-l);
    font-size: 1.15rem;
    color: var(--color-primary-dark);
}

/* Sidebar gallery: 1–3 columns by breakpoint; equal card size */
.gallery-sidebar .gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-s);
}

.gallery-sidebar .gallery-grid .card {
    padding: var(--spacing-s);
    min-width: 0;
}

/* Frame: link controls size (aspect-ratio); no margin so no ghost gap */
.gallery-sidebar .gallery-grid .card a {
    display: block;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 4px;
    margin-bottom: 0;
    background-color: var(--color-neutral-light);
}

/* Pure visual layer: kill intrinsic sizing (overrides global img + lazy min-height) */
.gallery-sidebar .gallery-grid .card-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    margin: 0;
    display: block;
    min-height: 0;
    object-fit: cover;
    object-position: top center;
}

.gallery-sidebar .gallery-grid .card-title {
    font-size: 0.75rem;
    margin: var(--spacing-xs) 0 0;
    line-height: 1.2;
}

/* Gallery: 2 columns from 768px, 3 columns from 1200px (equal card size) */
@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .gallery-sidebar .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .gallery-sidebar .gallery-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Gallery layout: stack content + sidebar on smaller viewports */
@media (max-width: 991px) {
    .content-with-gallery {
        grid-template-columns: 1fr;
    }
    .content-with-gallery__sidebar {
        order: 2;
    }
}

/* ============================================
   Page intro (image + text at top of content)
   ============================================ */
/* Readable line length for text only; gallery and other sections use full space */
.content-column {
    max-width: 70ch;
    margin-right: auto;
}

.page-intro {
    display: grid;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    align-items: start;
}

@media (min-width: 768px) {
    .page-intro {
        grid-template-columns: 1fr minmax(200px, 42%);
        gap: var(--spacing-xl);
    }
    .page-intro__body { order: 1; }
    .page-intro__image { order: 2; }
}

/* Fixed region so every intro image crops to the same frame */
.page-intro__image {
    aspect-ratio: 4 / 3;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    background: var(--color-bg-muted, #f0f0f0);
}

.page-intro__image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
}

.page-intro__body h2:first-child {
    margin-top: 0;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/headbg.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-l);
    font-size: 3.5rem;
}

.hero p {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-l);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Trusted By (customer logos carousel)
   ============================================ */
/* Featured (one large sliding logo) + strip (all small). Transition = slide only, no flash. */
.trusted-by {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (min-width: 768px) {
    .trusted-by {
        grid-template-columns: minmax(200px, min(50%, 520px)) 1fr;
        gap: var(--spacing-2xl);
    }
}

.trusted-by__featured {
    width: 100%;
    max-width: 400px;
    height: 140px;
    overflow: hidden;
    justify-self: center;
}

@media (min-width: 768px) {
    .trusted-by__featured {
        max-width: 480px;
        height: 180px;
    }

    .trusted-by__strip-item {
        width: 80px;
        height: 56px;
        padding: 0.375rem;
    }
}

/* Track: --item-count set by JS. Slide only, no blur. */
.trusted-by__featured-track {
    --featured-index: 0;
    --slide-duration: 0.7s;
    --item-count: 13;
    display: flex;
    height: 100%;
    width: calc(var(--item-count) * 100%);
    transform: translateX(calc(-1 * var(--featured-index) * (100% / var(--item-count))));
    transition: transform var(--slide-duration) cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
    .trusted-by__featured-track {
        transition: none;
    }
}

.trusted-by__featured-item {
    flex: 0 0 calc(100% / var(--item-count));
    width: calc(100% / var(--item-count));
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.trusted-by__featured-item img {
    max-height: 100%;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    min-height: 0;
    background: none;
    background-color: transparent;
}

/* Schmueser and M3 logos are dark; add a light halo in the featured slot so they read on the grey-blue background */
.trusted-by__featured-item--schmueser,
.trusted-by__featured-item--m3 {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
}

.trusted-by__strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-m);
}

.trusted-by__strip-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 48px;
    padding: 0.25rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: transparent;
    font: inherit;
    color: inherit;
    transition: opacity 0.2s ease, background-color 0.2s ease;
}

.trusted-by__strip-item:hover,
.trusted-by__strip-item:focus-visible {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.08);
}

.trusted-by__strip-item[aria-selected="true"] {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.12);
    outline: 1px solid rgba(255, 255, 255, 0.25);
}

.trusted-by__strip-item img {
    max-height: 100%;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    min-height: 0;
    background: none;
    background-color: transparent;
}

@media (max-width: 767px) {
    .trusted-by__featured {
        max-width: 300px;
        height: 120px;
    }

    .trusted-by__strip-item {
        width: 52px;
        height: 40px;
    }
}

/* ============================================
   Customer list (project page badges)
   ============================================ */
.customer-list {
    display: grid;
    grid-template-columns: repeat(3, auto);
    justify-content: center;
    gap: var(--spacing-m);
}

@media (max-width: 767px) {
    .customer-list {
        grid-template-columns: repeat(2, auto);
    }
}

.customer-badge {
    display: inline-block;
    padding: var(--spacing-s) var(--spacing-l);
    background-color: var(--color-neutral-medium);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-weight: 600;
    color: var(--color-primary-dark);
}

/* ============================================
   Footer (site footer bar)
   ============================================ */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: var(--spacing-l) 0;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-s);
    text-align: center;
}

.footer-contact {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-s) var(--spacing-l);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-small);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.9);
}

.footer-contact a:hover {
    color: var(--color-white);
    text-decoration: underline;
}

.footer-bottom {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-small);
}

/* ============================================
   Forms
   ============================================ */
/* Form elements (inputs, labels, validation) */
.form-group {
    margin-bottom: var(--spacing-l);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-s);
    color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-m);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(232, 75, 42, 0.1);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: #e53e3e;
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-error {
    color: #e53e3e;
    font-size: var(--font-size-small);
    margin-top: var(--spacing-xs);
}

.form-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: var(--spacing-l);
    border-radius: 4px;
    margin-top: var(--spacing-l);
}

/* Contact page layout (form wider, sidebar right on large screens) */
.contact-layout {
    grid-template-columns: 2fr 1fr;
}

@media (max-width: 991px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }

    /* Cards first on small screens (call vs. form) */
    .contact-form-col {
        order: 2;
    }

    .contact-sidebar {
        order: 1;
    }
}

/* Contact page sidebar */
.contact-sidebar {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-sidebar-card {
    display: block;
    height: auto;
}

.contact-sidebar-card .card-text,
.contact-sidebar-card .btn {
    margin: 0;
}

.contact-sidebar h2 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-m);
}

.contact-info-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xs) var(--spacing-m);
    margin: 0;
    align-items: baseline;
}

.contact-info-list dt {
    grid-column: 1;
    font-weight: 600;
    color: var(--color-primary-dark);
    font-size: var(--font-size-small);
    margin: 0;
}

.contact-info-list dd {
    grid-column: 2;
    margin: 0;
}

.contact-info-list a {
    color: var(--color-accent);
}

/* Staff list (about/contact) */
.staff-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-l);
}

.staff-entry {
    padding-bottom: var(--spacing-l);
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-body);
}

.staff-entry:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.staff-entry a {
    color: var(--color-accent);
}

.services-coatings-note {
    margin-top: var(--spacing-xl);
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.services-coatings-note a {
    color: var(--color-accent);
}

/* Checkbox group (e.g. contact form services) */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-m);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-s);
    cursor: pointer;
    padding: var(--spacing-s) var(--spacing-m);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-white);
    transition: all var(--transition-fast);
    font-size: var(--font-size-body);
}

.checkbox-label:hover {
    border-color: var(--color-primary);
    background-color: var(--color-neutral-light);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-secondary);
    cursor: pointer;
}

.checkbox-label:has(input:checked) {
    border-color: var(--color-secondary);
    background-color: rgba(232, 75, 42, 0.05);
}

/* ============================================
   Responsive Design
   ============================================ */
/* Tablet: 2 columns, smaller hero */
@media (max-width: 991px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
        font-size: 2.5rem;
    }
}

/* Mobile: single column, mobile nav, smaller type */
@media (max-width: 767px) {
    :root {
        --header-height: var(--header-height-mobile);
        --font-size-h1: 2rem;
        --font-size-h2: 1.75rem;
        --font-size-h3: 1.5rem;
        --font-size-h4: 1.25rem;
        --grid-gutter: 1rem;
    }

    .container {
        padding: 0 var(--spacing-m);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    /* Mobile nav (drawer) */
    .menu-toggle {
        display: block;
    }

    .logo-text {
        font-size: clamp(0.75rem, 3.5vw, 1rem);
    }

    .nav {
        position: fixed;
        top: var(--header-height-mobile);
        left: 0;
        right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-medium);
        padding: var(--spacing-l);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: 999;
        max-height: calc(100vh - var(--header-height-mobile));
        overflow-y: auto;
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        width: 100%;
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link {
        display: block;
        padding: var(--spacing-m);
        width: 100%;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--color-neutral-light);
        margin: 0;
        padding: 0;
    }

    .dropdown-link {
        padding-left: var(--spacing-2xl);
    }

    /* Grid adjustments */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    /* Footer (stack contact) */
    .footer-contact {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-m); }
.mt-2 { margin-top: var(--spacing-l); }
.mt-3 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-m); }
.mb-2 { margin-bottom: var(--spacing-l); }
.mb-3 { margin-bottom: var(--spacing-xl); }

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Skip to main content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}