/* ========================================
   RW Coldstore Construction Ltd
   Calm, controlled, professional.
   Blues, sharp edges, visual tension.
   ======================================== */

:root {
    --blue-950: #080d1b;
    --blue-900: #0b1328;
    --blue-850: #0e1a38;
    --blue-800: #122044;
    --blue-700: #1a3366;
    --blue-600: #1d4ed8;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-300: #93bbfd;
    --blue-200: #bfdbfe;
    --blue-100: #dbeafe;

    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --white: #ffffff;

    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --surface: rgba(255, 255, 255, 0.02);
    --surface-hover: rgba(255, 255, 255, 0.04);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font);
    background: var(--blue-950);
    color: var(--slate-400);
    line-height: 1.65;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 13px 28px;
    border: none;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--blue-600);
    color: var(--white);
}
.btn-primary:hover {
    background: #2563eb;
    box-shadow: 0 6px 24px rgba(29, 78, 216, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--slate-300);
    border: 1px solid var(--border-hover);
}
.btn-secondary:hover {
    border-color: var(--blue-500);
    color: var(--blue-400);
}

.btn-lg { padding: 16px 36px; font-size: 0.92rem; }
.btn-full { width: 100%; justify-content: center; }

/* ── Section Shared ── */
.section-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--blue-400);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 0.95rem;
    color: var(--slate-500);
    max-width: 520px;
    line-height: 1.75;
}

.section-intro {
    margin-bottom: 56px;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s var(--ease);
}

.navbar.scrolled {
    background: rgba(8, 13, 27, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}

.navbar.mega-active {
    background: var(--blue-950);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.logo-img {
    height: 52px;
    width: auto;
    transition: height 0.3s var(--ease);
}

.navbar.scrolled .logo-img {
    height: 44px;
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: var(--blue-600);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.02em;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-name {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.02em;
}

.logo-sub {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--slate-500);
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
}

.nav-links > li {
    position: relative;
}

.nav-links > li > a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--slate-500);
    padding: 10px 16px;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-links > li > a:hover,
.nav-links > li > a.active {
    color: var(--white);
}

.nav-link-cta {
    display: none;
}

/* Mega menu trigger chevron */
.nav-chevron {
    transition: transform 0.25s var(--ease);
    opacity: 0.5;
    flex-shrink: 0;
}

.has-mega.mega-open > a .nav-chevron,
.has-mega:hover > a .nav-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.has-mega > a {
    cursor: default;
}

/* ── Mega Panel ── */

.mega-panel {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 13, 27, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    z-index: 998;
    pointer-events: none;
    overflow-y: auto;
    max-height: calc(100vh - 72px);
}

.navbar.scrolled ~ .mega-backdrop + .mega-panel,
.has-mega .mega-panel {
    top: 72px;
}

.has-mega.mega-open .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.mega-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 40px 24px 48px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
}

/* Mega heading */
.mega-heading {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blue-400);
    margin-bottom: 20px;
    padding-left: 2px;
}

/* Mega items */
.mega-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mega-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 14px 16px;
    transition: all 0.2s var(--ease);
    border-left: 2px solid transparent;
    margin-left: -16px;
}

.mega-item:hover {
    background: rgba(59, 130, 246, 0.04);
    border-left-color: var(--blue-500);
}

.mega-item-num {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--blue-500);
    min-width: 20px;
    padding-top: 2px;
    font-variant-numeric: tabular-nums;
}

.mega-item strong {
    display: block;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 3px;
    letter-spacing: -0.01em;
}

.mega-item span {
    font-size: 0.8rem;
    color: var(--slate-500);
    line-height: 1.5;
}

.mega-item:hover strong {
    color: var(--blue-200);
}

.mega-item.active {
    border-left-color: var(--blue-400);
    background: rgba(59, 130, 246, 0.06);
}

.mega-item.active strong {
    color: var(--blue-200);
}

/* Mega CTA column */
.mega-cta-col {
    border-left: 1px solid var(--border);
    padding-left: 48px;
    display: flex;
    align-items: flex-start;
}

.mega-cta-block {
    padding: 28px 24px;
    background: rgba(59, 130, 246, 0.04);
    border: 1px solid var(--border);
}

.mega-cta-block strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.mega-cta-block p {
    font-size: 0.82rem;
    color: var(--slate-500);
    line-height: 1.6;
    margin-bottom: 20px;
}

.mega-cta-block .btn {
    font-size: 0.8rem;
    padding: 10px 20px;
    display: inline-flex;
    width: auto;
}

/* Mega panel backdrop overlay */
.mega-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(2, 6, 16, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0.3s;
}

.mega-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ── Nav Phone ── */

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate-400);
    padding: 0 16px;
    transition: color 0.2s var(--ease);
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.nav-phone:hover {
    color: var(--white);
}

.nav-phone svg {
    opacity: 0.6;
    flex-shrink: 0;
}

/* ── Nav CTA ── */

.nav-cta {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--white);
    background: var(--blue-600);
    padding: 12px 28px;
    transition: all 0.2s var(--ease);
    white-space: nowrap;
}

.nav-cta:hover {
    background: #2563eb;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.25);
}

/* Mobile phone icon — hidden on desktop */
.nav-phone-mobile {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s var(--ease);
}

/* ========================================
   Hero
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-image {
    position: absolute;
    inset: 0;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, var(--blue-950) 0%, rgba(8, 13, 27, 0.85) 45%, rgba(8, 13, 27, 0.5) 100%),
        linear-gradient(180deg, rgba(8, 13, 27, 0.3) 0%, rgba(8, 13, 27, 0.6) 100%);
}

.hero-grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.025) 1px, transparent 1px);
    background-size: 80px 80px;
}

.hero-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-qualifier {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--blue-400);
    letter-spacing: 0.01em;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeUp 0.7s 0.1s var(--ease) forwards;
}

.hero-title {
    font-size: clamp(2.4rem, 5vw, 3.4rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.08;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 0.7s 0.2s var(--ease) forwards;
}

.hero-desc {
    font-size: 1rem;
    color: var(--slate-500);
    line-height: 1.75;
    max-width: 480px;
    margin-bottom: 36px;
    opacity: 0;
    animation: fadeUp 0.7s 0.3s var(--ease) forwards;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.7s 0.4s var(--ease) forwards;
}

/* Hero Aside — Signal Panel */
.hero-aside {
    opacity: 0;
    animation: fadeUp 0.7s 0.5s var(--ease) forwards;
}

.hero-signal {
    border: 1px solid var(--border);
    background: rgba(8, 13, 27, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.signal-bar {}

.signal-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate-600);
    margin-bottom: 12px;
}

.signal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.signal-tags span {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--slate-300);
    padding: 6px 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.2s;
}

.signal-tags span:hover {
    border-color: var(--blue-500);
    color: var(--blue-400);
    background: rgba(59, 130, 246, 0.05);
}

.temp-scale {
    display: flex;
    align-items: center;
    gap: 12px;
}

.temp-low, .temp-high {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--slate-300);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.temp-low { color: #3b82f6; }
.temp-high { color: #f97316; }

.temp-track {
    flex: 1;
    height: 4px;
    background: var(--border);
    position: relative;
    overflow: hidden;
}

.temp-fill {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #3b82f6, #f97316);
    transform: scaleX(0);
    transform-origin: left;
    animation: fillTrack 1.5s 0.8s var(--ease) forwards;
}

@keyframes fillTrack {
    to { transform: scaleX(1); }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   Showcase Strip
   ======================================== */

.showcase {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--blue-950);
    overflow: hidden;
}

.showcase-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
}

.showcase-item {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
    filter: brightness(0.7) saturate(0.8);
}

.showcase-item:hover img {
    transform: scale(1.04);
    filter: brightness(0.85) saturate(1);
}

.showcase-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    background: linear-gradient(0deg, rgba(8, 13, 27, 0.85) 0%, transparent 100%);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--slate-400);
    transform: translateY(100%);
    transition: transform 0.4s var(--ease);
}

.showcase-item:hover .showcase-caption {
    transform: translateY(0);
}

/* ========================================
   Clients Carousel
   ======================================== */

.clients-strip {
    padding: 56px 0;
    background: var(--blue-900);
    border-top: 1px solid var(--border);
    overflow: hidden;
}

.clients-strip-header {
    max-width: 1120px;
    margin: 0 auto 32px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.clients-strip-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--slate-500);
    white-space: nowrap;
}

.clients-strip-line {
    flex: 1;
    height: 1px;
    background: var(--border);
}

.clients-track-wrapper {
    position: relative;
    width: 100%;
}

.clients-track-wrapper::before,
.clients-track-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.clients-track-wrapper::before {
    left: 0;
    background: linear-gradient(90deg, var(--blue-900) 0%, transparent 100%);
}

.clients-track-wrapper::after {
    right: 0;
    background: linear-gradient(270deg, var(--blue-900) 0%, transparent 100%);
}

.clients-track {
    display: flex;
    align-items: center;
    gap: 64px;
    width: max-content;
    animation: scroll-clients 35s linear infinite;
}

.clients-track:hover {
    animation-play-state: paused;
}

.clients-track img {
    height: 44px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    opacity: 0.45;
    transition: all 0.3s var(--ease);
    filter: grayscale(1) brightness(2) contrast(0.5);
    mix-blend-mode: lighten;
    flex-shrink: 0;
}

.clients-track img:hover {
    opacity: 0.85;
    filter: grayscale(0) brightness(1) contrast(1);
    mix-blend-mode: normal;
}

@keyframes scroll-clients {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ========================================
   Services
   ======================================== */

.services {
    padding: 120px 0;
    background: var(--blue-900);
    border-top: 1px solid var(--border);
}

.services-grid {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
}

.service-card {
    display: grid;
    grid-template-columns: 48px 1fr auto;
    gap: 0 24px;
    align-items: start;
    padding: 32px 36px;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s var(--ease);
    cursor: pointer;
}

.service-card:last-child { border-bottom: none; }

.service-card:hover {
    background: var(--surface-hover);
}

.service-number {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--blue-500);
    padding-top: 2px;
    font-variant-numeric: tabular-nums;
}

.service-card .service-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.service-card .service-desc {
    font-size: 0.88rem;
    color: var(--slate-500);
    line-height: 1.65;
    max-width: 520px;
}

.service-link {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--blue-400);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s var(--ease);
    padding-top: 2px;
}

.service-card:hover .service-link {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   Sectors
   ======================================== */

.sectors {
    padding: 120px 0;
    background: var(--blue-950);
    border-top: 1px solid var(--border);
}

.sectors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.sector-card {
    padding: 40px 36px;
    background: var(--blue-950);
    transition: all 0.3s var(--ease);
}

.sector-card:hover {
    background: var(--surface-hover);
}

.sector-icon {
    width: 32px;
    height: 32px;
    color: var(--blue-400);
    margin-bottom: 20px;
}

.sector-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.sector-card p {
    font-size: 0.88rem;
    color: var(--slate-500);
    line-height: 1.65;
}

/* ========================================
   Approach
   ======================================== */

.approach {
    padding: 120px 0;
    background: var(--blue-900);
    border-top: 1px solid var(--border);
}

.approach-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: start;
}

.approach-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3 / 4;
    max-height: 580px;
}

.approach-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8) saturate(0.85);
}

.approach-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(8, 13, 27, 0.4) 100%);
    pointer-events: none;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.approach-step {
    padding: 0 28px;
    position: relative;
}

.step-marker {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 20px;
}

.step-number {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--blue-500);
    font-variant-numeric: tabular-nums;
    margin-bottom: 12px;
}

.step-line {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--blue-600), transparent);
}

.step-content h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 0.85rem;
    color: var(--slate-500);
    line-height: 1.65;
}

.approach-standards {
    display: flex;
    gap: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.standard-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.standard-icon {
    width: 18px;
    height: 18px;
    color: var(--blue-400);
    flex-shrink: 0;
}

.standard-item span {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--slate-400);
}

/* ========================================
   About
   ======================================== */

.about {
    padding: 120px 0;
    background: var(--blue-950);
    border-top: 1px solid var(--border);
}

.about-layout {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-text {
    font-size: 0.95rem;
    color: var(--slate-400);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-aside {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.about-image {
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8) saturate(0.85);
    transition: transform 0.6s var(--ease);
}

.about-image:hover img {
    transform: scale(1.03);
}

.about-facts {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-top: none;
}

.about-fact {
    background: var(--blue-950);
}

.fact-block {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.fact-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blue-400);
}

.fact-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.01em;
}

.fact-note {
    font-size: 0.82rem;
    color: var(--slate-600);
    line-height: 1.55;
    margin-top: 4px;
}

/* ========================================
   CTA Strip
   ======================================== */

.cta-strip {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.cta-strip-bg {
    position: absolute;
    inset: 0;
}

.cta-strip-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.4) saturate(0.6);
}

.cta-strip-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(8, 13, 27, 0.88) 0%, rgba(8, 13, 27, 0.7) 100%);
}

.cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.cta-text h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.cta-text p {
    font-size: 0.92rem;
    color: var(--slate-500);
}

/* ========================================
   Contact
   ======================================== */

.contact {
    padding: 120px 0;
    background: var(--blue-900);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
    align-items: start;
}

.contact-intro {
    font-size: 0.95rem;
    color: var(--slate-400);
    line-height: 1.75;
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.contact-icon {
    width: 18px;
    height: 18px;
    color: var(--blue-400);
    flex-shrink: 0;
    margin-top: 3px;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--slate-600);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.contact-value {
    font-size: 0.9rem;
    color: var(--slate-300);
}

/* Form */
.contact-form-wrap {
    border: 1px solid var(--border);
    background: var(--surface);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--slate-500);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: var(--font);
    font-size: 0.9rem;
    padding: 11px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--white);
    transition: border-color 0.2s;
    outline: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--blue-500);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--slate-700);
}

.form-group select {
    cursor: pointer;
    color: var(--slate-400);
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2364748b' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-group select option {
    background: var(--blue-900);
    color: var(--white);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: 72px 0 0;
    background: var(--blue-950);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 56px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo .logo-img {
    height: 44px;
    width: auto;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--slate-600);
    line-height: 1.65;
    max-width: 260px;
}

.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a,
.footer-col li {
    font-size: 0.85rem;
    color: var(--slate-600);
    transition: color 0.2s;
}

.footer-col a:hover { color: var(--blue-400); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--slate-700);
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    font-size: 0.78rem;
    color: var(--slate-700);
    transition: color 0.2s;
}

.footer-legal a:hover { color: var(--slate-500); }

/* ========================================
   Scroll Reveal
   ======================================== */

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 1024px) {
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-aside {
        max-width: 480px;
    }

    .hero-overlay {
        background:
            linear-gradient(180deg, var(--blue-950) 0%, rgba(8, 13, 27, 0.8) 40%, rgba(8, 13, 27, 0.6) 100%);
    }

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

    .approach-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .approach-image {
        aspect-ratio: 16 / 9;
        max-height: 360px;
    }

    .approach-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .approach-step {
        padding: 0;
    }

    .about-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

/* ── Page transitions ── */

body {
    opacity: 1;
    transition: opacity 0.25s var(--ease);
}

body.page-transitioning {
    opacity: 0;
}

/* ── Form validation & feedback ── */

.field-error {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 1px #ef4444;
}

.form-error-msg {
    display: block;
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 6px;
    font-weight: 500;
}

.form-success-msg {
    margin-top: 20px;
    padding: 16px 20px;
    background: rgba(5, 150, 105, 0.1);
    border: 1px solid rgba(5, 150, 105, 0.25);
    color: #6ee7b7;
    font-size: 0.85rem;
    line-height: 1.6;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.3s var(--ease);
}

.form-success-msg.visible {
    opacity: 1;
    transform: translateY(0);
}

.form-success-msg strong {
    display: block;
    color: #34d399;
    margin-bottom: 4px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.spin {
    animation: spin 0.8s linear infinite;
}

/* ── Page loader ── */

.page-loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: var(--blue-950);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.4s var(--ease), visibility 0.4s;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Safety: auto-hide loader after 2s even if JS fails */
.page-loader {
    animation: loader-safety 0s 2s forwards;
}

@keyframes loader-safety {
    to { opacity: 0; visibility: hidden; pointer-events: none; }
}

.page-loader-bar {
    width: 48px;
    height: 2px;
    background: var(--border);
    overflow: hidden;
}

.page-loader-bar::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: var(--blue-500);
    animation: loader-slide 0.8s var(--ease) infinite;
}

@keyframes loader-slide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ── Back to top ── */

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 900;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blue-900);
    border: 1px solid var(--border);
    color: var(--slate-400);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.3s var(--ease);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--blue-800);
    color: var(--white);
    border-color: var(--slate-600);
}

/* ── Lightbox ── */

.lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease);
    cursor: zoom-out;
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    transform: scale(0.95);
    transition: transform 0.3s var(--ease);
}

.lightbox-overlay.active img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--white);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s var(--ease);
}

.lightbox-close:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--white);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s var(--ease);
}

.lightbox-nav:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
}

.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

.lightbox-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: var(--slate-500);
    font-weight: 500;
}

@media (max-width: 768px) {

    /* ── Mobile nav overlay ── */
    .nav-links {
        display: none !important;
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        height: 100dvh !important;
        z-index: 1000 !important;
        background: #080d1b !important;
        flex-direction: column !important;
        justify-content: flex-start !important;
        align-items: stretch !important;
        gap: 0 !important;
        overflow-y: auto !important;
        padding: 100px 32px 120px !important;
    }

    /* Subtle grid lines background — matches hero */
    .nav-links::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image:
            linear-gradient(rgba(59, 130, 246, 0.02) 1px, transparent 1px),
            linear-gradient(90deg, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
        background-size: 80px 80px;
        pointer-events: none;
        z-index: -1;
    }

    .nav-links.active {
        display: flex !important;
    }

    /* Staggered entrance animations */
    .nav-links.active > li {
        opacity: 0;
        transform: translateY(16px);
        animation: mobileNavIn 0.4s var(--ease) forwards;
    }
    .nav-links.active > li:nth-child(1) { animation-delay: 0.06s; }
    .nav-links.active > li:nth-child(2) { animation-delay: 0.12s; }
    .nav-links.active > li:nth-child(3) { animation-delay: 0.18s; }
    .nav-links.active > li:nth-child(4) { animation-delay: 0.24s; }
    .nav-links.active > li:nth-child(5) { animation-delay: 0.30s; }

    @keyframes mobileNavIn {
        to { opacity: 1; transform: translateY(0); }
    }

    .nav-links > li {
        width: 100%;
        text-align: left;
        border-bottom: 1px solid var(--border);
    }

    .nav-links > li:first-child {
        border-top: 1px solid var(--border);
    }

    .nav-links > li > a {
        font-size: 1.15rem;
        font-weight: 600;
        padding: 18px 0;
        color: var(--white);
        justify-content: space-between;
        letter-spacing: -0.02em;
    }

    /* Enquire CTA — styled as button at bottom */
    .nav-links > li:last-child {
        border-bottom: none;
        margin-top: 24px;
    }

    .nav-link-cta {
        display: flex !important;
        font-size: 0.9rem !important;
        font-weight: 600 !important;
        color: var(--white) !important;
        background: var(--blue-600) !important;
        padding: 16px 28px !important;
        justify-content: center !important;
        letter-spacing: -0.01em;
    }

    /* Mobile nav footer — phone + address */
    .nav-links::after {
        content: '01476 383 189  ·  Grantham, Lincolnshire';
        display: block;
        margin-top: auto;
        padding-top: 32px;
        font-size: 0.78rem;
        font-weight: 500;
        color: var(--slate-600);
        letter-spacing: 0.01em;
        text-align: center;
    }

    .nav-cta { display: none !important; }
    .nav-phone { display: none !important; }

    .nav-phone-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        color: var(--slate-300);
        z-index: 1001;
        margin-left: auto;
        transition: color 0.2s var(--ease);
    }
    .nav-phone-mobile:active {
        color: var(--blue-400);
    }

    .nav-toggle { display: flex; margin-left: 4px; }

    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* ── Mobile mega menus — accordion ── */
    .has-mega > a .nav-chevron {
        opacity: 0.5;
        transition: transform 0.3s var(--ease), opacity 0.3s;
    }

    .has-mega.mega-open > a .nav-chevron {
        transform: rotate(180deg);
        opacity: 1;
        color: var(--blue-400);
    }

    .mega-panel {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s var(--ease);
        pointer-events: auto;
    }

    .has-mega.mega-open .mega-panel {
        max-height: 600px;
    }

    .mega-inner {
        grid-template-columns: 1fr;
        padding: 4px 0 12px;
        gap: 0;
    }

    .mega-heading {
        display: block;
        font-size: 0.65rem;
        margin-bottom: 12px;
        padding-left: 16px;
        color: var(--slate-600);
    }

    .mega-cta-col {
        display: none;
    }

    .mega-item {
        margin-left: 0;
        padding: 11px 16px;
        border-left: 2px solid var(--border);
        justify-content: flex-start;
        text-align: left;
        gap: 12px;
        transition: border-color 0.2s, background 0.2s;
    }

    .mega-item:active {
        border-left-color: var(--blue-500);
        background: rgba(59, 130, 246, 0.04);
    }

    .mega-item-num {
        display: block;
        font-size: 0.7rem;
        color: var(--blue-500);
        min-width: 18px;
        font-weight: 700;
    }

    .mega-item strong {
        font-size: 0.88rem;
        font-weight: 500;
        color: var(--slate-300);
    }

    .mega-item span {
        display: none;
    }

    .mega-item:hover {
        background: transparent;
        border-left-color: var(--border);
    }

    .mega-item:hover strong {
        color: var(--white);
    }

    .mega-backdrop {
        display: none;
    }

    .hero { padding: 100px 0 60px; }

    .service-card {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 28px 24px;
    }

    .service-number { margin-bottom: 4px; }

    .service-link {
        opacity: 1;
        transform: none;
        margin-top: 12px;
    }

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

    .showcase-item {
        aspect-ratio: 3 / 2;
    }

    .showcase-caption {
        transform: translateY(0);
    }

    .clients-strip {
        padding: 40px 0;
    }

    .clients-strip-header {
        margin-bottom: 24px;
    }

    .clients-track {
        gap: 48px;
        animation-duration: 25s;
    }

    .clients-track img {
        height: 34px;
        max-width: 130px;
    }

    .clients-track-wrapper::before,
    .clients-track-wrapper::after {
        width: 60px;
    }

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

    .approach-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .approach-image {
        aspect-ratio: 16 / 9;
        max-height: 280px;
    }

    .approach-standards {
        flex-direction: column;
        gap: 12px;
    }

    .cta-inner {
        flex-direction: column;
        text-align: center;
    }

    .contact-form-wrap {
        padding: 28px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }

    .lightbox-nav { display: none; }

    .lightbox-close {
        top: 16px;
        right: 16px;
    }
}