/* ============================================================
   OTx Systems — 2026 Design System
   Brand: Burnt Orange #D35400 | Accent Green #B1D727
          Dark Grey #4A4A4A    | Light Grey #A8A8A8
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
    /* Brand */
    --orange:        #D35400;
    --orange-light:  #E8651A;
    --orange-dim:    rgba(211, 84, 0, 0.15);
    --green:         #B1D727;
    --green-light:   #C8EA40;
    --green-dim:     rgba(177, 215, 39, 0.12);
    --grey-dark:     #4A4A4A;
    --grey-light:    #A8A8A8;

    /* Backgrounds */
    --bg-base:       #111113;
    --bg-surface:    #17171A;
    --bg-raised:     #1E1E22;
    --bg-card:       #232328;
    --bg-card-hover: #29292F;

    /* Text */
    --text-primary:   #F2F2F4;
    --text-secondary: #A8A8A8;
    --text-muted:     #666670;

    /* Borders */
    --border-subtle:  rgba(255,255,255,0.06);
    --border-default: rgba(255,255,255,0.10);
    --border-strong:  rgba(255,255,255,0.16);

    /* Shadows */
    --shadow-sm:  0 1px 4px  rgba(0,0,0,0.35);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.45);
    --shadow-lg:  0 10px 40px rgba(0,0,0,0.55);
    --glow-green: 0 0 24px rgba(177,215,39,0.22);
    --glow-orange:0 0 24px rgba(211,84,0,0.22);

    /* Transitions */
    --ease-fast:  0.15s cubic-bezier(0.4,0,0.2,1);
    --ease-base:  0.28s cubic-bezier(0.4,0,0.2,1);
    --ease-slow:  0.5s  cubic-bezier(0.4,0,0.2,1);

    /* Radius */
    --r-sm:   8px;
    --r-md:   12px;
    --r-lg:   16px;
    --r-xl:   24px;
    --r-full: 9999px;

    /* Layout */
    --max-w: 1200px;
    --nav-h: 68px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-base);
    color: var(--text-secondary);
    line-height: 1.65;
    overflow-x: hidden;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevent content shift on scroll bar appear/disappear (Windows) */
    scrollbar-gutter: stable;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: var(--green); text-decoration: none; transition: color var(--ease-fast); }
a:hover { color: var(--green-light); }
ul { list-style: none; }

/* Remove iOS/Android blue tap flash on interactive elements */
a, button, input, select, textarea, label,
.btn, .nav-link, .hamburger, .marquee-card,
.scroll-top, .scroll-down, .value-card, .service-card {
    -webkit-tap-highlight-color: transparent;
}

/* Remove 300ms tap delay on touch devices (legacy Android) */
a, button, .btn, .nav-link, .hamburger,
.scroll-top, .scroll-down, .marquee-card {
    touch-action: manipulation;
}

:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ---- Typography ---- */
h1,h2,h3,h4,h5,h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: 1.1rem; }
h5 { font-size: 0.95rem; font-weight: 600; }

p { margin-bottom: 1rem; }

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}
.section-eyebrow {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 0.75rem;
}
.section-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-top: 0.4rem;
    margin-bottom: 0;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border-radius: var(--r-full);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: transform var(--ease-base), box-shadow var(--ease-base), background var(--ease-base);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--green) 0%, #8DB820 100%);
    color: #0E0E10;
    box-shadow: 0 6px 22px rgba(177,215,39,0.28);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(177,215,39,0.38);
    color: #0E0E10;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-strong);
}
.btn-outline:hover {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-dim);
    transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }
.btn-icon { flex-shrink: 0; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    height: var(--nav-h);
    background: rgba(17,17,19,0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--ease-base), box-shadow var(--ease-base);
}
.navbar.scrolled {
    background: rgba(17,17,19,0.97);
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.nav-container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}
.nav-logo:hover { color: var(--text-primary); }
.logo-img  { height: 38px; width: auto; }
.logo-text { line-height: 1; }
.logo-x { color: var(--orange); }
.logo-accent {
    display: block;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.45rem 0.9rem;
    border-radius: var(--r-sm);
    transition: color var(--ease-fast), background var(--ease-fast);
    position: relative;
}
.nav-link:hover {
    color: var(--text-primary);
    background: var(--border-subtle);
}
.nav-link.active { color: var(--green); }

.nav-cta {
    background: linear-gradient(135deg, var(--green), #8DB820);
    color: #0E0E10 !important;
    padding: 0.55rem 1.25rem;
    margin-left: 0.5rem;
    font-weight: 700;
    border-radius: var(--r-full);
}
.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(177,215,39,0.3);
    background: linear-gradient(135deg, var(--green-light), var(--green));
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 6px;
    border-radius: var(--r-sm);
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: var(--ease-base);
    transform-origin: center;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;       /* fallback for older browsers */
    min-height: 100svh;      /* iOS 15.4+, Chrome 108+ small viewport height */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-h) + 60px) 24px 80px;
    overflow: hidden;
    background: var(--bg-base);
}

/* Dot-grid background */
.hero-bg-dots {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(177,215,39,0.13) 1px, transparent 1px);
    background-size: 38px 38px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

/* Ambient glows */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
}
.hero-glow--orange {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(211,84,0,0.18), transparent 70%);
    top: -10%; right: -5%;
    animation: glowDrift 20s ease-in-out infinite;
    will-change: transform;
}
.hero-glow--green {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(177,215,39,0.12), transparent 70%);
    bottom: -10%; left: -5%;
    animation: glowDrift 25s ease-in-out infinite reverse;
    will-change: transform;
}

@keyframes glowDrift {
    0%,100% { transform: translate(0,0); }
    33%      { transform: translate(30px, -20px); }
    66%      { transform: translate(-20px, 30px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--max-w);
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

/* Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(177,215,39,0.08);
    border: 1px solid rgba(177,215,39,0.25);
    color: var(--green);
    padding: 0.4rem 1rem;
    border-radius: var(--r-full);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 1.5rem;
}
.badge-pulse {
    width: 7px; height: 7px;
    background: var(--green);
    border-radius: 50%;
    animation: badgePulse 2.2s ease-in-out infinite;
}
@keyframes badgePulse {
    0%,100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.5; transform: scale(0.7); }
}

/* Hero title */
.hero-title {
    margin-bottom: 1.5rem;
    line-height: 1.15;
}
.text-white    { display: block; color: var(--text-primary); }
.text-gradient {
    display: block;
    background: linear-gradient(135deg, var(--green) 0%, var(--orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.text-green { display: block; color: var(--green); }

.hero-description {
    font-size: 1.08rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2.25rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* SVG diagram container */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}
.network-svg {
    width: 100%;
    max-width: 460px;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(177,215,39,0.08));
}

/* Animated connection lines */
.conn-line          { animation: dashFlow 2s linear infinite; }
.conn-line--orange  { animation: dashFlow 2s linear infinite reverse; }
@keyframes dashFlow {
    to { stroke-dashoffset: -22; }
}

/* Scroll-down indicator */
.scroll-down {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-default);
    animation: scrollBounce 2.5s ease-in-out infinite;
    transition: color var(--ease-fast), border-color var(--ease-fast);
    z-index: 3;
}
.scroll-down:hover {
    color: var(--green);
    border-color: var(--green);
}
@keyframes scrollBounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(7px); }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
    padding: 110px 0;
    background: var(--bg-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
    margin-bottom: 80px;
}

.about-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 2rem;
}

.about-heading {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 1rem;
    margin-top: 1.75rem;
}
.about-heading:first-of-type { margin-top: 0; }

.expertise-list {
    margin-bottom: 1.75rem;
}
.expertise-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}
.expertise-list li:last-child { border-bottom: none; }
.check-icon { color: var(--green); flex-shrink: 0; }

/* Image panel */
.about-image-wrap {
    position: relative;
}
.about-image-frame {
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border-default);
    background: var(--bg-card);
    position: relative;
    /* aspect-ratio fallback for older Android WebView */
    padding-bottom: 75%; /* 4:3 ratio */
    height: 0;
}
@supports (aspect-ratio: 4/3) {
    .about-image-frame {
        aspect-ratio: 4/3;
        padding-bottom: 0;
        height: auto;
    }
}
.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.85;
    transition: opacity var(--ease-slow);
    /* Fill frame when using padding-bottom fallback */
    position: absolute;
    top: 0; left: 0;
}
@supports (aspect-ratio: 4/3) {
    .about-img { position: static; }
}
.about-img:hover { opacity: 1; }
.about-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(17,17,19,0.6) 100%);
    pointer-events: none;
}

/* Floating stat pills */
.about-stat-pill {
    position: absolute;
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 0.85rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-md);
}
.about-stat-pill--tl { top: -18px; left: -18px; }
.about-stat-pill--br { bottom: -18px; right: -18px; }
.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--green);
    line-height: 1;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Value cards */
.about-values {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 1.5rem;
}
.value-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 2rem 1.75rem;
    transition: transform var(--ease-base), border-color var(--ease-base), box-shadow var(--ease-base);
}
.value-card:hover {
    transform: translateY(-5px);
    border-color: rgba(177,215,39,0.35);
    box-shadow: var(--glow-green), var(--shadow-md);
}
.value-icon-wrap {
    width: 52px; height: 52px;
    border-radius: var(--r-md);
    background: var(--green-dim);
    border: 1px solid rgba(177,215,39,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    margin-bottom: 1.25rem;
}
.value-icon-wrap--orange {
    background: var(--orange-dim);
    border-color: rgba(211,84,0,0.2);
    color: var(--orange);
}
.value-card h4 { margin-bottom: 0.6rem; font-size: 1rem; }
.value-card p  { margin: 0; font-size: 0.9rem; line-height: 1.6; }

/* ============================================================
   SERVICES
   ============================================================ */
.services {
    padding: 110px 0;
    background: var(--bg-base);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 2rem 1.75rem;
    position: relative;
    overflow: hidden;
    transition: transform var(--ease-base), border-color var(--ease-base), box-shadow var(--ease-base);
}
.service-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--green), var(--orange));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--ease-base);
    border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(177,215,39,0.3);
    box-shadow: var(--glow-green), var(--shadow-lg);
}
.service-card:hover::after { transform: scaleX(1); }

.service-icon-wrap {
    width: 56px; height: 56px;
    border-radius: var(--r-md);
    background: var(--green-dim);
    border: 1px solid rgba(177,215,39,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    margin-bottom: 1.25rem;
}
.service-icon-wrap--orange {
    background: var(--orange-dim);
    border-color: rgba(211,84,0,0.2);
    color: var(--orange);
}
.service-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.6rem;
}
.service-card > p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    color: var(--text-muted);
}
.service-list {
    padding-top: 1rem;
    border-top: 1px solid var(--border-subtle);
}
.service-list li {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 0.35rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.service-list li::before {
    content: '';
    width: 5px; height: 5px;
    background: var(--green);
    border-radius: 50%;
    flex-shrink: 0;
    opacity: 0.7;
}

/* ============================================================
   TRUST STATS
   ============================================================ */
.trust {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(177,215,39,0.04), rgba(211,84,0,0.04));
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}
.trust-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 2rem;
}
.trust-item {
    text-align: center;
    padding: 1rem;
}
.trust-number {
    display: block;
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--green);
    letter-spacing: -0.03em;
    margin-bottom: 0.4rem;
    line-height: 1;
}
.trust-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ============================================================
   PROJECTS (Active & Completed rolling section)
   ============================================================ */
.projects-section {
    padding: 100px 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}
.projects-sub {
    margin-top: 2.75rem;
}
.projects-sub + .projects-sub {
    margin-top: 2.5rem;
}
.projects-sub-label {
    text-align: center;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}
.projects-sub-label::before,
.projects-sub-label::after {
    content: '';
    height: 1px;
    width: 50px;
    background: currentColor;
    opacity: 0.25;
}
.projects-sub-label--completed { color: var(--green); }
.projects-sub-label--active    { color: var(--orange); }

.project-marquee-outer {
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
    padding: 0.5rem 0;
}
.project-marquee-track {
    display: flex;
    gap: 1.25rem;
    width: max-content;
    animation: marqueeScroll 25s linear infinite;
    will-change: transform;
}
.project-marquee-track--reverse {
    animation: marqueeScroll 25s linear infinite reverse;
}
.project-marquee-outer:hover .project-marquee-track,
.project-marquee-outer:focus-within .project-marquee-track {
    animation-play-state: paused;
}

.project-card {
    flex-shrink: 0;
    width: 300px;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    text-decoration: none;
    color: inherit;
    cursor: default;
    transition: border-color var(--ease-fast), transform var(--ease-fast), box-shadow var(--ease-fast);
}
.project-card--completed:hover {
    border-color: rgba(177,215,39,0.4);
    transform: translateY(-4px);
    box-shadow: var(--glow-green), var(--shadow-md);
}
.project-card--active:hover {
    border-color: rgba(211,84,0,0.4);
    transform: translateY(-4px);
    box-shadow: var(--glow-orange), var(--shadow-md);
}

.project-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.22rem 0.65rem;
    border-radius: var(--r-full);
    width: fit-content;
}
.project-badge--completed {
    background: rgba(177,215,39,0.1);
    color: var(--green);
    border: 1px solid rgba(177,215,39,0.28);
}
.project-badge--active {
    background: rgba(211,84,0,0.1);
    color: var(--orange);
    border: 1px solid rgba(211,84,0,0.28);
}
.project-badge--active::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--orange);
    animation: projectPulse 1.6s ease-in-out infinite;
}
@keyframes projectPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.35; transform: scale(0.7); }
}

.project-name {
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}
.project-sector {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* ============================================================
   TECHNOLOGY ECOSYSTEM (Wheel & Spoke)
   ============================================================ */
.tech-ecosystem {
    padding: 100px 0;
    background: var(--bg-raised);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

/* Wheel container — square, centered */
.tech-wheel-wrap {
    position: relative;
    width: 840px;
    height: 840px;
    margin: 3.5rem auto 0;
}
.tech-wheel-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Hub */
.tech-hub {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 112px;
    height: 112px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-strong);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    z-index: 3;
    box-shadow: 0 0 0 10px rgba(255,255,255,0.025), var(--shadow-md);
}
.tech-hub-logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
}
.tech-hub-label {
    font-size: 0.56rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    line-height: 1;
}

/* Spoke node cards */
.tech-node {
    position: absolute;
    transform: translate(-50%, -50%);
    width: 182px;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 0.8rem;
    z-index: 2;
    transition: border-color var(--ease-fast), box-shadow var(--ease-fast), transform var(--ease-fast);
}
.tech-node:hover { transform: translate(-50%, -50%) scale(1.04); }
.tech-node--plc:hover        { border-color: rgba(211,84,0,0.5);    box-shadow: 0 0 22px rgba(211,84,0,0.14), var(--shadow-md); }
.tech-node--scada:hover      { border-color: rgba(177,215,39,0.5);  box-shadow: 0 0 22px rgba(177,215,39,0.14), var(--shadow-md); }
.tech-node--data:hover       { border-color: rgba(90,160,220,0.5);  box-shadow: 0 0 22px rgba(90,160,220,0.14), var(--shadow-md); }
.tech-node--network:hover    { border-color: rgba(0,168,204,0.5);   box-shadow: 0 0 22px rgba(0,168,204,0.14), var(--shadow-md); }
.tech-node--itot:hover       { border-color: rgba(180,100,220,0.5); box-shadow: 0 0 22px rgba(180,100,220,0.14), var(--shadow-md); }
.tech-node--electrical:hover { border-color: rgba(255,200,50,0.5);  box-shadow: 0 0 22px rgba(255,200,50,0.14), var(--shadow-md); }

.tech-node-header {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 0.65rem;
    padding-bottom: 0.55rem;
    border-bottom: 1px solid var(--border-subtle);
}
.tech-node-icon {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    flex-shrink: 0;
}
.tech-node-title {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Category colour theming */
.tech-node--plc        .tech-node-icon  { background: rgba(211,84,0,0.15);    color: var(--orange); }
.tech-node--plc        .tech-node-title { color: var(--orange); }
.tech-node--scada      .tech-node-icon  { background: rgba(177,215,39,0.12);  color: var(--green); }
.tech-node--scada      .tech-node-title { color: var(--green); }
.tech-node--data       .tech-node-icon  { background: rgba(90,160,220,0.12);  color: #5AA0DC; }
.tech-node--data       .tech-node-title { color: #5AA0DC; }
.tech-node--network    .tech-node-icon  { background: rgba(0,168,204,0.12);   color: #00A8CC; }
.tech-node--network    .tech-node-title { color: #00A8CC; }
.tech-node--itot       .tech-node-icon  { background: rgba(180,100,220,0.12); color: #B464DC; }
.tech-node--itot       .tech-node-title { color: #B464DC; }
.tech-node--electrical .tech-node-icon  { background: rgba(255,200,50,0.12);  color: #FFC832; }
.tech-node--electrical .tech-node-title { color: #FFC832; }

/* Category illustration image at top of each node */
.tech-node-image {
    height: 68px;
    margin: -0.8rem -0.8rem 0.75rem;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    background-size: cover;
    background-position: center;
    background-color: var(--bg-raised);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}
.tech-node-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.15) 0%, var(--bg-card) 100%);
}

/* Product rows inside each node */
.tech-products {
    display: flex;
    flex-direction: column;
    gap: 0.42rem;
}
.tech-product {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}
.tech-product-logo {
    width: 34px;
    height: 34px;
    border-radius: 6px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.46rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--text-muted);
    flex-shrink: 0;
    overflow: hidden;
}
.tech-product-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 4px;
    display: block;
}
.tech-product-logo span {
    display: none;      /* shown via onerror when no img available */
    line-height: 1;
    text-align: center;
}
.tech-product-name {
    font-size: 0.71rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

/* Mobile: hide wheel, show flat grid */
.tech-grid-mobile {
    display: none;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2.5rem;
}
.tech-grid-mobile .tech-node {
    position: static;
    transform: none;
    width: 100%;
}
.tech-grid-mobile .tech-node:hover { transform: translateY(-3px); }

@media (max-width: 780px) {
    .tech-wheel-wrap  { display: none; }
    .tech-grid-mobile { display: grid; }
}
@media (max-width: 480px) {
    .tech-grid-mobile { grid-template-columns: 1fr; }
    .tech-grid-mobile .tech-node--electrical { grid-column: 1; }
}

/* ============================================================
   SITE VERSION STAMP
   ============================================================ */
.site-version {
    display: block;
    text-align: center;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    opacity: 0.45;
    margin-top: 0.4rem;
}

/* ============================================================
   MARQUEE (Clients & Partners)
   ============================================================ */
.clients, .partners {
    padding: 100px 0;
}
.clients  { background: var(--bg-surface); }
.partners { background: var(--bg-base); }

.marquee-outer {
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
    padding: 0.5rem 0;
}
.marquee-outer--reverse {}

.marquee-track {
    display: flex;
    gap: 1.25rem;
    width: max-content;
    animation: marqueeScroll 30s linear infinite;
    will-change: transform;
}
.marquee-track--reverse {
    animation: marqueeScroll 35s linear infinite reverse;
    will-change: transform;
}
.marquee-outer:hover .marquee-track,
.marquee-outer:focus-within .marquee-track {
    animation-play-state: paused;
}

@keyframes marqueeScroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

.marquee-card {
    flex-shrink: 0;
    width: 240px;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 1.25rem 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0;
    transition: border-color var(--ease-fast), transform var(--ease-fast), box-shadow var(--ease-fast);
    color: inherit;
    text-decoration: none;
}
.marquee-card:hover {
    border-color: rgba(211,84,0,0.45);
    transform: translateY(-4px);
    box-shadow: var(--glow-orange), var(--shadow-md);
}
.marquee-card--partner:hover {
    border-color: rgba(177,215,39,0.45);
    box-shadow: var(--glow-green), var(--shadow-md);
}

/* Logo container — white pill so brand colors show on dark bg */
.marquee-logo-wrap {
    width: 100%;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.93);
    border-radius: 8px;
    padding: 8px 14px;
    margin-bottom: 0.9rem;
    overflow: hidden;
}
.marquee-logo {
    max-height: 38px;
    max-width: 148px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}
.marquee-initials {
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    font-weight: 700;
    color: #444;
    letter-spacing: 0.04em;
}

.marquee-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}
.marquee-sector {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: block;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
    padding: 110px 0;
    background: var(--bg-surface);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: start;
}

.contact-form-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-xl);
    padding: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-bottom: 1.25rem;
}
.form-group:last-of-type { margin-bottom: 1.5rem; }

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
}
.required { color: var(--orange); }

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    border-radius: var(--r-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color var(--ease-fast), box-shadow var(--ease-fast), background var(--ease-fast);
    -webkit-appearance: none;
    appearance: none;
}
.form-group select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666670' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}
.form-group select option { background: var(--bg-raised); color: var(--text-primary); }

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(177,215,39,0.12);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-status {
    margin-top: 1rem;
    font-size: 0.88rem;
    min-height: 1.4em;
    text-align: center;
}
.form-status.success { color: var(--green); }
.form-status.error   { color: var(--orange); }

/* Contact info cards */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--r-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: border-color var(--ease-fast), transform var(--ease-fast);
}
.info-card:hover {
    border-color: rgba(177,215,39,0.3);
    transform: translateX(4px);
}
.info-icon {
    width: 42px; height: 42px;
    flex-shrink: 0;
    border-radius: var(--r-sm);
    background: var(--green-dim);
    border: 1px solid rgba(177,215,39,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    margin-top: 2px;
}
.info-card h4 { font-size: 0.9rem; margin-bottom: 0.2rem; }
.info-card p  { margin: 0; font-size: 0.88rem; color: var(--text-muted); }
.info-card a  { font-size: 0.88rem; color: var(--green); }
.info-card a:hover { color: var(--green-light); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--bg-base);
    border-top: 1px solid var(--border-subtle);
    padding: 72px 24px 32px;
}

.footer-content {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}
.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 1rem;
    max-width: 320px;
}
.footer-holding {
    font-size: 0.8rem !important;
    margin-top: 0.5rem !important;
}
.footer-holding a {
    color: var(--orange);
    opacity: 0.85;
}
.footer-holding a:hover { color: var(--orange-light); opacity: 1; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
}
.footer-logo:hover { color: var(--text-primary); }
.footer-logo img { height: 36px; width: auto; }

.footer-links {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 2rem;
}
.footer-col h5 {
    color: var(--text-secondary);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}
.footer-col ul li { margin-bottom: 0.75rem; }
.footer-col a {
    font-size: 0.88rem;
    color: var(--text-muted);
    transition: color var(--ease-fast);
}
.footer-col a:hover { color: var(--green); }

.footer-bottom {
    max-width: var(--max-w);
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-muted);
}
.footer-credit { color: var(--text-muted); opacity: 0.6; }

/* ============================================================
   SCROLL-TO-TOP
   ============================================================ */
.scroll-top {
    position: fixed;
    bottom: 32px;
    bottom: max(32px, calc(20px + env(safe-area-inset-bottom)));
    right: 32px;
    right: max(32px, calc(20px + env(safe-area-inset-right)));
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--ease-base), visibility var(--ease-base),
                transform var(--ease-base), border-color var(--ease-fast),
                color var(--ease-fast), box-shadow var(--ease-fast);
    z-index: 900;
}
.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.scroll-top:hover {
    border-color: var(--green);
    color: var(--green);
    box-shadow: var(--glow-green);
}

/* ============================================================
   CROSS-PLATFORM COMPATIBILITY
   ============================================================ */

/* Fallback for browsers without backdrop-filter (Firefox < 103, older Android) */
@supports not (backdrop-filter: blur(1px)) {
    .navbar { background: rgba(17,17,19,0.97); }
    .navbar.scrolled { background: rgba(17,17,19,0.99); }
    .nav-menu { background: rgba(17,17,19,0.99); }
    .about-stat-pill { background: var(--bg-raised); }
}

/* Navbar safe-area padding for notched phones (landscape) */
.nav-container {
    padding-left: max(24px, calc(24px + env(safe-area-inset-left)));
    padding-right: max(24px, calc(24px + env(safe-area-inset-right)));
}

/* iOS input font-size fix — prevents auto-zoom on focus (iOS zooms when < 16px) */
@media (max-width: 768px) {
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px;
    }
}

/* Windows high-contrast mode support */
@media (forced-colors: active) {
    .btn-primary,
    .nav-cta { border: 2px solid ButtonText; }
    .service-card, .value-card, .info-card { border: 1px solid ButtonText; }
}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — TABLET (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {
    .services-grid   { grid-template-columns: repeat(2,1fr); }
    .about-values    { grid-template-columns: repeat(2,1fr); }
    .trust-grid      { grid-template-columns: repeat(2,1fr); }
    .contact-content { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-content  { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-brand p  { max-width: 100%; }
    .footer-links    { grid-template-columns: repeat(3,1fr); }
}

/* ============================================================
   RESPONSIVE — MOBILE (max 768px)
   ============================================================ */
@media (max-width: 768px) {
    :root { --nav-h: 60px; }

    /* Nav */
    .hamburger { display: flex; }
    .nav-menu {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        padding: 1.5rem 1.25rem;
        /* Safe area bottom padding for notched iPhones */
        padding-bottom: max(1.5rem, calc(1.5rem + env(safe-area-inset-bottom)));
        background: rgba(17,17,19,0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-default);
        gap: 0.25rem;
        transform: translateY(-110%);
        opacity: 0;
        transition: transform var(--ease-base), opacity var(--ease-base);
        pointer-events: none;
    }
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav-link {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        border-radius: var(--r-sm);
    }
    .nav-cta {
        text-align: center;
        margin-left: 0;
        margin-top: 0.5rem;
    }

    /* Hero */
    .hero { padding: calc(var(--nav-h) + 40px) 20px 60px; }
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-visual { order: -1; }
    .network-svg { max-width: 340px; margin: 0 auto; }

    /* About */
    .about-grid         { grid-template-columns: 1fr; gap: 48px; }
    .about-values       { grid-template-columns: 1fr; }
    .about-stat-pill--tl { top: -14px; left: -10px; }
    .about-stat-pill--br { bottom: -14px; right: -10px; }

    /* Services */
    .services-grid { grid-template-columns: 1fr; }

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

    /* Contact */
    .form-row { grid-template-columns: 1fr; }
    .contact-form-wrap { padding: 1.75rem; }

    /* Footer */
    .footer-links   { grid-template-columns: 1fr 1fr; }
    .footer-bottom  { flex-direction: column; text-align: center; }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (max 480px)
   ============================================================ */
@media (max-width: 480px) {
    .about, .services, .contact, .clients, .partners { padding: 72px 0; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .trust-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .scroll-top { bottom: 20px; right: 20px; }
}

/* ============================================================
   ACCESSIBILITY — REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .marquee-track, .marquee-track--reverse { animation: none; }
    html { scroll-behavior: auto; }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
    .navbar, .hero-bg-dots, .hero-glow,
    .scroll-down, .scroll-top, .marquee-outer { display: none !important; }
    body  { background: white; color: black; }
    .hero { min-height: auto; padding: 2rem 0; }
}