:root {
    --oxford-navy: #0A192F;
    --sterling-silver: #E3E4E6;
    --accent-glow: rgba(227, 228, 230, 0.15);
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--oxford-navy);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
    line-height: 1.6;
}

#neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    /* Fallback gradient if JS fails/loads late */
    background: radial-gradient(circle at 50% 50%, #112240 0%, #0A192F 100%);
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(10, 25, 47, 0.8) 100%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--sterling-silver);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #FFFFFF;
}

.nav-cta {
    border: 1px solid rgba(227, 228, 230, 0.5);
    padding: 0.5rem 1.5rem;
    border-radius: 2px;
}

.nav-cta:hover {
    background: rgba(227, 228, 230, 0.1);
    border-color: #FFFFFF;
}

/* Header */
header {
    padding: 2rem 0;
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 10;
}

/* Logo Styles */
.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 60px;
    height: 60px;
    filter: drop-shadow(0 0 5px rgba(227, 228, 230, 0.3));
    /* Adapted for existing theme color */
    stroke: var(--sterling-silver);
    stroke-width: 1.5;
    fill: var(--sterling-silver);
}

.connections line {
    stroke: var(--sterling-silver);
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.6;
    }
}


/* Utility & Layout */
.section-padding {
    padding: 6rem 0;
}

.bg-darker {
    background-color: #050C17;
    /* Deeper shade than custom property */
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 4rem;
}

.mt-2 {
    margin-top: 1rem;
}

.highlight-text {
    color: #8892b0;
    font-style: italic;
    font-weight: 300;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    margin-bottom: 4rem;
    color: var(--sterling-silver);
}

/* Trust Signals */
.trust-signals {
    padding: 3rem 0;
    border-bottom: 1px solid rgba(227, 228, 230, 0.1);
    background: rgba(10, 25, 47, 0.7);
    /* Slightly transparent */
    backdrop-filter: blur(10px);
}

.trust-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    align-items: center;
    gap: 2rem;
}

.signal {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signal-number {
    font-family: var(--font-sans);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--sterling-silver);
    display: block;
}

.signal-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.signal-label {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.signal-desc {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
    max-width: 280px;
    line-height: 1.5;
    opacity: 0.7;
    font-weight: 300;
}

/* Cards (Services & Industries) */
.card {
    padding: 2.5rem;
    border: 1px solid rgba(227, 228, 230, 0.1);
    transition: all 0.4s ease;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
}

.card:hover {
    border-color: rgba(227, 228, 230, 0.3);
    transform: translateY(-5px);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--sterling-silver);
}

.card-text {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* Methodology */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(227, 228, 230, 0.2);
    z-index: 0;
    display: none;
    /* Hidden on mobile, shown on lg screens logic usually */
}

@media (min-width: 1024px) {
    .process-grid::before {
        display: block;
    }
}

.process-step {
    background: var(--oxford-navy);
    /* To cover the line */
    position: relative;
    z-index: 1;
    padding-right: 1rem;
}

.step-number {
    display: block;
    font-family: var(--font-sans);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(227, 228, 230, 0.1);
    margin-bottom: 1rem;
}

.step-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--sterling-silver);
    margin-bottom: 0.5rem;
}

.step-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Insights */
.article-preview {
    border-bottom: 1px solid rgba(227, 228, 230, 0.1);
    padding-bottom: 2rem;
}

.article-date {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: #8892b0;
    display: block;
    margin-bottom: 1rem;
}

.article-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.read-more {
    color: var(--sterling-silver);
    text-decoration: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: margin-left 0.3s ease;
}

.read-more:hover {
    margin-left: 10px;
}

/* Footer */
footer {
    background-color: #02060b;
    padding: 6rem 0 2rem;
    color: var(--text-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--sterling-silver);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.footer-desc {
    font-size: 0.9rem;
    max-width: 300px;
    margin-bottom: 2rem;
}

.footer-col h4 {
    font-family: var(--font-serif);
    color: var(--sterling-silver);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-col p,
.footer-col a {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-col a:hover {
    color: var(--text-primary);
}

.label {
    font-size: 0.75rem;
    text-transform: uppercase;
    opacity: 0.6;
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.5;
}

/* Responsive Grid Adjustments */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

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

    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-title {
        font-size: 2.25rem;
    }
}

.logo-text-group {
    display: flex;
    flex-direction: column;
}

.logo-main {
    line-height: 1;
    margin-bottom: 0.2rem;
}

.logo-sidere {
    font-family: var(--font-serif);
    font-weight: 700;
    /* Bold Serif */
    font-size: 2.2rem;
    color: var(--sterling-silver);
    /* Using site theme color, adapting from dark blue in image for dark mode context */
    letter-spacing: -0.02em;
}

.logo-ai {
    font-family: var(--font-sans);
    font-weight: 200;
    /* Ultra Light */
    font-size: 2.2rem;
    /* Match size visually */
    color: #A0A0A0;
    /* Distinct silver/grey */
    margin-left: 2px;
    letter-spacing: 0.05em;
}

.logo-tagline {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    /* Wider tracking */
    color: var(--sterling-silver);
    text-transform: uppercase;
    opacity: 0.8;
    margin-top: -4px;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    /* Left-aligned for professional look */
    position: relative;
    color: var(--sterling-silver);
}

.hero-content {
    max-width: 800px;
    animation: fadeIn 1.5s ease-out forwards;
    opacity: 0;
    /* JS or Animation will reveal */
}

.headline {
    font-family: var(--font-serif);
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
    /* Regular weight for elegance */
    color: var(--text-primary);
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.headline .highlight {
    font-style: italic;
    background: linear-gradient(90deg, #E3E4E6, #A0A0A0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    /* Ensure gradient applies correctly */
}

.subtext {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    letter-spacing: 0.02em;
}

/* Luxury Button */
.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    border: 1px solid var(--sterling-silver);
    color: var(--sterling-silver);
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
    background: transparent;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: var(--sterling-silver);
    transition: width 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    z-index: -1;
}

.cta-button:hover {
    color: var(--oxford-navy);
}

.cta-button:hover::before {
    width: 100%;
}

/* Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .headline {
        font-size: 3rem;
    }

    .hero-section {
        justify-content: center;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .subtext {
        margin-left: auto;
        margin-right: auto;
    }
}

/* Article Pages */
.article-wrapper {
    padding-top: 4rem;
    /* Space below header */
    padding-bottom: 6rem;
    background-color: var(--oxford-navy);
}

.article-content {
    max-width: 740px;
    /* Optimal reading width */
    margin: 0 auto;
    padding: 0 1.5rem;
}

.article-meta {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #8892b0;
    margin-bottom: 1.5rem;
    border-left: 2px solid var(--sterling-silver);
    padding-left: 1rem;
}

.article-headline {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 3rem;
}

.article-body {
    font-family: var(--font-sans);
    /* Or a very readable serif */
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.article-body p.lead {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    line-height: 1.5;
    color: var(--sterling-silver);
    margin-bottom: 2.5rem;
    border-bottom: 1px solid rgba(227, 228, 230, 0.1);
    padding-bottom: 2rem;
}

.article-body h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--sterling-silver);
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.article-body h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--sterling-silver);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body ul {
    margin-bottom: 2rem;
    padding-left: 1.5rem;
    list-style-type: none;
    /* Custom bullet */
}

.article-body li {
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.5rem;
}

.article-body li::before {
    content: '—';
    /* Em dash as bullet */
    position: absolute;
    left: 0;
    color: var(--sterling-silver);
}

.article-body blockquote {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.4rem;
    color: var(--sterling-silver);
    border-left: 3px solid var(--sterling-silver);
    padding: 1rem 2rem;
    margin: 3rem 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
}

.article-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(227, 228, 230, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #8892b0;
}

.back-link {
    color: var(--sterling-silver);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: margin-right 0.3s;
}

.back-link:hover {
    color: #fff;
    margin-right: 5px;
}

/* Specific Logo Adjustment for Article Header */
.logo-container a:hover .logo-text-group {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .article-headline {
        font-size: 2.5rem;
    }

    .article-body p.lead {
        font-size: 1.25rem;
    }
}

/* Floating Action Buttons */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 20px;
    left: 20px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background-color: #20b858;
    color: #FFF;
}

.whatsapp-icon {
    width: 35px;
    height: 35px;
    fill: currentColor;
}

.scroll-top-btn {
    position: fixed;
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    background-color: rgba(227, 228, 230, 0.1);
    color: var(--sterling-silver);
    border: 1px solid rgba(227, 228, 230, 0.3);
    border-radius: 50px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    backdrop-filter: blur(5px);
}

.scroll-top-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

.scroll-top-btn:hover {
    background-color: var(--sterling-silver);
    color: var(--oxford-navy);
}

.scroll-top-icon {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}