:root {
    /* Colors - Primary */
    --color-dark-navy: #0A1628;
    --color-navy: #1A2744;

    /* Colors - Secondary */
    --color-silver: #C0C5CE;
    --color-light-silver: #E8EAED;

    /* Colors - Neutral */
    --color-white: #FFFFFF;
    --color-off-white: #F8F9FA;
    --color-text-dark: #1A2744;
    --color-text-muted: #6B7280;

    /* Typography */
    --font-heading: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;

    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;

    /* Fluid Typography Sizes */
    --text-hero-headline: clamp(2.5rem, 5vw, 4rem);
    --text-section-headline: clamp(1.75rem, 3vw, 2.5rem);
    --text-subheadline: clamp(1rem, 2vw, 1.25rem);
    --text-body: 1rem;
    --text-small: 0.875rem;

    /* Spacing */
    --section-padding-y: clamp(80px, 10vw, 140px);
    --container-padding-x: clamp(24px, 5vw, 48px);
    --container-max-width: 1200px;

    /* Visual Styles */
    --border-radius-sm: 2px;
    --border-radius-md: 4px;
    --shadow-card: 0 1px 3px rgba(10, 22, 40, 0.08);
    --transition-default: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    line-height: 1.6;
    background-color: var(--color-white);
}

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

a {
    text-decoration: none;
    color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-weight: var(--font-weight-medium);
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: var(--container-padding-x);
    padding-right: var(--container-padding-x);
}

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

.section-padding {
    padding-top: var(--section-padding-y);
    padding-bottom: var(--section-padding-y);
}

.uppercase-label {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: var(--text-small);
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    display: block;
}

/* Components */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: var(--border-radius-sm);
    font-weight: var(--font-weight-medium);
    transition: opacity var(--transition-default);
    cursor: pointer;
    border: none;
}

.btn:hover {
    opacity: 0.9;
}

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

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--color-silver);
    color: var(--color-text-dark);
}

.btn-submit {
    background-color: var(--color-white);
    color: var(--color-dark-navy);
}

/* Section Specifics */

/* Hero */
#hero {
    background-color: var(--color-dark-navy);
    color: var(--color-white);
    min-height: 100vh;
    /* Fallback */
    min-height: 100svh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: var(--text-hero-headline);
    margin-bottom: 1.5rem;
    font-weight: var(--font-weight-semibold);
}

.hero-content p {
    font-size: var(--text-subheadline);
    color: var(--color-silver);
    margin-bottom: 3rem;
    max-width: 640px;
    line-height: 1.6;
}

/* Abstract Shape (Pure CSS) */
.abstract-shape {
    position: absolute;
    bottom: -10%;
    right: -5%;
    width: 40vw;
    height: 40vw;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.abstract-shape::before {
    content: '';
    position: absolute;
    inset: 20%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

/* Industries */
#industries {
    background-color: var(--color-white);
}

.industries-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .industries-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.industry-item {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-dark-navy);
    padding: 1rem 0;
    border-top: 1px solid var(--color-light-silver);
}

/* Capabilities */
#capabilities {
    background-color: var(--color-off-white);
}

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

@media (min-width: 640px) {
    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .capabilities-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.capability-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: 32px;
    border: 1px solid var(--color-light-silver);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease;
}

.capability-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(10, 22, 40, 0.05);
}

.capability-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-dark-navy);
    font-weight: var(--font-weight-semibold);
}

.capability-intro {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.capability-card ul li {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    position: relative;
    line-height: 1.5;
}

.capability-card ul li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--color-silver);
}

/* Approach */
#approach {
    background-color: var(--color-white);
}

.approach-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto 3rem auto;
    line-height: 1.7;
}

.approach-steps {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    /* Increased gap */
}

.step-item {
    flex: 1;
    text-align: center;
    /* Center align on all devices */
    padding: 0 1rem;
}

.step-number {
    font-size: 4rem;
    /* Larger */
    color: var(--color-light-silver);
    /* Lighter for background feel */
    font-weight: var(--font-weight-semibold);
    display: block;
    line-height: 1;
    margin-bottom: 1rem;
}

.step-item h3 {
    font-size: 1.75rem;
    color: var(--color-dark-navy);
    margin-bottom: 1rem;
}

.step-item p {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 320px;
    /* Limit width for readability */
    margin: 0 auto;
}

@media (min-width: 768px) {
    .approach-steps {
        flex-direction: row;
        justify-content: space-between;
        gap: 2rem;
    }

    .step-item {
        position: relative;
    }

    /* Optional: Connector line for desktop */
    .step-item:not(:last-child)::after {
        content: '';
        position: absolute;
        top: 2rem;
        right: -1rem;
        width: 2rem;
        height: 1px;
        background-color: var(--color-light-silver);
        display: none;
        /* Hidden for now, can enable if needed */
    }
}

.approach-tagline {
    text-align: center;
    margin-top: 5rem;
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-style: italic;
    color: var(--color-dark-navy);
    /* Darker for better contrast */
    font-weight: var(--font-weight-medium);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Positioning */
#positioning {
    background-color: var(--color-off-white);
    border-top: 1px solid var(--color-light-silver);
    border-bottom: 1px solid var(--color-light-silver);
}

.positioning-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text-dark);
}

.positioning-subtext {
    text-align: center;
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.positioning-list {
    max-width: 400px;
    margin: 0 auto;
    text-align: center;
}

.positioning-list li {
    font-size: 1rem;
    color: var(--color-text-dark);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-light-silver);
}

.positioning-list li:last-child {
    border-bottom: none;
}

/* Contact */
#contact {
    background-color: var(--color-dark-navy);
    color: var(--color-white);
    text-align: center;
}

#contact h2 {
    font-size: var(--text-section-headline);
    margin-bottom: 1rem;
    color: var(--color-white);
}

#contact p {
    color: var(--color-silver);
    max-width: 560px;
    margin: 0 auto 3rem auto;
}

.contact-form {
    max-width: 480px;
    margin: 0 auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: var(--text-small);
    color: var(--color-silver);
}

.form-control,
textarea {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    padding: 14px 16px;
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-control:focus,
textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.3);
}

/* Footer */
footer {
    background-color: var(--color-dark-navy);
    color: var(--color-text-muted);
    font-size: var(--text-small);
    padding: 24px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Animation utilities */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    will-change: opacity, visibility;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
}

/* Premium Visual Upgrades */
#hero {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    /* Ensure text is readable over image */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.96) 0%, rgba(10, 22, 40, 0.85) 60%, rgba(10, 22, 40, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.capability-card {
    padding: 0;
    /* Reset for image */
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-image-wrapper {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.capability-card:hover .card-image-wrapper img {
    transform: scale(1.05);
}

.card-content {
    padding: 32px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    margin-top: 0;
}

/* Enhancements */
.btn {
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-size: 0.875rem;
    padding: 18px 36px;
}