:root {
    --primary: #0A2342;
    --primary-light: #E8F1FF;
    --accent: #2563EB;
    --text: #1F2933;
    --muted: #6B7280;
    --border: #E5E7EB;
    --bg: #F3F4F6;
    --white: #FFFFFF;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

/* Global link reset – remove default underlines */
a {
    text-decoration: none;
    color: inherit;
}

p {
    text-align: left;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 4rem 0;
    background: var(--white);
}

.section-muted {
    padding: 4rem 0;
    background: #F9FAFB;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin: 0 0 0.75rem;
}

.section-intro {
    max-width: 640px;
    margin: 0 auto 2.5rem;
    text-align: center;
    color: var(--muted);
}

.narrow {
    max-width: 720px;
}

/* Header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.45rem 1.5rem;
    gap: 1.5rem;
}

.logo-link {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 64px;
    width: auto;
    display: block;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;          /* a bit more space between items */
    font-size: 0.95rem;
    flex: 1;              /* let nav stretch between logo and Contact */
    justify-content: center;
}

.main-nav a {
    color: var(--muted);
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--primary);
}

/* Dropdown */

.nav-dropdown {
    position: relative;
}

.nav-dropbtn {
    background: none;
    border: none;
    font: inherit;
    color: var(--muted);
    cursor: pointer;
    font-weight: 500;
    padding: 0;
}

.nav-dropbtn:hover {
    color: var(--primary);
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    padding: 0.4rem 0;
}

.nav-dropdown-content a {
    display: block;
    padding: 0.55rem 1rem;
    color: var(--text);
    font-size: 0.9rem;
}

.nav-dropdown-content a:hover {
    background: #F3F4F6;
}

/* Desktop hover support */
@media (min-width: 769px) {
    .nav-dropdown:hover .nav-dropdown-content {
        display: block;
    }
}

/* Buttons */

.btn-primary,
.btn-outline,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.55rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-primary:hover {
    opacity: 0.93;
}

.btn-outline {
    border-color: var(--accent);
    color: var(--accent);
    background: transparent;
}

.btn-outline:hover {
    background: #EFF6FF;
}

.btn-ghost {
    border-color: transparent;
    color: var(--accent);
    background: transparent;
}

.btn-ghost:hover {
    background: #EFF6FF;
}

/* Hero */

.hero {
    background: linear-gradient(180deg, #EFF6FF, #FFFFFF);
    padding: 4.3rem 0 4rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: center;
}

.eyebrow {
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-size: 2.6rem;
    margin: 0 0 1rem;
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--muted);
    margin: 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.hero-footnote {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--muted);
}

.hero-image img {
    width: 100%;
    border-radius: 1.5rem;
    object-fit: cover;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
}

/* Page hero */

.page-hero {
    padding: 4rem 0 3rem;
    background: #FFFFFF;
}

.page-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: center;
}

.page-hero-image img {
    width: 100%;
    border-radius: 1.5rem;
    object-fit: cover;
}

/* About snippet */

.about-snippet-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: center;
}

.about-snippet-image img {
    width: 100%;
    border-radius: 1.5rem;
    object-fit: cover;
}

/* Cards */

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}

/* full-card clickable */
.card-link-wrapper {
    display: block;
}

.card {
    border-radius: 1.25rem;
    border: 1px solid var(--border);
    background: var(--white);
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);

    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    transition: transform 0.12s ease-out, box-shadow 0.12s ease-out;
}

.card h3,
.card p,
.card-link-text {
    text-decoration: none;   /* fix Safari “always underlined” look */
}

.card h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
    color: var(--primary);
}

.card p {
    font-size: 0.95rem;
    color: var(--muted);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.card-link-text {
    margin-top: 1.25rem;
    font-weight: 600;
    color: var(--accent);
}

/* Industries */

.industries-snippet {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: center;
}

.industries-image img {
    width: 100%;
    border-radius: 1.5rem;
    object-fit: cover;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0 0;
}

.industry-tag {
    font-size: 0.8rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    background: #EEF2FF;
    color: #4338CA;
}

/* Service pages */

.service-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: flex-start;
}

.service-image img {
    width: 100%;
    border-radius: 1.5rem;
    object-fit: cover;
}

.service-highlights {
    margin-top: 1.5rem;
}

.service-highlights h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.service-highlights ul {
    padding-left: 1.2rem;
}

/* CTA */

.section-cta {
    background: radial-gradient(circle at top left, #DBEAFE 0, #EFF6FF 45%, #FFFFFF 100%);
    border-top: 1px solid #E5E7EB;
    border-bottom: 1px solid #E5E7EB;
}

.cta-inner {
    text-align: center;
    max-width: 640px;
}

.cta-inner h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.cta-inner p {
    color: var(--muted);
    margin-bottom: 1.5rem;
}

/* Footer */

.site-footer {
    background: #020617;
    color: #e5e7eb;
    padding: 3rem 0 1.5rem;
    margin-top: 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 3rem;
    font-size: 0.9rem;
    padding: 2rem 0;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.site-footer h4 {
    margin: 0 0 0.75rem;
}

.site-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-footer li + li {
    margin-top: 0.4rem;
}

.site-footer a {
    color: #cbd5f5;
}

.site-footer a:hover {
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid #1f2937;
    margin-top: 0;
    padding-top: 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: #9ca3af;
}

/* Misc */

.text-link {
    color: var(--accent);
    font-weight: 500;
}

.text-link:hover {
    text-decoration: underline;
}

.bullet-list {
    padding-left: 1.2rem;
}

.bullet-list li {
    margin-bottom: 0.35rem;
}

/* Contact */

.contact-box {
    border-radius: 1rem;
    border: 1px solid var(--border);
    background: #F9FAFB;
    padding: 1.5rem;
    display: grid;
    gap: 0.75rem;
}

.contact-form {
    margin-top: 1.5rem;
    display: grid;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    padding: 0.6rem 0.75rem;
    font: inherit;
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.alert {
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.alert-success {
    background: #DCFCE7;
    border: 1px solid #16A34A;
    color: #166534;
}

.alert-error {
    background: #FEE2E2;
    border: 1px solid #DC2626;
    color: #991B1B;
}

.alert-validation {
    background: #FEF3C7;
    border: 1px solid #D97706;
    color: #92400E;
}

/* Papers */

.card-paper {
    margin-bottom: 1.25rem;
}

.paper-meta {
    font-size: 0.85rem;
    color: var(--muted);
}

.paper-note {
    font-size: 0.9rem;
    color: var(--muted);
}

/* Whitepaper detail pages */

.paper-hero {
    padding: 4rem 0 2rem;
    background: #FFFFFF;
}

.paper-hero h1 {
    margin-bottom: 0.75rem;
}

.paper-hero-meta {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

.paper-body {
    padding: 0 0 4rem;
    background: #FFFFFF;
}

.paper-body p {
    margin-bottom: 1rem;
}

/* Meta note */
.meta-note {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 0.75rem;
}

/* MOBILE OPTIMIZATIONS */

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .logo-img {
        height: 52px;
    }

    .main-nav {
        flex-wrap: wrap;
        font-size: 0.9rem;
        gap: 0.75rem;
    }

    .hero {
        padding-top: 3.2rem;
        padding-bottom: 3rem;
    }

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

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

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .card {
        padding: 1.25rem;
    }

    .about-snippet-grid,
    .industries-snippet,
    .page-hero-grid,
    .service-grid {
        grid-template-columns: 1fr;
    }

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