/*
 * BNA SERVICE — Main stylesheet
 * Upload this file to: public_html/style.css
 * Connect it from your HTML/PHP with:
 * <link rel="stylesheet" href="/style.css">
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
    color-scheme: light;
    --color-navy: #10263d;
    --color-navy-deep: #091a2b;
    --color-blue: #1769aa;
    --color-blue-light: #eaf4fc;
    --color-gold: #d7ad63;
    --color-text: #1d2b39;
    --color-muted: #657487;
    --color-bg: #f5f8fb;
    --color-white: #ffffff;
    --color-border: #e2e9f0;
    --shadow-sm: 0 8px 24px rgba(16, 38, 61, .06);
    --shadow-lg: 0 24px 60px rgba(9, 26, 43, .14);
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --container: 1160px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--color-white);
    color: var(--color-text);
    font-family: 'DM Sans', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
picture,
svg,
video {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

a {
    color: var(--color-blue);
    text-decoration: none;
    transition: color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease;
}

a:hover {
    color: var(--color-navy);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(23, 105, 170, .35);
    outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 .75em;
    color: var(--color-navy);
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    line-height: 1.16;
    letter-spacing: -.035em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.7rem); }
h2 { font-size: clamp(2rem, 4vw, 3.15rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.55rem); }

p {
    margin: 0 0 1rem;
}

p:last-child {
    margin-bottom: 0;
}

.container,
.site-container {
    width: min(var(--container), calc(100% - 48px));
    margin-inline: auto;
}

.section {
    padding-block: clamp(64px, 8vw, 108px);
}

.section--light {
    background: var(--color-bg);
}

.section--dark {
    background: var(--color-navy-deep);
    color: rgba(255, 255, 255, .78);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-white);
}

.section-heading {
    max-width: 720px;
    margin: 0 auto 44px;
    text-align: center;
}

.section-heading p {
    max-width: 620px;
    margin-inline: auto;
    color: var(--color-muted);
    font-size: 1.05rem;
}

.eyebrow,
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--color-blue);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .14em;
    line-height: 1.4;
    text-transform: uppercase;
}

.eyebrow::before,
.section-eyebrow::before {
    width: 24px;
    height: 2px;
    background: var(--color-gold);
    content: '';
}

/* Header / navigation */
.site-header,
.header {
    position: sticky;
    z-index: 1000;
    top: 0;
    border-bottom: 1px solid rgba(226, 233, 240, .8);
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(16px);
}

.header-inner,
.nav-container {
    display: flex;
    min-height: 82px;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand,
.logo {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    gap: 12px;
    color: var(--color-navy);
    font-family: 'Manrope', sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -.04em;
}

.brand:hover,
.logo:hover {
    color: var(--color-blue);
}

.brand-mark,
.logo-mark {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border-radius: 13px;
    background: var(--color-navy);
    color: var(--color-white);
    font-size: .95rem;
    letter-spacing: -.04em;
}

.brand small,
.logo small {
    display: block;
    margin-top: -3px;
    color: var(--color-muted);
    font-family: 'DM Sans', sans-serif;
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
}

.nav-menu,
.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(16px, 2.2vw, 30px);
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-menu a,
.nav-links a {
    color: #425367;
    font-size: .91rem;
    font-weight: 700;
}

.nav-menu a:hover,
.nav-links a:hover,
.nav-menu a[aria-current='page'] {
    color: var(--color-blue);
}

/* Buttons */
.btn,
.button,
button.btn {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 23px;
    border: 1px solid transparent;
    border-radius: 999px;
    background: var(--color-blue);
    color: var(--color-white);
    cursor: pointer;
    font-size: .94rem;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.btn:hover,
.button:hover,
button.btn:hover {
    transform: translateY(-2px);
    background: #10568f;
    box-shadow: 0 10px 24px rgba(23, 105, 170, .22);
    color: var(--color-white);
}

.btn--primary,
.button-primary {
    background: var(--color-blue);
    color: var(--color-white);
}

.btn--secondary,
.button-secondary {
    border-color: rgba(255, 255, 255, .38);
    background: transparent;
    color: var(--color-white);
}

.btn--secondary:hover,
.button-secondary:hover {
    border-color: var(--color-white);
    background: rgba(255, 255, 255, .1);
}

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

.btn--light:hover {
    background: #edf4fa;
    color: var(--color-navy);
}

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding-block: clamp(76px, 10vw, 136px);
    background:
        radial-gradient(ellipse at 80% 20%, rgba(50, 125, 181, .22), transparent 34%),
        linear-gradient(120deg, var(--color-navy-deep), var(--color-navy) 65%, #173f60);
    color: rgba(255, 255, 255, .78);
}

.hero::after {
    position: absolute;
    right: -130px;
    bottom: -240px;
    width: 520px;
    height: 520px;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 50%;
    box-shadow: 0 0 0 55px rgba(255, 255, 255, .025), 0 0 0 110px rgba(255, 255, 255, .02);
    content: '';
    pointer-events: none;
}

.hero h1,
.hero h2 {
    max-width: 850px;
    color: var(--color-white);
}

.hero h1 span,
.hero .highlight {
    color: var(--color-gold);
}

.hero p {
    max-width: 660px;
    color: rgba(255, 255, 255, .76);
    font-size: clamp(1.02rem, 1.8vw, 1.18rem);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.hero-badges,
.trust-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-top: 36px;
    padding: 0;
    list-style: none;
}

.hero-badges li,
.trust-list li {
    display: flex;
    align-items: center;
    gap: 9px;
    color: rgba(255, 255, 255, .85);
    font-size: .9rem;
    font-weight: 600;
}

.hero-badges li::before,
.trust-list li::before {
    width: 7px;
    height: 7px;
    flex: 0 0 7px;
    border-radius: 50%;
    background: var(--color-gold);
    content: '';
}

/* Cards / service grid */
.grid,
.services-grid,
.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
}

.service-card,
.card {
    padding: 30px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.service-card:hover,
.card:hover {
    transform: translateY(-6px);
    border-color: rgba(23, 105, 170, .35);
    box-shadow: var(--shadow-lg);
}

.service-icon,
.card-icon {
    display: grid;
    width: 58px;
    height: 58px;
    margin-bottom: 22px;
    place-items: center;
    border-radius: 17px;
    background: var(--color-blue-light);
    color: var(--color-blue);
    font-size: 1.45rem;
}

.service-card h3,
.card h3 {
    margin-bottom: 12px;
    font-size: 1.22rem;
}

.service-card p,
.card p {
    color: var(--color-muted);
    font-size: .95rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    font-weight: 800;
}

/* About / split layout */
.split-layout,
.about-grid,
.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(36px, 7vw, 88px);
}

.about-image,
.image-frame {
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #e7eef4;
    box-shadow: var(--shadow-lg);
}

.about-image img,
.image-frame img {
    width: 100%;
    height: 100%;
    min-height: 340px;
    object-fit: cover;
}

.check-list {
    display: grid;
    gap: 13px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 32px;
}

.check-list li::before {
    position: absolute;
    top: .15em;
    left: 0;
    display: grid;
    width: 22px;
    height: 22px;
    place-items: center;
    border-radius: 50%;
    background: #e6f4ec;
    color: #207448;
    content: '✓';
    font-size: .78rem;
    font-weight: 800;
}

/* References / project gallery */
.references-grid,
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.reference-card,
.gallery-item {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
}

.reference-card img,
.gallery-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.reference-card-content,
.gallery-caption {
    padding: 22px;
}

.reference-card-content h3,
.gallery-caption h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.reference-card-content p,
.gallery-caption p {
    color: var(--color-muted);
    font-size: .92rem;
}

/* Contact callout */
.contact-banner,
.cta-banner {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: clamp(32px, 6vw, 64px);
    border-radius: var(--radius-lg);
    background: linear-gradient(120deg, var(--color-navy-deep), #17466b);
    color: rgba(255, 255, 255, .78);
}

.contact-banner h2,
.cta-banner h2 {
    max-width: 700px;
    color: var(--color-white);
}

.contact-banner p,
.cta-banner p {
    max-width: 620px;
}

.contact-grid {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
    gap: 36px;
}

.contact-details {
    display: grid;
    align-content: start;
    gap: 18px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
}

.contact-item strong {
    display: block;
    margin-bottom: 3px;
    color: var(--color-navy);
}

.contact-item span,
.contact-item p {
    color: var(--color-muted);
    font-size: .93rem;
}

/* Forms */
.contact-form,
.form-card {
    padding: clamp(24px, 4vw, 38px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--color-navy);
    font-size: .9rem;
    font-weight: 700;
}

.form-control,
.contact-form input,
.contact-form select,
.contact-form textarea,
.form-card input,
.form-card select,
.form-card textarea {
    width: 100%;
    min-height: 49px;
    padding: 12px 14px;
    border: 1px solid #d7e0e9;
    border-radius: var(--radius-sm);
    background: #fbfcfe;
    color: var(--color-text);
    transition: border-color .2s ease, box-shadow .2s ease;
}

.form-control:focus,
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus,
.form-card input:focus,
.form-card select:focus,
.form-card textarea:focus {
    border-color: var(--color-blue);
    outline: 0;
    box-shadow: 0 0 0 4px rgba(23, 105, 170, .1);
}

.contact-form textarea,
.form-card textarea,
textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

/* Footer */
.site-footer,
.footer {
    padding: 56px 0 24px;
    background: #081827;
    color: rgba(255, 255, 255, .68);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 38px;
}

.site-footer .brand,
.footer .brand,
.site-footer .logo,
.footer .logo {
    color: var(--color-white);
}

.footer h3,
.footer h4,
.site-footer h3,
.site-footer h4 {
    margin-bottom: 17px;
    color: var(--color-white);
    font-size: 1rem;
    letter-spacing: 0;
}

.footer-links,
.footer ul {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer a,
.site-footer a {
    color: rgba(255, 255, 255, .72);
}

.footer a:hover,
.site-footer a:hover {
    color: var(--color-gold);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: .85rem;
}

/* Utility classes */
.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }
.text-white { color: var(--color-white); }
.text-gold { color: var(--color-gold); }
.bg-light { background: var(--color-bg); }
.bg-white { background: var(--color-white); }
.mx-auto { margin-inline: auto; }
.max-w-prose { max-width: 720px; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Responsive layouts */
@media (max-width: 1000px) {
    .services-grid,
    .cards-grid,
    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .references-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nav-menu,
    .nav-links {
        gap: 14px;
    }

    .nav-menu a,
    .nav-links a {
        font-size: .84rem;
    }
}

@media (max-width: 760px) {
    .container,
    .site-container {
        width: min(100% - 32px, var(--container));
    }

    .header-inner,
    .nav-container {
        min-height: 72px;
        flex-wrap: wrap;
        gap: 14px;
        padding-block: 12px;
    }

    .nav-menu,
    .nav-links {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 4px;
        white-space: nowrap;
    }

    .nav-menu a,
    .nav-links a {
        font-size: .82rem;
    }

    .hero {
        padding-block: 76px;
    }

    .split-layout,
    .about-grid,
    .content-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-banner,
    .cta-banner {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 30px;
    }

    .footer-grid > :first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 520px) {
    body {
        font-size: 15px;
    }

    .container,
    .site-container {
        width: calc(100% - 28px);
    }

    .section {
        padding-block: 58px;
    }

    .hero {
        padding-block: 64px;
    }

    h1 { font-size: clamp(2.25rem, 11vw, 3.3rem); }
    h2 { font-size: clamp(1.8rem, 8vw, 2.4rem); }

    .services-grid,
    .cards-grid,
    .grid,
    .references-grid,
    .gallery-grid,
    .form-row,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid > :first-child {
        grid-column: auto;
    }

    .service-card,
    .card {
        padding: 24px;
    }

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

    .hero-actions .btn,
    .hero-actions .button {
        width: 100%;
    }

    .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
    }
}