:root {
    --blue-950: #071d3f;
    --blue-900: #0a2854;
    --blue-800: #0c3979;
    --blue-700: #0b5ed7;
    --blue-600: #1474ed;
    --blue-100: #eaf3ff;
    --blue-50: #f4f8ff;
    --ink: #122033;
    --muted: #617086;
    --line: #dfe7f0;
    --surface: #ffffff;
    --surface-soft: #f7f9fc;
    --shadow-sm: 0 10px 30px rgba(11, 38, 74, 0.08);
    --shadow-lg: 0 28px 80px rgba(7, 29, 63, 0.16);
    --radius-sm: 14px;
    --radius-md: 22px;
    --radius-lg: 30px;
    --content: 1180px;
    --transition: 220ms ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--surface);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

button,
a {
    font: inherit;
}

a {
    color: inherit;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(20, 116, 237, 0.35);
    outline-offset: 4px;
}

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

.section {
    padding: 104px 0;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--blue-700);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    line-height: 1.2;
}

.eyebrow-light {
    color: #8fc0ff;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 46px;
}

.section-heading h2,
.about-copy h2,
.reference-card h2,
.contact-copy h2,
.gallery-hero h1 {
    margin: 0;
    color: var(--blue-950);
    font-size: clamp(2.1rem, 4vw, 3.45rem);
    font-weight: 760;
    letter-spacing: -0.045em;
    line-height: 1.05;
}

.section-heading p,
.about-copy > p,
.reference-card p,
.gallery-hero p {
    color: var(--muted);
    font-size: 1.05rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(11, 38, 74, 0.08);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.header-container {
    width: min(calc(100% - 48px), var(--content));
    min-height: 82px;
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-link img {
    width: min(215px, 30vw);
    height: auto;
}

.navigate-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.navigate-buttons a {
    padding: 10px 13px;
    border-radius: 10px;
    color: #34445a;
    font-size: 0.94rem;
    font-weight: 650;
    text-decoration: none;
    transition: color var(--transition), background var(--transition), transform var(--transition);
}

.navigate-buttons a:hover,
.navigate-buttons .active-link {
    color: var(--blue-700);
    background: var(--blue-50);
}

.navigate-buttons a.btn-primary {
    margin-left: 6px;
    padding: 11px 19px;
    color: #fff;
    background: var(--blue-700);
    box-shadow: 0 8px 22px rgba(11, 94, 215, 0.2);
}

.navigate-buttons a.btn-primary:hover {
    color: #fff;
    background: var(--blue-800);
    transform: translateY(-1px);
}

/* Hero */
.hero {
    padding: 28px 24px 0;
}

.hero-carousel {
    position: relative;
    width: min(100%, 1480px);
    height: min(730px, calc(100vh - 138px));
    min-height: 590px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--blue-950);
    box-shadow: var(--shadow-lg);
}

.hero-media,
.project-carousel .carousel {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
}

.carousel img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transform: scale(1.015);
    transition: opacity 700ms ease, transform 5.5s ease;
    pointer-events: none;
}

.carousel img.active {
    opacity: 1;
    transform: scale(1.045);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        linear-gradient(90deg, rgba(5, 19, 42, 0.82) 0%, rgba(5, 24, 52, 0.55) 42%, rgba(5, 24, 52, 0.08) 76%),
        linear-gradient(0deg, rgba(5, 24, 52, 0.32) 0%, transparent 40%);
}

.hero-content {
    position: absolute;
    z-index: 3;
    top: 50%;
    left: max(44px, calc((100% - var(--content)) / 2));
    width: min(700px, calc(100% - 110px));
    transform: translateY(-48%);
    color: #fff;
}

.hero-eyebrow {
    color: #a9d0ff;
}

.hero-content h1 {
    max-width: 760px;
    margin: 0;
    color: #fff;
    font-size: clamp(3rem, 6.3vw, 6rem);
    font-weight: 760;
    letter-spacing: -0.06em;
    line-height: 0.96;
    text-wrap: balance;
}

.hero-content p {
    max-width: 630px;
    margin: 26px 0 0;
    color: rgba(255, 255, 255, 0.86);
    font-size: clamp(1.02rem, 1.8vw, 1.2rem);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
}

.button {
    display: inline-flex;
    min-height: 52px;
    padding: 0 24px;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 12px;
    font-weight: 750;
    text-decoration: none;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.button:hover {
    transform: translateY(-2px);
}

.button-primary {
    color: var(--blue-950);
    background: #fff;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.16);
}

.button-primary:hover {
    background: #f1f6fc;
}

.button-ghost {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
}

.button-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.65);
}

.button-secondary {
    color: #fff;
    background: var(--blue-700);
    box-shadow: 0 12px 28px rgba(11, 94, 215, 0.2);
}

.button-secondary:hover {
    background: var(--blue-800);
}

.controls {
    position: absolute;
    z-index: 5;
    inset: 50% 20px auto;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    transform: translateY(-50%);
}

.arrow {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    color: #fff;
    background: rgba(7, 29, 63, 0.34);
    backdrop-filter: blur(8px);
    cursor: pointer;
    pointer-events: auto;
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.arrow:hover {
    transform: scale(1.06);
    background: rgba(7, 29, 63, 0.65);
    border-color: rgba(255, 255, 255, 0.6);
}

.indicators {
    position: absolute;
    z-index: 5;
    left: 50%;
    bottom: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    transform: translateX(-50%);
}

.indicators button {
    width: 7px;
    height: 7px;
    padding: 0;
    border: 0;
    border-radius: 99px;
    background: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: width var(--transition), background var(--transition);
}

.indicators button.active {
    width: 27px;
    background: #fff;
}

/* Trust strip */
.trust-strip {
    padding: 34px 0;
    border-bottom: 1px solid var(--line);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.trust-item {
    padding: 8px 36px;
    text-align: center;
}

.trust-item + .trust-item {
    border-left: 1px solid var(--line);
}

.trust-item strong,
.trust-item span {
    display: block;
}

.trust-item strong {
    color: var(--blue-950);
    font-size: 1.05rem;
}

.trust-item span {
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.9rem;
}

/* Services */
.services-section {
    background: var(--surface-soft);
}

.services {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.service-item {
    min-height: 320px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: 0 1px 0 rgba(7, 29, 63, 0.02);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.service-item:hover {
    transform: translateY(-7px);
    border-color: rgba(11, 94, 215, 0.24);
    box-shadow: var(--shadow-sm);
}

.service-icon {
    width: 68px;
    height: 68px;
    margin-bottom: 56px;
    display: grid;
    place-items: center;
    border-radius: 17px;
    background: var(--blue-50);
}

.service-icon img {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

.service-item h3 {
    margin: 0 0 10px;
    color: var(--blue-950);
    font-size: 1.17rem;
}

.service-item p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* About */
.about-section {
    background: #fff;
}

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
    gap: clamp(60px, 9vw, 120px);
    align-items: start;
}

.about-copy > p {
    max-width: 680px;
    margin: 24px 0 0;
}

.text-link {
    display: inline-flex;
    gap: 10px;
    margin-top: 28px;
    align-items: center;
    color: var(--blue-700);
    font-weight: 750;
    text-decoration: none;
}

.text-link span {
    transition: transform var(--transition);
}

.text-link:hover span {
    transform: translateX(4px);
}

.offers {
    display: grid;
    gap: 14px;
}

.offers-item {
    display: grid;
    grid-template-columns: 58px 1fr;
    gap: 20px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface-soft);
}

.offers-item img {
    width: 54px;
    height: 54px;
    object-fit: contain;
}

.offers-item h3 {
    margin: 1px 0 5px;
    color: var(--blue-950);
    font-size: 1.02rem;
}

.offers-item p {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

/* Reference preview */
.references-preview {
    padding-top: 0;
}

.reference-card {
    min-height: 280px;
    padding: clamp(36px, 6vw, 66px);
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 36px;
    overflow: hidden;
    border: 1px solid #d7e6f9;
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 88% 15%, rgba(20, 116, 237, 0.16), transparent 30%),
        linear-gradient(135deg, #f2f7ff 0%, #ffffff 58%);
}

.reference-card h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

.reference-card p {
    max-width: 650px;
    margin: 16px 0 0;
}

.reference-card .button {
    flex-shrink: 0;
}

/* Contact */
.contact-section,
.gallery-cta-section {
    padding-top: 0;
}

.contact-card {
    padding: clamp(38px, 6vw, 70px);
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.75fr);
    gap: clamp(40px, 8vw, 90px);
    align-items: center;
    overflow: hidden;
    border-radius: var(--radius-lg);
    color: #fff;
    background:
        radial-gradient(circle at 85% 10%, rgba(68, 152, 255, 0.32), transparent 28%),
        linear-gradient(135deg, var(--blue-950), var(--blue-800));
    box-shadow: var(--shadow-lg);
}

.contact-copy h2 {
    color: #fff;
    font-size: clamp(2.1rem, 4vw, 3.55rem);
}

.contact-copy p {
    max-width: 620px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.76);
    font-size: 1.02rem;
}

.contact-buttons {
    display: grid;
    gap: 12px;
}

.contact-link {
    padding: 18px 20px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.08);
    text-decoration: none;
    backdrop-filter: blur(12px);
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.contact-link:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(255, 255, 255, 0.13);
}

.contact-label {
    display: block;
    margin-bottom: 2px;
    color: #9fc8fb;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.contact-link strong {
    color: #fff;
    font-size: clamp(1rem, 2vw, 1.15rem);
}

/* Footer */
.site-footer {
    margin-top: 0;
    border-top: 1px solid var(--line);
    background: #fff;
}

.footer-content {
    min-height: 118px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 28px;
    align-items: center;
}

.footer-logo img {
    width: 170px;
}

.footer-content p {
    margin: 0;
    color: #78869a;
    font-size: 0.84rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: flex-end;
    gap: 22px;
}

.footer-links a {
    color: #526176;
    font-size: 0.9rem;
    font-weight: 650;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--blue-700);
}

/* Gallery */
.gallery-page {
    overflow: hidden;
}

.gallery-hero {
    padding: 104px 0 80px;
    background:
        radial-gradient(circle at 82% 10%, rgba(20, 116, 237, 0.15), transparent 25%),
        linear-gradient(180deg, #f5f9ff 0%, #ffffff 100%);
}

.gallery-hero .content-width {
    max-width: 880px;
    margin-left: max(24px, calc((100% - var(--content)) / 2));
    margin-right: 24px;
}

.gallery-hero p {
    max-width: 650px;
    margin: 22px 0 0;
}

.gallery-list {
    padding-top: 70px;
}

.gallery-grid {
    display: grid;
    gap: 92px;
}

.gallery-item {
    min-width: 0;
}

.gallery-meta {
    display: flex;
    gap: 22px;
    margin-bottom: 24px;
    align-items: flex-start;
}

.project-index {
    padding-top: 3px;
    color: #9aabc0;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.project-type {
    display: block;
    margin-bottom: 4px;
    color: var(--blue-700);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.gallery-meta h2 {
    margin: 0;
    color: var(--blue-950);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    letter-spacing: -0.035em;
}

.project-carousel {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 8.5;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: #0c1f37;
    box-shadow: var(--shadow-sm);
}

.project-carousel .carousel img.active {
    transform: scale(1.02);
}

.project-carousel .controls {
    inset-inline: 18px;
}

.project-carousel .arrow {
    background: rgba(7, 29, 63, 0.58);
}

.compact-contact {
    box-shadow: none;
}

/* Motion accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

/* Tablet */
@media (max-width: 980px) {
    .section {
        padding: 82px 0;
    }

    .navigate-buttons a:not(.btn-primary) {
        padding-inline: 8px;
    }

    .hero-carousel {
        height: 660px;
        min-height: 0;
    }

    .hero-content {
        left: 46px;
    }

    .hero-overlay {
        background: linear-gradient(90deg, rgba(5, 19, 42, 0.82) 0%, rgba(5, 24, 52, 0.48) 68%, rgba(5, 24, 52, 0.25) 100%);
    }

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

    .service-item {
        min-height: 290px;
    }

    .about-grid,
    .contact-card {
        grid-template-columns: 1fr;
    }

    .about-grid {
        gap: 50px;
    }

    .offers {
        grid-template-columns: repeat(3, 1fr);
    }

    .offers-item {
        grid-template-columns: 1fr;
    }

    .reference-card {
        align-items: start;
        flex-direction: column;
    }
}

/* Mobile */
@media (max-width: 740px) {
    .content-width,
    .header-container {
        width: min(calc(100% - 32px), var(--content));
    }

    html {
        scroll-padding-top: 76px;
    }

    .section {
        padding: 70px 0;
    }

    .header-container {
        min-height: 72px;
    }

    .logo-link img {
        width: 162px;
        max-width: 44vw;
    }

    .navigate-buttons {
        gap: 2px;
    }

    .navigate-buttons a {
        display: none;
    }

    .navigate-buttons a.btn-primary,
    .navigate-buttons .active-link {
        display: inline-flex;
    }

    .navigate-buttons .active-link {
        padding-inline: 9px;
    }

    .hero {
        padding: 14px 10px 0;
    }

    .hero-carousel {
        height: 650px;
        border-radius: 24px;
    }

    .hero-content {
        top: auto;
        right: 26px;
        bottom: 76px;
        left: 26px;
        width: auto;
        transform: none;
    }

    .hero-content h1 {
        font-size: clamp(2.8rem, 13vw, 4.2rem);
    }

    .hero-content p {
        margin-top: 20px;
        font-size: 1rem;
    }

    .hero-actions {
        margin-top: 28px;
    }

    .button {
        width: 100%;
    }

    .hero-overlay {
        background: linear-gradient(0deg, rgba(5, 19, 42, 0.9) 0%, rgba(5, 24, 52, 0.48) 58%, rgba(5, 24, 52, 0.14) 100%);
    }

    .hero .controls {
        display: none;
    }

    .hero .indicators {
        bottom: 24px;
    }

    .trust-strip {
        padding: 28px 0;
    }

    .trust-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .trust-item {
        padding: 14px 0;
    }

    .trust-item + .trust-item {
        border-top: 1px solid var(--line);
        border-left: 0;
    }

    .section-heading {
        margin-bottom: 32px;
    }

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

    .service-item {
        min-height: 0;
        padding: 24px;
    }

    .service-icon {
        margin-bottom: 30px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }

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

    .offers-item {
        grid-template-columns: 52px 1fr;
        gap: 16px;
        padding: 20px;
    }

    .offers-item img {
        width: 48px;
        height: 48px;
    }

    .reference-card,
    .contact-card {
        padding: 34px 24px;
        border-radius: 22px;
    }

    .contact-card {
        gap: 34px;
    }

    .footer-content {
        padding: 30px 0;
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 16px;
    }

    .footer-links {
        justify-content: center;
    }

    .gallery-hero {
        padding: 72px 0 58px;
    }

    .gallery-hero .content-width {
        width: min(calc(100% - 32px), var(--content));
        margin-inline: auto;
    }

    .gallery-list {
        padding-top: 56px;
    }

    .gallery-grid {
        gap: 64px;
    }

    .gallery-meta {
        gap: 14px;
    }

    .project-carousel {
        aspect-ratio: 4 / 3;
        border-radius: 18px;
    }

    .project-carousel .arrow {
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 390px) {
    .logo-link img {
        width: 145px;
    }

    .navigate-buttons a.btn-primary {
        padding: 9px 13px;
        font-size: 0.88rem;
    }

    .hero-content {
        right: 21px;
        left: 21px;
    }

    .hero-content h1 {
        font-size: 2.65rem;
    }
}