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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #17212b;
    background: #ffffff;
    line-height: 1.6;
}

body.no-scroll {
    overflow: hidden;
}

img {
    max-width: 100%;
}

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

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

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 14px rgba(0, 0, 0, 0.08);
}

.navbar {
    max-width: 1200px;
    min-height: 78px;
    margin: auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo strong {
    color: #12385b;
    font-size: 24px;
}

.logo span {
    margin-top: 5px;
    color: #0088ae;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    font-weight: bold;
}

.nav-links a:hover {
    color: #0088ae;
}

.menu-button {
    display: none;
    border: 0;
    background: transparent;
    color: #12385b;
    font-size: 30px;
    cursor: pointer;
}

.nav-call,
.primary-button,
.contact-form button,
.cta a {
    display: inline-block;
    border: none;
    border-radius: 6px;
    padding: 13px 21px;
    color: #ffffff;
    background: #0088ae;
    font-weight: bold;
    cursor: pointer;
}

.nav-call:hover,
.primary-button:hover,
.contact-form button:hover,
.cta a:hover {
    background: #006b89;
}

.hero {
    min-height: 650px;
    padding: 100px 24px;
    display: flex;
    align-items: center;
    background:
        linear-gradient(rgba(5, 24, 39, 0.76), rgba(5, 24, 39, 0.82)),
        url("images/commercial-glass-entrance.jpg") center/cover no-repeat;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    margin: auto;
    color: #ffffff;
}

.small-heading {
    margin-bottom: 12px;
    color: #31c3e3;
    font-weight: bold;
    letter-spacing: 1.4px;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 820px;
    margin-bottom: 20px;
    font-size: clamp(43px, 7vw, 78px);
    line-height: 1.04;
}

.hero-content > p:not(.small-heading) {
    max-width: 700px;
    margin-bottom: 30px;
    font-size: 19px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.secondary-button {
    display: inline-block;
    border: 2px solid #ffffff;
    border-radius: 6px;
    padding: 11px 21px;
    color: #ffffff;
    font-weight: bold;
}

.secondary-button:hover {
    color: #12385b;
    background: #ffffff;
}

.trust-strip {
    max-width: 1200px;
    margin: -48px auto 0;
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-radius: 10px;
    overflow: hidden;
    background: #ffffff;
    box-shadow: 0 16px 35px rgba(7, 31, 49, 0.15);
}

.trust-strip div {
    padding: 25px;
    text-align: center;
}

.trust-strip div + div {
    border-left: 1px solid #dfe8ed;
}

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

.trust-strip strong {
    color: #12385b;
    font-size: 20px;
}

.trust-strip span {
    color: #647782;
    font-size: 14px;
}

.section {
    padding: 95px 24px;
}

.section-heading {
    max-width: 750px;
    margin: 0 auto 50px;
    text-align: center;
}

.section-heading p {
    color: #0088ae;
    font-weight: bold;
    text-transform: uppercase;
}

.section-heading h2 {
    margin: 8px 0 15px;
    font-size: clamp(32px, 5vw, 46px);
}

.section-heading span {
    display: block;
    width: 70px;
    height: 4px;
    margin: auto;
    background: #0088ae;
}

.service-grid {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.service-card {
    border: 1px solid #e0e7ec;
    border-radius: 10px;
    padding: 34px 28px;
    background: #ffffff;
    box-shadow: 0 8px 25px rgba(14, 44, 67, 0.07);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(14, 44, 67, 0.13);
}

.service-card h3 {
    margin-bottom: 10px;
    color: #12385b;
    font-size: 23px;
}

.about {
    background: #edf5f7;
}

.about-content {
    max-width: 1150px;
    margin: auto;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2,
.contact-information h2 {
    margin-bottom: 20px;
    font-size: clamp(32px, 5vw, 48px);
    line-height: 1.15;
}

.about-text > p {
    margin-bottom: 18px;
}

.about-text ul {
    margin: 22px 0 0 22px;
}

.about-text li {
    margin-bottom: 9px;
}

.about-photo img {
    width: 100%;
    min-height: 420px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 18px 40px rgba(7, 31, 49, 0.18);
}

.gallery-grid {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.gallery-item {
    position: relative;
    min-height: 310px;
    padding: 0;
    overflow: hidden;
    border: 0;
    border-radius: 12px;
    background: #102f49;
    box-shadow: 0 10px 28px rgba(10, 39, 61, 0.16);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 310px;
    display: block;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.gallery-item span {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 42px 18px 16px;
    color: #ffffff;
    background: linear-gradient(transparent, rgba(5, 24, 38, 0.94));
    font-size: 17px;
    font-weight: bold;
    text-align: left;
}

.gallery-item:hover img {
    transform: scale(1.06);
}

.cta {
    padding: 55px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    color: #ffffff;
    background: #12385b;
}

.cta p {
    color: #55d5ef;
    font-weight: bold;
}

.cta h2 {
    font-size: clamp(26px, 4vw, 40px);
}

.contact {
    color: #ffffff;
    background: #0c263b;
}

.contact-container {
    max-width: 1100px;
    margin: auto;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: start;
}

.contact-information > p {
    margin-bottom: 25px;
}

.contact-item {
    margin-top: 24px;
}

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

.contact-item a {
    color: #4ed2ed;
    font-size: 21px;
    font-weight: bold;
}

.contact-form {
    border-radius: 10px;
    padding: 34px;
    color: #17212b;
    background: #ffffff;
}

.contact-form label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    margin-bottom: 18px;
    border: 1px solid #c9d4da;
    border-radius: 5px;
    padding: 13px;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button {
    width: 100%;
    font-size: 16px;
}

.form-message {
    margin-top: 15px;
    color: #087a4c;
    font-weight: bold;
}

footer {
    padding: 24px;
    color: #d7e4eb;
    background: #071a29;
    text-align: center;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 28px;
    background: rgba(0, 0, 0, 0.91);
}

.lightbox.open {
    display: flex;
}

.lightbox-image {
    max-width: 95vw;
    max-height: 88vh;
    border-radius: 8px;
    box-shadow: 0 18px 55px rgba(0, 0, 0, 0.45);
}

.lightbox-close {
    position: absolute;
    top: 18px;
    right: 28px;
    border: 0;
    color: #ffffff;
    background: transparent;
    font-size: 48px;
    line-height: 1;
    cursor: pointer;
}

@media (max-width: 850px) {
    .menu-button {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 78px;
        right: 16px;
        left: 16px;
        display: none;
        flex-direction: column;
        gap: 0;
        padding: 12px;
        border-radius: 8px;
        background: #ffffff;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        display: block;
        padding: 12px;
    }

    .nav-call {
        display: none;
    }

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

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

    .trust-strip {
        margin: 0;
        border-radius: 0;
    }

    .cta {
        flex-direction: column;
        gap: 22px;
        text-align: center;
    }
}

@media (max-width: 580px) {
    .navbar {
        padding: 0 16px;
    }

    .hero {
        min-height: 590px;
        padding: 75px 20px;
    }

    .hero h1 {
        font-size: 43px;
    }

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

    .trust-strip div + div {
        border-top: 1px solid #dfe8ed;
        border-left: 0;
    }

    .section {
        padding: 72px 20px;
    }

    .service-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .gallery-item,
    .gallery-item img {
        height: 280px;
        min-height: 280px;
    }

    .contact-form {
        padding: 25px 20px;
    }
}
.catalogue-section {
    background: #edf5f7;
}

.catalogue-container {
    max-width: 1100px;
    margin: auto;
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 60px;
    align-items: center;
}

.catalogue-text h2 {
    margin-bottom: 18px;
    color: #12385b;
    font-size: clamp(32px, 5vw, 48px);
    line-height: 1.15;
}

.catalogue-text > p:not(.small-heading) {
    max-width: 650px;
    margin-bottom: 26px;
}

.catalogue-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.catalogue-button,
.catalogue-download {
    display: inline-block;
    border-radius: 6px;
    padding: 13px 22px;
    font-weight: bold;
}

.catalogue-button {
    color: #ffffff;
    background: #0088ae;
}

.catalogue-button:hover {
    background: #006b89;
}

.catalogue-download {
    border: 2px solid #12385b;
    color: #12385b;
    background: transparent;
}

.catalogue-download:hover {
    color: #ffffff;
    background: #12385b;
}

.catalogue-card {
    border-radius: 12px;
    padding: 45px 30px;
    color: #ffffff;
    background: #12385b;
    text-align: center;
    box-shadow: 0 18px 38px rgba(7, 31, 49, 0.2);
}

.pdf-icon {
    width: 90px;
    height: 110px;
    margin: 0 auto 22px;
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: #0088ae;
    font-size: 24px;
    font-weight: bold;
}

.catalogue-card h3 {
    margin-bottom: 8px;
    font-size: 25px;
}

.catalogue-card p {
    color: #cce5ef;
}

@media (max-width: 750px) {
    .catalogue-container {
        grid-template-columns: 1fr;
    }
}