:root {
    --primary: #007C9D;
    --primary-dark: #07566b;
    --text: #172b35;
    --muted: #647780;
    --background: #f4fafb;
    --border: #dce9ed;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: 'Rubik', sans-serif;
    color: var(--text);
    line-height: 1.7;
}

h1, h2, h3, .logo {
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.company-details {
    background: var(--primary-dark);
    color: white;
    padding: 8px 5%;
    display: flex;
    justify-content: flex-end;
    gap: 25px;
    font-size: 13px;
    flex-wrap: wrap;
}

.navbar {
    background: white;
    padding: 18px 5%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 3px 15px #00000008;
}

.logo {
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    font-size: 22px;
    line-height: 1.3;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
}

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

.menu-toggle {
    display: none;
    border: 1px solid var(--border);
    background: white;
    color: var(--primary);
    padding: 8px 12px;
    border-radius: 7px;
    cursor: pointer;
}

.hero {
    padding: 75px 6%;
    background: linear-gradient(120deg, #edf8fa, white);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.tagline {
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero h1 {
    color: var(--primary);
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.2;
    margin: 18px 0;
}

.hero p {
    color: var(--muted);
    font-size: 17px;
    margin-bottom: 25px;
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
}

.btn:hover {
    background: var(--primary-dark);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 390px;
    object-fit: cover;
    border-radius: 18px;
    box-shadow: 0 15px 40px #12313b20;
}

.image-caption {
    position: absolute;
    bottom: 15px;
    left: 15px;
    background: white;
    padding: 12px 16px;
    border-radius: 9px;
    box-shadow: 0 5px 20px #00000015;
}

.image-caption strong,
.image-caption span {
    display: block;
}

.image-caption strong {
    color: var(--primary);
}

.image-caption span {
    font-size: 12px;
    color: var(--muted);
}

.section {
    padding: 70px 6%;
}

.about {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 45px;
    align-items: center;
}

.about-card {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 35px;
}

.about-card i {
    color: var(--primary);
    font-size: 35px;
    margin-bottom: 15px;
}

.about-card h3 {
    margin-bottom: 10px;
}

.about-card p,
.about-content p {
    color: var(--muted);
}

.about-content h2,
.section-heading h2 {
    color: var(--primary);
    font-size: 32px;
    margin: 12px 0;
}

.about-content p {
    text-align: justify;
}

.gallery {
    background: var(--background);
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 35px;
    text-align: center;
}

.section-heading p {
    color: var(--muted);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.gallery-item {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 12px;
    background: #e5eef0;
    cursor: pointer;
}

.gallery-item img {
    display: block;
    width: 100%;
    height: 260px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.photo-label {
    position: absolute;
    bottom: 10px;
    left: 10px;
    padding: 4px 10px;
    background: #12313bd9;
    color: white;
    border-radius: 20px;
    font-size: 12px;
}

.event-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.info-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 25px;
}

.info-card i {
    color: var(--primary);
    font-size: 25px;
    margin-bottom: 12px;
}

.info-card h3 {
    margin-bottom: 8px;
}

.info-card p {
    color: var(--muted);
    font-size: 14px;
}

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

.contact .section-heading h2,
.contact .section-heading p {
    color: white;
}

.contact-card {
    max-width: 750px;
    margin: auto;
    padding: 28px;
    background: white;
    color: var(--text);
    border-radius: 14px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-card div {
    display: grid;
    grid-template-columns: 30px 1fr;
    align-items: center;
}

.contact-card i {
    grid-row: span 2;
    color: var(--primary);
}

.contact-card span {
    color: var(--muted);
    font-size: 14px;
}

footer {
    background: #12313b;
    color: white;
    text-align: center;
    padding: 25px 15px;
    font-size: 13px;
}

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: #07151df2;
    align-items: center;
    justify-content: center;
    padding: 55px 70px;
}

.lightbox.open {
    display: flex;
}

.lightbox img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
}

.lightbox button {
    position: absolute;
    color: white;
    border: none;
    background: transparent;
    font-size: 35px;
    cursor: pointer;
    padding: 10px;
}

.lightbox-close {
    top: 10px;
    right: 25px;
}

.lightbox-prev {
    left: 15px;
}

.lightbox-next {
    right: 15px;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
    }

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

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

    .logo {
        font-size: 18px;
    }
}

@media (max-width: 600px) {
    .company-details {
        justify-content: center;
        gap: 5px 15px;
        font-size: 11px;
    }

    .navbar {
        padding: 14px 5%;
    }

    .logo {
        max-width: 80%;
        font-size: 15px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        box-shadow: 0 8px 15px #00000010;
    }

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

    .hero {
        padding: 45px 6%;
        gap: 30px;
    }

    .hero-image img {
        height: 270px;
    }

    .section {
        padding: 50px 6%;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .gallery-item img {
        height: 170px;
    }

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

    .lightbox {
        padding: 45px 15px;
    }

    .lightbox-prev {
        left: 0;
    }

    .lightbox-next {
        right: 0;
    }
}