:root {
    --bg: #1b1d20;
    --bg-elevated: #24272b;
    --bg-card: #2c3036;
    --header-bg: rgba(18, 20, 22, 0.92);
    --text: #ececec;
    --muted: #b4b8bd;
    --accent: #e67e22;
    --accent-hover: #f39c12;
    --line: rgba(255, 255, 255, 0.08);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5.5rem;
}

body {
    font-family: "Source Sans 3", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 8%;
    background: var(--header-bg);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
}

.logo {
    font-family: "Oswald", sans-serif;
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #f3f3f3;
}

.logo:hover {
    color: var(--accent);
}

.navbar {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.navbar a {
    font-size: 1rem;
    font-weight: 600;
    color: var(--muted);
    position: relative;
    transition: color 0.2s ease;
}

.navbar a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.35rem;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.2s ease;
}

.navbar a:hover,
.navbar a:focus-visible {
    color: #fff;
}

.navbar a:hover::after,
.navbar a:focus-visible::after {
    width: 100%;
}

.navbar-toggler {
    display: none;
    background: none;
    border: 0;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
}

.home {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 8% 5rem;
    background: url("sakuma_fons.png") center / cover no-repeat;
}

.home-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(12, 13, 15, 0.82) 0%, rgba(12, 13, 15, 0.55) 42%, rgba(12, 13, 15, 0.18) 100%),
        linear-gradient(180deg, rgba(12, 13, 15, 0.25) 0%, rgba(12, 13, 15, 0.12) 100%);
}

.home-content {
    position: relative;
    z-index: 1;
    max-width: 36rem;
    text-align: left;
}

.home-content h1 {
    font-family: "Oswald", sans-serif;
    font-size: clamp(3rem, 7vw, 5.2rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.home-content h1 span {
    display: block;
    color: var(--accent);
}

.home-content h3 {
    margin-top: 0.85rem;
    font-family: "Oswald", sans-serif;
    font-size: clamp(1.15rem, 2.4vw, 1.6rem);
    font-weight: 500;
    letter-spacing: 0.06em;
    color: #f0f0f0;
}

.home-text {
    margin-top: 1.2rem;
    max-width: 32rem;
    color: #d7d9dc;
    font-size: 1.08rem;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 10rem;
    padding: 0.85rem 1.6rem;
    border: 2px solid var(--accent);
    background: var(--accent);
    color: #1a130c;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #fff;
}

.btn-outline:hover,
.btn-outline:focus-visible {
    background: rgba(230, 126, 34, 0.16);
    color: #fff;
}

section {
    padding: 6rem 8%;
}

.heading {
    font-family: "Oswald", sans-serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-align: center;
}

.heading::after {
    content: "";
    display: block;
    width: 4.5rem;
    height: 3px;
    margin: 0.8rem auto 0;
    background: var(--accent);
}

.section-intro {
    max-width: 40rem;
    margin: 1.4rem auto 0;
    text-align: center;
    color: var(--muted);
}

.projects {
    background: var(--bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.4rem;
    margin-top: 3rem;
}

.service-card {
    padding: 1.8rem 1.4rem;
    background: var(--bg-card);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(230, 126, 34, 0.45);
}

.service-card i {
    font-size: 2.1rem;
    color: var(--accent);
}

.service-card h3 {
    margin: 0.9rem 0 0.55rem;
    font-family: "Oswald", sans-serif;
    font-size: 1.25rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.service-card p {
    color: var(--muted);
    font-size: 0.98rem;
}

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

.gallery-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem;
    margin-top: 3rem;
}

.gallery-item {
    display: block;
    width: 100%;
    padding: 0;
    border: 1px solid var(--line);
    background: var(--bg-card);
    font: inherit;
    color: inherit;
    cursor: pointer;
    overflow: hidden;
}

.gallery-item:hover,
.gallery-item:focus-visible {
    border-color: rgba(230, 126, 34, 0.45);
}

.gallery-item img {
    display: block;
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3.5rem 4.5rem;
    background: rgba(10, 11, 13, 0.92);
}

.lightbox[hidden] {
    display: none;
}

.lightbox img {
    max-width: min(92vw, 1200px);
    max-height: 86vh;
    width: auto;
    height: auto;
    object-fit: contain;
}

.lightbox-close,
.lightbox-nav {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0;
    background: var(--bg-card);
    color: #fff;
    cursor: pointer;
}

.lightbox-close {
    top: 1rem;
    right: 1rem;
    width: 2.6rem;
    height: 2.6rem;
    font-size: 1.8rem;
}

.lightbox-prev {
    left: 1rem;
}

.lightbox-next {
    right: 1rem;
}

.lightbox-nav {
    top: 50%;
    width: 2.8rem;
    height: 2.8rem;
    font-size: 2rem;
    transform: translateY(-50%);
}

.contact {
    background: var(--bg);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
    margin-top: 3rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 1.3rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--line);
    color: var(--text);
}

.contact-item i {
    flex-shrink: 0;
    font-size: 1.5rem;
    color: var(--accent);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.contact-text small {
    color: var(--muted);
    font-size: 0.85rem;
}

.footer {
    padding: 1.4rem 8%;
    background: #141618;
    border-top: 1px solid var(--line);
    text-align: center;
}

.copyright {
    color: #8d9298;
    font-size: 0.95rem;
}

@media (max-width: 1100px) {
    .services-grid,
    .contact-info {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem 6%;
    }

    .navbar-toggler {
        display: block;
    }

    .navbar {
        position: absolute;
        top: 100%;
        right: 6%;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.1rem;
        min-width: 14rem;
        padding: 1.2rem 1.3rem;
        background: #1f2226;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
    }

    .navbar.active {
        display: flex;
    }

    .home,
    section {
        padding-left: 6%;
        padding-right: 6%;
    }

    .home-content {
        max-width: 100%;
    }

    .services-grid,
    .contact-info,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .lightbox {
        padding: 4rem 0.8rem;
    }

    .lightbox-prev {
        left: 0.4rem;
    }

    .lightbox-next {
        right: 0.4rem;
    }
}