:root {
    --primary-blue: #002366;
    --accent-orange: #FF8C00;
    --slate-gray: #708090;
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --text-white: #ffffff;
    --text-gray: #b0b0b0;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Montserrat', sans-serif;
    --font-secondary: 'Raleway', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: var(--font-secondary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, .font-main {
    font-family: var(--font-main);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
}

.text-accent { color: var(--accent-orange); }
.text-primary { color: var(--primary-blue) !important; }
.text-gray { color: var(--text-gray); }

/* --- Navbar --- */
.navbar-construction {
    padding: 20px 0;
    transition: all 0.4s ease;
    background: transparent;
    z-index: 1000;
}

.navbar-construction.scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(15px);
    padding: 12px 0;
    border-bottom: 1px solid var(--glass-border);
}

.nav-link {
    color: var(--text-white) !important;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin: 0 15px;
    text-transform: uppercase;
    transition: color 0.3s;
    font-family: var(--font-main);
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-orange) !important;
}

/* --- Hero Section --- */
.hero-construction {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.8)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?q=80&w=2070&auto=format&fit=crop') no-repeat center center/cover;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    font-weight: 900;
    margin-bottom: 25px;
}

.hero-subtitle {
    font-size: 1rem;
    letter-spacing: 4px;
    color: var(--accent-orange);
    font-weight: 700;
    margin-bottom: 15px;
    display: block;
}

/* --- Sections --- */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--accent-orange);
}

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

/* --- Service Cards --- */
.service-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    height: 100%;
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-orange);
    transform: scaleX(0);
    transition: transform 0.4s;
    transform-origin: left;
}

.service-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 140, 0, 0.05);
    border-color: var(--accent-orange);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 25px;
    color: var(--accent-orange);
}

/* --- Project Cards --- */
.project-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 400px;
    margin-bottom: 30px;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
    padding: 30px;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s;
}

.project-card:hover .project-img {
    transform: scale(1.1);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
}

/* --- Buttons --- */
.btn-construction {
    background: var(--accent-orange);
    color: white;
    padding: 15px 35px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 5px;
    border: none;
    transition: all 0.3s;
    display: inline-block;
    text-decoration: none;
}

.btn-construction:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.btn-outline-construction {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 13px 33px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 5px;
    transition: all 0.3s;
    display: inline-block;
    text-decoration: none;
}

.btn-outline-construction:hover {
    background: white;
    color: var(--primary-blue);
}

/* --- Language Toggle --- */
.lang-switch {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-white);
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 4px;
}

.lang-switch:hover, .lang-switch.active {
    background: var(--accent-orange);
    color: white;
    border-color: var(--accent-orange);
}

/* --- Animations --- */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Footer --- */
footer {
    padding: 80px 0 30px;
    background: var(--bg-darker);
    border-top: 1px solid var(--glass-border);
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .hero-title { font-size: 3.2rem; }
}

@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .hero-construction { text-align: center; }
    .navbar-construction { background: var(--bg-dark); }
    section { padding: 60px 0; }
}