/* Color Variables and Base Setup */
:root {
    --bg-darkest: #0f1115;
    --bg-dark: #161922;
    --bg-section: #1c1f2b;
    
    --color-copper: #e07a33;
    --color-copper-glow: rgba(224, 122, 51, 0.5);
    
    --color-blue: #328bc6;
    --color-blue-glow: rgba(50, 139, 198, 0.5);
    
    --text-main: #ffffff;
    --text-muted: #aab0c0;
}

body {
    font-family: 'Cairo', sans-serif;
    background-color: var(--bg-darkest);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Background Utility Classes */
.bg-darkest { background-color: var(--bg-darkest) !important; }
.bg-dark { background-color: var(--bg-dark) !important; }
.section-bg-dark { background-color: var(--bg-section) !important; }

/* Text Utility Classes */
.text-copper { color: var(--color-copper) !important; }
.text-blue { color: var(--color-blue) !important; }

/* Hover Effects */
.hover-copper:hover { color: var(--color-copper) !important; transition: 0.3s ease; }

/* Custom Navbar */
.custom-navbar {
    background-color: rgba(15, 17, 21, 0.85);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.custom-navbar .nav-link {
    color: var(--text-main);
    text-transform: uppercase;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 5px;
}
.custom-navbar .nav-link:hover, .custom-navbar .nav-link.active {
    color: var(--color-copper);
}
.custom-navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 50%;
    transform: translateX(50%);
    width: 0;
    height: 2px;
    background-color: var(--color-copper);
    transition: width 0.3s ease;
}
.custom-navbar .nav-link:hover::after, .custom-navbar .nav-link.active::after {
    width: 80%;
}

/* Glowing Buttons */
.btn-glowing-copper {
    background: linear-gradient(45deg, #c45b18, #e07a33);
    color: #fff;
    border: none;
    box-shadow: 0 0 15px var(--color-copper-glow);
    transition: all 0.3s ease;
}
.btn-glowing-copper:hover {
    background: linear-gradient(45deg, #e07a33, #f59656);
    color: #fff;
    box-shadow: 0 0 25px var(--color-copper-glow);
    transform: translateY(-2px);
}

.btn-outline-glow {
    background: transparent;
    border: 1px solid var(--color-blue);
    color: #fff;
    box-shadow: 0 0 10px rgba(50, 139, 198, 0.3);
    transition: all 0.3s ease;
}
.btn-outline-glow:hover {
    background: var(--color-blue);
    color: #fff;
    box-shadow: 0 0 20px var(--color-blue-glow);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    background: url('https://images.unsplash.com/photo-1541888086425-d81bb19240f5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    position: relative;
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to left, rgba(15, 17, 21, 0.9), rgba(15, 17, 21, 0.4));
    z-index: 0;
}
.glow-text {
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

/* Glowing Border Cards */
.border-hover {
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s ease;
    background: rgba(255, 255, 255, 0.02);
}
.border-hover:hover {
    border-color: var(--color-copper);
    box-shadow: 0 0 20px rgba(224, 122, 51, 0.15), inset 0 0 10px rgba(224, 122, 51, 0.05);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-5px);
}

/* Icons */
.icon-box {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}
.border-hover:hover .icon-box {
    border-color: var(--color-copper);
    box-shadow: 0 0 15px rgba(224, 122, 51, 0.3);
}

/* Accent Line */
.accent-line {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-copper), transparent);
}

/* Project Cards */
.project-overlay {
    background: linear-gradient(to top, rgba(15, 17, 21, 0.95), transparent);
    transition: opacity 0.3s ease;
}
.project-card:hover .project-overlay {
    background: linear-gradient(to top, rgba(224, 122, 51, 0.8), transparent);
}
.project-card img {
    transition: transform 0.5s ease;
}
.project-card:hover img {
    transform: scale(1.05);
}

/* Equipment Cards */
.equipment-card img {
    transition: transform 0.5s ease;
}
.equipment-card:hover img {
    transform: scale(1.05);
}