:root {
    /* Color Palette - Industrial Premium */
    --primary: #2B3E4F;
    /* Logo Navy */
    --secondary: #1F2D3A;
    /* Darker Navy */
    --accent: #E67E22;
    /* Logo Orange */
    --accent-hover: #D35400;
    --text-main: #F4F7F6;
    /* Off-white for better contrast */
    --text-sub: #AAB7B8;
    /* Muted gray/blue */
    --white: #FFFFFF;
    --bg-dark: #1A252F;
    /* Industrial Background */
    --industrial-orange: #E67E22;

    /* Typography */
    --font-sans: 'Inter', 'Roboto', 'Open Sans', -apple-system, sans-serif;
    --font-mono: 'Fira Code', 'Roboto Mono', monospace;

    /* Spacing */
    --gap-sm: 1rem;
    --gap-md: 2rem;
    --gap-lg: 4rem;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

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

h1,
h2,
h3,
h4 {
    font-weight: 700;
    color: var(--white);
    line-height: 1.1;
}

a {
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
}

button,
.btn {
    cursor: pointer;
    border: none;
    border-radius: 4px;
    padding: 0.8rem 1.5rem;
    font-weight: 600;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.btn-primary {
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn-primary:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.btn-accent {
    background-color: var(--industrial-orange);
    color: var(--white);
}

.btn-accent:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gap-md);
}

.section {
    padding: var(--gap-lg) 0;
}

/* Navbar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(10, 25, 47, 0.85);
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: var(--gap-md);
    list-style: none;
    align-items: center;
}

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

/* Scroll Effects */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--gap-md);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: #FFFFFF;
    min-width: 280px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 0.5rem;
    z-index: 2000;
    border: 1px solid rgba(0, 0, 0, 0.1);
    margin-top: 0.5rem;
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.1s ease-out;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    text-decoration: none;
    color: #2B3E4F !important;
    border-radius: 8px;
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: #F4F7F6;
    transform: translateX(5px);
}

.dropdown-item img {
    max-height: 48px;
    width: auto;
    object-fit: contain;
}

.dropdown-item span {
    font-weight: 700;
    color: #2B3E4F;
    display: block;
    line-height: 1.2;
}

.dropdown-item small {
    font-size: 0.8rem;
    color: #566573;
}

.dropdown-item.disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo Fixes */
.logo img {
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.1));
}