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

:root {
    --bg-dark: #000000;
    --bg-card: rgba(10, 16, 26, 0.7);
    --bg-card-hover: rgba(16, 26, 42, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(33, 150, 243, 0.45);
    --accent-blue: #2196F3;
    --neon-blue: #2196F3;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --glow-shadow: 0 0 25px -5px rgba(33, 150, 243, 0.45);
    --glass-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.8);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    padding: 10px;
}

/* HEADER */
.header-container {
    display: flex;
    justify-content: space-between; /* Pushes logo left, nav links right */
    align-items: center;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 14px 28px;
    border-radius: 14px;
    background: rgba(8, 12, 20, 0.85);
    backdrop-filter: blur(16px);
    box-sizing: border-box;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo code {
    color: #2196F3;
    font-family: monospace;
    font-size: 1.3rem;
}

.logo span { color: var(--neon-blue); }

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links > a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links > a:hover {
    color: #2196F3;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid #2196F3;
    outline-offset: 4px;
    border-radius: 4px;
}

.nav-dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #9ca3af;
    cursor: pointer;
    transition: color 0.2s ease;
    background: none;
    border: none;
    padding: 8px 12px;
    font-family: inherit;
}

.nav-dropdown.is-open .dropdown-toggle,
.dropdown-toggle:focus-visible {
    color: #2196F3;
}

.dropdown-toggle i {
    transition: transform 0.25s ease;
}

.nav-dropdown.is-open .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    transform: translateY(10px);
    min-width: 110px;
    padding: 10px;
    background: rgba(8, 12, 20, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.9), 0 0 15px rgba(33, 150, 243, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 10;
}

.nav-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(12px);
    pointer-events: auto;
}

.dropdown-menu a {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    color: #9ca3af;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.dropdown-menu a:hover,
.dropdown-menu a:focus-visible {
    background: rgba(33, 150, 243, 0.12);
    color: #2196F3;
    transform: translateX(4px);
}

.dropdown-menu a i {
    font-size: 0.8rem;
    width: 16px;
    text-align: center;
}