/* --- Global Variables (Refined) --- */
:root {
    --color-dark-bg: #1e1e1e; /* Slightly softer dark background */
    --color-darker-bg: #151515; /* Base background */
    --color-light-text: #f0f0f0; /* Near white text */
    --color-off-white: #b0b0b0; /* Secondary text color */
    --color-accent: #ff4500; /* Deep Orange-Red (A popular modern tech accent) */
    --color-light-separator: #333333;
    --color-shadow: rgba(0, 0, 0, 0.6); /* Deeper shadow */
    --font-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Ideal if you can link Inter or similar */
}

/* --- Base Styles --- */
body {
    font-family: var(--font-primary);
    line-height: 1.75; /* Increased line height for elegance */
    color: var(--color-light-text);
    background-color: var(--color-darker-bg);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1080px; /* Slightly wider container */
    margin: 0 auto;
    padding: 0 30px; /* Increased padding */
}

h1, h2, h3 {
    color: #ffffff;
    margin-top: 0;
    font-weight: 600; /* Bold headers for impact */
    letter-spacing: -0.5px; /* Tighter letter spacing for a modern look */
}

h1 { font-size: 3.5em; font-weight: 800; }
h2 { font-size: 2.4em; margin-bottom: 30px; text-transform: uppercase; color: var(--color-off-white); }
h3 { font-size: 1.8em; color: var(--color-accent); font-weight: 600; margin-bottom: 10px; }

p {
    margin-bottom: 1.7em;
    color: var(--color-off-white); /* Lighter contrast for body text */
}

ul {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 30px;
}

ul li {
    padding: 12px 0; /* More padding */
    border-bottom: 1px solid var(--color-light-separator);
    color: var(--color-light-text);
    font-size: 1.05em;
}

ul li::before {
    content: "●"; /* Changed to a filled circle for a softer look */
    color: var(--color-accent);
    font-size: 0.6em;
    vertical-align: middle;
    margin-right: 15px; /* Increased space */
}

.note {
    font-style: normal;
    padding: 25px;
    background-color: var(--color-dark-bg);
    border-radius: 8px; /* Rounded corners */
    border: 1px solid var(--color-light-separator);
    box-shadow: 0 6px 15px var(--color-shadow); /* More noticeable shadow for depth */
    color: var(--color-light-text);
}

/* --- Utility Classes --- */
.section {
    padding: 100px 0; /* Plenty of vertical space */
    transition: all 0.3s ease;
}

.bg-light {
    background-color: var(--color-dark-bg);
    box-shadow: 0 0 20px var(--color-shadow) inset; /* Subtle inner shadow on dark sections */
}

hr {
    border: none;
    height: 1px;
    background-color: var(--color-light-separator);
    margin: 0;
}

/* --- Header/Hero Section --- */
.hero {
    background: var(--color-darker-bg);
    padding: 150px 0; /* Maximum impact */
    text-align: center;
    border-bottom: 5px solid var(--color-accent);
}

.hero h1 {
    font-size: 5em; /* Larger title */
    background: linear-gradient(90deg, #ffffff, var(--color-accent)); /* Gradient text effect */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.hero .tagline {
    font-size: 1.6em;
    margin-bottom: 60px;
    opacity: 0.7;
    font-weight: 300;
    letter-spacing: 1px;
}

/* --- Buttons (Sophisticated Look) --- */
.btn {
    display: inline-block;
    padding: 14px 35px;
    margin: 8px;
    text-decoration: none;
    border-radius: 50px; /* Pill shape */
    font-weight: 700;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
    border: none;
}

.btn-primary:hover {
    background-color: #ff6a33; /* Softer hover color */
    box-shadow: 0 0 20px var(--color-accent), 0 4px 15px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--color-off-white);
    color: var(--color-off-white);
}

.btn-secondary:hover {
    background-color: var(--color-off-white);
    color: var(--color-darker-bg);
    transform: translateY(-2px);
}

/* --- Compatibility Grid (Card Look) --- */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.grid-2 > div {
    background-color: var(--color-dark-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px var(--color-shadow);
    border-top: 3px solid var(--color-accent);
}

/* --- Footer --- */
.footer {
    background-color: var(--color-dark-bg);
    color: #666;
    text-align: center;
    padding: 40px 0;
    font-size: 0.9em;
    border-top: 1px solid var(--color-light-separator);
}

.footer a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: #fff;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .grid-2 > div {
        margin-bottom: 20px;
    }
    .section {
        padding: 60px 0;
    }
    .hero {
        padding: 100px 0;
    }
    h1 { font-size: 3.5em; }
    h2 { font-size: 2em; }
}