:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --bg: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #22c55e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-image: radial-gradient(circle at top right, #1e293b, transparent),
                      radial-gradient(circle at bottom left, #1e293b, transparent);
}

.container {
    max-width: 900px;
    width: 100%;
    padding: 40px 20px;
}

header {
    text-align: center;
    margin-bottom: 60px;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(to right, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.main-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.version-badge {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    padding: 8px 16px;
    border-radius: 9999px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid rgba(96, 165, 250, 0.3);
}

.download-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 30px auto;
    background: var(--primary);
    color: white;
    text-decoration: none;
    padding: 18px 32px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
}

.download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.changelog {
    margin-top: 40px;
    text-align: left;
}

.changelog h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: #cbd5e1;
}

.changelog ul {
    list-style: none;
}

.changelog li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    color: var(--text-muted);
}

.changelog li::before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-right: 10px;
}

footer {
    margin-top: auto;
    padding: 40px;
    color: var(--text-muted);
    font-size: 0.9rem;
}