:root {
    /* "Enterprise Slate & AI Indigo" Palette */
    --bg-primary: #0f172a;   /* Deepest Slate */
    --bg-secondary: #1e293b; /* Card Background */
    --bg-tertiary: #334155;  /* Borders/Hovers */
    
    --text-primary: #f8fafc; /* White/Grey */
    --text-muted: #94a3b8;   /* Muted Grey */
    
    --accent-primary: #6366f1; /* Indigo (Brand) */
    --accent-hover: #4f46e5;   /* Darker Indigo */
    --accent-cyan: #06b6d4;    /* AI Glow */
    
    --success: #10b981;
    --danger: #ef4444;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4 { color: var(--text-primary); margin-top: 0; }
a { text-decoration: none; color: inherit; transition: 0.2s; }

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--bg-tertiary);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}


.brand-logo span { color: var(--accent-primary); }

.nav-links { display: flex; gap: 2rem; }
.nav-links a:hover { color: var(--accent-primary); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}
.btn-primary:hover { background-color: var(--accent-hover); }

.btn-outline {
    background: transparent;
    border: 1px solid var(--bg-tertiary);
    color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--text-primary); }

.btn-glow {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
    color: white;
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
    padding: 3rem 0;
    margin-top: auto;
    text-align: center;
    color: var(--text-muted);
}