:root {
    --primary-color: hsl(296, 71%, 40%);
    --secondary-color: hsl(116, 71%, 40%);
    --accent-color: hsl(122, 76%, 49%);
    --bg-color: #ffffff;
    --text-color: #111111;
    --card-bg: #ffffff;
    --font-title: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --border-radius: 7px;
    --spacing: 1.5rem;
    --primary-rgb: 37, 99, 235;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    margin-bottom: 0.6em;
    color: var(--primary-color);
    font-weight: 700;
}

a { text-decoration: none; color: var(--primary-color); transition: 0.3s; }
a:hover { color: var(--accent-color); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--card-bg);
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding: 1.5rem 0;
    margin-bottom: 2rem;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

nav a {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(var(--primary-rgb, 0,0,0), 0.05); /* Subtle bg */
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
}

nav a:hover {
    background: var(--primary-color);
    color: white !important;
}

/* Cards */
.card, .detailed-guide, .calculator-app, .long-form-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05); /* Subtle shadow always darkish */
    color: var(--text-color);
}
.card { overflow: hidden; transition: transform 0.2s; }
.card:hover { transform: translateY(-3px); }

.card-img {
    height: 200px;
    background-color: #ddd; 
    background-size: cover;
    background-position: center;
}

.card-content { padding: 1.5rem; }

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white !important;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-weight: 600;
}
.btn:hover { background: var(--accent-color); }

/* Footer */
footer {
    background: #111;
    color: #eee;
    padding: 3rem 0;
    margin-top: 4rem;
}
footer a { color: #aaa; }
footer a:hover { color: white; }

/* Responsive */
@media (max-width: 768px) {
    nav ul { flex-direction: column; text-align: center; }
}