/* --- 1. Theme Variables (Light Mode Default) --- */
:root {
    /* Baby Chick Yellow */
    --color-bg-primary: #FFFACD; /* Lemon Chiffon (Soft Yellow) */
    /* Chocolate Brown */
    --color-text: #5B3A29; /* Darker Brown */
    --color-text-light: #7E5A47; /* Lighter Brown */
    /* Accent Pink */
    --color-accent: #FFB6C1; /* Light Pink */
    --color-accent-dark: #FF69B4; /* Hot Pink */
    /* Card/Nav Background */
    --color-card-bg: #FFE4E1; /* Misty Rose (Soft Pink) */
    --color-card-border: #FFDAB9; /* Peach Puff */
    
    --transition-speed: 0.3s;
}

/* --- Dark Mode Variables --- */
body.dark-mode {
    --color-bg-primary: #381A0F; /* Dark Chocolate Brown */
    --color-text: #FAD0D3; /* Pale Pink for text */
    --color-text-light: #FFC0CB; /* Light Pink */
    --color-accent: #FF69B4; /* Hot Pink */
    --color-accent-dark: #FFB6C1; /* Light Pink */
    --color-card-bg: #5B3A29; /* Medium Chocolate */
    --color-card-border: #7E5A47; /* Lighter Chocolate */
}

/* --- 2. General Page Setup --- */
* {
    box-sizing: border-box;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text);
    margin: 0;
    padding-top: 60px; /* Space for fixed header */
    line-height: 1.6;
}

/* --- 3. Header and Navigation Bar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-card-bg); /* Pink Nav Background */
    padding: 10px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    border-bottom: 3px solid var(--color-card-border);
}

.site-title {
    margin: 0;
    color: var(--color-accent-dark); /* Hot Pink Title */
}

.navbar nav a {
    color: var(--color-text);
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
    padding: 5px 0;
    position: relative;
}

.navbar nav a:hover {
    color: var(--color-accent-dark);
}

/* Cute Underline Effect (Hint of Complexity) */
.navbar nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 3px;
    background-color: var(--color-accent);
    transition: width var(--transition-speed) ease, left var(--transition-speed) ease;
}

.navbar nav a:hover::after {
    width: 100%;
    left: 0;
    background-color: var(--color-accent-dark);
}

/* --- 4. Controls (Buttons) --- */
.controls button {
    background-color: var(--color-accent);
    color: var(--color-text);
    border: 2px solid var(--color-accent-dark);
    padding: 8px 15px;
    margin-left: 10px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
}

.controls button:hover {
    background-color: var(--color-accent-dark);
    color: white;
}

/* --- 5. Content Layout and Sections --- */
.content-wrapper {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 20px;
}

.page-section {
    background-color: var(--color-card-bg);
    border: 3px solid var(--color-card-border);
    padding: 30px;
    margin-bottom: 40px;
    border-radius: 15px;
    box-shadow: 5px 5px 0 var(--color-accent); /* Cute shadow effect */
}

h2 {
    color: var(--color-accent-dark);
    border-bottom: 2px dashed var(--color-card-border);
    padding-bottom: 10px;
}