:root {
    /* Light Theme Variables */
    --background-color-light: #f0f2f5;
    --text-color-light: #333;
    --card-background-light: #fff;
    --card-border-light: #ddd;
    --card-hover-light: #e9ecef;
    --toggle-background-light: #ccc;
    --toggle-circle-light: #fff;

    /* Dark Theme Variables */
    --background-color-dark: #282c34;
    --text-color-dark: #f0f2f5;
    --card-background-dark: #3a3f4a;
    --card-border-dark: #444;
    --card-hover-dark: #4f5560;
    --toggle-background-dark: #555;
    --toggle-circle-dark: #eee;

    /* General Variables */
    --transition-speed: 0.3s ease;
    --border-radius: 12px;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Base Styles */
body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body.dark-theme {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

.container {
    text-align: center;
    max-width: 600px;
    width: 100%;
    padding: 30px;
    box-sizing: border-box;
}

/* Header */
header {
    margin-bottom: 40px;
}

.profile-pic {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 4px solid var(--card-background-light); /* To make it visible against a dark background in dark theme */
    box-shadow: var(--box-shadow);
    transition: border-color var(--transition-speed);
}

body.dark-theme .profile-pic {
    border-color: var(--card-background-dark);
}

h1 {
    font-size: 2.8em;
    margin-bottom: 10px;
    font-weight: 600;
}

p {
    font-size: 1.1em;
    opacity: 0.8;
}

/* Theme Toggle */
.theme-toggle-wrapper {
    position: absolute; /* Changed to absolute for positioning */
    top: 20px;
    right: 20px;
    z-index: 1000; /* Ensure it's on top */
}

.theme-toggle {
    display: none; /* Hide the default checkbox */
}

.theme-toggle-label {
    width: 60px;
    height: 30px;
    background-color: var(--toggle-background-light);
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
    transition: background-color var(--transition-speed);
}

.theme-toggle-label::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    background-color: var(--toggle-circle-light);
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform var(--transition-speed), background-color var(--transition-speed);
}

.theme-toggle:checked + .theme-toggle-label {
    background-color: var(--toggle-background-dark);
}

.theme-toggle:checked + .theme-toggle-label::before {
    transform: translateX(30px);
    background-color: var(--toggle-circle-dark);
}

.toggle-icon {
    font-size: 1.2em;
    color: #fdd835; /* Sun color */
    z-index: 1; /* Ensure icons are above the circle */
}

.moon-icon {
    color: #9fa8da; /* Moon color */
}

/* Light/Dark theme specific icon colors */
body:not(.dark-theme) .toggle-icon.moon-icon {
    display: none;
}

body.dark-theme .toggle-icon.sun-icon {
    display: none;
}


/* Links Grid */
.links-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    margin-bottom: 30px;
}

.link-card {
    display: flex;
    align-items: center;
    justify-content: center; /* Center content horizontally */
    background-color: var(--card-background-light);
    color: var(--text-color-light);
    padding: 18px 25px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: 1.2em;
    font-weight: 600;
    transition: background-color var(--transition-speed), transform 0.2s ease, box-shadow var(--transition-speed), color var(--transition-speed);
    box-shadow: var(--box-shadow);
    border: 1px solid var(--card-border-light);
}

.link-card:hover {
    background-color: var(--card-hover-light);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.link-card i {
    margin-right: 15px;
    font-size: 1.4em;
    color: inherit; /* Inherit color from parent */
}

/* Dark Theme Specific Styles for Cards */
body.dark-theme .link-card {
    background-color: var(--card-background-dark);
    color: var(--text-color-dark);
    border-color: var(--card-border-dark);
}

body.dark-theme .link-card:hover {
    background-color: var(--card-hover-dark);
}

/* Footer */
footer {
    margin-top: 50px;
    font-size: 0.9em;
    opacity: 0.7;
}

/* Responsive Design */
@media (min-width: 768px) {
    .links-grid {
        grid-template-columns: repeat(2, 1fr); /* Two columns on larger screens */
    }
}