/* CSS Variables for Theme Colors */
:root {
    /* Light Theme */
    --bg-color-body: #f8fafc; /* Very light background */
    --bg-card: #ffffff; /* White card background */
    --text-color-primary: #1a202c; /* Dark text */
    --text-color-secondary: #4a5568; /* Medium text */
    --border-color: #e2e8f0;
    --gradient-from: #a78bfa; /* Violet 400 */
    --gradient-to: #6366f1; /* Indigo 500 */
    --button-gradient-from: #3b82f6; /* Blue 500 */
    --button-gradient-to: #7e22ce; /* Purple 800 */
    --button-hover-gradient-from: #2563eb; /* Blue 600 */
    --button-hover-gradient-to: #6b21a8; /* Purple 900 */
    --toggle-bg: #f3f4f6;
    --toggle-text: #1f2937;
}

/* Dark Theme */
html[data-theme="dark"] {
    --bg-color-body: #0f172a; /* Dark blue-gray for body */
    --bg-card: #1e293b; /* Even darker card background */
    --text-color-primary: #f8fafc; /* Lightest text */
    --text-color-secondary: #cbd5e0; /* Light text */
    --border-color: #475569;
    --gradient-from: #1e293b; /* Dark gradient start */
    --gradient-to: #2d3748; /* Dark gradient end */
    --button-gradient-from: #6366f1; /* Indigo 500 */
    --button-gradient-to: #8b5cf6; /* Violet 500 */
    --button-hover-gradient-from: #4f46e5; /* Indigo 600 */
    --button-hover-gradient-to: #7c3aed; /* Violet 600 */
    --toggle-bg: #374151;
    --toggle-text: #f8fafc;
}

/* General Body Styles */
body {
    background-color: var(--bg-color-body);
    color: var(--text-color-primary);
    font-family: 'Inter', sans-serif;
    transition: background-color 0.5s ease, color 0.5s ease;
    position: relative;
}

/* Main Content Container (mimics the card from portfolio) */
main {
    background-color: var(--bg-card);
    color: var(--text-color-primary);
    border: 1px solid var(--border-color);
    transition: background-color 0.5s ease, color 0.5s ease, border-color 0.5s ease;
    /* Tailwind classes are already applied in HTML for shadows, padding, etc. */
}

h1 {
    color: var(--text-color-primary);
    transition: color 0.5s ease;
    font-family: 'Poppins', sans-serif;
}

p {
    color: var(--text-color-secondary);
    transition: color 0.5s ease;
}

/* Theme Toggle Button */
#theme-toggle {
    background-color: var(--toggle-bg);
    transition: background-color 0.3s ease;
}

#theme-toggle svg {
    color: var(--toggle-text);
    transition: color 0.3s ease;
}

/* Animated Background Circles (Eye Candy) */
.background-circles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.background-circles::before,
.background-circles::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.2;
    filter: blur(80px); /* Adjust blur for effect */
    animation: moveCircles 15s infinite alternate ease-in-out;
}

.background-circles::before {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--gradient-from), transparent);
    top: 10%;
    left: 15%;
    animation-delay: 0s;
}

.background-circles::after {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--gradient-to), transparent);
    bottom: 10%;
    right: 15%;
    animation-delay: 5s;
}

@keyframes moveCircles {
    0% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(-20px, 30px) scale(1.05); }
    50% { transform: translate(20px, -20px) scale(0.95); }
    75% { transform: translate(-30px, 10px) scale(1.02); }
    100% { transform: translate(0, 0) scale(1); }
}

/* Button Animation */
@keyframes bounceSubtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.animate-bounce-subtle {
    animation: bounceSubtle 2s infinite ease-in-out;
}


/* General Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Apply staggered animations to main content elements */
h1.animate-fade-in-down { animation: fadeInDown 0.8s ease-out forwards; }
p.animate-fade-in-left { animation: fadeInLeft 0.8s ease-out 0.2s forwards; opacity: 0; }
p.animate-fade-in-right { animation: fadeInRight 0.8s ease-out 0.4s forwards; opacity: 0; }
a.animate-fade-in-up { animation: fadeInUp 0.8s ease-out 0.6s forwards; opacity: 0; } /* Applied on button now */


/* Responsive adjustments */
@media (max-width: 768px) {
    main {
        padding: 2rem;
        margin: 1.5rem;
        border-radius: 1.25rem;
    }
    h1 {
        font-size: 3rem;
    }
    p {
        font-size: 1.125rem;
    }
    .background-circles::before {
        width: 200px;
        height: 200px;
        top: 5%;
        left: 10%;
    }
    .background-circles::after {
        width: 250px;
        height: 250px;
        bottom: 5%;
        right: 10%;
    }
}