/* CSS variables for light theme */
:root {
    --body-bg: linear-gradient(to bottom, #f0f2f5, #e1e5ea);
    --text-color: #333;
    --header-bg: rgba(255, 255, 255, 0.8);
    --nav-bg: rgba(255, 255, 255, 0.7);
    --software-card-bg: rgba(255, 255, 255, 0.9);
    --footer-bg: rgba(255, 255, 255, 0.8);
}

/* Dark theme */
[data-theme='dark'] {
    --body-bg: linear-gradient(to bottom, #222, #333);
    --text-color: #ddd;
    --header-bg: rgba(34, 34, 34, 0.8);
    --nav-bg: rgba(51, 51, 51, 0.7);
    --software-card-bg: rgba(68, 68, 68, 0.9);
    --footer-bg: rgba(34, 34, 34, 0.8);
}

/* General Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    background: var(--body-bg);
    color: var(--text-color);
    transition: background 0.5s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* Header Styles */
header {
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    padding: 2rem;
    text-align: center;
    animation: fadeIn 1s ease-in-out;
    transition: background 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 10;
}

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

/* Theme Toggle Button */
#theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    transition: color 0.3s;
}

#theme-toggle:hover {
    color: #007bff;
}

/* Navigation Styles */
nav {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 1rem;
    transition: background 0.3s, box-shadow 0.3s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 10;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

nav li {
    margin: 0 1rem;
}

nav a {
    color: #555;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 600;
    position: relative;
}

nav a:before {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #007bff;
    transition: width 0.3s ease;
}

nav a:hover {
    color: #007bff;
}

/* Add About link to nav */
nav ul li:last-child {
    margin-right: 0;
}

nav a:hover:before {
    width: 100%;
}

/* Software List Styles */
.software-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 3rem;
    position: relative;
    z-index: 5;
}

/* Software Card Styles */
.software-card {
    width: 280px;
    background: var(--software-card-bg);
    margin: 2rem;
    padding: 2rem;
    text-align: center;
    border-radius: 12px;
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.software-card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, #007bff, #66a3ff);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

.software-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.software-card:hover:before {
    transform: scaleX(1);
}

.software-card img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin-bottom: 1.2rem;
    transition: transform 0.4s ease-in-out;
}

.software-card h2 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
    transition: color 0.3s;
}

.software-card p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-color); /* Use the text color variable */
    transition: color 0.3s;
}

.software-card a {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.8rem 2rem;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s, transform 0.3s;
    box-shadow: 0 3px 5px rgba(0, 119, 255, 0.3);
}

.software-card a:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 5px 8px rgba(0, 86, 179, 0.4);
}

/* Footer Styles */
footer {
    background: var(--footer-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
    z-index: 10;
}