/* Base styles and variables */
:root {
    --primary-color: #4a6cf7;
    --secondary-color: #6c757d;
    --light-bg: #ffffff;
    --light-text: #333333;
    --dark-bg: #121212;
    --dark-text: #f5f5f5;
    --card-bg-light: #f8f9fa;
    --card-bg-dark: #1e1e1e;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 4px 6px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body a{
    text-decoration:none;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    transition: var(--transition);
}

.light-theme {
    background-color: var(--light-bg);
    color: var(--light-text);
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header styles */
header {
    padding: 20px 0;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
    background: inherit;
}

.light-theme header {
    background-color: var(--light-bg);
    box-shadow: var(--shadow-light);
}

.dark-theme header {
    background-color: var(--dark-bg);
    box-shadow: var(--shadow-dark);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: inherit;
    transition: var(--transition);
}

#theme-toggle:hover {
    transform: scale(1.1);
}

/* Main content styles */
main {
    padding: 40px 0;
}

/* Tabs styles */
.tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--secondary-color);
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    color: inherit;
    position: relative;
}

.tab-btn:after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.tab-btn.active:after,
.tab-btn:hover:after {
    width: 100%;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Card styles */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.card {
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.light-theme .card {
    background-color: var(--card-bg-light);
    box-shadow: var(--shadow-light);
}

.dark-theme .card {
    background-color: var(--card-bg-dark);
    box-shadow: var(--shadow-dark);
}

.card:hover {
    transform: translateY(-5px);
}

.card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 20px;
}

.card-content h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.card-content p {
    margin-bottom: 20px;
}

.card-links {
    display: flex;
    justify-content: space-between;
}

.btn {
    padding: 8px 15px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.primary {
    background-color: var(--primary-color);
    color: white;
}

.primary:hover {
    background-color: #3a5bd9;
}

.secondary {
    background-color: var(--secondary-color);
    color: white;
}

.secondary:hover {
    background-color: #5a6268;
}

/* About section styles */
#content h2 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

#content p {
    margin-bottom: 15px;
}

/* Footer styles */
footer {
    padding: 20px 0;
    text-align: center;
    margin-top: 40px;
}

.light-theme footer {
    background-color: #f8f9fa;
    border-top: 1px solid #dee2e6;
}

.dark-theme footer {
    background-color: #1a1a1a;
    border-top: 1px solid #2c2c2c;
}

/* Responsive styles */
@media (max-width: 768px) {
    .tabs {
        border-bottom: none;
    }
    
    .tab-btn {
        border-bottom: 1px solid var(--secondary-color);
        text-align: left;
        font-size:10px;

    }
    .secondary {
        margin-top: 7px;

    }
    .card-links{
        display: block;
    }
    
    .tab-btn:after {
        bottom: 0;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}