@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #0080ff;
    --primary-dark: #0066cc;
    --secondary: #001526;
    --background: #000a14;
    --text: #ffffff;
    --text-muted: #a0a0a0;
    --card-bg: #001930;
    --border: #003366;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar/Navigation */
.sidebar {
    width: 250px;
    background-color: var(--secondary);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    padding: 2rem 0;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.nav-links {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 1rem;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--primary);
}

.social-links {
    padding: 1rem;
    display: flex;
    justify-content: space-around;
    margin-top: 2rem;
}

.social-link {
    color: var(--text);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--primary);
}

/* Main Content */
.content {
    flex: 1;
    margin-left: 250px;
    padding: 2rem;
    position: relative;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.page-title {
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
    display: inline-block;
}

/* Writeups Cards */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.writeup-card h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.writeup-card p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.writeup-card hr {
    border: 0;
    height: 1px;
    background-color: var(--border);
    margin: 1rem 0;
}

.writeup-info {
    display: flex;
    justify-content: space-between;
}

/* Writeup Detail */
.back-button {
    display: inline-block;
    margin-bottom: 2rem;
    padding: 0.5rem 1rem;
    background-color: var(--primary);
    color: var(--text);
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.back-button:hover {
    background-color: var(--primary-dark);
}

#writeup-content {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Writeup Content Styling */
#writeup-content h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

#writeup-content h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin: 1.5rem 0 1rem;
}

#writeup-content h3 {
    font-size: 1.25rem;
    color: var(--primary);
    margin: 1.5rem 0 1rem;
}

#writeup-content p {
    margin-bottom: 1rem;
}

#writeup-content pre {
    background-color: var(--background);
    border-radius: 5px;
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
    border-left: 3px solid var(--primary);
}

#writeup-content code {
    font-family: 'Courier New', monospace;
}

#writeup-content img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    margin: 1rem 0;
}

/* Members Page */
.members-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.member-card {
    text-align: center;
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.member-img {
    width: 150px;
    height: 150px;
    overflow: hidden;
    border-radius: 50%;
    margin: 0 auto 1rem;
    border: 3px solid var(--primary);
}

.member-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-card h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.member-card p {
    color: var(--text-muted);
}

/* Contact Page */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.contact-info {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 1rem;
    width: 30px;
    text-align: center;
}

.contact-form {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 5px;
    border: 1px solid var(--border);
    background-color: var(--secondary);
    color: var(--text);
    font-family: 'Poppins', sans-serif;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.submit-btn {
    background-color: var(--primary);
    color: var(--text);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.submit-btn:hover {
    background-color: var(--primary-dark);
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        width: 70px;
        padding: 1rem 0;
    }
    
    .logo h1 {
        font-size: 1rem;
    }
    
    .nav-link {
        padding: 0.75rem;
        text-align: center;
    }
    
    .nav-link span {
        display: none;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .social-link {
        margin-bottom: 1rem;
    }
    
    .content {
        margin-left: 70px;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .cards-container, .members-container {
        grid-template-columns: 1fr;
    }
}