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

:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f29;
    --bg-tertiary: #252d3a;
    --text-primary: #ffffff;
    --text-secondary: #b3b9c4;
    --text-muted: #6c7680;
    --accent-green: #00ff41;
    --accent-green-hover: #00cc34;
    --accent-green-muted: rgba(0, 255, 65, 0.1);
    --border-color: #34404c;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* Sidebar Styles */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 24px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.sidebar-header h2 {
    color: var(--accent-green);
    font-size: 1.4rem;
    font-weight: 600;
}

#version-glitch {
    position: relative;
    font-weight: 700;
    color: var(--accent-green);
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    animation: glitch 1.5s linear infinite;
}

#version-glitch::before,
#version-glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#version-glitch::before {
    color: #00e6e6; /* Cyan */
    animation: glitch-shift 2s linear infinite;
    text-shadow: -1px 0 rgba(0, 230, 230, 0.8);
}

#version-glitch::after {
    color: #ff00ff; /* Magenta */
    animation: glitch-shift 2.3s linear infinite reverse;
    text-shadow: 1px 0 rgba(255, 0, 255, 0.8);
}

@keyframes glitch {
    0%, 100% { transform: translate(0); }
    10% { transform: translate(-1px, 0.5px); }
    20% { transform: translate(1px, -0.5px); }
    30% { transform: translate(0, 0); }
}

@keyframes glitch-shift {
    0%, 100% { transform: translate(0); }
    15% { transform: translate(-1.5px, 0.5px); }
    30% { transform: translate(1.5px, -0.5px); }
    45% { transform: translate(-0.5px, 1px); }
    60% { transform: translate(0.5px, -1px); }
}

.nav-section {
    padding: 0 16px;
    margin-bottom: 24px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.nav-item:hover {
    background: var(--accent-green-muted);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-green-muted);
    color: var(--accent-green);
}

.search-section {
    padding: 0 16px;
    margin-bottom: 24px;
}

.search-container {
    position: relative;
}

.search-container i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

#searchInput {
    width: 100%;
    padding: 12px 12px 12px 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--accent-green);
}

#searchInput::placeholder {
    color: var(--text-muted);
}

.categories-section {
    padding: 0 16px;
    flex-grow: 1;
}

.categories-section h3 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    padding: 0 16px;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.category-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.category-item.active {
    background: var(--accent-green-muted);
    color: var(--accent-green);
}

.count {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.category-item.active .count {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.creator-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-green-muted);
    color: var(--accent-green);
    padding: 8px 16px;
    border-radius: 9999px;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: background 0.2s ease, transform 0.2s ease;
    position: absolute;
    bottom: 16px;
    left: 16px;
    width: calc(100% - 32px);
    justify-content: center;
}

.creator-toggle:hover {
    background: #4a4a4a;
    transform: translateY(-2px);
}

#passwordAction, #deletePasswordAction {
    color: var(--accent-green);
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 24px 32px;
    background: var(--bg-primary);
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.main-header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.add-post-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-green);
    color: var(--bg-primary);
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
}

.add-post-btn:hover {
    background: var(--accent-green-hover);
    transform: translateY(-1px);
}

/* Posts Container */
.posts-container {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.post-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.3s ease;
    animation: fadeIn 0.5s ease-in;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow);
    border-color: var(--accent-green);
}

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

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.post-header-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 8px;
}

.delete-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.delete-btn:hover {
    background: #ff6b6b;
    color: white;
    transform: scale(1.1);
}

.post-tag {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-Entertainment { background: #ff6b6b; color: white; }
.tag-Education { background: #4ecdc4; color: white; }
.tag-Website { background: #45b7d1; color: white; }
.tag-Hack { background: #f9ca24; color: #333; }
.tag-Others { background: #a55eea; color: white; }

.post-time {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.post-topic {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.post-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.post-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
    background: var(--bg-primary);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    text-decoration: none;
}

.post-link .link-text {
    font-family: monospace;
    word-break: break-all;
    font-weight: 500;
    transition: color 0.2s ease;
}

.post-link:hover {
    color: var(--accent-green-hover);
}

.loading, .no-posts {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    padding: 60px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content, .modal-content2 {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-content2 {
    border-left: 4px solid #ff6b6b; /* Red border for delete modal */
}

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

.modal-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 24px 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.close-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s ease;
}

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

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

form {
    padding: 24px;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}

.cancel-btn,
.submit-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
}

.cancel-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.cancel-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.submit-btn {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.submit-btn:hover {
    background: var(--accent-green-hover);
}

/* Mobile Toggle Button */
.mobile-toggle {
    display: none;
    position: relative;
    top: -7px;
    background: var(--accent-green);
    color: var(--bg-primary);
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    box-shadow: 0 4px 12px var(--shadow);
    transition: all 0.2s ease;
}

.mobile-toggle:hover {
    background: var(--accent-green-hover);
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .sidebar {
        width: 280px;
        height: 100vh;
        position: fixed;
        left: -280px;
        top: 0;
        z-index: 1000;
        padding: 16px 0;
        transition: left 0.3s ease;
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
        overflow-y: auto;
    }
    
    .sidebar.mobile-open {
        left: 0;
    }
    
    body.sidebar-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .main-content {
        margin-left: 0;
        padding: 60px 16px 16px;
    }
    
    .main-header {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .main-header h1 {
        font-size: 1.5rem;
        text-align: center;
        margin-top: -50px;
    }
    
    .posts-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .sidebar-header {
        padding: 0 16px 16px;
        text-align: center;
    }
    
    .nav-section,
    .categories-section {
        padding: 0 12px;
    }
    
    .creator-toggle {
        bottom: 12px;
        left: 12px;
        width: calc(100% - 24px);
    }
    
    .post-card {
        padding: 16px;
        margin: 0 4px;
    }
    
    .post-topic {
        font-size: 1.1rem;
    }
    
    .modal-content, .modal-content2 {
        width: 95%;
        margin: 16px;
        max-height: 85vh;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 14px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .form-actions {
        flex-direction: column;
        gap: 8px;
    }
    
    .cancel-btn,
    .submit-btn {
        width: 100%;
        padding: 14px;
    }
    
    .search-section {
        margin-bottom: 20px;
    }
    
    #searchInput {
        padding: 14px 14px 14px 44px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 12px;
    }
    
    .post-card {
        padding: 12px;
        margin: 0;
    }
    
    .post-header {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .post-header-actions {
        align-self: flex-end;
        width: 100%;
        justify-content: flex-end;
    }
    
    .post-footer {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .modal-content, .modal-content2 {
        width: 98%;
        margin: 8px;
        border-radius: 8px;
    }
    
    .modal-header {
        padding: 16px;
    }
    
    form {
        padding: 16px;
    }
    
    .sidebar {
        padding: 12px 0;
    }
    
    .categories-section h3 {
        padding: 0 12px;
        font-size: 0.8rem;
    }
    
    .category-item,
    .nav-item {
        padding: 10px 12px;
        margin: 2px 8px;
    }
    
    .creator-toggle {
        bottom: 8px;
        left: 8px;
        width: calc(60% - 16px);
        padding: 6px 12px;
        font-size: 0.8rem;
        position: fixed;
    }
    
    .creator-toggle img {
        height: 20px;
    }
}