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

:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-accent: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #bb86fc;
    --accent-hover: #9d65d0;
    --border: #333333;
    --shadow: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-hover);
}

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

header {
    background-color: var(--bg-secondary);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px var(--shadow);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    transition: transform 0.3s ease;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--accent);
    margin: 3px 0;
    transition: 0.3s;
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

nav {
    transition: all 0.4s ease;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav ul li a {
    font-weight: 500;
    position: relative;
    white-space: nowrap;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
}

main {
    flex: 1;
    padding: 2rem 0;
}

.blog-controls {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 1.5rem 2rem;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow);
}

.sort-controls {
    display: flex;
}

#sort-button {
    background-color: var(--accent);
    color: var(--bg-primary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

#sort-button:hover {
    background-color: var(--accent-hover);
}

.search-controls {
    display: flex;
}

#search-input {
    background-color: var(--bg-accent);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    color: var(--text-primary);
    width: 250px;
}

#search-input::placeholder {
    color: var(--text-secondary);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.post-card {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.5s ease;
    display: block;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.post-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow);
    border-color: var(--accent);
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.post-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.post-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
}

.loading-spinner {
    display: none;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(187, 134, 252, 0.3);
    border-left: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.search-highlight {
    background-color: #79509f;
    color: #121212;
    padding: 0.1rem 0.2rem;
    border-radius: 3px;
    font-weight: bold;
}

@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: 0 10px;
    }

    .menu-toggle {
        display: flex;
    }

    nav {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
    }

    nav.active {
        max-height: 300px;
        opacity: 1;
    }

    nav ul {
        flex-direction: column;
        gap: 0;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border);
    }

    nav ul li {
        margin: 0;
    }

    nav ul li a {
        display: block;
        padding: 0.8rem 0;
        border-bottom: 1px solid var(--border);
        white-space: normal;
        position: relative;
    }

    nav ul li a::after {
        content: '';
        position: absolute;
        width: 0;
        height: 2px;
        bottom: 0;
        left: 0;
        background-color: var(--accent);
        transition: width 0.3s ease;
    }

    nav ul li a:hover::after {
        width: 100%;
    }

    nav ul li:last-child a {
        border-bottom: none;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    #search-input {
        width: 100%;
    }

    main {
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    header {
        padding: 0.8rem 0;
    }

    .logo {
        font-size: 1.3rem;
    }

    main {
        padding: 1rem 0;
    }

    .blog-controls {
        padding: 1.2rem;
    }

    .post-card {
        padding: 1.5rem;
    }

    nav ul li a {
        padding: 0.7rem 0;
    }
}

html {
    scroll-behavior: smooth;
}