/* ============================================
   Spingo CMS 3.0 - Nebula Theme
   Космическая тема для фронтенда
   ============================================ */

:root {
    --nebula-dark: #0a0e27;
    --nebula-darker: #050811;
    --nebula-blue: #00d4ff;
    --nebula-purple: #8b5cf6;
    --nebula-pink: #ec4899;
    --nebula-cyan: #06b6d4;
    --nebula-neon: #00ff88;
    --nebula-text: #e0e7ff;
    --nebula-text-dim: #9ca3af;
    --nebula-border: rgba(0, 212, 255, 0.2);
    --nebula-glow: rgba(0, 212, 255, 0.3);
}

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

body { 
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; 
    line-height: 1.6; 
    color: var(--nebula-text);
    background: var(--nebula-darker);
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 70%);
    background-attachment: fixed;
    min-height: 100vh;
}

.container { 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 30px; 
}

/* Header - Космический */
.header { 
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    color: white; 
    padding: 1.5rem 0; 
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(0, 212, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid var(--nebula-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent,
        var(--nebula-blue),
        var(--nebula-purple),
        var(--nebula-pink),
        var(--nebula-blue),
        transparent
    );
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.nav { 
    display: flex; 
    gap: 1.5rem; 
    align-items: center; 
    flex-wrap: wrap;
}

.nav a { 
    color: var(--nebula-text-dim); 
    text-decoration: none; 
    padding: 0.8rem 1.5rem; 
    border-radius: 8px; 
    transition: all 0.3s ease;
    font-weight: 500;
    border: 1px solid transparent;
    position: relative;
}

.nav a::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--nebula-blue), var(--nebula-purple));
    transition: width 0.3s ease;
}

.nav a:hover::before,
.nav a.active::before {
    width: 80%;
}

.nav a:hover { 
    color: var(--nebula-blue);
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--nebula-border);
    text-shadow: 0 0 10px var(--nebula-glow);
}

.nav a.active {
    color: var(--nebula-blue);
    background: rgba(0, 212, 255, 0.15);
}

.logo { 
    font-size: 1.8rem; 
    font-weight: 700; 
    margin-right: 2rem;
    background: linear-gradient(135deg, var(--nebula-blue), var(--nebula-purple), var(--nebula-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--nebula-glow);
    letter-spacing: -0.5px;
}

/* Main content */
.main { 
    display: grid; 
    grid-template-columns: 1fr; 
    gap: 2rem; 
    padding: 3rem 0; 
    min-height: 60vh; 
}

@media (min-width: 768px) {
    .main {
        grid-template-columns: 2fr 1fr;
    }
}

/* Content area - Космические карточки */
.content { 
    background: rgba(10, 14, 39, 0.6);
    backdrop-filter: blur(20px);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 0 0 1px var(--nebula-border),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid var(--nebula-border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.content::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--nebula-blue), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.content:hover::before {
    opacity: 1;
}

.content:hover { 
    transform: translateY(-5px);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(0, 212, 255, 0.2),
        0 0 0 1px var(--nebula-blue);
    border-color: var(--nebula-blue);
}

.content h1 { 
    color: var(--nebula-text); 
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--nebula-blue), var(--nebula-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--nebula-border);
    position: relative;
}

.content h1::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--nebula-blue), transparent);
}

.content h2 { 
    color: var(--nebula-text); 
    margin: 2.5rem 0 1.5rem 0;
    font-size: 1.8rem;
    font-weight: 600;
    position: relative;
    padding-left: 15px;
}

.content h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--nebula-blue), var(--nebula-purple));
    border-radius: 2px;
}

.content h3 {
    color: var(--nebula-text);
    margin: 2rem 0 1rem 0;
    font-size: 1.4rem;
    font-weight: 600;
}

.content p { 
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--nebula-text-dim);
}

.content a {
    color: var(--nebula-blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.content a:hover {
    color: var(--nebula-cyan);
    border-bottom-color: var(--nebula-cyan);
    text-shadow: 0 0 10px var(--nebula-glow);
}

.content ul, .content ol { 
    margin: 2rem 0; 
    padding-left: 2rem; 
    color: var(--nebula-text-dim);
}

.content li {
    margin-bottom: 0.8rem;
    line-height: 1.8;
}

.content li::marker {
    color: var(--nebula-blue);
}

.content code {
    background: rgba(0, 212, 255, 0.1);
    color: var(--nebula-cyan);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    border: 1px solid var(--nebula-border);
}

.content pre {
    background: rgba(5, 8, 17, 0.8);
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--nebula-border);
    margin: 1.5rem 0;
}

.content pre code {
    background: none;
    padding: 0;
    border: none;
}

.content blockquote {
    border-left: 4px solid var(--nebula-blue);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: var(--nebula-text-dim);
    font-style: italic;
    background: rgba(0, 212, 255, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
}

.content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--nebula-border);
}

/* Post meta */
.post-meta {
    color: var(--nebula-text-dim);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--nebula-border);
    border-bottom: 1px solid var(--nebula-border);
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.category {
    color: var(--nebula-blue);
    margin-bottom: 1rem;
    display: inline-block;
    background: rgba(0, 212, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    border: 1px solid var(--nebula-border);
    transition: all 0.3s ease;
}

.category:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.category a {
    color: var(--nebula-blue);
    text-decoration: none;
}

.category a:hover {
    text-shadow: 0 0 10px var(--nebula-glow);
}

/* Posts list */
.posts-list {
    margin-top: 2rem;
}

.post-preview {
    border-bottom: 1px solid var(--nebula-border);
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    padding: 1.5rem;
    border-radius: 12px;
}

.post-preview:hover {
    background: rgba(0, 212, 255, 0.05);
    transform: translateX(10px);
}

.post-preview:last-child {
    border-bottom: none;
}

.post-preview h2 {
    margin-bottom: 0.8rem;
}

.post-preview h2 a {
    color: var(--nebula-text);
    text-decoration: none;
    transition: all 0.3s ease;
}

.post-preview h2 a:hover {
    color: var(--nebula-blue);
    text-shadow: 0 0 10px var(--nebula-glow);
}

.post-preview .excerpt {
    color: var(--nebula-text-dim);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.post-preview .read-more {
    color: var(--nebula-blue);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.post-preview .read-more:hover {
    color: var(--nebula-cyan);
    gap: 1rem;
}

.post-preview .read-more::after {
    content: "→";
    transition: transform 0.3s ease;
}

.post-preview .read-more:hover::after {
    transform: translateX(5px);
}

/* Sidebar */
.sidebar {
    background: rgba(10, 14, 39, 0.6);
    backdrop-filter: blur(20px);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 0 0 1px var(--nebula-border);
    border: 1px solid var(--nebula-border);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar h3 {
    color: var(--nebula-text);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--nebula-border);
    position: relative;
}

.sidebar h3::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--nebula-blue), transparent);
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    margin-bottom: 0.8rem;
}

.sidebar a {
    color: var(--nebula-text-dim);
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    padding: 0.5rem 0;
    border-left: 3px solid transparent;
    padding-left: 1rem;
}

.sidebar a:hover {
    color: var(--nebula-blue);
    border-left-color: var(--nebula-blue);
    transform: translateX(5px);
    text-shadow: 0 0 10px var(--nebula-glow);
}

/* Footer */
.footer {
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    color: var(--nebula-text-dim);
    padding: 2.5rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--nebula-border);
    text-align: center;
}

.footer::before {
    content: "";
    display: block;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--nebula-blue), transparent);
    margin: 0 auto 2rem;
}

.footer p {
    margin: 0;
    font-size: 0.95rem;
}

/* 404 Page */
.error-404 {
    text-align: center;
    padding: 4rem 2rem;
}

.error-404 h1 {
    font-size: 6rem;
    background: linear-gradient(135deg, var(--nebula-blue), var(--nebula-purple), var(--nebula-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    font-weight: 700;
}

.error-404 p {
    font-size: 1.2rem;
    color: var(--nebula-text-dim);
    margin-bottom: 2rem;
}

.error-404 a {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--nebula-blue), var(--nebula-purple));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.error-404 a:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .logo {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .main {
        grid-template-columns: 1fr;
        padding: 2rem 0;
    }
    
    .content {
        padding: 2rem;
    }
    
    .content h1 {
        font-size: 2rem;
    }
    
    .sidebar {
        position: static;
    }
    
    .error-404 h1 {
        font-size: 4rem;
    }
}

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

.content,
.sidebar,
.post-preview {
    animation: fadeIn 0.5s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--nebula-darker);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--nebula-blue), var(--nebula-purple));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--nebula-purple), var(--nebula-pink));
}