:root{--background-dark: #0f172a;--background-light: #1e293b;--text-primary: #f8fafc;--text-muted: #94a3b8;--accent: #06b6d4;--danger: #dc2626;--border: #334155}html{scroll-behavior:smooth}*{box-sizing:border-box;margin:0;padding:0;font-family:Arial,sans-serif;transition:background-color .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s}body{background-color:var(--background-dark);color:var(--text-primary);line-height:1.6;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:#38bdf8}.container{max-width:1200px;margin:0 auto;padding:20px}h1,h2,h3,h4{color:var(--text-primary);margin-bottom:.5rem}nav{background-color:var(--background-light);padding:15px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.8rem;font-weight:700;color:var(--accent)}.nav-links{display:flex;gap:20px;align-items:center}.avatar-nav{width:35px;height:35px;border-radius:50%;object-fit:cover}#slideMenu{position:fixed;top:0;right:-250px;width:250px;height:100%;background:var(--background-light);padding-top:60px;box-shadow:-5px 0 15px #00000080;transition:right .3s;z-index:1000}#slideMenu.active{right:0}#overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:999;display:none}#overlay.active{display:block}.burger-menu{display:none;cursor:pointer;font-size:1.5rem;color:var(--accent)}.filter-container{display:flex;flex-wrap:wrap;gap:25px;margin-bottom:50px;align-items:center}.search-bar{flex-grow:1;min-width:350px}.search-bar input{width:100%;padding:20px 25px;border:1px solid var(--border);border-radius:30px;background-color:#1e293bcc;color:var(--text-primary);font-size:1.3rem;font-weight:500;box-shadow:inset 0 1px 3px #0006;transition:all .3s ease}.search-bar input::placeholder{color:var(--text-muted);opacity:.7}.search-bar input:focus{border-color:var(--accent);box-shadow:inset 0 1px 3px #000000b3,0 0 10px #06b6d466;outline:none}.filter-btn{padding:14px 25px;border:1px solid var(--border);border-radius:30px;cursor:pointer;background-color:var(--background-light);color:var(--text-muted);font-size:1.1rem;font-weight:700;box-shadow:none}.filter-btn.active{background-color:var(--background-light);color:var(--accent);border-color:var(--accent);box-shadow:0 0 10px #06b6d44d;transform:translateY(-1px)}.filter-btn:not(.active):hover{background-color:var(--border);color:var(--text-primary);transform:translateY(-1px)}#articles-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}.card{background-color:var(--background-light);border-radius:8px;overflow:hidden;box-shadow:0 4px 10px #0003;display:flex;flex-direction:column}.large-content-card{grid-column:1 / -1;display:grid;grid-template-columns:1fr 2fr;min-height:350px}.card-image{position:relative;height:100%;overflow:hidden;min-height:250px}.card-image img,.card-image iframe{width:100%;height:100%;object-fit:cover}.card-content{padding:25px;display:flex;flex-direction:column;justify-content:space-between}.card-content h3{font-size:1.5rem;margin-top:5px}.article-content{color:var(--text-muted);margin:10px 0;flex-grow:1}.card-actions{display:flex;gap:15px;margin-top:15px}.action-btn{background:none;border:1px solid var(--border);color:var(--text-muted);padding:8px 12px;border-radius:4px;cursor:pointer;transition:all .2s;font-size:.9rem}.action-btn:hover{border-color:var(--accent);color:var(--accent)}.action-btn.liked{color:var(--danger);border-color:var(--danger)}.pdf-link-container{margin-top:10px}.pdf-link{display:inline-block;padding:8px 15px;background-color:var(--danger);color:#fff;border-radius:4px;font-weight:700;transition:background-color .2s}.pdf-link:hover{background-color:#ef4444}#article-detail-view{display:grid;grid-template-columns:3fr 1fr;gap:40px}.article-main-col{background-color:var(--background-light);padding:40px;border-radius:8px}.detail-title{font-size:2.5rem;margin-top:10px}.detail-meta{color:var(--text-muted);font-size:.9rem;margin-bottom:20px}.detail-content{padding-top:20px;color:var(--text-primary);font-size:1.1rem}.detail-content p,.detail-content ul,.detail-content ol{margin-bottom:15px}.detail-content h2,.detail-content h3{margin-top:25px;margin-bottom:10px}.article-sidebar-col{background-color:var(--background-light);padding:20px;border-radius:8px;position:sticky;top:20px;max-height:calc(100vh - 40px)}.responsive-video-container{position:relative;width:100%;padding-bottom:75%;height:0;overflow:hidden;margin-bottom:20px;border-radius:8px}.responsive-video-container iframe{position:absolute;top:0;left:0;width:100%;height:100%}.floating-toc h3{color:var(--accent);font-size:1.3rem;border-bottom:none!important;padding-bottom:0!important;margin-bottom:10px!important}.floating-toc ul{list-style:none;padding:0}.floating-toc li{margin-bottom:8px}.floating-toc a{color:var(--text-muted);display:block;transition:color .2s,margin-left .2s;line-height:1.4;font-size:1rem}.floating-toc a:hover{color:var(--accent);margin-left:5px}.modal{display:none;position:fixed;z-index:1001;left:0;top:0;width:100%;height:100%;overflow:auto;background-color:#000c;padding-top:60px}.modal-content{background-color:var(--background-light);margin:5% auto;padding:30px;border:1px solid var(--border);width:80%;max-width:500px;border-radius:8px;color:var(--text-primary)}.close-btn{color:var(--text-muted);float:right;font-size:28px;font-weight:700;cursor:pointer}.close-btn:hover{color:var(--accent)}#toast-container{position:fixed;bottom:20px;right:20px;z-index:10000}.toast{background-color:var(--background-light);color:var(--text-primary);padding:15px 20px;border-radius:8px;margin-top:10px;opacity:0;animation:fadein .5s forwards;box-shadow:0 4px 12px #0000004d;border-left:5px solid var(--accent)}.toast.success{border-left-color:#10b981}.toast.error{border-left-color:var(--danger)}.toast.info{border-left-color:#3b82f6}@keyframes fadein{0%{bottom:0;opacity:0}to{bottom:20px;opacity:1}}@media (max-width: 1000px){.container{padding:10px}.nav-links{display:none}.burger-menu{display:block}.large-content-card{grid-template-columns:1fr}.card-image{min-height:200px}#article-detail-view{display:block!important;padding:0!important}.article-main-col,.article-sidebar-col{width:100%!important;position:static!important;margin-bottom:20px;padding:25px 15px!important}.detail-title{font-size:2rem!important}.detail-content{font-size:1rem}.search-bar input{padding:14px 20px;font-size:1.1rem;border-width:2px}.filter-btn{padding:12px 20px;font-size:1rem}}.admin-tabs{display:flex;gap:10px;margin-bottom:20px}.admin-tabs .tab-btn{padding:10px 15px;background:var(--background-light);color:var(--text-muted);border:1px solid var(--border);border-radius:4px 4px 0 0;cursor:pointer}.admin-tabs .tab-btn.active{background:var(--accent);color:var(--background-dark);font-weight:700;border-color:var(--accent)}.tab-content{display:none;background:var(--background-light);padding:20px;border-radius:0 4px 4px}.tab-content.active{display:block}.admin-form label,.admin-form h4{display:block;margin-top:15px;margin-bottom:5px;color:var(--text-primary);font-weight:700}.admin-form input[type=text],.admin-form textarea,.admin-form select{width:100%;padding:12px;border:1px solid var(--border);border-radius:4px;background-color:var(--background-dark);color:var(--text-primary);font-size:1.05rem}.admin-form textarea{min-height:250px;resize:vertical}.admin-form button[type=submit]{background:var(--accent);color:var(--background-dark);padding:10px 20px;border:none;border-radius:4px;margin-top:20px;font-weight:700;cursor:pointer;transition:background .2s}.admin-form button[type=submit]:hover{background:#38bdf8}.preview-box{margin-top:20px;padding:15px;border:1px dashed var(--border);border-radius:4px;background:#000}.preview-box h4{color:var(--text-muted);border-bottom:1px solid var(--border);padding-bottom:5px;margin-bottom:10px}.preview-content{color:var(--text-primary);font-size:1.1rem}.toolbar{display:flex;flex-wrap:wrap;gap:5px;padding:10px;background:var(--background-dark);border:1px solid var(--border);border-radius:4px 4px 0 0}.toolbar button,.toolbar select{background:var(--background-light);color:var(--text-primary);border:1px solid var(--border);padding:8px;border-radius:4px;cursor:pointer;transition:background .1s}.toolbar button:hover,.toolbar select:hover{background:var(--border)}.comment-item strong{margin-right:5px}.comment-item{word-wrap:break-word;overflow-wrap:break-word}