.header{margin-bottom:40px;background:linear-gradient(135deg,var(--primary) 0%,#764ba2 100%);color:var(--primary-contrast);border-radius:15px;box-shadow:0 8px 30px var(--color-elevated)}.header-content{display:flex;justify-content:space-between;align-items:center;padding:30px 40px;max-width:1200px;margin:0 auto}.header-text h1{font-size:2.2rem;margin-bottom:10px;font-weight:700}.header-text p{font-size:1.1rem;opacity:.95;margin:0}.header-actions{display:flex;gap:10px;align-items:center}.theme-toggle-btn{background:#ffffff2e;border:2px solid rgba(255,255,255,.28);color:var(--primary-contrast);padding:10px 14px;border-radius:50px;font-size:1rem}.theme-toggle-btn:hover{background:#ffffff47;transform:translateY(-2px)}.new-article-btn{background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.3);color:var(--primary-contrast);padding:12px 25px;border-radius:25px;font-size:1.05rem;cursor:pointer;transition:all .3s;font-weight:600}.new-article-btn:hover{background:#ffffff4d;transform:translateY(-2px);box-shadow:0 5px 15px var(--color-elevated)}@media (max-width: 768px){.header-content{flex-direction:column;text-align:center;padding:25px 20px;gap:20px}.header-text h1{font-size:2rem}.header-text p{font-size:1.1rem}.new-article-btn{width:100%;max-width:200px}}.navigation{display:flex;gap:10px;margin-bottom:30px;flex-wrap:wrap;justify-content:center}.nav-btn{padding:8px 16px;border:2px solid var(--primary);background:var(--color-surface);color:var(--primary);border-radius:20px;cursor:pointer;transition:all .3s;font-weight:500}.nav-btn:hover{background:#f0f4ff}.nav-btn.active{background:var(--primary);color:var(--primary-contrast)}@media (max-width: 768px){.navigation{gap:5px}.nav-btn{padding:6px 12px;font-size:.9rem}}.search-bar{margin-bottom:30px;display:flex;justify-content:center}.search-input{width:100%;max-width:700px;padding:12px 20px;border:2px solid var(--color-border);background:var(--color-surface);color:var(--color-text);border-radius:25px;font-size:1rem;transition:border-color .3s,background .3s,color .3s}.search-input:focus{outline:none;border-color:var(--primary)}@media (max-width: 768px){.search-input{max-width:100%}}.article-list{text-align:center}.article-list h2{margin-bottom:30px;color:#333;text-align:center}.articles-grid{display:grid;gap:25px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.article-card{background:var(--color-surface);padding:22px;border-radius:12px;box-shadow:0 2px 8px var(--color-elevated);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;border-left:4px solid var(--primary);position:relative;width:100%}.article-card:hover{transform:translateY(-3px);box-shadow:0 8px 25px var(--color-elevated)}.category-badge{background:var(--primary);color:var(--primary-contrast);padding:4px 12px;border-radius:12px;font-size:.8rem;position:absolute;top:-10px;right:15px}.article-card h3{color:var(--color-text);margin-bottom:10px;font-size:1.3rem;margin-right:80px;text-align:left}.article-meta{color:var(--color-muted);font-size:.9rem;margin-bottom:15px;display:flex;gap:8px;text-align:left}.article-preview{color:var(--color-text);line-height:1.5;margin-bottom:15px;text-align:left}.read-more{color:var(--primary);font-weight:600;font-size:.9rem;text-align:left;display:block}.no-articles{text-align:center;padding:60px 20px;color:#666}.no-articles p:first-child{font-size:1.2rem;margin-bottom:10px}@media (max-width: 768px){.article-card{padding:20px;max-width:100%}.article-card h3{margin-right:0;font-size:1.1rem}.category-badge{position:static;display:inline-block;margin-bottom:10px}}.edit-article-form{background:var(--color-surface);padding:30px;border-radius:15px;box-shadow:0 4px 20px var(--color-elevated);margin-top:20px}.edit-article-form div{margin-bottom:25px}.edit-article-form label{display:block;margin-bottom:8px;font-weight:600;color:var(--color-text);font-size:1rem}.edit-article-form input,.edit-article-form textarea{width:100%;padding:12px 15px;border:2px solid var(--color-border);border-radius:8px;font-size:1rem;font-family:inherit;transition:all .3s ease;background:var(--color-background);color:var(--color-text)}.edit-article-form input:focus,.edit-article-form textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #667eea1a}.edit-article-form textarea{resize:vertical;min-height:150px;line-height:1.6}.edit-form-actions{display:flex;gap:15px;justify-content:flex-end;margin-top:30px;padding-top:20px;border-top:1px solid var(--color-border)}.save-btn,.cancel-btn{padding:12px 25px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.save-btn{background:var(--success);color:#fff}.save-btn:hover{background:var(--success-dark);transform:translateY(-2px);box-shadow:0 4px 12px #48bb784d}.cancel-btn{background:var(--color-muted);color:var(--color-text)}.cancel-btn:hover{background:var(--color-border);transform:translateY(-2px)}.char-count{text-align:right;font-size:.8rem;color:var(--color-muted);margin-top:5px}.edit-article-form{animation:slideInUp .3s ease-out}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.article-header.editing{opacity:.6;pointer-events:none}@media (max-width: 768px){.edit-article-form{padding:20px;margin:15px 0}.edit-form-actions{flex-direction:column-reverse;gap:10px}.save-btn,.cancel-btn{width:100%;text-align:center}.edit-article-form input,.edit-article-form textarea{padding:10px 12px}}.edit-article-form input:invalid,.edit-article-form textarea:invalid{border-color:var(--error)}.edit-article-form input:valid,.edit-article-form textarea:valid{border-color:var(--success)}.form-group{position:relative}.edit-article-form select{width:100%;padding:12px 15px;border:2px solid var(--color-border);border-radius:8px;font-size:1rem;background:var(--color-background);color:var(--color-text);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;charset=US-ASCII,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'><path fill='%23666' d='m0 1 2 2 2-2z'/></svg>");background-repeat:no-repeat;background-position:right 15px center;background-size:12px}.edit-article-form select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #667eea1a}.article-detail.editing .article-header,.article-detail.editing .article-content,.article-detail.editing .article-footer{opacity:.3;transition:opacity .3s ease}.create-article-overlay{position:fixed;inset:0;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000;padding:20px}.create-article-modal{background:var(--color-surface);border-radius:15px;width:100%;max-width:700px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px var(--color-elevated)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:25px 30px;border-bottom:1px solid var(--color-border);background:linear-gradient(135deg,var(--primary) 0%,#764ba2 100%);color:var(--primary-contrast);border-radius:15px 15px 0 0}.article-form{padding:30px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--color-text)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 15px;border:2px solid var(--color-border);background:var(--color-surface);color:var(--color-text);border-radius:8px;font-size:1rem;transition:border-color .3s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.btn-primary{background:var(--primary);color:var(--primary-contrast)}.btn-primary:hover{background:var(--primary-strong);transform:translateY(-2px)}.btn-secondary{background:#f0f0f0;color:var(--color-muted)}@media (max-width: 768px){.create-article-modal{margin:10px;max-height:95vh}.modal-header,.article-form{padding:20px}.form-row{grid-template-columns:1fr;gap:15px}.form-actions{flex-direction:column-reverse}}.edit-modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000;padding:20px}.edit-modal{background:#fff;border-radius:15px;width:100%;max-width:700px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:25px 30px;border-bottom:1px solid #eee;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:15px 15px 0 0}.modal-header h2{margin:0;font-size:1.5rem}.close-btn{background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.edit-form{padding:30px}.form-group{margin-bottom:25px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:#333}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 15px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#667eea}.form-group textarea{resize:vertical;min-height:120px;font-family:inherit}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.char-count{text-align:right;font-size:.8rem;color:#666;margin-top:5px}.form-actions{display:flex;gap:15px;justify-content:flex-end;margin-top:30px;padding-top:20px;border-top:1px solid #eee}.btn-primary,.btn-secondary{padding:12px 25px;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .3s;font-weight:600}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover{background:#5a6fd8}.btn-secondary{background:#f0f0f0;color:#666}.btn-secondary:hover{background:#e0e0e0}@media (max-width: 768px){.edit-modal{margin:10px;max-height:95vh}.modal-header,.edit-form{padding:20px}.form-row{grid-template-columns:1fr;gap:15px}.form-actions{flex-direction:column-reverse}}.footer{text-align:center;margin-top:50px;padding:20px;color:var(--color-muted);border-top:1px solid var(--color-border)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);display:flex;justify-content:center;align-items:flex-start;min-height:100vh}.app{max-width:1100px;width:100%;margin:0 auto;padding:20px;min-height:100vh}@media (max-width: 768px){.app{padding:15px}}:root{--color-bg: #ffffff;--color-text: #1f2937;--color-muted: #6b7280;--color-surface: #ffffff;--color-border: #e5e7eb;--color-elevated: rgba(0, 0, 0, .06);--primary: #667eea;--primary-strong: #5a6fd8;--primary-contrast: #ffffff;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.6;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=dark]{--color-bg: #0f172a;--color-text: #e5e7eb;--color-muted: #9ca3af;--color-surface: #111827;--color-border: #1f2937;--color-elevated: rgba(255, 255, 255, .08);--primary: #8b9df5;--primary-strong: #a3b1ff;--primary-contrast: #0b1020}a{font-weight:500;color:var(--primary);text-decoration:inherit}a:hover{color:var(--primary-strong)}body{margin:0;min-width:320px;min-height:100vh;background:var(--color-bg);color:var(--color-text)}button{border-radius:8px;border:1px solid var(--color-border);padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--color-surface);color:var(--color-text);cursor:pointer;transition:border-color .25s,background-color .25s,color .25s,transform .2s}button:hover{border-color:var(--primary)}button:focus,button:focus-visible{outline:3px solid var(--primary);outline-offset:2px}