:root{--bg-color:#f5f5f7;--card-bg:#fff;--text-primary:#1d1d1f;--text-secondary:#86868b;--accent-color:#0071e3;--border-radius:18px;--shadow:0 4px 14px #0000000d;--transition:all .3s ease}body.dark-mode{--bg-color:#121212;--card-bg:#1e1e1e;--text-primary:#f5f5f7;--text-secondary:#86868b;--shadow:0 4px 14px #0006}*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg-color);color:var(--text-primary);transition:var(--transition);-webkit-font-smoothing:antialiased}.app-container{max-width:800px;min-height:100vh;margin:0 auto;padding:2rem}.news-card{background-color:var(--card-bg);border-radius:var(--border-radius);transition:var(--transition);border:1px solid #86868b;margin-bottom:1rem;padding:1.5rem}.news-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00000014}button{background-color:var(--card-bg);color:var(--text-primary);border:1px solid var(--text-secondary);cursor:pointer;transition:var(--transition);border-radius:20px;padding:8px 16px;font-weight:500}button:hover{border-color:var(--text-primary)}.app-header{border-bottom:1px solid #86868b33;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;display:flex}.header-title-group{align-items:center;gap:1rem;display:flex}h1{letter-spacing:-.02em;color:var(--text-primary);font-size:2.5rem;font-weight:700}.stats-pill{background-color:var(--text-primary);color:var(--bg-color);transition:var(--transition);border-radius:20px;align-items:center;gap:12px;padding:6px 14px;font-size:.85rem;font-weight:600;display:flex}.category-filter{-ms-overflow-style:none;scrollbar-width:none;gap:.75rem;margin-bottom:1.5rem;padding-bottom:1rem;display:flex;overflow-x:auto}.category-filter::-webkit-scrollbar{display:none}.category-pill{color:var(--text-secondary);transition:var(--transition);background-color:#86868b1a;border:none;border-radius:20px}.category-pill:hover{background-color:#86868b33;border-color:#0000}.category-pill.active{background-color:var(--text-primary);color:var(--bg-color)}.news-list{flex-direction:column;gap:1.25rem;display:flex}.empty-state{text-align:center;color:var(--text-secondary);background-color:var(--card-bg);border-radius:var(--border-radius);padding:3rem}.news-card-content h3{color:var(--text-primary);transition:var(--transition);margin-bottom:.5rem;font-size:1.25rem;line-height:1.4}.news-description{color:var(--text-secondary);border-top:1px solid #86868b33;margin-top:1rem;padding-top:1rem;font-size:1rem;line-height:1.5}.news-actions{gap:.75rem;margin-top:1.25rem;display:flex}.read-btn{background-color:var(--text-primary);color:var(--bg-color);border-color:#0000}.read-btn:hover{opacity:.9}.unread-btn{color:var(--text-secondary);border:1px solid var(--text-secondary);background-color:#0000}.unread-btn:hover{color:var(--text-primary);border-color:var(--text-primary)}