@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-color:#f7f7f8;--surface-color:#fff;--text-primary:#1e1e1e;--text-secondary:#6e6e73;--border-color:#e5e5e5;--primary-accent:#2563eb;--primary-accent-hover:#1d4ed8;--danger:#dc2626;--sidebar-width:260px;--card-shadow:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008}[data-theme=dark]{--bg-color:#121212;--surface-color:#1e1e1e;--text-primary:#e5e5e5;--text-secondary:#a3a3a3;--border-color:#2d2d2d;--primary-accent:#3b82f6;--primary-accent-hover:#2563eb;--card-shadow:0 4px 6px -1px #0003}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}body{background-color:var(--bg-color);color:var(--text-primary);line-height:1.5;transition:background-color .3s,color .3s}.login-container{background-color:var(--bg-color);justify-content:center;align-items:center;height:100vh;display:flex}.login-form{background:var(--surface-color);box-shadow:var(--card-shadow);text-align:center;border-radius:16px;width:100%;max-width:360px;padding:40px}.login-form h2{color:var(--text-primary);margin-bottom:24px;font-weight:600}.login-form input{border:1px solid var(--border-color);background:var(--bg-color);width:100%;color:var(--text-primary);border-radius:8px;outline:none;margin-bottom:16px;padding:12px 16px;font-size:15px;transition:border-color .2s}.login-form input:focus{border-color:var(--primary-accent)}.login-form button{background:var(--primary-accent);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:12px;font-size:15px;font-weight:500;transition:background-color .2s}.login-form button:hover{background:var(--primary-accent-hover)}.app-container{height:100vh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-width);background-color:var(--surface-color);border-right:1px solid var(--border-color);flex-direction:column;flex-shrink:0;padding:32px 24px;display:flex}.sidebar h1{color:var(--text-primary);letter-spacing:-.01em;margin-bottom:24px;font-size:18px;font-weight:600}.nav-item{cursor:pointer;color:var(--text-secondary);border-radius:8px;margin-bottom:8px;padding:10px 16px;font-size:15px;font-weight:500;transition:all .2s}.nav-item:hover{background-color:var(--bg-color);color:var(--text-primary)}.nav-item.active{background-color:var(--bg-color);color:var(--text-primary);font-weight:600}.main-content{background-color:var(--bg-color);flex-direction:column;flex:1;display:flex;overflow-y:auto}.topbar{background:rgba(var(--bg-color), .8);-webkit-backdrop-filter:blur(12px);z-index:10;justify-content:space-between;align-items:center;padding:24px 48px;display:flex;position:sticky;top:0}.topbar select{appearance:none;border:1px solid var(--border-color);background:var(--surface-color) url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%236e6e73%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E) no-repeat right 12px center;color:var(--text-primary);cursor:pointer;background-size:16px;border-radius:20px;outline:none;padding:8px 32px 8px 16px;font-size:14px;font-weight:500;line-height:1.5}.theme-toggle{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;background:0 0;border-radius:20px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .2s}.theme-toggle:hover{background:var(--surface-color)}.feed{column-count:4;column-gap:24px;width:100%;padding:0 48px 48px}@media (width<=1600px){.feed{column-count:3}}@media (width<=1200px){.feed{column-count:2}}@media (width<=800px){.feed{column-count:1}}.bookmark-card{background:var(--surface-color);border:1px solid var(--border-color);box-shadow:var(--card-shadow);break-inside:avoid;page-break-inside:avoid;border-radius:16px;flex-direction:column;margin-bottom:24px;transition:transform .2s,box-shadow .2s;display:flex;overflow:hidden}.bookmark-card:hover{transform:translateY(-2px);box-shadow:0 8px 16px -4px #0000001a}.bookmark-image{object-fit:cover;border-bottom:1px solid var(--border-color);width:100%;max-height:400px}.bookmark-body{flex-direction:column;flex:1;padding:20px;display:flex}.bookmark-header{color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;display:flex}.bookmark-author{color:var(--text-primary);font-weight:600}.bookmark-content{color:var(--text-primary);white-space:pre-wrap;word-wrap:break-word;margin-bottom:20px;font-size:15px;line-height:1.6}.bookmark-footer{border-top:1px solid var(--border-color);justify-content:space-between;align-items:center;margin-top:auto;padding-top:16px;display:flex}.bookmark-link{color:var(--primary-accent);font-size:14px;font-weight:500;text-decoration:none}.bookmark-link:hover{text-decoration:underline}.read-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:16px;padding:6px 12px;font-size:13px;transition:all .2s}.read-btn:hover{background:var(--bg-color);color:var(--text-primary)}@media (width<=800px){.app-container{flex-direction:column}.sidebar{border-right:none;border-bottom:1px solid var(--border-color);white-space:nowrap;flex-direction:row;align-items:center;width:100%;height:auto;padding:16px;overflow-x:auto}.sidebar h1{display:none}.nav-item{margin-bottom:0;margin-right:8px;padding:8px 12px;display:inline-block}.topbar{padding:16px}.feed{column-gap:16px;padding:16px}}