/* style.css - DrugsNav Purple Theme */
:root{--purple-50:#f5f3ff;--purple-100:#ede9fe;--purple-200:#ddd6fe;--purple-300:#c4b5fd;--purple-400:#a78bfa;--purple-500:#8b5cf6;--purple-600:#7c3aed;--purple-700:#6d28d9;--purple-800:#5b21b6;--purple-900:#4c1d95;--sw:260px;--st:220px;--hh:60px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:linear-gradient(135deg,#f5f3ff 0%,#ede9fe 50%,#faf5ff 100%);color:#1a1a2e;min-height:100vh}

.header{position:fixed;top:0;left:0;right:0;height:var(--hh);background:linear-gradient(135deg,var(--purple-700),var(--purple-800));color:#fff;display:flex;align-items:center;padding:0 24px;z-index:1000;box-shadow:0 2px 12px rgba(109,40,217,0.3)}
.header .logo{font-size:22px;font-weight:700;letter-spacing:0.5px}
.header .logo span{color:var(--purple-300)}

.search-area{display:flex;align-items:center;margin-left:auto;gap:8px}
.search-box{display:flex;align-items:center;background:rgba(255,255,255,0.15);border-radius:8px;padding:6px 12px;gap:6px;border:1px solid rgba(255,255,255,0.2);transition:background 0.2s}
.search-box:focus-within{background:rgba(255,255,255,0.25)}
.search-box input{background:none;border:none;color:#fff;outline:none;font-size:14px;width:220px}
.search-box input::placeholder{color:rgba(255,255,255,0.5)}
.search-box button{background:none;border:none;color:#fff;cursor:pointer;font-size:16px;padding:2px 6px}
.search-mode{background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.2);color:#fff;border-radius:6px;padding:6px 10px;font-size:13px;cursor:pointer;outline:none}
.search-mode option{color:#333}

.sidebar{position:fixed;top:var(--hh);left:0;bottom:0;width:var(--sw);background:#fff;border-right:1px solid var(--purple-100);overflow-y:auto;z-index:900;padding:8px 0;box-shadow:2px 0 12px rgba(0,0,0,0.05);scrollbar-width:thin;scrollbar-color:var(--purple-200) transparent}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-thumb{background:var(--purple-200);border-radius:2px}
.sidebar-section{margin:4px 8px}
.sidebar-parent{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;color:var(--purple-800);transition:background 0.15s;user-select:none}
.sidebar-parent:hover{background:var(--purple-50)}
.sidebar-parent .arrow{font-size:10px;transition:transform 0.2s;color:var(--purple-400)}
.sidebar-parent.open .arrow{transform:rotate(90deg)}
.sidebar-parent .badge{font-size:11px;background:var(--purple-100);color:var(--purple-700);padding:1px 7px;border-radius:10px;font-weight:500;margin-left:6px}
.sidebar-children{display:none;padding-left:8px}
.sidebar-children.open{display:block}
.sidebar-child{display:block;padding:7px 12px 7px 24px;border-radius:6px;font-size:13px;color:#555;cursor:pointer;transition:all 0.15s;text-decoration:none;margin:1px 0}
.sidebar-child:hover{background:var(--purple-50);color:var(--purple-700)}
.sidebar-child.active{background:linear-gradient(135deg,var(--purple-500),var(--purple-600));color:#fff;font-weight:500;box-shadow:0 2px 8px rgba(124,58,237,0.3)}
.sidebar-child-all{display:block;padding:7px 12px 7px 24px;border-radius:6px;font-size:13px;color:var(--purple-600);cursor:pointer;font-weight:600;transition:all 0.15s;margin:2px 0}
.sidebar-child-all:hover{background:var(--purple-50)}

.main{margin-left:var(--sw);padding:24px;padding-top:calc(var(--hh) + 16px);min-height:100vh;padding-bottom:80px}
.section-title{font-size:22px;font-weight:700;color:var(--purple-900);margin-bottom:8px}
.section-subtitle{font-size:13px;color:#888;margin-bottom:20px}

.sub-search-box{margin-bottom:20px;position:relative}
.sub-search-box input{width:100%;padding:10px 16px 10px 38px;border-radius:10px;border:1.5px solid var(--purple-200);font-size:14px;outline:none;background:#fff;transition:border-color 0.2s,box-shadow 0.2s}
.sub-search-box input:focus{border-color:var(--purple-500);box-shadow:0 0 0 3px rgba(139,92,246,0.1)}
.sub-search-box .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--purple-400);font-size:16px}

.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.tool-card{background:#fff;border-radius:12px;padding:18px;box-shadow:0 2px 8px rgba(0,0,0,0.06);transition:transform 0.2s,box-shadow 0.2s;display:flex;gap:14px;cursor:pointer;border:1px solid transparent;text-decoration:none;color:inherit}
.tool-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(109,40,217,0.12);border-color:var(--purple-200)}
.tool-card-logo{width:48px;height:48px;border-radius:10px;flex-shrink:0;object-fit:contain;background:var(--purple-50);padding:4px;border:1px solid var(--purple-100)}
.tool-card-info{flex:1;min-width:0}
.tool-card-name{font-size:15px;font-weight:600;color:var(--purple-900);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tool-card-desc{font-size:12px;color:#777;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tool-card-url{font-size:11px;color:var(--purple-500);margin-top:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.category-overview{display:flex;flex-wrap:wrap;gap:20px}
.cat-card{background:#fff;border-radius:14px;padding:24px;box-shadow:0 2px 12px rgba(0,0,0,0.05);flex:1 1 240px;max-width:320px;cursor:pointer;transition:transform 0.2s,box-shadow 0.2s;border:1px solid transparent;text-decoration:none;color:inherit}
.cat-card:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(109,40,217,0.15);border-color:var(--purple-200)}
.cat-card-icon{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--purple-400),var(--purple-600));display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;margin-bottom:14px}
.cat-card-name{font-size:17px;font-weight:700;color:var(--purple-900);margin-bottom:6px}
.cat-card-meta{font-size:12px;color:#999}

.no-results{text-align:center;padding:60px 20px;color:#999}
.no-results .icon{font-size:48px;margin-bottom:12px}

.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--purple-500),var(--purple-700));color:#fff;border:none;cursor:pointer;font-size:20px;box-shadow:0 4px 16px rgba(109,40,217,0.4);opacity:0;visibility:hidden;transition:all 0.3s;z-index:800;display:flex;align-items:center;justify-content:center}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{transform:scale(1.08);box-shadow:0 6px 20px rgba(109,40,217,0.5)}

.footer{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--purple-100);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#888;z-index:700;height:44px}
.footer a{color:var(--purple-600);text-decoration:none}
.footer a:hover{text-decoration:underline}

.menu-toggle{display:none;position:fixed;top:10px;left:10px;z-index:1100;width:40px;height:40px;border-radius:8px;background:var(--purple-600);color:#fff;border:none;font-size:20px;cursor:pointer;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(109,40,217,0.3)}
.sidebar-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.4);z-index:850;opacity:0;transition:opacity 0.3s}
.sidebar-overlay.show{opacity:1}

@media(max-width:1024px){.sidebar{width:var(--st)}.main{margin-left:var(--st)}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}}
@media(max-width:768px){.menu-toggle{display:flex}.sidebar-overlay{display:block}.sidebar{left:-280px;width:280px;top:0;z-index:1000;transition:left 0.3s ease;box-shadow:4px 0 20px rgba(0,0,0,0.15)}.sidebar.open{left:0}.main{margin-left:0;padding:12px;padding-top:60px;padding-bottom:70px}.tools-grid{grid-template-columns:1fr}.header{padding:0 12px}.header .logo{font-size:18px}.search-box input{width:120px}.search-area{gap:4px}.search-mode{font-size:12px;padding:5px 8px}.back-to-top{bottom:56px;right:16px;width:42px;height:42px;font-size:18px}.footer{padding:10px 12px;height:auto;flex-direction:column;gap:4px;text-align:center}}
@media(max-width:480px){.search-box input{width:100px}.section-title{font-size:18px}}