.header{position:sticky;top:0;left:0;right:0;z-index:50;background:var(--card);border-bottom:2px solid var(--border)}.header-row{justify-content:space-between;height:72px;padding:0 24px;gap:16px}.header-left,.header-logo,.header-row{display:flex;align-items:center}.header-logo{gap:12px;color:var(--foreground);font-weight:800;font-size:20px;text-decoration:none;padding:8px 12px;border:2px solid transparent;transition:all .15s}.header-logo:hover{border-color:var(--primary);background:var(--muted)}.header-logo svg{stroke-width:2.5;color:var(--primary)}.header-logo-text{font-size:20px;font-weight:800;letter-spacing:1px}.header-center{display:flex;align-items:center;flex:1;justify-content:center}.header-page-title{padding:10px 20px;background:var(--background);border:2px solid var(--border);color:var(--foreground);font-size:18px;font-weight:700;letter-spacing:.5px}.header-call-buttons,.header-page-title,.header-right{display:flex;align-items:center;gap:8px}.header-call-buttons{margin-right:8px}.header-call-btn{display:flex;align-items:center;justify-content:center;padding:10px 12px;background:var(--card);border:2px solid var(--border);color:var(--foreground);cursor:pointer;transition:all .15s;border-radius:0}.header-call-btn:hover{background:var(--muted);border-color:var(--primary)}.header-call-btn.audio:hover{background:#22c55e;border-color:#22c55e;color:white}.header-call-btn.video:hover{background:#3b82f6;border-color:#3b82f6;color:white}.header-action{display:flex;align-items:center;gap:8px;padding:10px 16px;background:none;border:2px solid transparent;color:var(--foreground);cursor:pointer;font-size:14px;font-weight:600;transition:all .15s}.header-action:hover{background:var(--muted);border-color:var(--border)}.header-menu-btn{font-size:18px;padding:8px 12px}.header-menu-btn.active{background:var(--muted);border-color:var(--border)}.header-theme-select-btn{padding:8px 12px;font-size:16px}.header-theme-select-btn.active{background:var(--muted);border-color:var(--border)}.header-dropdown{position:relative}.header-full-menu{position:absolute;top:100%;right:0;margin-top:8px;min-width:320px;max-width:360px;background:var(--card);border:2px solid var(--border);z-index:200;max-height:80vh;overflow-y:auto}.header-menu-section{padding:12px 0}.header-menu-section-title{padding:8px 16px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--muted-foreground)}.header-full-menu-item{display:flex;align-items:center;gap:12px;width:100%;padding:12px 16px;background:none;color:var(--foreground);cursor:pointer;font-size:14px;font-weight:600;text-align:left;text-decoration:none;transition:all .15s;border:2px solid transparent}.header-full-menu-item:hover{background:var(--muted);border-color:var(--border)}.header-full-menu-item.active{background:var(--primary);color:var(--primary-foreground);border-color:var(--primary)}.header-full-menu-item.danger{color:var(--destructive)}.header-full-menu-item.danger:hover{background:var(--destructive);color:white;border-color:var(--destructive)}.header-theme-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:8px 16px}.header-theme-option{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 6px;background:var(--background);border:2px solid var(--border);color:var(--foreground);font-size:11px;font-weight:600;cursor:pointer;transition:all .15s;text-align:center}.header-theme-option:hover{border-color:var(--primary);background:var(--muted)}.header-theme-option.active{border-color:var(--primary);background:var(--primary);color:var(--primary-foreground)}.header-theme-color{width:32px;height:32px;border:2px solid var(--border)}.header-menu-language{display:flex;align-items:center;gap:12px;padding:12px 16px;width:100%}.header-language-select{flex:1;background:var(--background);border:2px solid var(--border);color:var(--foreground);padding:8px 12px;font-size:14px;font-weight:600;cursor:pointer}.header-menu-divider{height:2px;background:var(--border);margin:8px 16px}.header-dropdown-menu{position:absolute;top:100%;right:0;margin-top:8px;min-width:200px;background:var(--card);border:2px solid var(--border);z-index:200}.header-dropdown-item{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;background:none;color:var(--foreground);cursor:pointer;font-size:14px;font-weight:600;text-align:left;text-decoration:none;transition:all .15s;border:2px solid transparent}.header-dropdown-item:hover{background:var(--muted);border-color:var(--border)}.header-dropdown-item.active{background:var(--primary);color:var(--primary-foreground);border-color:var(--primary)}.header-dropdown-item.danger{color:var(--destructive)}.header-dropdown-item.danger:hover{background:var(--destructive);color:white;border-color:var(--destructive)}.header-dropdown-divider{height:2px;background:var(--border);margin:4px 0}.header-user{padding:6px 12px 6px 8px}.header-avatar{background:var(--primary);color:var(--primary-foreground);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}.header-avatar,.header-avatar-img{width:36px;height:36px;border:2px solid var(--primary-foreground)}.header-avatar-img{object-fit:cover}.header-login-btn,.header-register-btn{padding:10px 16px;border:2px solid var(--border)}.header-login-btn:hover,.header-register-btn:hover{border-color:var(--primary);background:var(--muted)}.header-register-btn{background:var(--primary);border-color:var(--primary);color:var(--primary-foreground)}.header-register-btn:hover{background:var(--primary-foreground);color:var(--primary);border-color:var(--primary-foreground)}.rotate{transform:rotate(180deg)}@media (max-width:768px){.header-row{padding:0 16px;height:64px}.header-logo-text{display:none}.header-page-title{font-size:16px;padding:8px 12px}.header-action{padding:8px}.header-full-menu{min-width:280px;right:-40px}.header-avatar{width:32px;height:32px;font-size:14px}}.footer{margin-top:auto;padding:32px 24px;border-top:2px solid var(--border);background:var(--card)}.footer-content{flex-direction:column;justify-content:center;gap:24px}.footer-brand,.footer-content{display:flex;align-items:center}.footer-brand{gap:16px;text-align:center}.footer-logo-link{display:flex;align-items:center;transition:all .15s}.footer-logo-link:hover{opacity:.8;transform:scale(1.05)}.footer-company{display:flex;flex-direction:column;align-items:center;gap:4px}.footer-company-name{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:1px}.footer-company-slogan{font-size:14px;font-weight:600;color:var(--muted-foreground);letter-spacing:.5px}.footer-links{display:flex;align-items:center;gap:12px;font-size:13px;flex-wrap:wrap;justify-content:center}.footer-link{color:var(--muted-foreground);text-decoration:none;font-weight:600;padding:6px 10px;border:2px solid transparent;transition:all .15s}.footer-link:hover{color:var(--foreground);border-color:var(--border);background:var(--muted)}.footer-divider{color:var(--border);font-weight:400}.footer-version{font-size:12px;color:var(--muted-foreground);font-weight:600}@media (max-width:768px){.footer{padding:24px 16px}.footer-content{gap:20px}.footer-company-name{font-size:18px}.footer-company-slogan{font-size:13px}.footer-links{flex-wrap:wrap;justify-content:center;font-size:12px;gap:8px}.footer-link{padding:6px 8px}}