.app-header{z-index:50;background:var(--color-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0}.app-header-inner{justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto;padding:18px 24px;display:flex}.app-header-brand{color:var(--color-text);flex-shrink:0;align-items:center;gap:10px;text-decoration:none;display:flex}.app-header-brand.has-back{gap:8px}.app-header-brand-back-icon{color:var(--color-text-secondary);font-size:20px}.app-header-brand-custom-icon{color:var(--color-text-secondary);font-size:18px}.app-header-brand-text{white-space:nowrap;text-overflow:ellipsis;font-size:1.25em;font-weight:800;overflow:hidden}.app-header-controls,.desktop-nav{align-items:center;gap:16px;display:flex}.desktop-nav-link{color:var(--color-text-secondary);white-space:nowrap;align-items:center;gap:6px;font-size:.875em;text-decoration:none;transition:color .15s,border-color .15s;display:flex}.desktop-nav-link-icon{font-size:16px}.desktop-nav-link.active{color:var(--color-primary);font-weight:700}.desktop-controls{align-items:center;gap:16px;display:flex}.home-link{color:var(--color-text-secondary);align-items:center;gap:6px;font-size:.9375em;font-weight:500;text-decoration:none;display:flex}.home-link i{font-size:16px}.mobile-hamburger{cursor:pointer;color:var(--color-text-secondary);background:0 0;border:none;align-items:center;padding:8px;display:none}.mobile-hamburger i{font-size:22px}.header-mobile-menu{border-bottom:1px solid var(--color-border);z-index:100;box-shadow:0 10px 25px var(--color-shadow-md,#0000001a);background:var(--color-bg);padding:12px 16px 16px;animation:.2s ease-out slideDown;position:absolute;top:100%;left:0;right:0}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.mobile-nav-link{color:var(--color-text);background:0 0;border-radius:8px;align-items:center;gap:10px;padding:12px 8px;font-size:15px;font-weight:400;text-decoration:none;display:flex}.mobile-nav-link-icon{color:var(--color-text-secondary);font-size:18px}.mobile-nav-link.active{color:var(--color-primary);background:var(--color-primary-light,#7c3aed14);font-weight:700}.mobile-nav-link.active .mobile-nav-link-icon{color:var(--color-primary)}.mobile-menu-divider{background:var(--color-border);height:1px;margin:8px 0}.mobile-theme-lang-controls{align-items:center;gap:8px;padding:8px 8px 4px;display:flex}.mobile-home-link{color:var(--color-primary);align-items:center;gap:10px;padding:12px 8px;font-size:15px;font-weight:600;text-decoration:none;display:flex}.mobile-home-link i{font-size:18px}.back-link{color:var(--color-text-secondary);align-items:center;gap:6px;font-size:.8125em;text-decoration:none;display:inline-flex}.back-link i{font-size:16px}.back-text{display:inline}.lang-toggle-overlay{position:relative}.lang-toggle-btn{cursor:pointer;border:2px solid var(--color-border);background:var(--color-bg);color:var(--color-text-secondary);border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:.875em;font-weight:500;transition:background .15s;display:flex}.lang-toggle-icon{font-size:16px}.lang-short{display:none}.lang-full{display:inline}.lang-toggle-caret{opacity:.6;font-size:14px}.lang-dropdown{background:var(--color-bg);border:1px solid var(--color-border);box-shadow:0 8px 24px var(--color-shadow-hover);z-index:100;border-radius:10px;min-width:180px;padding:6px;position:absolute;top:calc(100% + 6px);right:0}.lang-option{color:var(--color-text);background:0 0;border-radius:7px;justify-content:space-between;align-items:center;padding:10px 14px;font-size:.875em;font-weight:400;text-decoration:none;transition:background .1s;display:flex}.lang-option:hover{background:var(--color-surface)}.lang-option.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:600}.lang-option.active:hover{background:var(--color-primary-light)}.lang-option-check{font-size:16px}.theme-toggle-btn{cursor:pointer;border:2px solid var(--color-border);background:var(--color-bg);color:var(--color-text-secondary);border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:.875em;font-weight:500;transition:background .15s,border-color .15s;display:flex}.theme-toggle-icon{font-size:16px}.theme-toggle-btn.compact{gap:5px;min-width:auto;min-height:34px;padding:4px 10px;font-size:12px}.theme-toggle-btn.compact .theme-toggle-icon{font-size:15px}@media (max-width:768px){.desktop-nav{display:none!important}.mobile-hamburger{display:flex!important}.app-header-inner{padding:12px 16px!important}.hide-on-mobile,.back-text{display:none!important}.header-mobile-menu{padding:8px 16px 16px!important}.header-mobile-menu .lang-dropdown{left:0!important;right:auto!important}.lang-short{display:inline!important}.lang-full{display:none!important}}@media (max-width:480px){.app-header-inner{padding:12px 16px!important}.header-logo-icon{width:32px!important;height:32px!important}.app-header-brand-text{font-size:1.2em!important}}@media (min-width:769px){.mobile-hamburger{display:none!important}}