.theme-toggle{border:1.5px solid var(--border-medium);width:34px;height:34px;color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:color .2s,border-color .2s,background .2s,transform .15s;display:flex}.theme-toggle svg{width:16px;height:16px;display:block}.theme-toggle:hover{color:var(--text-primary);border-color:var(--color-primary);background:var(--bg-secondary)}.theme-toggle:active{transform:scale(.88)}.theme-toggle:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}
.app-header{background-color:var(--bg-primary);border-bottom:1px solid var(--border-light);height:60px;box-shadow:var(--shadow-box);z-index:100;justify-content:space-between;align-items:center;padding:0 2rem;display:flex;position:-webkit-sticky;position:sticky;top:0}.app-header-left{align-items:center;gap:.875rem;min-width:0;display:flex}.app-header-logo-link{flex-shrink:0;align-items:center;display:flex}.app-header-logo{width:auto;height:28px;display:block}.app-header-divider{background-color:var(--border-medium);flex-shrink:0;width:1px;height:20px}.app-header-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:.9375rem;font-weight:600;overflow:hidden}.app-header-right{flex-shrink:0;align-items:center;gap:.75rem;display:flex}.app-header-back{color:var(--text-secondary);border-radius:6px;align-items:center;gap:.25rem;padding:.25rem .5rem;font-size:.875rem;text-decoration:none;transition:color .15s,background-color .15s;display:flex}.app-header-back svg{flex-shrink:0;width:16px;height:16px}.app-header-back:hover{color:var(--text-primary);background-color:var(--bg-secondary)}@media (max-width:600px){.app-header{padding:0 1rem}.app-header-back span{display:none}.app-header-title{font-size:.875rem}}