.layout{flex-direction:column;min-height:100vh;display:flex}.header{height:var(--header-height);border-bottom:1px solid var(--border-color);z-index:100;background-color:#fff;justify-content:space-between;align-items:center;padding:0 1.5rem;display:flex;position:-webkit-sticky;position:sticky;top:0}.header-left{align-items:center;display:flex}.logo{color:var(--primary-color);font-size:1.25rem;font-weight:700;text-decoration:none}.logo:hover{text-decoration:none}.header-nav{gap:1.5rem;display:flex}.nav-link{color:var(--text-secondary);border-bottom:2px solid #0000;padding:.5rem 0;font-weight:500;text-decoration:none;transition:color .2s,border-color .2s}.nav-link:hover{color:var(--text-primary);text-decoration:none}.header-right{align-items:center;gap:1rem;display:flex}.user-info{color:var(--text-secondary);align-items:center;gap:.5rem;display:flex}.tier-badge{background-color:var(--primary-color);color:#fff;text-transform:uppercase;border-radius:1rem;padding:.125rem .5rem;font-size:.75rem;font-weight:600}.logout-btn{border:1px solid var(--border-color);color:var(--text-secondary);background:0 0;border-radius:.375rem;padding:.5rem 1rem;font-size:.875rem;transition:background-color .2s,border-color .2s}.logout-btn:hover{background-color:var(--bg-color);border-color:var(--text-secondary)}.main-content{flex:1;padding:1.5rem}