nav { display: flex; align-items: center; justify-content: space-between; padding: 1.2rem 2.5rem; border-bottom: 1px solid var(--aged); position: sticky; top: 0; background: rgba(245,240,232,0.95); backdrop-filter: blur(8px); z-index: 100; }
.logo { font-family: var(--font-serif); font-size: 1.3rem; }
.logo span { color: var(--rust); font-style: italic; }
.nav-tabs { display: flex; background: var(--aged); border-radius: var(--radius-sm); padding: 3px; gap: 0; }
.nav-tab { padding: 0.45rem 1rem; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; border-radius: var(--radius-sm); border: none; background: transparent; color: var(--warm-gray); transition: all var(--transition); }
.nav-tab.active { background: var(--paper); color: var(--ink); box-shadow: 0 1px 3px var(--shadow); }
.nav-right { display: flex; align-items: center; gap: 1rem; }
.user-badge { display: flex; align-items: center; gap: 0.5rem; font-size: 0.72rem; color: var(--warm-gray); cursor: pointer; padding: 0.3rem 0.7rem; border: 1px solid var(--aged); border-radius: var(--radius-full); transition: all var(--transition); }
.user-badge:hover { border-color: var(--warm-gray); }
.user-avatar { width: 24px; height: 24px; border-radius: 50%; background: var(--rust); color: white; display: flex; align-items: center; justify-content: center; font-size: 0.65rem; font-weight: 600; }
.logout-hint { font-size: 0.6rem; color: var(--mist); }
@media (max-width: 700px) { nav { padding: 1rem 1.2rem; } .nav-tab { padding: 0.4rem 0.7rem; font-size: 0.65rem; } }