/* ==========================================================================
   AI Conversation Analyzer — Navigation
   ========================================================================== */

/* ===========================
   Navigation
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10, 14, 20, 0.6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background var(--transition), border-color var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 20, 0.88);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.nav-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 17px;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-brand-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 12px var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-links a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.btn-github {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-github:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-github i { font-size: 15px; }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   Nav Active State
   =========================== */

.nav-links a.active {
    color: var(--primary);
}